./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi008.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/rfi008.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/rfi008.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/rfi008.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 15:27:51,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:27:51,054 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:27:51,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:27:51,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:27:51,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:27:51,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:27:51,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:27:51,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:27:51,081 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:27:51,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:27:51,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:27:51,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:27:51,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:27:51,083 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:27:51,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:27:51,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:27:51,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:27:51,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:27:51,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:27:51,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:27:51,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:27:51,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:27:51,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:27:51,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:27:51,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:27:51,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:27:51,093 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:27:51,093 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:27:51,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:27:51,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:27:51,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:27:51,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:27:51,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:27:51,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:27:51,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:27:51,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:27:51,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:27:51,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:27:51,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:27:51,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:27:51,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:27:51,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:27:51,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 15:27:51,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 15:27:51,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 15:27:51,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 15:27:51,372 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 15:27:51,372 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 15:27:51,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi008.oepc.yml/witness.yml [2024-06-04 15:27:51,485 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 15:27:51,485 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 15:27:51,486 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-04 15:27:52,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 15:27:52,725 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 15:27:52,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-04 15:27:52,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0220326f0/8b0c083989194d1dbe028c441ee718bd/FLAG2f4835d1b [2024-06-04 15:27:52,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0220326f0/8b0c083989194d1dbe028c441ee718bd [2024-06-04 15:27:52,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 15:27:52,756 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 15:27:52,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 15:27:52,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 15:27:52,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 15:27:52,763 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:27:51" (1/2) ... [2024-06-04 15:27:52,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e73162 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:27:52, skipping insertion in model container [2024-06-04 15:27:52,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:27:51" (1/2) ... [2024-06-04 15:27:52,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c3e9338 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 03:27:52, skipping insertion in model container [2024-06-04 15:27:52,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:27:52" (2/2) ... [2024-06-04 15:27:52,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e73162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:52, skipping insertion in model container [2024-06-04 15:27:52,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 03:27:52" (2/2) ... [2024-06-04 15:27:52,767 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 15:27:52,822 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 15:27:52,823 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 15:27:52,823 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-04 15:27:52,823 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 15:27:52,824 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-04 15:27:52,861 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 15:27:53,165 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:27:53,176 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 15:27:53,280 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 15:27:53,309 INFO L206 MainTranslator]: Completed translation [2024-06-04 15:27:53,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53 WrapperNode [2024-06-04 15:27:53,309 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 15:27:53,310 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 15:27:53,310 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 15:27:53,310 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 15:27:53,315 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,357 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-04 15:27:53,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 15:27:53,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 15:27:53,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 15:27:53,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 15:27:53,423 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,445 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 15:27:53,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 15:27:53,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 15:27:53,462 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 15:27:53,462 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 15:27:53,463 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (1/1) ... [2024-06-04 15:27:53,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:27:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 15:27:53,493 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 15:27:53,511 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 15:27:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 15:27:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 15:27:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 15:27:53,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 15:27:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 15:27:53,521 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 15:27:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 15:27:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 15:27:53,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 15:27:53,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 15:27:53,523 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 15:27:53,654 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 15:27:53,657 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 15:27:53,926 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 15:27:53,926 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 15:27:54,059 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 15:27:54,059 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 15:27:54,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:27:54 BoogieIcfgContainer [2024-06-04 15:27:54,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 15:27:54,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 15:27:54,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 15:27:54,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 15:27:54,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 03:27:51" (1/4) ... [2024-06-04 15:27:54,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7298e119 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 03:27:54, skipping insertion in model container [2024-06-04 15:27:54,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 03:27:52" (2/4) ... [2024-06-04 15:27:54,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7298e119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:27:54, skipping insertion in model container [2024-06-04 15:27:54,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 03:27:53" (3/4) ... [2024-06-04 15:27:54,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7298e119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 03:27:54, skipping insertion in model container [2024-06-04 15:27:54,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 03:27:54" (4/4) ... [2024-06-04 15:27:54,070 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.oepc.i [2024-06-04 15:27:54,082 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 15:27:54,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 15:27:54,082 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 15:27:54,115 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 15:27:54,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:27:54,166 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-04 15:27:54,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:27:54,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 15:27:54,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-04 15:27:54,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-04 15:27:54,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 15:27:54,191 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;@22f5bf60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 15:27:54,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 15:27:54,196 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 15:27:54,196 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 15:27:54,196 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 15:27:54,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:54,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 15:27:54,198 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 15:27:54,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:54,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1460724257, now seen corresponding path program 1 times [2024-06-04 15:27:54,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:54,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775920345] [2024-06-04 15:27:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:54,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:55,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:55,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775920345] [2024-06-04 15:27:55,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775920345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:55,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:55,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 15:27:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795629439] [2024-06-04 15:27:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:55,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 15:27:55,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:55,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 15:27:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 15:27:55,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:27:55,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:55,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:55,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:27:55,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:55,242 INFO L124 PetriNetUnfolderBase]: 162/310 cut-off events. [2024-06-04 15:27:55,242 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-04 15:27:55,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 310 events. 162/310 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1182 event pairs, 97 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 609. Up to 288 conditions per place. [2024-06-04 15:27:55,248 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-04 15:27:55,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-04 15:27:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 15:27:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 15:27:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-04 15:27:55,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-04 15:27:55,257 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 55 transitions. [2024-06-04 15:27:55,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-04 15:27:55,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 15:27:55,261 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-04 15:27:55,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-04 15:27:55,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-04 15:27:55,266 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-04 15:27:55,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:55,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:55,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:55,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 15:27:55,267 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 15:27:55,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:55,267 INFO L85 PathProgramCache]: Analyzing trace with hash 698380346, now seen corresponding path program 1 times [2024-06-04 15:27:55,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:55,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291521816] [2024-06-04 15:27:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:55,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:55,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291521816] [2024-06-04 15:27:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291521816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:55,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:55,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 15:27:55,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564481841] [2024-06-04 15:27:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:55,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 15:27:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 15:27:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 15:27:55,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:27:55,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:55,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:55,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:27:55,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:55,940 INFO L124 PetriNetUnfolderBase]: 159/307 cut-off events. [2024-06-04 15:27:55,940 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-04 15:27:55,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 307 events. 159/307 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1169 event pairs, 79 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 682. Up to 274 conditions per place. [2024-06-04 15:27:55,945 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-04 15:27:55,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 163 flow [2024-06-04 15:27:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 15:27:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 15:27:55,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-04 15:27:55,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-04 15:27:55,948 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 70 transitions. [2024-06-04 15:27:55,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 163 flow [2024-06-04 15:27:55,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 15:27:55,952 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-04 15:27:55,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-04 15:27:55,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-04 15:27:55,954 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-04 15:27:55,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:55,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:55,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:55,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 15:27:55,955 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 15:27:55,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:55,957 INFO L85 PathProgramCache]: Analyzing trace with hash 173167718, now seen corresponding path program 1 times [2024-06-04 15:27:55,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:55,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339287893] [2024-06-04 15:27:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:55,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:56,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:56,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339287893] [2024-06-04 15:27:56,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339287893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:56,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:56,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 15:27:56,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463386162] [2024-06-04 15:27:56,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:56,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 15:27:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 15:27:56,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-04 15:27:56,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-04 15:27:56,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 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 15:27:56,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:56,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-04 15:27:56,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:57,079 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2024-06-04 15:27:57,079 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-04 15:27:57,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 301 events. 153/301 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1116 event pairs, 43 based on Foata normal form. 4/304 useless extension candidates. Maximal degree in co-relation 733. Up to 246 conditions per place. [2024-06-04 15:27:57,081 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 32 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-04 15:27:57,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 215 flow [2024-06-04 15:27:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:27:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:27:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-04 15:27:57,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-04 15:27:57,082 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 86 transitions. [2024-06-04 15:27:57,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 215 flow [2024-06-04 15:27:57,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 15:27:57,084 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-04 15:27:57,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-04 15:27:57,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-04 15:27:57,085 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-04 15:27:57,085 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 15:27:57,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:57,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:57,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 15:27:57,086 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:27:57,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:57,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1532684601, now seen corresponding path program 1 times [2024-06-04 15:27:57,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:57,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438215609] [2024-06-04 15:27:57,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:57,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:57,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:57,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438215609] [2024-06-04 15:27:57,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438215609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:57,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:57,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 15:27:57,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545400462] [2024-06-04 15:27:57,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:57,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 15:27:57,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:57,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 15:27:57,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-04 15:27:57,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:57,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:57,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:57,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:57,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:57,764 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-04 15:27:57,764 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-06-04 15:27:57,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 380 events. 211/380 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1339 event pairs, 92 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1037. Up to 368 conditions per place. [2024-06-04 15:27:57,766 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-04 15:27:57,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 209 flow [2024-06-04 15:27:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 15:27:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 15:27:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-06-04 15:27:57,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:27:57,767 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 62 transitions. [2024-06-04 15:27:57,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 209 flow [2024-06-04 15:27:57,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 15:27:57,769 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-04 15:27:57,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-04 15:27:57,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-04 15:27:57,770 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-04 15:27:57,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:27:57,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:57,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:57,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 15:27:57,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:27:57,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:57,771 INFO L85 PathProgramCache]: Analyzing trace with hash 584721724, now seen corresponding path program 1 times [2024-06-04 15:27:57,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:57,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367249947] [2024-06-04 15:27:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:57,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367249947] [2024-06-04 15:27:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367249947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:59,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:27:59,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408530380] [2024-06-04 15:27:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:27:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:59,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:27:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:27:59,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-04 15:27:59,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 133 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 15:27:59,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:59,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-04 15:27:59,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:27:59,369 INFO L124 PetriNetUnfolderBase]: 190/355 cut-off events. [2024-06-04 15:27:59,370 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-06-04 15:27:59,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 355 events. 190/355 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1259 event pairs, 34 based on Foata normal form. 4/358 useless extension candidates. Maximal degree in co-relation 1002. Up to 272 conditions per place. [2024-06-04 15:27:59,372 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-04 15:27:59,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 297 flow [2024-06-04 15:27:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:27:59,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:27:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-04 15:27:59,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-04 15:27:59,373 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 8 states and 118 transitions. [2024-06-04 15:27:59,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 297 flow [2024-06-04 15:27:59,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 286 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-04 15:27:59,375 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 164 flow [2024-06-04 15:27:59,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=164, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-04 15:27:59,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-04 15:27:59,376 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 164 flow [2024-06-04 15:27:59,376 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 15:27:59,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:27:59,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:27:59,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 15:27:59,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:27:59,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:27:59,377 INFO L85 PathProgramCache]: Analyzing trace with hash -268581436, now seen corresponding path program 1 times [2024-06-04 15:27:59,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:27:59,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70931127] [2024-06-04 15:27:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:27:59,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:27:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:27:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:27:59,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:27:59,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70931127] [2024-06-04 15:27:59,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70931127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:27:59,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:27:59,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:27:59,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574178272] [2024-06-04 15:27:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:27:59,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:27:59,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:27:59,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:27:59,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:27:59,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:27:59,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 15:27:59,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:27:59,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:27:59,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:00,103 INFO L124 PetriNetUnfolderBase]: 201/363 cut-off events. [2024-06-04 15:28:00,104 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2024-06-04 15:28:00,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 363 events. 201/363 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1227 event pairs, 49 based on Foata normal form. 3/365 useless extension candidates. Maximal degree in co-relation 1144. Up to 342 conditions per place. [2024-06-04 15:28:00,106 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-04 15:28:00,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 276 flow [2024-06-04 15:28:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:28:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:28:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-04 15:28:00,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:28:00,107 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 164 flow. Second operand 6 states and 72 transitions. [2024-06-04 15:28:00,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 276 flow [2024-06-04 15:28:00,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 252 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:00,109 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 173 flow [2024-06-04 15:28:00,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=173, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-04 15:28:00,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-04 15:28:00,110 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 173 flow [2024-06-04 15:28:00,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 15:28:00,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:00,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:00,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 15:28:00,111 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 15:28:00,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:00,111 INFO L85 PathProgramCache]: Analyzing trace with hash 636740918, now seen corresponding path program 1 times [2024-06-04 15:28:00,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:00,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369734298] [2024-06-04 15:28:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:00,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:00,694 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 15:28:00,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:00,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369734298] [2024-06-04 15:28:00,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369734298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:00,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:00,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:28:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104388460] [2024-06-04 15:28:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:00,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:28:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:28:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:28:00,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:00,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 15:28:00,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:00,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:00,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:00,907 INFO L124 PetriNetUnfolderBase]: 204/368 cut-off events. [2024-06-04 15:28:00,907 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-06-04 15:28:00,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 368 events. 204/368 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1259 event pairs, 49 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1211. Up to 340 conditions per place. [2024-06-04 15:28:00,909 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 38 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-04 15:28:00,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 323 flow [2024-06-04 15:28:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:28:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:28:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-04 15:28:00,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:28:00,911 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 173 flow. Second operand 6 states and 76 transitions. [2024-06-04 15:28:00,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 323 flow [2024-06-04 15:28:00,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 306 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:00,913 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 203 flow [2024-06-04 15:28:00,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-04 15:28:00,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-04 15:28:00,914 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 203 flow [2024-06-04 15:28:00,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 15:28:00,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:00,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:00,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 15:28:00,914 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 15:28:00,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:00,915 INFO L85 PathProgramCache]: Analyzing trace with hash 293395208, now seen corresponding path program 2 times [2024-06-04 15:28:00,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:00,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314418629] [2024-06-04 15:28:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:00,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:01,425 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 15:28:01,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:01,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314418629] [2024-06-04 15:28:01,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314418629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:01,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:01,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 15:28:01,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751186298] [2024-06-04 15:28:01,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:01,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 15:28:01,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 15:28:01,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 15:28:01,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:01,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 15:28:01,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:01,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:01,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:01,661 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-04 15:28:01,662 INFO L125 PetriNetUnfolderBase]: For 1096/1096 co-relation queries the response was YES. [2024-06-04 15:28:01,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 365 events. 202/365 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1243 event pairs, 48 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1263. Up to 350 conditions per place. [2024-06-04 15:28:01,664 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-04 15:28:01,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 307 flow [2024-06-04 15:28:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 15:28:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 15:28:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-04 15:28:01,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:28:01,665 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 203 flow. Second operand 6 states and 70 transitions. [2024-06-04 15:28:01,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 307 flow [2024-06-04 15:28:01,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 295 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 15:28:01,667 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 212 flow [2024-06-04 15:28:01,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-06-04 15:28:01,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-04 15:28:01,668 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 212 flow [2024-06-04 15:28:01,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 15:28:01,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:01,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:01,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 15:28:01,669 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 15:28:01,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:01,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1965014730, now seen corresponding path program 1 times [2024-06-04 15:28:01,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:01,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593672376] [2024-06-04 15:28:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:01,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:02,579 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 15:28:02,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:02,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593672376] [2024-06-04 15:28:02,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593672376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:02,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:02,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:02,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304671504] [2024-06-04 15:28:02,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:02,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:02,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:02,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:02,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:02,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 212 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 15:28:02,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:02,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:02,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:02,800 INFO L124 PetriNetUnfolderBase]: 205/370 cut-off events. [2024-06-04 15:28:02,800 INFO L125 PetriNetUnfolderBase]: For 1404/1404 co-relation queries the response was YES. [2024-06-04 15:28:02,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 370 events. 205/370 cut-off events. For 1404/1404 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1276 event pairs, 48 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1329. Up to 325 conditions per place. [2024-06-04 15:28:02,802 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-04 15:28:02,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 396 flow [2024-06-04 15:28:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:02,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-04 15:28:02,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-04 15:28:02,804 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 212 flow. Second operand 7 states and 89 transitions. [2024-06-04 15:28:02,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 396 flow [2024-06-04 15:28:02,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 375 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:02,806 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 252 flow [2024-06-04 15:28:02,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-04 15:28:02,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-04 15:28:02,807 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 252 flow [2024-06-04 15:28:02,807 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 15:28:02,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:02,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:02,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 15:28:02,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 15:28:02,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -416319645, now seen corresponding path program 1 times [2024-06-04 15:28:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917896708] [2024-06-04 15:28:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:02,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:03,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:03,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917896708] [2024-06-04 15:28:03,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917896708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:03,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:03,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530827735] [2024-06-04 15:28:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:03,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:03,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:03,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:03,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 252 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 15:28:03,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:03,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:03,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:03,648 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-04 15:28:03,648 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-04 15:28:03,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1551 conditions, 401 events. 224/401 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1392 event pairs, 51 based on Foata normal form. 3/403 useless extension candidates. Maximal degree in co-relation 1523. Up to 346 conditions per place. [2024-06-04 15:28:03,651 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-04 15:28:03,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 458 flow [2024-06-04 15:28:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:03,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-04 15:28:03,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:28:03,652 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 252 flow. Second operand 7 states and 91 transitions. [2024-06-04 15:28:03,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 458 flow [2024-06-04 15:28:03,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 435 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-04 15:28:03,656 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 303 flow [2024-06-04 15:28:03,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-04 15:28:03,658 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-04 15:28:03,658 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 303 flow [2024-06-04 15:28:03,658 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 15:28:03,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:03,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:03,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 15:28:03,658 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 15:28:03,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:03,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1965164460, now seen corresponding path program 2 times [2024-06-04 15:28:03,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:03,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70568967] [2024-06-04 15:28:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:04,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:04,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70568967] [2024-06-04 15:28:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70568967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:04,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:04,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121349167] [2024-06-04 15:28:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:04,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:04,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:04,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 303 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 15:28:04,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:04,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:04,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:04,661 INFO L124 PetriNetUnfolderBase]: 227/406 cut-off events. [2024-06-04 15:28:04,661 INFO L125 PetriNetUnfolderBase]: For 2298/2298 co-relation queries the response was YES. [2024-06-04 15:28:04,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1697 conditions, 406 events. 227/406 cut-off events. For 2298/2298 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1415 event pairs, 50 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1666. Up to 376 conditions per place. [2024-06-04 15:28:04,663 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-04 15:28:04,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 461 flow [2024-06-04 15:28:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-04 15:28:04,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:28:04,665 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 303 flow. Second operand 7 states and 84 transitions. [2024-06-04 15:28:04,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 461 flow [2024-06-04 15:28:04,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 450 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-04 15:28:04,668 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 339 flow [2024-06-04 15:28:04,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=339, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-06-04 15:28:04,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-04 15:28:04,669 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 339 flow [2024-06-04 15:28:04,669 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 15:28:04,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:04,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:04,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 15:28:04,670 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 15:28:04,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:04,670 INFO L85 PathProgramCache]: Analyzing trace with hash 505317795, now seen corresponding path program 2 times [2024-06-04 15:28:04,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:04,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370512748] [2024-06-04 15:28:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:04,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:05,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370512748] [2024-06-04 15:28:05,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370512748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:05,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:05,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757194413] [2024-06-04 15:28:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:05,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:05,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:05,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:05,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 339 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 15:28:05,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:05,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:05,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:05,494 INFO L124 PetriNetUnfolderBase]: 236/421 cut-off events. [2024-06-04 15:28:05,494 INFO L125 PetriNetUnfolderBase]: For 2895/2895 co-relation queries the response was YES. [2024-06-04 15:28:05,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 421 events. 236/421 cut-off events. For 2895/2895 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1484 event pairs, 49 based on Foata normal form. 3/423 useless extension candidates. Maximal degree in co-relation 1781. Up to 380 conditions per place. [2024-06-04 15:28:05,497 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-06-04 15:28:05,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 535 flow [2024-06-04 15:28:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:05,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-04 15:28:05,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-04 15:28:05,498 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 339 flow. Second operand 7 states and 86 transitions. [2024-06-04 15:28:05,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 535 flow [2024-06-04 15:28:05,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 508 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:05,501 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 357 flow [2024-06-04 15:28:05,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-06-04 15:28:05,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-04 15:28:05,502 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 357 flow [2024-06-04 15:28:05,502 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 15:28:05,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:05,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:05,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 15:28:05,503 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 15:28:05,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:05,503 INFO L85 PathProgramCache]: Analyzing trace with hash -408960555, now seen corresponding path program 3 times [2024-06-04 15:28:05,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:05,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993897699] [2024-06-04 15:28:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:05,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:06,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:06,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993897699] [2024-06-04 15:28:06,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993897699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:06,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:06,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:06,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158761897] [2024-06-04 15:28:06,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:06,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:06,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:06,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:06,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 357 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 15:28:06,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:06,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:06,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:06,368 INFO L124 PetriNetUnfolderBase]: 230/412 cut-off events. [2024-06-04 15:28:06,368 INFO L125 PetriNetUnfolderBase]: For 3186/3186 co-relation queries the response was YES. [2024-06-04 15:28:06,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1800 conditions, 412 events. 230/412 cut-off events. For 3186/3186 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1442 event pairs, 47 based on Foata normal form. 3/414 useless extension candidates. Maximal degree in co-relation 1765. Up to 388 conditions per place. [2024-06-04 15:28:06,371 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-04 15:28:06,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 64 transitions, 503 flow [2024-06-04 15:28:06,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:06,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-04 15:28:06,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-04 15:28:06,372 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 357 flow. Second operand 7 states and 81 transitions. [2024-06-04 15:28:06,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 64 transitions, 503 flow [2024-06-04 15:28:06,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 465 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:06,379 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 344 flow [2024-06-04 15:28:06,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-04 15:28:06,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-04 15:28:06,380 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 344 flow [2024-06-04 15:28:06,380 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 15:28:06,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:06,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:06,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 15:28:06,381 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 15:28:06,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:06,381 INFO L85 PathProgramCache]: Analyzing trace with hash -843722950, now seen corresponding path program 3 times [2024-06-04 15:28:06,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:06,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354254029] [2024-06-04 15:28:06,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:06,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:07,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:07,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354254029] [2024-06-04 15:28:07,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354254029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:07,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:07,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:07,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759873609] [2024-06-04 15:28:07,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:07,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:07,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:07,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:07,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:07,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:07,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 344 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 15:28:07,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:07,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:07,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:07,392 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-04 15:28:07,392 INFO L125 PetriNetUnfolderBase]: For 3304/3304 co-relation queries the response was YES. [2024-06-04 15:28:07,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 409 events. 228/409 cut-off events. For 3304/3304 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1438 event pairs, 47 based on Foata normal form. 1/409 useless extension candidates. Maximal degree in co-relation 1751. Up to 391 conditions per place. [2024-06-04 15:28:07,395 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-04 15:28:07,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 62 transitions, 480 flow [2024-06-04 15:28:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 15:28:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 15:28:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-04 15:28:07,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-04 15:28:07,396 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 344 flow. Second operand 7 states and 79 transitions. [2024-06-04 15:28:07,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 62 transitions, 480 flow [2024-06-04 15:28:07,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 452 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:07,400 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 341 flow [2024-06-04 15:28:07,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-06-04 15:28:07,401 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-04 15:28:07,402 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 341 flow [2024-06-04 15:28:07,402 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 15:28:07,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:07,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:07,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 15:28:07,402 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 15:28:07,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:07,403 INFO L85 PathProgramCache]: Analyzing trace with hash -21190711, now seen corresponding path program 1 times [2024-06-04 15:28:07,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:07,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962333066] [2024-06-04 15:28:07,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:07,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:08,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:08,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962333066] [2024-06-04 15:28:08,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962333066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:08,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:08,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3949444] [2024-06-04 15:28:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:08,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:08,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:08,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:08,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 341 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 15:28:08,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:08,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:08,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:08,733 INFO L124 PetriNetUnfolderBase]: 234/419 cut-off events. [2024-06-04 15:28:08,733 INFO L125 PetriNetUnfolderBase]: For 3882/3882 co-relation queries the response was YES. [2024-06-04 15:28:08,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 419 events. 234/419 cut-off events. For 3882/3882 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1492 event pairs, 46 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 1812. Up to 366 conditions per place. [2024-06-04 15:28:08,736 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-04 15:28:08,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 545 flow [2024-06-04 15:28:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-04 15:28:08,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-04 15:28:08,737 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 341 flow. Second operand 8 states and 99 transitions. [2024-06-04 15:28:08,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 545 flow [2024-06-04 15:28:08,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 510 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:08,741 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 354 flow [2024-06-04 15:28:08,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=354, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-04 15:28:08,742 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-04 15:28:08,743 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 354 flow [2024-06-04 15:28:08,743 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 15:28:08,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:08,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:08,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 15:28:08,744 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 15:28:08,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash 785915425, now seen corresponding path program 1 times [2024-06-04 15:28:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:08,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855262041] [2024-06-04 15:28:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:09,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:09,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855262041] [2024-06-04 15:28:09,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855262041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:09,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:09,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:09,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011613438] [2024-06-04 15:28:09,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:09,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:09,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:09,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:09,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:09,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 354 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 15:28:09,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:09,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:09,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:09,835 INFO L124 PetriNetUnfolderBase]: 247/440 cut-off events. [2024-06-04 15:28:09,835 INFO L125 PetriNetUnfolderBase]: For 4535/4535 co-relation queries the response was YES. [2024-06-04 15:28:09,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 440 events. 247/440 cut-off events. For 4535/4535 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1600 event pairs, 47 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 1968. Up to 331 conditions per place. [2024-06-04 15:28:09,838 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-04 15:28:09,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 606 flow [2024-06-04 15:28:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:09,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-04 15:28:09,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-04 15:28:09,839 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 354 flow. Second operand 8 states and 105 transitions. [2024-06-04 15:28:09,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 606 flow [2024-06-04 15:28:09,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 576 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:09,844 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 424 flow [2024-06-04 15:28:09,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=424, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-06-04 15:28:09,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-04 15:28:09,844 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 424 flow [2024-06-04 15:28:09,845 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 15:28:09,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:09,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:09,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 15:28:09,845 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 15:28:09,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash 785915239, now seen corresponding path program 2 times [2024-06-04 15:28:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:09,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914195691] [2024-06-04 15:28:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:09,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:10,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:10,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:10,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914195691] [2024-06-04 15:28:10,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914195691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:10,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:10,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:10,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088373620] [2024-06-04 15:28:10,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:10,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:10,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:10,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:10,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:10,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 424 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 15:28:10,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:10,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:10,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:10,984 INFO L124 PetriNetUnfolderBase]: 253/450 cut-off events. [2024-06-04 15:28:10,985 INFO L125 PetriNetUnfolderBase]: For 5412/5412 co-relation queries the response was YES. [2024-06-04 15:28:10,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 450 events. 253/450 cut-off events. For 5412/5412 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1637 event pairs, 49 based on Foata normal form. 2/451 useless extension candidates. Maximal degree in co-relation 2175. Up to 362 conditions per place. [2024-06-04 15:28:10,988 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 24 changer transitions 0/84 dead transitions. [2024-06-04 15:28:10,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 700 flow [2024-06-04 15:28:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-04 15:28:10,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-04 15:28:10,989 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 424 flow. Second operand 8 states and 103 transitions. [2024-06-04 15:28:10,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 700 flow [2024-06-04 15:28:10,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 670 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:10,994 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 483 flow [2024-06-04 15:28:10,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=483, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2024-06-04 15:28:10,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-04 15:28:10,995 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 483 flow [2024-06-04 15:28:10,995 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 15:28:10,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:10,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:10,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 15:28:10,996 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 15:28:10,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash 790556869, now seen corresponding path program 3 times [2024-06-04 15:28:10,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:10,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9555562] [2024-06-04 15:28:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:10,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:11,917 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 15:28:11,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:11,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9555562] [2024-06-04 15:28:11,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9555562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:11,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:11,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777279429] [2024-06-04 15:28:11,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:11,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:11,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:12,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:12,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 483 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 15:28:12,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:12,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:12,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:12,187 INFO L124 PetriNetUnfolderBase]: 256/455 cut-off events. [2024-06-04 15:28:12,188 INFO L125 PetriNetUnfolderBase]: For 5980/5980 co-relation queries the response was YES. [2024-06-04 15:28:12,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 455 events. 256/455 cut-off events. For 5980/5980 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1671 event pairs, 48 based on Foata normal form. 1/455 useless extension candidates. Maximal degree in co-relation 2302. Up to 422 conditions per place. [2024-06-04 15:28:12,191 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-04 15:28:12,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 79 transitions, 679 flow [2024-06-04 15:28:12,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-04 15:28:12,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-04 15:28:12,192 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 483 flow. Second operand 8 states and 93 transitions. [2024-06-04 15:28:12,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 79 transitions, 679 flow [2024-06-04 15:28:12,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 643 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:12,199 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 502 flow [2024-06-04 15:28:12,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-04 15:28:12,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-04 15:28:12,200 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 502 flow [2024-06-04 15:28:12,201 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 15:28:12,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:12,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 15:28:12,202 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 15:28:12,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:12,202 INFO L85 PathProgramCache]: Analyzing trace with hash 790557055, now seen corresponding path program 2 times [2024-06-04 15:28:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:12,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298128147] [2024-06-04 15:28:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:13,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:13,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298128147] [2024-06-04 15:28:13,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298128147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:13,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:13,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839910091] [2024-06-04 15:28:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:13,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:13,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:13,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:13,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:13,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 502 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 15:28:13,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:13,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:13,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:13,418 INFO L124 PetriNetUnfolderBase]: 274/484 cut-off events. [2024-06-04 15:28:13,419 INFO L125 PetriNetUnfolderBase]: For 7067/7067 co-relation queries the response was YES. [2024-06-04 15:28:13,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 484 events. 274/484 cut-off events. For 7067/7067 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1813 event pairs, 47 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 2526. Up to 406 conditions per place. [2024-06-04 15:28:13,422 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2024-06-04 15:28:13,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 795 flow [2024-06-04 15:28:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:13,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:13,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-04 15:28:13,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:28:13,424 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 502 flow. Second operand 8 states and 104 transitions. [2024-06-04 15:28:13,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 795 flow [2024-06-04 15:28:13,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 760 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:13,430 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 562 flow [2024-06-04 15:28:13,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=562, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-04 15:28:13,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-04 15:28:13,431 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 562 flow [2024-06-04 15:28:13,431 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 15:28:13,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:13,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:13,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 15:28:13,432 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 15:28:13,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2022695997, now seen corresponding path program 3 times [2024-06-04 15:28:13,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:13,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520936685] [2024-06-04 15:28:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:13,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:14,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520936685] [2024-06-04 15:28:14,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520936685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:14,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:14,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:14,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933543815] [2024-06-04 15:28:14,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:14,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:14,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:14,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:14,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:14,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 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 15:28:14,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:14,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:14,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:14,484 INFO L124 PetriNetUnfolderBase]: 268/475 cut-off events. [2024-06-04 15:28:14,485 INFO L125 PetriNetUnfolderBase]: For 7719/7719 co-relation queries the response was YES. [2024-06-04 15:28:14,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2580 conditions, 475 events. 268/475 cut-off events. For 7719/7719 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1775 event pairs, 47 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2536. Up to 407 conditions per place. [2024-06-04 15:28:14,488 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 20 changer transitions 0/89 dead transitions. [2024-06-04 15:28:14,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 784 flow [2024-06-04 15:28:14,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:14,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-04 15:28:14,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-04 15:28:14,490 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 562 flow. Second operand 8 states and 101 transitions. [2024-06-04 15:28:14,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 784 flow [2024-06-04 15:28:14,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 759 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:14,497 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 583 flow [2024-06-04 15:28:14,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=583, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-06-04 15:28:14,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-04 15:28:14,498 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 583 flow [2024-06-04 15:28:14,498 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 15:28:14,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:14,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:14,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 15:28:14,498 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 15:28:14,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:14,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1515016817, now seen corresponding path program 4 times [2024-06-04 15:28:14,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:14,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548459001] [2024-06-04 15:28:14,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:14,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:15,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:15,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548459001] [2024-06-04 15:28:15,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548459001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:15,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:15,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:15,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664295484] [2024-06-04 15:28:15,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:15,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:15,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:15,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:15,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:15,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 583 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 15:28:15,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:15,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:15,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:15,628 INFO L124 PetriNetUnfolderBase]: 277/490 cut-off events. [2024-06-04 15:28:15,628 INFO L125 PetriNetUnfolderBase]: For 8514/8514 co-relation queries the response was YES. [2024-06-04 15:28:15,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2740 conditions, 490 events. 277/490 cut-off events. For 8514/8514 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1838 event pairs, 47 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 2694. Up to 443 conditions per place. [2024-06-04 15:28:15,631 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 71 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-06-04 15:28:15,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 822 flow [2024-06-04 15:28:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 15:28:15,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:28:15,643 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 583 flow. Second operand 8 states and 96 transitions. [2024-06-04 15:28:15,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 822 flow [2024-06-04 15:28:15,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 777 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:15,652 INFO L231 Difference]: Finished difference. Result has 91 places, 76 transitions, 607 flow [2024-06-04 15:28:15,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=607, PETRI_PLACES=91, PETRI_TRANSITIONS=76} [2024-06-04 15:28:15,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-04 15:28:15,653 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 607 flow [2024-06-04 15:28:15,653 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 15:28:15,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:15,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:15,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 15:28:15,653 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 15:28:15,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash -385606735, now seen corresponding path program 5 times [2024-06-04 15:28:15,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:15,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27836925] [2024-06-04 15:28:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:15,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:16,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:16,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27836925] [2024-06-04 15:28:16,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27836925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:16,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:16,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:16,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138104111] [2024-06-04 15:28:16,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:16,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:16,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:16,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:16,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:16,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:16,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 76 transitions, 607 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 15:28:16,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:16,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:16,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:16,674 INFO L124 PetriNetUnfolderBase]: 280/495 cut-off events. [2024-06-04 15:28:16,674 INFO L125 PetriNetUnfolderBase]: For 8892/8892 co-relation queries the response was YES. [2024-06-04 15:28:16,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 495 events. 280/495 cut-off events. For 8892/8892 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1867 event pairs, 46 based on Foata normal form. 1/495 useless extension candidates. Maximal degree in co-relation 2761. Up to 427 conditions per place. [2024-06-04 15:28:16,678 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-06-04 15:28:16,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 90 transitions, 877 flow [2024-06-04 15:28:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:16,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-04 15:28:16,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:28:16,679 INFO L175 Difference]: Start difference. First operand has 91 places, 76 transitions, 607 flow. Second operand 8 states and 96 transitions. [2024-06-04 15:28:16,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 90 transitions, 877 flow [2024-06-04 15:28:16,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 839 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:16,687 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 638 flow [2024-06-04 15:28:16,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=638, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2024-06-04 15:28:16,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-04 15:28:16,688 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 638 flow [2024-06-04 15:28:16,688 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 15:28:16,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:16,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:16,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 15:28:16,689 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 15:28:16,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:16,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1393121083, now seen corresponding path program 4 times [2024-06-04 15:28:16,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:16,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270489663] [2024-06-04 15:28:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:16,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:17,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270489663] [2024-06-04 15:28:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270489663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:17,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:17,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:17,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270892715] [2024-06-04 15:28:17,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:17,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:17,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:17,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:17,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 638 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 15:28:17,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:17,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:17,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:17,692 INFO L124 PetriNetUnfolderBase]: 281/497 cut-off events. [2024-06-04 15:28:17,692 INFO L125 PetriNetUnfolderBase]: For 9742/9742 co-relation queries the response was YES. [2024-06-04 15:28:17,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2850 conditions, 497 events. 281/497 cut-off events. For 9742/9742 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1868 event pairs, 51 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2802. Up to 473 conditions per place. [2024-06-04 15:28:17,696 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-06-04 15:28:17,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 856 flow [2024-06-04 15:28:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-04 15:28:17,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-04 15:28:17,697 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 638 flow. Second operand 8 states and 89 transitions. [2024-06-04 15:28:17,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 856 flow [2024-06-04 15:28:17,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 765 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:17,706 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 600 flow [2024-06-04 15:28:17,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=85, 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=600, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-04 15:28:17,706 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-04 15:28:17,706 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 600 flow [2024-06-04 15:28:17,706 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 15:28:17,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:17,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:17,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 15:28:17,707 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 15:28:17,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash 215177593, now seen corresponding path program 1 times [2024-06-04 15:28:17,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:17,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536445010] [2024-06-04 15:28:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:17,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:18,331 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 15:28:18,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:18,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536445010] [2024-06-04 15:28:18,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536445010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:18,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:18,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 15:28:18,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884184643] [2024-06-04 15:28:18,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:18,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 15:28:18,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:18,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 15:28:18,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-04 15:28:18,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:18,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 600 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:18,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:18,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:18,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:18,539 INFO L124 PetriNetUnfolderBase]: 282/499 cut-off events. [2024-06-04 15:28:18,540 INFO L125 PetriNetUnfolderBase]: For 10327/10327 co-relation queries the response was YES. [2024-06-04 15:28:18,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 499 events. 282/499 cut-off events. For 10327/10327 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1875 event pairs, 48 based on Foata normal form. 2/500 useless extension candidates. Maximal degree in co-relation 2708. Up to 475 conditions per place. [2024-06-04 15:28:18,543 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 14 changer transitions 0/94 dead transitions. [2024-06-04 15:28:18,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 837 flow [2024-06-04 15:28:18,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 15:28:18,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:28:18,544 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 600 flow. Second operand 8 states and 90 transitions. [2024-06-04 15:28:18,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 837 flow [2024-06-04 15:28:18,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 804 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:18,553 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 651 flow [2024-06-04 15:28:18,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=97, PETRI_TRANSITIONS=86} [2024-06-04 15:28:18,553 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-04 15:28:18,554 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 651 flow [2024-06-04 15:28:18,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:28:18,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:18,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:18,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 15:28:18,554 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 15:28:18,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1384840177, now seen corresponding path program 6 times [2024-06-04 15:28:18,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:18,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945331836] [2024-06-04 15:28:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:18,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:19,308 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 15:28:19,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:19,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945331836] [2024-06-04 15:28:19,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945331836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:19,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:19,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 15:28:19,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715132716] [2024-06-04 15:28:19,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:19,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 15:28:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 15:28:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 15:28:19,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:19,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 86 transitions, 651 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 15:28:19,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:19,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:19,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:19,621 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-04 15:28:19,621 INFO L125 PetriNetUnfolderBase]: For 10484/10484 co-relation queries the response was YES. [2024-06-04 15:28:19,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2748 conditions, 490 events. 276/490 cut-off events. For 10484/10484 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1856 event pairs, 45 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 2698. Up to 455 conditions per place. [2024-06-04 15:28:19,624 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-04 15:28:19,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 871 flow [2024-06-04 15:28:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:19,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-04 15:28:19,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:28:19,626 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 651 flow. Second operand 8 states and 92 transitions. [2024-06-04 15:28:19,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 871 flow [2024-06-04 15:28:19,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 96 transitions, 841 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-04 15:28:19,635 INFO L231 Difference]: Finished difference. Result has 102 places, 86 transitions, 655 flow [2024-06-04 15:28:19,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=655, PETRI_PLACES=102, PETRI_TRANSITIONS=86} [2024-06-04 15:28:19,635 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-04 15:28:19,635 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 86 transitions, 655 flow [2024-06-04 15:28:19,636 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 15:28:19,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:19,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 15:28:19,636 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 15:28:19,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash 215476805, now seen corresponding path program 1 times [2024-06-04 15:28:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:19,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290194127] [2024-06-04 15:28:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:20,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:20,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290194127] [2024-06-04 15:28:20,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290194127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:20,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:20,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:20,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570495734] [2024-06-04 15:28:20,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:20,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:20,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:20,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:20,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 86 transitions, 655 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 15:28:20,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:20,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:20,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:20,952 INFO L124 PetriNetUnfolderBase]: 273/485 cut-off events. [2024-06-04 15:28:20,952 INFO L125 PetriNetUnfolderBase]: For 10480/10480 co-relation queries the response was YES. [2024-06-04 15:28:20,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 485 events. 273/485 cut-off events. For 10480/10480 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1808 event pairs, 46 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2664. Up to 458 conditions per place. [2024-06-04 15:28:20,956 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 79 selfloop transitions, 13 changer transitions 0/94 dead transitions. [2024-06-04 15:28:20,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 94 transitions, 857 flow [2024-06-04 15:28:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-04 15:28:20,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:28:20,960 INFO L175 Difference]: Start difference. First operand has 102 places, 86 transitions, 655 flow. Second operand 8 states and 88 transitions. [2024-06-04 15:28:20,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 94 transitions, 857 flow [2024-06-04 15:28:20,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 94 transitions, 814 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:20,969 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 642 flow [2024-06-04 15:28:20,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=642, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2024-06-04 15:28:20,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-04 15:28:20,969 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 642 flow [2024-06-04 15:28:20,970 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 15:28:20,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:20,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:20,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 15:28:20,970 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 15:28:20,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1868749770, now seen corresponding path program 1 times [2024-06-04 15:28:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:20,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103099216] [2024-06-04 15:28:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:20,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:21,960 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 15:28:21,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:21,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103099216] [2024-06-04 15:28:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103099216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:21,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:21,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:21,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127850768] [2024-06-04 15:28:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:22,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:22,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 642 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 15:28:22,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:22,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:22,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:22,342 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-04 15:28:22,342 INFO L125 PetriNetUnfolderBase]: For 10896/10896 co-relation queries the response was YES. [2024-06-04 15:28:22,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2740 conditions, 490 events. 276/490 cut-off events. For 10896/10896 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1844 event pairs, 45 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2686. Up to 448 conditions per place. [2024-06-04 15:28:22,346 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2024-06-04 15:28:22,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 107 transitions, 925 flow [2024-06-04 15:28:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 15:28:22,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-04 15:28:22,348 INFO L175 Difference]: Start difference. First operand has 103 places, 86 transitions, 642 flow. Second operand 9 states and 106 transitions. [2024-06-04 15:28:22,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 107 transitions, 925 flow [2024-06-04 15:28:22,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 892 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:22,359 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 678 flow [2024-06-04 15:28:22,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=678, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-04 15:28:22,360 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-04 15:28:22,360 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 678 flow [2024-06-04 15:28:22,360 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 15:28:22,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:22,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:22,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 15:28:22,360 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 15:28:22,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1406424631, now seen corresponding path program 1 times [2024-06-04 15:28:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541599076] [2024-06-04 15:28:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:22,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:23,316 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 15:28:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541599076] [2024-06-04 15:28:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541599076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:23,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:23,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100023113] [2024-06-04 15:28:23,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:23,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:23,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:23,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:23,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 678 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 15:28:23,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:23,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:23,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:23,684 INFO L124 PetriNetUnfolderBase]: 292/516 cut-off events. [2024-06-04 15:28:23,684 INFO L125 PetriNetUnfolderBase]: For 12749/12749 co-relation queries the response was YES. [2024-06-04 15:28:23,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2969 conditions, 516 events. 292/516 cut-off events. For 12749/12749 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1992 event pairs, 41 based on Foata normal form. 2/517 useless extension candidates. Maximal degree in co-relation 2913. Up to 376 conditions per place. [2024-06-04 15:28:23,687 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 75 selfloop transitions, 36 changer transitions 0/113 dead transitions. [2024-06-04 15:28:23,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 1048 flow [2024-06-04 15:28:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 15:28:23,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 15:28:23,688 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 678 flow. Second operand 9 states and 115 transitions. [2024-06-04 15:28:23,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 1048 flow [2024-06-04 15:28:23,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 1013 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:23,704 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 756 flow [2024-06-04 15:28:23,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=756, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2024-06-04 15:28:23,704 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-04 15:28:23,704 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 756 flow [2024-06-04 15:28:23,704 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 15:28:23,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:23,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:23,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 15:28:23,705 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 15:28:23,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash -656761372, now seen corresponding path program 2 times [2024-06-04 15:28:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:23,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875577174] [2024-06-04 15:28:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:23,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:24,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:24,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875577174] [2024-06-04 15:28:24,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875577174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:24,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:24,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:24,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313172157] [2024-06-04 15:28:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:24,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:24,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:24,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:24,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:24,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:24,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 756 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 15:28:24,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:24,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:24,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:24,923 INFO L124 PetriNetUnfolderBase]: 328/574 cut-off events. [2024-06-04 15:28:24,924 INFO L125 PetriNetUnfolderBase]: For 16245/16245 co-relation queries the response was YES. [2024-06-04 15:28:24,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 574 events. 328/574 cut-off events. For 16245/16245 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2282 event pairs, 40 based on Foata normal form. 2/575 useless extension candidates. Maximal degree in co-relation 3447. Up to 330 conditions per place. [2024-06-04 15:28:24,927 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 46 changer transitions 0/124 dead transitions. [2024-06-04 15:28:24,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 1262 flow [2024-06-04 15:28:24,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-04 15:28:24,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-04 15:28:24,928 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 756 flow. Second operand 9 states and 122 transitions. [2024-06-04 15:28:24,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 1262 flow [2024-06-04 15:28:24,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 124 transitions, 1219 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:24,945 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 917 flow [2024-06-04 15:28:24,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-06-04 15:28:24,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-04 15:28:24,946 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 917 flow [2024-06-04 15:28:24,946 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 15:28:24,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:24,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:24,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 15:28:24,947 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 15:28:24,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:24,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1865030700, now seen corresponding path program 3 times [2024-06-04 15:28:24,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:24,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154586108] [2024-06-04 15:28:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:24,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:25,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:25,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154586108] [2024-06-04 15:28:25,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154586108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:25,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:25,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:25,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751697279] [2024-06-04 15:28:25,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:25,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:25,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:25,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:25,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 917 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 15:28:25,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:25,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:25,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:26,138 INFO L124 PetriNetUnfolderBase]: 329/576 cut-off events. [2024-06-04 15:28:26,140 INFO L125 PetriNetUnfolderBase]: For 17302/17302 co-relation queries the response was YES. [2024-06-04 15:28:26,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 576 events. 329/576 cut-off events. For 17302/17302 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2284 event pairs, 43 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 3660. Up to 333 conditions per place. [2024-06-04 15:28:26,143 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 46 changer transitions 0/125 dead transitions. [2024-06-04 15:28:26,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 125 transitions, 1369 flow [2024-06-04 15:28:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-04 15:28:26,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-04 15:28:26,145 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 917 flow. Second operand 9 states and 123 transitions. [2024-06-04 15:28:26,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 125 transitions, 1369 flow [2024-06-04 15:28:26,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 125 transitions, 1306 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:26,164 INFO L231 Difference]: Finished difference. Result has 120 places, 104 transitions, 973 flow [2024-06-04 15:28:26,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=973, PETRI_PLACES=120, PETRI_TRANSITIONS=104} [2024-06-04 15:28:26,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-04 15:28:26,165 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 104 transitions, 973 flow [2024-06-04 15:28:26,165 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 15:28:26,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:26,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:26,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 15:28:26,166 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 15:28:26,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1262539898, now seen corresponding path program 4 times [2024-06-04 15:28:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:26,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018856758] [2024-06-04 15:28:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:27,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:27,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018856758] [2024-06-04 15:28:27,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018856758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:27,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:27,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:27,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917278286] [2024-06-04 15:28:27,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:27,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:27,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:27,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:27,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:27,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:27,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 104 transitions, 973 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 15:28:27,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:27,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:27,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:27,354 INFO L124 PetriNetUnfolderBase]: 366/636 cut-off events. [2024-06-04 15:28:27,355 INFO L125 PetriNetUnfolderBase]: For 21480/21480 co-relation queries the response was YES. [2024-06-04 15:28:27,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 636 events. 366/636 cut-off events. For 21480/21480 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2591 event pairs, 49 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 4242. Up to 511 conditions per place. [2024-06-04 15:28:27,359 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 31 changer transitions 0/128 dead transitions. [2024-06-04 15:28:27,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 128 transitions, 1414 flow [2024-06-04 15:28:27,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:27,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-04 15:28:27,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-04 15:28:27,361 INFO L175 Difference]: Start difference. First operand has 120 places, 104 transitions, 973 flow. Second operand 9 states and 118 transitions. [2024-06-04 15:28:27,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 128 transitions, 1414 flow [2024-06-04 15:28:27,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 128 transitions, 1317 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:27,383 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 1026 flow [2024-06-04 15:28:27,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1026, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2024-06-04 15:28:27,383 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-04 15:28:27,383 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 1026 flow [2024-06-04 15:28:27,383 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 15:28:27,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:27,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:27,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 15:28:27,384 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 15:28:27,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:27,384 INFO L85 PathProgramCache]: Analyzing trace with hash -651404727, now seen corresponding path program 1 times [2024-06-04 15:28:27,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:27,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004152636] [2024-06-04 15:28:27,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:27,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:28,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:28,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004152636] [2024-06-04 15:28:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004152636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:28,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:28,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088115478] [2024-06-04 15:28:28,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:28,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:28,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:28,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:28,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:28,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:28,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 1026 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 15:28:28,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:28,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:28,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:28,659 INFO L124 PetriNetUnfolderBase]: 363/631 cut-off events. [2024-06-04 15:28:28,659 INFO L125 PetriNetUnfolderBase]: For 21851/21851 co-relation queries the response was YES. [2024-06-04 15:28:28,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4272 conditions, 631 events. 363/631 cut-off events. For 21851/21851 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2550 event pairs, 66 based on Foata normal form. 1/631 useless extension candidates. Maximal degree in co-relation 4209. Up to 595 conditions per place. [2024-06-04 15:28:28,663 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 18 changer transitions 0/120 dead transitions. [2024-06-04 15:28:28,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 120 transitions, 1290 flow [2024-06-04 15:28:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 15:28:28,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:28:28,664 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 1026 flow. Second operand 9 states and 102 transitions. [2024-06-04 15:28:28,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 120 transitions, 1290 flow [2024-06-04 15:28:28,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 120 transitions, 1233 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:28,684 INFO L231 Difference]: Finished difference. Result has 128 places, 109 transitions, 1010 flow [2024-06-04 15:28:28,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1010, PETRI_PLACES=128, PETRI_TRANSITIONS=109} [2024-06-04 15:28:28,685 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-04 15:28:28,685 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 109 transitions, 1010 flow [2024-06-04 15:28:28,685 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 15:28:28,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:28,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:28,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-04 15:28:28,686 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 15:28:28,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:28,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1721134590, now seen corresponding path program 5 times [2024-06-04 15:28:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:28,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845165233] [2024-06-04 15:28:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:28,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:29,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:29,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845165233] [2024-06-04 15:28:29,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845165233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:29,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:29,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:29,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453706169] [2024-06-04 15:28:29,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:29,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:29,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:29,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:29,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:29,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 109 transitions, 1010 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 15:28:29,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:29,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:29,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:29,960 INFO L124 PetriNetUnfolderBase]: 366/636 cut-off events. [2024-06-04 15:28:29,960 INFO L125 PetriNetUnfolderBase]: For 22907/22907 co-relation queries the response was YES. [2024-06-04 15:28:29,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 636 events. 366/636 cut-off events. For 22907/22907 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2584 event pairs, 52 based on Foata normal form. 1/636 useless extension candidates. Maximal degree in co-relation 4254. Up to 538 conditions per place. [2024-06-04 15:28:29,964 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 31 changer transitions 0/132 dead transitions. [2024-06-04 15:28:29,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 132 transitions, 1442 flow [2024-06-04 15:28:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-04 15:28:29,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-04 15:28:29,965 INFO L175 Difference]: Start difference. First operand has 128 places, 109 transitions, 1010 flow. Second operand 9 states and 115 transitions. [2024-06-04 15:28:29,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 132 transitions, 1442 flow [2024-06-04 15:28:29,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 132 transitions, 1387 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:29,995 INFO L231 Difference]: Finished difference. Result has 131 places, 116 transitions, 1108 flow [2024-06-04 15:28:29,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1108, PETRI_PLACES=131, PETRI_TRANSITIONS=116} [2024-06-04 15:28:29,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-04 15:28:29,996 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 116 transitions, 1108 flow [2024-06-04 15:28:29,996 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 15:28:29,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:29,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:29,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-04 15:28:29,996 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 15:28:29,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:29,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1262534101, now seen corresponding path program 2 times [2024-06-04 15:28:29,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:29,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395922011] [2024-06-04 15:28:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:29,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:31,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:31,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395922011] [2024-06-04 15:28:31,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395922011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:31,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:31,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:31,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880016383] [2024-06-04 15:28:31,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:31,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:31,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 116 transitions, 1108 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 15:28:31,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:31,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:31,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:31,287 INFO L124 PetriNetUnfolderBase]: 382/662 cut-off events. [2024-06-04 15:28:31,287 INFO L125 PetriNetUnfolderBase]: For 26184/26184 co-relation queries the response was YES. [2024-06-04 15:28:31,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 662 events. 382/662 cut-off events. For 26184/26184 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2734 event pairs, 55 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 4575. Up to 573 conditions per place. [2024-06-04 15:28:31,292 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 27 changer transitions 0/137 dead transitions. [2024-06-04 15:28:31,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 1530 flow [2024-06-04 15:28:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:31,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:31,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-04 15:28:31,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:28:31,293 INFO L175 Difference]: Start difference. First operand has 131 places, 116 transitions, 1108 flow. Second operand 9 states and 114 transitions. [2024-06-04 15:28:31,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 1530 flow [2024-06-04 15:28:31,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 1493 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-04 15:28:31,319 INFO L231 Difference]: Finished difference. Result has 136 places, 120 transitions, 1170 flow [2024-06-04 15:28:31,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=136, PETRI_TRANSITIONS=120} [2024-06-04 15:28:31,319 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-04 15:28:31,319 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 120 transitions, 1170 flow [2024-06-04 15:28:31,319 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 15:28:31,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:31,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:31,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-04 15:28:31,320 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 15:28:31,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:31,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1720932563, now seen corresponding path program 3 times [2024-06-04 15:28:31,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:31,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194806008] [2024-06-04 15:28:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:31,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:32,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:32,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194806008] [2024-06-04 15:28:32,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194806008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:32,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:32,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:32,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449394432] [2024-06-04 15:28:32,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:32,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:32,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:32,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:32,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:32,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:32,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 120 transitions, 1170 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 15:28:32,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:32,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:32,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:32,719 INFO L124 PetriNetUnfolderBase]: 378/656 cut-off events. [2024-06-04 15:28:32,719 INFO L125 PetriNetUnfolderBase]: For 26582/26582 co-relation queries the response was YES. [2024-06-04 15:28:32,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 656 events. 378/656 cut-off events. For 26582/26582 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2714 event pairs, 48 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4585. Up to 582 conditions per place. [2024-06-04 15:28:32,723 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 111 selfloop transitions, 23 changer transitions 0/136 dead transitions. [2024-06-04 15:28:32,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 136 transitions, 1486 flow [2024-06-04 15:28:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-04 15:28:32,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 15:28:32,725 INFO L175 Difference]: Start difference. First operand has 136 places, 120 transitions, 1170 flow. Second operand 9 states and 111 transitions. [2024-06-04 15:28:32,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 136 transitions, 1486 flow [2024-06-04 15:28:32,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 1446 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 15:28:32,757 INFO L231 Difference]: Finished difference. Result has 140 places, 120 transitions, 1181 flow [2024-06-04 15:28:32,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1181, PETRI_PLACES=140, PETRI_TRANSITIONS=120} [2024-06-04 15:28:32,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-04 15:28:32,758 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 120 transitions, 1181 flow [2024-06-04 15:28:32,758 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 15:28:32,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:32,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:32,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-04 15:28:32,759 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 15:28:32,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1262332508, now seen corresponding path program 6 times [2024-06-04 15:28:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36241054] [2024-06-04 15:28:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:33,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:33,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36241054] [2024-06-04 15:28:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36241054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:33,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162241412] [2024-06-04 15:28:33,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:33,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:33,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:33,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:33,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:33,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:33,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 120 transitions, 1181 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 15:28:33,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:33,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:33,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:33,930 INFO L124 PetriNetUnfolderBase]: 372/647 cut-off events. [2024-06-04 15:28:33,930 INFO L125 PetriNetUnfolderBase]: For 26717/26717 co-relation queries the response was YES. [2024-06-04 15:28:33,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 647 events. 372/647 cut-off events. For 26717/26717 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2665 event pairs, 48 based on Foata normal form. 3/649 useless extension candidates. Maximal degree in co-relation 4517. Up to 568 conditions per place. [2024-06-04 15:28:33,934 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 24 changer transitions 0/136 dead transitions. [2024-06-04 15:28:33,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 136 transitions, 1497 flow [2024-06-04 15:28:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:33,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-04 15:28:33,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-04 15:28:33,945 INFO L175 Difference]: Start difference. First operand has 140 places, 120 transitions, 1181 flow. Second operand 9 states and 112 transitions. [2024-06-04 15:28:33,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 136 transitions, 1497 flow [2024-06-04 15:28:33,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 136 transitions, 1432 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:33,983 INFO L231 Difference]: Finished difference. Result has 141 places, 120 transitions, 1170 flow [2024-06-04 15:28:33,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1170, PETRI_PLACES=141, PETRI_TRANSITIONS=120} [2024-06-04 15:28:33,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-04 15:28:33,984 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 120 transitions, 1170 flow [2024-06-04 15:28:33,984 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 15:28:33,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:33,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:33,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-04 15:28:33,984 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 15:28:33,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash 275939062, now seen corresponding path program 7 times [2024-06-04 15:28:33,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:33,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335196666] [2024-06-04 15:28:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:33,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:34,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:34,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335196666] [2024-06-04 15:28:34,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335196666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:34,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:34,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641652120] [2024-06-04 15:28:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:34,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:34,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:34,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 120 transitions, 1170 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 15:28:34,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:34,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:34,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:35,155 INFO L124 PetriNetUnfolderBase]: 378/657 cut-off events. [2024-06-04 15:28:35,156 INFO L125 PetriNetUnfolderBase]: For 27538/27538 co-relation queries the response was YES. [2024-06-04 15:28:35,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4681 conditions, 657 events. 378/657 cut-off events. For 27538/27538 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2711 event pairs, 51 based on Foata normal form. 2/658 useless extension candidates. Maximal degree in co-relation 4608. Up to 538 conditions per place. [2024-06-04 15:28:35,160 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 29 changer transitions 0/137 dead transitions. [2024-06-04 15:28:35,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 1590 flow [2024-06-04 15:28:35,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:28:35,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:28:35,169 INFO L175 Difference]: Start difference. First operand has 141 places, 120 transitions, 1170 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:28:35,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 1590 flow [2024-06-04 15:28:35,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 137 transitions, 1534 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:35,208 INFO L231 Difference]: Finished difference. Result has 142 places, 122 transitions, 1203 flow [2024-06-04 15:28:35,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1203, PETRI_PLACES=142, PETRI_TRANSITIONS=122} [2024-06-04 15:28:35,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-04 15:28:35,209 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 122 transitions, 1203 flow [2024-06-04 15:28:35,209 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 15:28:35,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:35,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:35,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-04 15:28:35,209 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 15:28:35,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:35,210 INFO L85 PathProgramCache]: Analyzing trace with hash 2118771389, now seen corresponding path program 4 times [2024-06-04 15:28:35,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195139357] [2024-06-04 15:28:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:36,404 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 15:28:36,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:36,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195139357] [2024-06-04 15:28:36,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195139357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:36,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:36,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:36,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359641272] [2024-06-04 15:28:36,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:36,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:36,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:36,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:36,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:36,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:36,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 122 transitions, 1203 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 15:28:36,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:36,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:36,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:36,821 INFO L124 PetriNetUnfolderBase]: 384/667 cut-off events. [2024-06-04 15:28:36,821 INFO L125 PetriNetUnfolderBase]: For 29410/29410 co-relation queries the response was YES. [2024-06-04 15:28:36,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4789 conditions, 667 events. 384/667 cut-off events. For 29410/29410 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2756 event pairs, 57 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 4715. Up to 614 conditions per place. [2024-06-04 15:28:36,825 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 19 changer transitions 0/138 dead transitions. [2024-06-04 15:28:36,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 138 transitions, 1539 flow [2024-06-04 15:28:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-04 15:28:36,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-04 15:28:36,827 INFO L175 Difference]: Start difference. First operand has 142 places, 122 transitions, 1203 flow. Second operand 9 states and 106 transitions. [2024-06-04 15:28:36,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 138 transitions, 1539 flow [2024-06-04 15:28:36,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 1397 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 15:28:36,867 INFO L231 Difference]: Finished difference. Result has 142 places, 124 transitions, 1130 flow [2024-06-04 15:28:36,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=142, PETRI_TRANSITIONS=124} [2024-06-04 15:28:36,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-04 15:28:36,868 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 124 transitions, 1130 flow [2024-06-04 15:28:36,868 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 15:28:36,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:36,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:36,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-04 15:28:36,868 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 15:28:36,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:36,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2118771172, now seen corresponding path program 8 times [2024-06-04 15:28:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:36,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876127221] [2024-06-04 15:28:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:36,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:37,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:37,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876127221] [2024-06-04 15:28:37,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876127221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:37,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:37,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:37,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026481265] [2024-06-04 15:28:37,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:37,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:37,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:37,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:37,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:37,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:37,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 124 transitions, 1130 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 15:28:37,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:37,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:37,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:38,050 INFO L124 PetriNetUnfolderBase]: 402/697 cut-off events. [2024-06-04 15:28:38,050 INFO L125 PetriNetUnfolderBase]: For 33318/33318 co-relation queries the response was YES. [2024-06-04 15:28:38,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4786 conditions, 697 events. 402/697 cut-off events. For 33318/33318 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2921 event pairs, 59 based on Foata normal form. 6/702 useless extension candidates. Maximal degree in co-relation 4713. Up to 628 conditions per place. [2024-06-04 15:28:38,055 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-06-04 15:28:38,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 142 transitions, 1489 flow [2024-06-04 15:28:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-04 15:28:38,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:28:38,056 INFO L175 Difference]: Start difference. First operand has 142 places, 124 transitions, 1130 flow. Second operand 9 states and 108 transitions. [2024-06-04 15:28:38,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 142 transitions, 1489 flow [2024-06-04 15:28:38,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 1440 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:38,097 INFO L231 Difference]: Finished difference. Result has 144 places, 127 transitions, 1162 flow [2024-06-04 15:28:38,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1162, PETRI_PLACES=144, PETRI_TRANSITIONS=127} [2024-06-04 15:28:38,097 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-04 15:28:38,098 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 127 transitions, 1162 flow [2024-06-04 15:28:38,098 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 15:28:38,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:38,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:38,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-04 15:28:38,098 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 15:28:38,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash -237074094, now seen corresponding path program 9 times [2024-06-04 15:28:38,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:38,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234078215] [2024-06-04 15:28:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:38,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:38,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234078215] [2024-06-04 15:28:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234078215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:38,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:38,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:38,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823121225] [2024-06-04 15:28:38,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:38,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:38,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:38,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:38,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:38,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:38,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 127 transitions, 1162 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 15:28:38,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:38,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:38,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:39,155 INFO L124 PetriNetUnfolderBase]: 408/707 cut-off events. [2024-06-04 15:28:39,156 INFO L125 PetriNetUnfolderBase]: For 32145/32145 co-relation queries the response was YES. [2024-06-04 15:28:39,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4909 conditions, 707 events. 408/707 cut-off events. For 32145/32145 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2996 event pairs, 51 based on Foata normal form. 2/708 useless extension candidates. Maximal degree in co-relation 4835. Up to 568 conditions per place. [2024-06-04 15:28:39,160 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 32 changer transitions 0/144 dead transitions. [2024-06-04 15:28:39,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 144 transitions, 1604 flow [2024-06-04 15:28:39,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-04 15:28:39,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-04 15:28:39,161 INFO L175 Difference]: Start difference. First operand has 144 places, 127 transitions, 1162 flow. Second operand 9 states and 110 transitions. [2024-06-04 15:28:39,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 144 transitions, 1604 flow [2024-06-04 15:28:39,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 144 transitions, 1554 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:39,205 INFO L231 Difference]: Finished difference. Result has 146 places, 129 transitions, 1205 flow [2024-06-04 15:28:39,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=146, PETRI_TRANSITIONS=129} [2024-06-04 15:28:39,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-04 15:28:39,206 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 129 transitions, 1205 flow [2024-06-04 15:28:39,206 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 15:28:39,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:39,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:39,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-04 15:28:39,207 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 15:28:39,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:39,207 INFO L85 PathProgramCache]: Analyzing trace with hash 28842232, now seen corresponding path program 1 times [2024-06-04 15:28:39,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:39,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791090517] [2024-06-04 15:28:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:39,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:39,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791090517] [2024-06-04 15:28:39,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791090517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:39,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:39,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:39,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804421903] [2024-06-04 15:28:39,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:39,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:39,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:40,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:40,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 129 transitions, 1205 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 15:28:40,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:40,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:40,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:40,338 INFO L124 PetriNetUnfolderBase]: 406/704 cut-off events. [2024-06-04 15:28:40,338 INFO L125 PetriNetUnfolderBase]: For 32291/32291 co-relation queries the response was YES. [2024-06-04 15:28:40,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4912 conditions, 704 events. 406/704 cut-off events. For 32291/32291 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2984 event pairs, 66 based on Foata normal form. 1/704 useless extension candidates. Maximal degree in co-relation 4837. Up to 674 conditions per place. [2024-06-04 15:28:40,342 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 121 selfloop transitions, 16 changer transitions 0/139 dead transitions. [2024-06-04 15:28:40,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 139 transitions, 1523 flow [2024-06-04 15:28:40,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 15:28:40,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 15:28:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-04 15:28:40,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:28:40,345 INFO L175 Difference]: Start difference. First operand has 146 places, 129 transitions, 1205 flow. Second operand 8 states and 90 transitions. [2024-06-04 15:28:40,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 139 transitions, 1523 flow [2024-06-04 15:28:40,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 139 transitions, 1464 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:40,386 INFO L231 Difference]: Finished difference. Result has 148 places, 131 transitions, 1214 flow [2024-06-04 15:28:40,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1214, PETRI_PLACES=148, PETRI_TRANSITIONS=131} [2024-06-04 15:28:40,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-04 15:28:40,386 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 131 transitions, 1214 flow [2024-06-04 15:28:40,386 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 15:28:40,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:40,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:40,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-04 15:28:40,387 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 15:28:40,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash 19628443, now seen corresponding path program 5 times [2024-06-04 15:28:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:40,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212413899] [2024-06-04 15:28:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:40,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:41,315 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 15:28:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:41,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212413899] [2024-06-04 15:28:41,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212413899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:41,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:41,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:41,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772243724] [2024-06-04 15:28:41,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:41,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:41,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:41,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:41,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:41,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:41,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 131 transitions, 1214 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 15:28:41,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:41,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:41,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:41,721 INFO L124 PetriNetUnfolderBase]: 412/714 cut-off events. [2024-06-04 15:28:41,721 INFO L125 PetriNetUnfolderBase]: For 34655/34655 co-relation queries the response was YES. [2024-06-04 15:28:41,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4965 conditions, 714 events. 412/714 cut-off events. For 34655/34655 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3033 event pairs, 65 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4889. Up to 673 conditions per place. [2024-06-04 15:28:41,725 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 16 changer transitions 0/145 dead transitions. [2024-06-04 15:28:41,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 145 transitions, 1560 flow [2024-06-04 15:28:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:41,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 15:28:41,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:28:41,726 INFO L175 Difference]: Start difference. First operand has 148 places, 131 transitions, 1214 flow. Second operand 9 states and 102 transitions. [2024-06-04 15:28:41,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 145 transitions, 1560 flow [2024-06-04 15:28:41,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 1518 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:41,772 INFO L231 Difference]: Finished difference. Result has 151 places, 133 transitions, 1239 flow [2024-06-04 15:28:41,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1239, PETRI_PLACES=151, PETRI_TRANSITIONS=133} [2024-06-04 15:28:41,773 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-04 15:28:41,773 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 1239 flow [2024-06-04 15:28:41,773 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 15:28:41,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:41,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:41,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-04 15:28:41,773 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 15:28:41,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:41,774 INFO L85 PathProgramCache]: Analyzing trace with hash -237073877, now seen corresponding path program 6 times [2024-06-04 15:28:41,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:41,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152950892] [2024-06-04 15:28:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:41,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:42,733 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 15:28:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:42,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152950892] [2024-06-04 15:28:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152950892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:42,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:42,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:42,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516175516] [2024-06-04 15:28:42,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:42,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:42,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:42,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:42,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 133 transitions, 1239 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 15:28:42,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:42,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:42,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:43,108 INFO L124 PetriNetUnfolderBase]: 408/708 cut-off events. [2024-06-04 15:28:43,108 INFO L125 PetriNetUnfolderBase]: For 34531/34531 co-relation queries the response was YES. [2024-06-04 15:28:43,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4899 conditions, 708 events. 408/708 cut-off events. For 34531/34531 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3015 event pairs, 57 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 4822. Up to 626 conditions per place. [2024-06-04 15:28:43,112 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-06-04 15:28:43,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 145 transitions, 1559 flow [2024-06-04 15:28:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-04 15:28:43,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:28:43,113 INFO L175 Difference]: Start difference. First operand has 151 places, 133 transitions, 1239 flow. Second operand 9 states and 105 transitions. [2024-06-04 15:28:43,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 145 transitions, 1559 flow [2024-06-04 15:28:43,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 145 transitions, 1508 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:43,162 INFO L231 Difference]: Finished difference. Result has 153 places, 133 transitions, 1247 flow [2024-06-04 15:28:43,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1247, PETRI_PLACES=153, PETRI_TRANSITIONS=133} [2024-06-04 15:28:43,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-04 15:28:43,163 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 133 transitions, 1247 flow [2024-06-04 15:28:43,163 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 15:28:43,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:43,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:43,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-04 15:28:43,164 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 15:28:43,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash 28832653, now seen corresponding path program 7 times [2024-06-04 15:28:43,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:43,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465652394] [2024-06-04 15:28:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:43,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:44,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:44,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465652394] [2024-06-04 15:28:44,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465652394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:44,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:44,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418884667] [2024-06-04 15:28:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:44,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:44,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:44,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:44,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 133 transitions, 1247 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 15:28:44,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:44,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:44,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:44,453 INFO L124 PetriNetUnfolderBase]: 404/702 cut-off events. [2024-06-04 15:28:44,453 INFO L125 PetriNetUnfolderBase]: For 34189/34189 co-relation queries the response was YES. [2024-06-04 15:28:44,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 702 events. 404/702 cut-off events. For 34189/34189 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2978 event pairs, 65 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 4760. Up to 662 conditions per place. [2024-06-04 15:28:44,456 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 18 changer transitions 0/145 dead transitions. [2024-06-04 15:28:44,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 145 transitions, 1581 flow [2024-06-04 15:28:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:44,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-04 15:28:44,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-04 15:28:44,457 INFO L175 Difference]: Start difference. First operand has 153 places, 133 transitions, 1247 flow. Second operand 9 states and 100 transitions. [2024-06-04 15:28:44,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 145 transitions, 1581 flow [2024-06-04 15:28:44,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 1443 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:44,510 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 1177 flow [2024-06-04 15:28:44,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1177, PETRI_PLACES=152, PETRI_TRANSITIONS=135} [2024-06-04 15:28:44,511 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-04 15:28:44,511 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 1177 flow [2024-06-04 15:28:44,511 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 15:28:44,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:44,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:28:44,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-04 15:28:44,512 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 15:28:44,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash 938445506, now seen corresponding path program 10 times [2024-06-04 15:28:44,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:44,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201879149] [2024-06-04 15:28:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:44,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:45,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:45,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201879149] [2024-06-04 15:28:45,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201879149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:45,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:45,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:28:45,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982395132] [2024-06-04 15:28:45,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:45,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:28:45,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:28:45,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:28:45,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:45,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 135 transitions, 1177 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 15:28:45,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:45,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:45,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:45,718 INFO L124 PetriNetUnfolderBase]: 398/693 cut-off events. [2024-06-04 15:28:45,718 INFO L125 PetriNetUnfolderBase]: For 33596/33596 co-relation queries the response was YES. [2024-06-04 15:28:45,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 693 events. 398/693 cut-off events. For 33596/33596 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2934 event pairs, 55 based on Foata normal form. 3/695 useless extension candidates. Maximal degree in co-relation 4447. Up to 647 conditions per place. [2024-06-04 15:28:45,723 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 17 changer transitions 0/150 dead transitions. [2024-06-04 15:28:45,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 150 transitions, 1539 flow [2024-06-04 15:28:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:45,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 15:28:45,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 15:28:45,724 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 1177 flow. Second operand 9 states and 103 transitions. [2024-06-04 15:28:45,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 150 transitions, 1539 flow [2024-06-04 15:28:45,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 150 transitions, 1489 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:45,768 INFO L231 Difference]: Finished difference. Result has 154 places, 138 transitions, 1205 flow [2024-06-04 15:28:45,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=154, PETRI_TRANSITIONS=138} [2024-06-04 15:28:45,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-04 15:28:45,769 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 138 transitions, 1205 flow [2024-06-04 15:28:45,769 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 15:28:45,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:45,769 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 15:28:45,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-04 15:28:45,770 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 15:28:45,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:45,770 INFO L85 PathProgramCache]: Analyzing trace with hash -767822428, now seen corresponding path program 1 times [2024-06-04 15:28:45,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:45,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008465064] [2024-06-04 15:28:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:47,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:47,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008465064] [2024-06-04 15:28:47,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008465064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:47,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:47,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:47,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414387081] [2024-06-04 15:28:47,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:47,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:47,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:47,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:47,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:47,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 138 transitions, 1205 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 15:28:47,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:47,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:47,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:47,577 INFO L124 PetriNetUnfolderBase]: 409/714 cut-off events. [2024-06-04 15:28:47,577 INFO L125 PetriNetUnfolderBase]: For 36181/36181 co-relation queries the response was YES. [2024-06-04 15:28:47,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4774 conditions, 714 events. 409/714 cut-off events. For 36181/36181 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3054 event pairs, 43 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4696. Up to 626 conditions per place. [2024-06-04 15:28:47,581 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-04 15:28:47,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 165 transitions, 1713 flow [2024-06-04 15:28:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:28:47,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:28:47,582 INFO L175 Difference]: Start difference. First operand has 154 places, 138 transitions, 1205 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:28:47,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 165 transitions, 1713 flow [2024-06-04 15:28:47,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 165 transitions, 1665 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:47,633 INFO L231 Difference]: Finished difference. Result has 158 places, 140 transitions, 1225 flow [2024-06-04 15:28:47,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1225, PETRI_PLACES=158, PETRI_TRANSITIONS=140} [2024-06-04 15:28:47,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-04 15:28:47,633 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 140 transitions, 1225 flow [2024-06-04 15:28:47,633 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 15:28:47,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:47,634 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 15:28:47,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-04 15:28:47,634 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 15:28:47,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash -654258268, now seen corresponding path program 2 times [2024-06-04 15:28:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323327409] [2024-06-04 15:28:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:48,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323327409] [2024-06-04 15:28:48,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323327409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:48,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:48,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:48,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111163513] [2024-06-04 15:28:48,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:48,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:48,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:48,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:48,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:49,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:49,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 140 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 15:28:49,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:49,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:49,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:49,511 INFO L124 PetriNetUnfolderBase]: 416/727 cut-off events. [2024-06-04 15:28:49,512 INFO L125 PetriNetUnfolderBase]: For 37875/37875 co-relation queries the response was YES. [2024-06-04 15:28:49,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4874 conditions, 727 events. 416/727 cut-off events. For 37875/37875 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3144 event pairs, 60 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4795. Up to 667 conditions per place. [2024-06-04 15:28:49,517 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2024-06-04 15:28:49,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 166 transitions, 1650 flow [2024-06-04 15:28:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:28:49,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:28:49,518 INFO L175 Difference]: Start difference. First operand has 158 places, 140 transitions, 1225 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:28:49,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 166 transitions, 1650 flow [2024-06-04 15:28:49,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 166 transitions, 1602 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-04 15:28:49,577 INFO L231 Difference]: Finished difference. Result has 162 places, 143 transitions, 1256 flow [2024-06-04 15:28:49,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1256, PETRI_PLACES=162, PETRI_TRANSITIONS=143} [2024-06-04 15:28:49,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-04 15:28:49,578 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 143 transitions, 1256 flow [2024-06-04 15:28:49,578 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 15:28:49,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:49,578 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 15:28:49,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-04 15:28:49,578 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 15:28:49,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:49,579 INFO L85 PathProgramCache]: Analyzing trace with hash -654258144, now seen corresponding path program 1 times [2024-06-04 15:28:49,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:49,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057195963] [2024-06-04 15:28:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:49,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057195963] [2024-06-04 15:28:50,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057195963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:50,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:50,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939906413] [2024-06-04 15:28:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:50,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:50,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:50,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:50,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 143 transitions, 1256 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 15:28:50,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:50,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:50,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:51,335 INFO L124 PetriNetUnfolderBase]: 419/732 cut-off events. [2024-06-04 15:28:51,335 INFO L125 PetriNetUnfolderBase]: For 38437/38437 co-relation queries the response was YES. [2024-06-04 15:28:51,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 732 events. 419/732 cut-off events. For 38437/38437 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3171 event pairs, 59 based on Foata normal form. 1/732 useless extension candidates. Maximal degree in co-relation 4836. Up to 666 conditions per place. [2024-06-04 15:28:51,339 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 23 changer transitions 0/168 dead transitions. [2024-06-04 15:28:51,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 168 transitions, 1764 flow [2024-06-04 15:28:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:28:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:28:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-04 15:28:51,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-04 15:28:51,340 INFO L175 Difference]: Start difference. First operand has 162 places, 143 transitions, 1256 flow. Second operand 11 states and 131 transitions. [2024-06-04 15:28:51,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 168 transitions, 1764 flow [2024-06-04 15:28:51,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 168 transitions, 1724 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:51,398 INFO L231 Difference]: Finished difference. Result has 165 places, 145 transitions, 1285 flow [2024-06-04 15:28:51,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1285, PETRI_PLACES=165, PETRI_TRANSITIONS=145} [2024-06-04 15:28:51,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-04 15:28:51,398 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 145 transitions, 1285 flow [2024-06-04 15:28:51,399 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 15:28:51,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:51,399 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 15:28:51,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-04 15:28:51,399 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 15:28:51,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:51,399 INFO L85 PathProgramCache]: Analyzing trace with hash -654138174, now seen corresponding path program 2 times [2024-06-04 15:28:51,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:51,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498041414] [2024-06-04 15:28:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:51,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:52,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:52,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498041414] [2024-06-04 15:28:52,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498041414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:52,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:52,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:52,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108472980] [2024-06-04 15:28:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:52,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:52,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:52,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 145 transitions, 1285 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 15:28:52,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:52,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:52,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:53,107 INFO L124 PetriNetUnfolderBase]: 417/729 cut-off events. [2024-06-04 15:28:53,108 INFO L125 PetriNetUnfolderBase]: For 38836/38836 co-relation queries the response was YES. [2024-06-04 15:28:53,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 729 events. 417/729 cut-off events. For 38836/38836 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3164 event pairs, 59 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 4813. Up to 664 conditions per place. [2024-06-04 15:28:53,112 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2024-06-04 15:28:53,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 162 transitions, 1653 flow [2024-06-04 15:28:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:28:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:28:53,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-04 15:28:53,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-04 15:28:53,114 INFO L175 Difference]: Start difference. First operand has 165 places, 145 transitions, 1285 flow. Second operand 9 states and 109 transitions. [2024-06-04 15:28:53,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 162 transitions, 1653 flow [2024-06-04 15:28:53,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 162 transitions, 1602 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:28:53,165 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1288 flow [2024-06-04 15:28:53,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1288, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-04 15:28:53,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-04 15:28:53,166 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1288 flow [2024-06-04 15:28:53,166 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 15:28:53,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:53,166 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 15:28:53,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-04 15:28:53,166 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 15:28:53,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:53,166 INFO L85 PathProgramCache]: Analyzing trace with hash -654142948, now seen corresponding path program 3 times [2024-06-04 15:28:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:53,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097059934] [2024-06-04 15:28:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:53,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:54,684 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 15:28:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:54,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097059934] [2024-06-04 15:28:54,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097059934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:54,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:54,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:54,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632716892] [2024-06-04 15:28:54,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:54,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:54,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:54,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:54,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:54,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1288 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 15:28:54,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:54,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:54,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:55,170 INFO L124 PetriNetUnfolderBase]: 414/724 cut-off events. [2024-06-04 15:28:55,170 INFO L125 PetriNetUnfolderBase]: For 39244/39244 co-relation queries the response was YES. [2024-06-04 15:28:55,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4811 conditions, 724 events. 414/724 cut-off events. For 39244/39244 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3134 event pairs, 58 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 4729. Up to 676 conditions per place. [2024-06-04 15:28:55,175 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 16 changer transitions 0/164 dead transitions. [2024-06-04 15:28:55,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 164 transitions, 1664 flow [2024-06-04 15:28:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:55,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-04 15:28:55,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:28:55,176 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1288 flow. Second operand 10 states and 115 transitions. [2024-06-04 15:28:55,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 164 transitions, 1664 flow [2024-06-04 15:28:55,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 164 transitions, 1592 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:55,242 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1252 flow [2024-06-04 15:28:55,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1252, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-04 15:28:55,242 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-04 15:28:55,242 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1252 flow [2024-06-04 15:28:55,243 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 15:28:55,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:55,243 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 15:28:55,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-04 15:28:55,243 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 15:28:55,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash -764960508, now seen corresponding path program 1 times [2024-06-04 15:28:55,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:55,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474004005] [2024-06-04 15:28:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:55,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:56,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:56,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474004005] [2024-06-04 15:28:56,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474004005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:56,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:56,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777906481] [2024-06-04 15:28:56,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:56,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:56,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:56,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:56,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:56,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:56,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1252 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 15:28:56,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:56,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:56,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:56,879 INFO L124 PetriNetUnfolderBase]: 436/760 cut-off events. [2024-06-04 15:28:56,880 INFO L125 PetriNetUnfolderBase]: For 44157/44157 co-relation queries the response was YES. [2024-06-04 15:28:56,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5070 conditions, 760 events. 436/760 cut-off events. For 44157/44157 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3319 event pairs, 62 based on Foata normal form. 4/763 useless extension candidates. Maximal degree in co-relation 4988. Up to 670 conditions per place. [2024-06-04 15:28:56,884 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 27 changer transitions 0/171 dead transitions. [2024-06-04 15:28:56,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 171 transitions, 1814 flow [2024-06-04 15:28:56,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:28:56,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:28:56,886 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1252 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:28:56,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 171 transitions, 1814 flow [2024-06-04 15:28:56,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 171 transitions, 1766 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 15:28:56,944 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 1338 flow [2024-06-04 15:28:56,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1338, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2024-06-04 15:28:56,944 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-04 15:28:56,944 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 1338 flow [2024-06-04 15:28:56,945 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 15:28:56,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:56,945 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 15:28:56,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-04 15:28:56,945 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 15:28:56,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:56,945 INFO L85 PathProgramCache]: Analyzing trace with hash -649669338, now seen corresponding path program 2 times [2024-06-04 15:28:56,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:56,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242427080] [2024-06-04 15:28:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:56,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:28:57,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242427080] [2024-06-04 15:28:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242427080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265057790] [2024-06-04 15:28:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:57,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:57,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:57,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 1338 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 15:28:57,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:57,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:57,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:28:58,363 INFO L124 PetriNetUnfolderBase]: 498/860 cut-off events. [2024-06-04 15:28:58,363 INFO L125 PetriNetUnfolderBase]: For 58624/58624 co-relation queries the response was YES. [2024-06-04 15:28:58,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6260 conditions, 860 events. 498/860 cut-off events. For 58624/58624 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3879 event pairs, 47 based on Foata normal form. 4/863 useless extension candidates. Maximal degree in co-relation 6177. Up to 392 conditions per place. [2024-06-04 15:28:58,369 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 118 selfloop transitions, 67 changer transitions 0/187 dead transitions. [2024-06-04 15:28:58,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 187 transitions, 2356 flow [2024-06-04 15:28:58,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:28:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:28:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-04 15:28:58,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-04 15:28:58,370 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 1338 flow. Second operand 10 states and 142 transitions. [2024-06-04 15:28:58,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 187 transitions, 2356 flow [2024-06-04 15:28:58,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 187 transitions, 2290 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-04 15:28:58,445 INFO L231 Difference]: Finished difference. Result has 170 places, 159 transitions, 1558 flow [2024-06-04 15:28:58,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1558, PETRI_PLACES=170, PETRI_TRANSITIONS=159} [2024-06-04 15:28:58,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-04 15:28:58,445 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 159 transitions, 1558 flow [2024-06-04 15:28:58,445 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 15:28:58,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:28:58,446 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 15:28:58,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-04 15:28:58,446 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 15:28:58,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:28:58,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1742217052, now seen corresponding path program 4 times [2024-06-04 15:28:58,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:28:58,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504232061] [2024-06-04 15:28:58,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:28:58,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:28:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:28:59,646 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 15:28:59,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:28:59,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504232061] [2024-06-04 15:28:59,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504232061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:28:59,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:28:59,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:28:59,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151907430] [2024-06-04 15:28:59,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:28:59,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:28:59,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:28:59,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:28:59,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:28:59,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:28:59,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 159 transitions, 1558 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 15:28:59,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:28:59,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:28:59,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:00,016 INFO L124 PetriNetUnfolderBase]: 502/868 cut-off events. [2024-06-04 15:29:00,016 INFO L125 PetriNetUnfolderBase]: For 59050/59050 co-relation queries the response was YES. [2024-06-04 15:29:00,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6534 conditions, 868 events. 502/868 cut-off events. For 59050/59050 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3913 event pairs, 73 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 6449. Up to 793 conditions per place. [2024-06-04 15:29:00,022 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 149 selfloop transitions, 29 changer transitions 0/180 dead transitions. [2024-06-04 15:29:00,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 180 transitions, 2018 flow [2024-06-04 15:29:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 15:29:00,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 15:29:00,025 INFO L175 Difference]: Start difference. First operand has 170 places, 159 transitions, 1558 flow. Second operand 10 states and 117 transitions. [2024-06-04 15:29:00,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 180 transitions, 2018 flow [2024-06-04 15:29:00,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 180 transitions, 1910 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-04 15:29:00,105 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 1592 flow [2024-06-04 15:29:00,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1592, PETRI_PLACES=177, PETRI_TRANSITIONS=164} [2024-06-04 15:29:00,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-04 15:29:00,106 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 1592 flow [2024-06-04 15:29:00,106 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 15:29:00,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:00,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:00,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-04 15:29:00,106 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 15:29:00,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:00,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1981196392, now seen corresponding path program 3 times [2024-06-04 15:29:00,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:00,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578445105] [2024-06-04 15:29:00,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:00,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:01,095 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 15:29:01,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:01,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578445105] [2024-06-04 15:29:01,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578445105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:01,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:01,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:01,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657886057] [2024-06-04 15:29:01,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:01,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:01,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:01,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:01,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:01,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:01,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 164 transitions, 1592 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 15:29:01,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:01,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:01,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:01,600 INFO L124 PetriNetUnfolderBase]: 518/894 cut-off events. [2024-06-04 15:29:01,600 INFO L125 PetriNetUnfolderBase]: For 63978/63978 co-relation queries the response was YES. [2024-06-04 15:29:01,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6761 conditions, 894 events. 518/894 cut-off events. For 63978/63978 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4071 event pairs, 38 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 6673. Up to 411 conditions per place. [2024-06-04 15:29:01,606 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 111 selfloop transitions, 81 changer transitions 0/194 dead transitions. [2024-06-04 15:29:01,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 194 transitions, 2454 flow [2024-06-04 15:29:01,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-04 15:29:01,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-04 15:29:01,607 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 1592 flow. Second operand 10 states and 137 transitions. [2024-06-04 15:29:01,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 194 transitions, 2454 flow [2024-06-04 15:29:01,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 194 transitions, 2399 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-04 15:29:01,686 INFO L231 Difference]: Finished difference. Result has 183 places, 169 transitions, 1793 flow [2024-06-04 15:29:01,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1793, PETRI_PLACES=183, PETRI_TRANSITIONS=169} [2024-06-04 15:29:01,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-04 15:29:01,687 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 169 transitions, 1793 flow [2024-06-04 15:29:01,687 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 15:29:01,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:01,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:01,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-04 15:29:01,687 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 15:29:01,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:01,688 INFO L85 PathProgramCache]: Analyzing trace with hash -649496358, now seen corresponding path program 4 times [2024-06-04 15:29:01,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:01,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629512452] [2024-06-04 15:29:01,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:01,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:02,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:02,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629512452] [2024-06-04 15:29:02,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629512452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:02,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:02,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:02,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141981343] [2024-06-04 15:29:02,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:02,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:02,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:02,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:02,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:02,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:02,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 169 transitions, 1793 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 15:29:02,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:02,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:02,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:03,230 INFO L124 PetriNetUnfolderBase]: 510/882 cut-off events. [2024-06-04 15:29:03,231 INFO L125 PetriNetUnfolderBase]: For 64240/64240 co-relation queries the response was YES. [2024-06-04 15:29:03,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6841 conditions, 882 events. 510/882 cut-off events. For 64240/64240 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4017 event pairs, 42 based on Foata normal form. 4/885 useless extension candidates. Maximal degree in co-relation 6750. Up to 407 conditions per place. [2024-06-04 15:29:03,236 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 74 changer transitions 0/195 dead transitions. [2024-06-04 15:29:03,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 195 transitions, 2623 flow [2024-06-04 15:29:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-04 15:29:03,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-04 15:29:03,238 INFO L175 Difference]: Start difference. First operand has 183 places, 169 transitions, 1793 flow. Second operand 10 states and 138 transitions. [2024-06-04 15:29:03,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 195 transitions, 2623 flow [2024-06-04 15:29:03,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 195 transitions, 2457 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:03,355 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 1781 flow [2024-06-04 15:29:03,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1781, PETRI_PLACES=187, PETRI_TRANSITIONS=169} [2024-06-04 15:29:03,356 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-04 15:29:03,356 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 1781 flow [2024-06-04 15:29:03,356 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 15:29:03,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:03,356 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 15:29:03,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-04 15:29:03,356 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 15:29:03,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash -484035164, now seen corresponding path program 5 times [2024-06-04 15:29:03,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:03,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890893555] [2024-06-04 15:29:03,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:03,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:04,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:04,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890893555] [2024-06-04 15:29:04,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890893555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:04,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:04,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:04,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070923972] [2024-06-04 15:29:04,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:04,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:04,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:04,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:04,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:04,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 169 transitions, 1781 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 15:29:04,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:04,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:04,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:04,764 INFO L124 PetriNetUnfolderBase]: 514/890 cut-off events. [2024-06-04 15:29:04,764 INFO L125 PetriNetUnfolderBase]: For 63832/63832 co-relation queries the response was YES. [2024-06-04 15:29:04,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6870 conditions, 890 events. 514/890 cut-off events. For 63832/63832 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4060 event pairs, 66 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 6778. Up to 848 conditions per place. [2024-06-04 15:29:04,771 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 162 selfloop transitions, 18 changer transitions 0/182 dead transitions. [2024-06-04 15:29:04,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 182 transitions, 2187 flow [2024-06-04 15:29:04,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:04,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-04 15:29:04,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-04 15:29:04,772 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 1781 flow. Second operand 9 states and 103 transitions. [2024-06-04 15:29:04,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 182 transitions, 2187 flow [2024-06-04 15:29:04,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 182 transitions, 2018 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:04,895 INFO L231 Difference]: Finished difference. Result has 187 places, 170 transitions, 1670 flow [2024-06-04 15:29:04,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1670, PETRI_PLACES=187, PETRI_TRANSITIONS=170} [2024-06-04 15:29:04,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-04 15:29:04,896 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 170 transitions, 1670 flow [2024-06-04 15:29:04,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 15:29:04,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:04,896 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 15:29:04,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-04 15:29:04,896 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 15:29:04,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:04,897 INFO L85 PathProgramCache]: Analyzing trace with hash -484030204, now seen corresponding path program 5 times [2024-06-04 15:29:04,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:04,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262240014] [2024-06-04 15:29:04,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:04,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262240014] [2024-06-04 15:29:05,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262240014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:05,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:05,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:05,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766660097] [2024-06-04 15:29:05,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:05,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:05,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:05,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:05,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 170 transitions, 1670 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 15:29:05,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:05,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:05,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:06,422 INFO L124 PetriNetUnfolderBase]: 556/958 cut-off events. [2024-06-04 15:29:06,422 INFO L125 PetriNetUnfolderBase]: For 77653/77653 co-relation queries the response was YES. [2024-06-04 15:29:06,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 958 events. 556/958 cut-off events. For 77653/77653 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4439 event pairs, 56 based on Foata normal form. 4/961 useless extension candidates. Maximal degree in co-relation 7404. Up to 769 conditions per place. [2024-06-04 15:29:06,429 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 41 changer transitions 0/199 dead transitions. [2024-06-04 15:29:06,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 199 transitions, 2488 flow [2024-06-04 15:29:06,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:29:06,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 15:29:06,430 INFO L175 Difference]: Start difference. First operand has 187 places, 170 transitions, 1670 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:29:06,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 199 transitions, 2488 flow [2024-06-04 15:29:06,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 199 transitions, 2440 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:06,525 INFO L231 Difference]: Finished difference. Result has 190 places, 177 transitions, 1839 flow [2024-06-04 15:29:06,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1839, PETRI_PLACES=190, PETRI_TRANSITIONS=177} [2024-06-04 15:29:06,525 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-04 15:29:06,525 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 177 transitions, 1839 flow [2024-06-04 15:29:06,525 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 15:29:06,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:06,526 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 15:29:06,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-04 15:29:06,526 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 15:29:06,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash -477355036, now seen corresponding path program 1 times [2024-06-04 15:29:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:06,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589781302] [2024-06-04 15:29:06,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:06,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589781302] [2024-06-04 15:29:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589781302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:07,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:07,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:07,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072122402] [2024-06-04 15:29:07,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:07,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:07,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:07,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:07,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 177 transitions, 1839 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 15:29:07,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:07,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:07,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:08,291 INFO L124 PetriNetUnfolderBase]: 560/966 cut-off events. [2024-06-04 15:29:08,291 INFO L125 PetriNetUnfolderBase]: For 76988/76988 co-relation queries the response was YES. [2024-06-04 15:29:08,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7707 conditions, 966 events. 560/966 cut-off events. For 76988/76988 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4498 event pairs, 64 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 7613. Up to 903 conditions per place. [2024-06-04 15:29:08,298 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 171 selfloop transitions, 21 changer transitions 0/194 dead transitions. [2024-06-04 15:29:08,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 194 transitions, 2291 flow [2024-06-04 15:29:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:08,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-04 15:29:08,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-04 15:29:08,299 INFO L175 Difference]: Start difference. First operand has 190 places, 177 transitions, 1839 flow. Second operand 9 states and 107 transitions. [2024-06-04 15:29:08,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 194 transitions, 2291 flow [2024-06-04 15:29:08,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 194 transitions, 2194 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-04 15:29:08,410 INFO L231 Difference]: Finished difference. Result has 195 places, 180 transitions, 1825 flow [2024-06-04 15:29:08,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1825, PETRI_PLACES=195, PETRI_TRANSITIONS=180} [2024-06-04 15:29:08,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-04 15:29:08,411 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 180 transitions, 1825 flow [2024-06-04 15:29:08,411 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 15:29:08,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:08,412 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 15:29:08,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-04 15:29:08,412 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 15:29:08,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:08,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1815557258, now seen corresponding path program 6 times [2024-06-04 15:29:08,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:08,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967610441] [2024-06-04 15:29:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:08,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:09,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:09,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967610441] [2024-06-04 15:29:09,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967610441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:09,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:09,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322081877] [2024-06-04 15:29:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:09,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:09,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:09,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:09,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:09,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:09,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 180 transitions, 1825 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 15:29:09,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:09,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:09,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:10,072 INFO L124 PetriNetUnfolderBase]: 601/1032 cut-off events. [2024-06-04 15:29:10,072 INFO L125 PetriNetUnfolderBase]: For 91588/91588 co-relation queries the response was YES. [2024-06-04 15:29:10,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8503 conditions, 1032 events. 601/1032 cut-off events. For 91588/91588 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4903 event pairs, 58 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 8406. Up to 803 conditions per place. [2024-06-04 15:29:10,082 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 50 changer transitions 0/211 dead transitions. [2024-06-04 15:29:10,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 211 transitions, 2813 flow [2024-06-04 15:29:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:10,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-04 15:29:10,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-04 15:29:10,083 INFO L175 Difference]: Start difference. First operand has 195 places, 180 transitions, 1825 flow. Second operand 10 states and 134 transitions. [2024-06-04 15:29:10,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 211 transitions, 2813 flow [2024-06-04 15:29:10,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 2763 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:10,215 INFO L231 Difference]: Finished difference. Result has 201 places, 189 transitions, 2062 flow [2024-06-04 15:29:10,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2062, PETRI_PLACES=201, PETRI_TRANSITIONS=189} [2024-06-04 15:29:10,215 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-04 15:29:10,216 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 189 transitions, 2062 flow [2024-06-04 15:29:10,216 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 15:29:10,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:10,216 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 15:29:10,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-04 15:29:10,216 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 15:29:10,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -477601300, now seen corresponding path program 3 times [2024-06-04 15:29:10,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:10,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005526115] [2024-06-04 15:29:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:10,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:11,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:11,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005526115] [2024-06-04 15:29:11,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005526115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:11,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:11,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99790144] [2024-06-04 15:29:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:11,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:11,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:11,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:11,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:11,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:11,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 189 transitions, 2062 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 15:29:11,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:11,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:11,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:11,765 INFO L124 PetriNetUnfolderBase]: 595/1023 cut-off events. [2024-06-04 15:29:11,765 INFO L125 PetriNetUnfolderBase]: For 91551/91551 co-relation queries the response was YES. [2024-06-04 15:29:11,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8571 conditions, 1023 events. 595/1023 cut-off events. For 91551/91551 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4849 event pairs, 72 based on Foata normal form. 3/1025 useless extension candidates. Maximal degree in co-relation 8471. Up to 933 conditions per place. [2024-06-04 15:29:11,774 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 28 changer transitions 0/206 dead transitions. [2024-06-04 15:29:11,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 206 transitions, 2520 flow [2024-06-04 15:29:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:29:11,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:29:11,775 INFO L175 Difference]: Start difference. First operand has 201 places, 189 transitions, 2062 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:29:11,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 206 transitions, 2520 flow [2024-06-04 15:29:11,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 206 transitions, 2419 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-04 15:29:11,919 INFO L231 Difference]: Finished difference. Result has 206 places, 189 transitions, 2023 flow [2024-06-04 15:29:11,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2023, PETRI_PLACES=206, PETRI_TRANSITIONS=189} [2024-06-04 15:29:11,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 15:29:11,919 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 189 transitions, 2023 flow [2024-06-04 15:29:11,920 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 15:29:11,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:11,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:11,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-04 15:29:11,920 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 15:29:11,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash -477601114, now seen corresponding path program 7 times [2024-06-04 15:29:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:11,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918108962] [2024-06-04 15:29:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:11,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:13,113 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 15:29:13,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:13,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918108962] [2024-06-04 15:29:13,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918108962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:13,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:13,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:13,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336393252] [2024-06-04 15:29:13,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:13,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:13,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:13,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:13,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:13,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:13,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 189 transitions, 2023 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 15:29:13,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:13,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:13,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:13,653 INFO L124 PetriNetUnfolderBase]: 607/1043 cut-off events. [2024-06-04 15:29:13,653 INFO L125 PetriNetUnfolderBase]: For 96136/96136 co-relation queries the response was YES. [2024-06-04 15:29:13,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 1043 events. 607/1043 cut-off events. For 96136/96136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4973 event pairs, 68 based on Foata normal form. 4/1046 useless extension candidates. Maximal degree in co-relation 8539. Up to 907 conditions per place. [2024-06-04 15:29:13,662 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 33 changer transitions 0/211 dead transitions. [2024-06-04 15:29:13,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 211 transitions, 2695 flow [2024-06-04 15:29:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:13,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-04 15:29:13,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:29:13,663 INFO L175 Difference]: Start difference. First operand has 206 places, 189 transitions, 2023 flow. Second operand 10 states and 125 transitions. [2024-06-04 15:29:13,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 211 transitions, 2695 flow [2024-06-04 15:29:13,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 211 transitions, 2595 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:13,798 INFO L231 Difference]: Finished difference. Result has 206 places, 192 transitions, 2056 flow [2024-06-04 15:29:13,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2056, PETRI_PLACES=206, PETRI_TRANSITIONS=192} [2024-06-04 15:29:13,798 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-04 15:29:13,798 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 192 transitions, 2056 flow [2024-06-04 15:29:13,798 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 15:29:13,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:13,799 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 15:29:13,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-04 15:29:13,799 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 15:29:13,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:13,799 INFO L85 PathProgramCache]: Analyzing trace with hash -483857224, now seen corresponding path program 8 times [2024-06-04 15:29:13,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:13,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753236016] [2024-06-04 15:29:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:13,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:14,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:14,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753236016] [2024-06-04 15:29:14,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753236016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:14,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:14,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:14,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826412938] [2024-06-04 15:29:14,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:14,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:14,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:14,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:14,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:14,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:14,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 192 transitions, 2056 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 15:29:14,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:14,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:14,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:15,382 INFO L124 PetriNetUnfolderBase]: 601/1035 cut-off events. [2024-06-04 15:29:15,382 INFO L125 PetriNetUnfolderBase]: For 92223/92223 co-relation queries the response was YES. [2024-06-04 15:29:15,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8401 conditions, 1035 events. 601/1035 cut-off events. For 92223/92223 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4941 event pairs, 64 based on Foata normal form. 4/1038 useless extension candidates. Maximal degree in co-relation 8301. Up to 806 conditions per place. [2024-06-04 15:29:15,391 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 164 selfloop transitions, 48 changer transitions 0/214 dead transitions. [2024-06-04 15:29:15,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 214 transitions, 2928 flow [2024-06-04 15:29:15,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-04 15:29:15,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-04 15:29:15,392 INFO L175 Difference]: Start difference. First operand has 206 places, 192 transitions, 2056 flow. Second operand 10 states and 135 transitions. [2024-06-04 15:29:15,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 214 transitions, 2928 flow [2024-06-04 15:29:15,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 214 transitions, 2795 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:15,538 INFO L231 Difference]: Finished difference. Result has 208 places, 192 transitions, 2026 flow [2024-06-04 15:29:15,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2026, PETRI_PLACES=208, PETRI_TRANSITIONS=192} [2024-06-04 15:29:15,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-04 15:29:15,539 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 192 transitions, 2026 flow [2024-06-04 15:29:15,539 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 15:29:15,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:15,539 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 15:29:15,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-04 15:29:15,539 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 15:29:15,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:15,539 INFO L85 PathProgramCache]: Analyzing trace with hash -477594604, now seen corresponding path program 9 times [2024-06-04 15:29:15,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:15,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721892370] [2024-06-04 15:29:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:15,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:16,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721892370] [2024-06-04 15:29:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721892370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:16,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:16,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:16,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814667793] [2024-06-04 15:29:16,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:16,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:16,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:16,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:16,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:16,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:16,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 192 transitions, 2026 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 15:29:16,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:16,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:16,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:16,970 INFO L124 PetriNetUnfolderBase]: 597/1029 cut-off events. [2024-06-04 15:29:16,970 INFO L125 PetriNetUnfolderBase]: For 88651/88651 co-relation queries the response was YES. [2024-06-04 15:29:16,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8211 conditions, 1029 events. 597/1029 cut-off events. For 88651/88651 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4909 event pairs, 62 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 8110. Up to 930 conditions per place. [2024-06-04 15:29:16,978 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 180 selfloop transitions, 30 changer transitions 0/212 dead transitions. [2024-06-04 15:29:16,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 212 transitions, 2553 flow [2024-06-04 15:29:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:29:16,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:29:16,979 INFO L175 Difference]: Start difference. First operand has 208 places, 192 transitions, 2026 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:29:16,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 212 transitions, 2553 flow [2024-06-04 15:29:17,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 212 transitions, 2429 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:17,129 INFO L231 Difference]: Finished difference. Result has 210 places, 195 transitions, 2036 flow [2024-06-04 15:29:17,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2036, PETRI_PLACES=210, PETRI_TRANSITIONS=195} [2024-06-04 15:29:17,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-04 15:29:17,129 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 195 transitions, 2036 flow [2024-06-04 15:29:17,129 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 15:29:17,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:17,130 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 15:29:17,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-04 15:29:17,130 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 15:29:17,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:17,130 INFO L85 PathProgramCache]: Analyzing trace with hash -483857410, now seen corresponding path program 4 times [2024-06-04 15:29:17,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:17,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754391252] [2024-06-04 15:29:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:18,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:18,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754391252] [2024-06-04 15:29:18,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754391252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:18,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:18,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:18,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382836201] [2024-06-04 15:29:18,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:18,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:18,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:18,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:18,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 195 transitions, 2036 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 15:29:18,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:18,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:18,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:18,658 INFO L124 PetriNetUnfolderBase]: 593/1022 cut-off events. [2024-06-04 15:29:18,658 INFO L125 PetriNetUnfolderBase]: For 86229/86229 co-relation queries the response was YES. [2024-06-04 15:29:18,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8125 conditions, 1022 events. 593/1022 cut-off events. For 86229/86229 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4865 event pairs, 66 based on Foata normal form. 1/1022 useless extension candidates. Maximal degree in co-relation 8022. Up to 925 conditions per place. [2024-06-04 15:29:18,666 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 34 changer transitions 0/210 dead transitions. [2024-06-04 15:29:18,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 210 transitions, 2494 flow [2024-06-04 15:29:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:29:18,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:29:18,667 INFO L175 Difference]: Start difference. First operand has 210 places, 195 transitions, 2036 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:29:18,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 210 transitions, 2494 flow [2024-06-04 15:29:18,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 210 transitions, 2399 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:18,846 INFO L231 Difference]: Finished difference. Result has 213 places, 195 transitions, 2014 flow [2024-06-04 15:29:18,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2014, PETRI_PLACES=213, PETRI_TRANSITIONS=195} [2024-06-04 15:29:18,846 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-04 15:29:18,847 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 195 transitions, 2014 flow [2024-06-04 15:29:18,847 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 15:29:18,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:18,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:18,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-04 15:29:18,847 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 15:29:18,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:18,848 INFO L85 PathProgramCache]: Analyzing trace with hash 62783030, now seen corresponding path program 10 times [2024-06-04 15:29:18,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:18,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228955202] [2024-06-04 15:29:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:18,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:20,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:20,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228955202] [2024-06-04 15:29:20,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228955202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:20,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:20,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:20,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097153130] [2024-06-04 15:29:20,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:20,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:20,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:20,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:20,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:20,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:20,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 195 transitions, 2014 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 15:29:20,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:20,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:20,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:20,663 INFO L124 PetriNetUnfolderBase]: 609/1048 cut-off events. [2024-06-04 15:29:20,663 INFO L125 PetriNetUnfolderBase]: For 97007/97007 co-relation queries the response was YES. [2024-06-04 15:29:20,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8486 conditions, 1048 events. 609/1048 cut-off events. For 97007/97007 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5021 event pairs, 72 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 8382. Up to 967 conditions per place. [2024-06-04 15:29:20,671 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 25 changer transitions 0/218 dead transitions. [2024-06-04 15:29:20,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 218 transitions, 2772 flow [2024-06-04 15:29:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-04 15:29:20,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-04 15:29:20,672 INFO L175 Difference]: Start difference. First operand has 213 places, 195 transitions, 2014 flow. Second operand 10 states and 119 transitions. [2024-06-04 15:29:20,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 218 transitions, 2772 flow [2024-06-04 15:29:20,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 218 transitions, 2691 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:20,841 INFO L231 Difference]: Finished difference. Result has 215 places, 202 transitions, 2154 flow [2024-06-04 15:29:20,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2154, PETRI_PLACES=215, PETRI_TRANSITIONS=202} [2024-06-04 15:29:20,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-04 15:29:20,842 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 2154 flow [2024-06-04 15:29:20,842 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 15:29:20,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:20,842 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 15:29:20,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-04 15:29:20,842 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 15:29:20,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:20,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1194358378, now seen corresponding path program 2 times [2024-06-04 15:29:20,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:20,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515718427] [2024-06-04 15:29:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:20,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:21,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:21,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515718427] [2024-06-04 15:29:21,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515718427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:21,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:21,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:21,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398767614] [2024-06-04 15:29:21,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:21,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:21,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:21,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:21,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:21,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 202 transitions, 2154 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 15:29:21,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:21,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:21,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:22,302 INFO L124 PetriNetUnfolderBase]: 613/1056 cut-off events. [2024-06-04 15:29:22,302 INFO L125 PetriNetUnfolderBase]: For 99904/99904 co-relation queries the response was YES. [2024-06-04 15:29:22,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8605 conditions, 1056 events. 613/1056 cut-off events. For 99904/99904 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5087 event pairs, 84 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 8499. Up to 1014 conditions per place. [2024-06-04 15:29:22,309 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 197 selfloop transitions, 17 changer transitions 0/216 dead transitions. [2024-06-04 15:29:22,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 216 transitions, 2647 flow [2024-06-04 15:29:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-04 15:29:22,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 15:29:22,310 INFO L175 Difference]: Start difference. First operand has 215 places, 202 transitions, 2154 flow. Second operand 9 states and 102 transitions. [2024-06-04 15:29:22,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 216 transitions, 2647 flow [2024-06-04 15:29:22,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 2535 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-04 15:29:22,461 INFO L231 Difference]: Finished difference. Result has 220 places, 205 transitions, 2124 flow [2024-06-04 15:29:22,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2124, PETRI_PLACES=220, PETRI_TRANSITIONS=205} [2024-06-04 15:29:22,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-04 15:29:22,461 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 205 transitions, 2124 flow [2024-06-04 15:29:22,461 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 15:29:22,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:22,462 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 15:29:22,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-04 15:29:22,462 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 15:29:22,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:22,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1251148262, now seen corresponding path program 11 times [2024-06-04 15:29:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:22,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806208561] [2024-06-04 15:29:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:22,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:23,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:23,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806208561] [2024-06-04 15:29:23,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806208561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:23,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:23,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275064798] [2024-06-04 15:29:23,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:23,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:23,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:23,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:23,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:23,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:23,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 205 transitions, 2124 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 15:29:23,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:23,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:23,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:24,022 INFO L124 PetriNetUnfolderBase]: 629/1082 cut-off events. [2024-06-04 15:29:24,022 INFO L125 PetriNetUnfolderBase]: For 107605/107605 co-relation queries the response was YES. [2024-06-04 15:29:24,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8892 conditions, 1082 events. 629/1082 cut-off events. For 107605/107605 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5229 event pairs, 69 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 8783. Up to 920 conditions per place. [2024-06-04 15:29:24,031 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-06-04 15:29:24,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 229 transitions, 3091 flow [2024-06-04 15:29:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:24,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:24,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:29:24,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:29:24,032 INFO L175 Difference]: Start difference. First operand has 220 places, 205 transitions, 2124 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:29:24,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 229 transitions, 3091 flow [2024-06-04 15:29:24,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 3045 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:24,220 INFO L231 Difference]: Finished difference. Result has 225 places, 214 transitions, 2392 flow [2024-06-04 15:29:24,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2392, PETRI_PLACES=225, PETRI_TRANSITIONS=214} [2024-06-04 15:29:24,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-04 15:29:24,221 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 214 transitions, 2392 flow [2024-06-04 15:29:24,221 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 15:29:24,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:24,221 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 15:29:24,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-04 15:29:24,221 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 15:29:24,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:24,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1251141752, now seen corresponding path program 12 times [2024-06-04 15:29:24,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:24,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482006066] [2024-06-04 15:29:24,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:24,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:25,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:25,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482006066] [2024-06-04 15:29:25,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482006066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:25,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:25,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:25,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273841884] [2024-06-04 15:29:25,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:25,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:25,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:25,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:25,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:25,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:25,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 214 transitions, 2392 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 15:29:25,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:25,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:25,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:25,713 INFO L124 PetriNetUnfolderBase]: 661/1134 cut-off events. [2024-06-04 15:29:25,714 INFO L125 PetriNetUnfolderBase]: For 124938/124938 co-relation queries the response was YES. [2024-06-04 15:29:25,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9707 conditions, 1134 events. 661/1134 cut-off events. For 124938/124938 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5537 event pairs, 73 based on Foata normal form. 4/1137 useless extension candidates. Maximal degree in co-relation 9596. Up to 867 conditions per place. [2024-06-04 15:29:25,724 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 50 changer transitions 0/240 dead transitions. [2024-06-04 15:29:25,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 240 transitions, 3531 flow [2024-06-04 15:29:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:25,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:29:25,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:29:25,725 INFO L175 Difference]: Start difference. First operand has 225 places, 214 transitions, 2392 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:29:25,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 240 transitions, 3531 flow [2024-06-04 15:29:25,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 240 transitions, 3333 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-04 15:29:25,930 INFO L231 Difference]: Finished difference. Result has 231 places, 222 transitions, 2520 flow [2024-06-04 15:29:25,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2520, PETRI_PLACES=231, PETRI_TRANSITIONS=222} [2024-06-04 15:29:25,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-04 15:29:25,931 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 222 transitions, 2520 flow [2024-06-04 15:29:25,931 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 15:29:25,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:25,931 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 15:29:25,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-04 15:29:25,931 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 15:29:25,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:25,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1194604456, now seen corresponding path program 13 times [2024-06-04 15:29:25,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:25,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790804974] [2024-06-04 15:29:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:25,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:26,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:26,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790804974] [2024-06-04 15:29:26,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790804974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:26,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:26,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:26,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169678543] [2024-06-04 15:29:26,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:26,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:26,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:26,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:27,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:27,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 222 transitions, 2520 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 15:29:27,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:27,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:27,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:27,555 INFO L124 PetriNetUnfolderBase]: 673/1154 cut-off events. [2024-06-04 15:29:27,555 INFO L125 PetriNetUnfolderBase]: For 127419/127419 co-relation queries the response was YES. [2024-06-04 15:29:27,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 1154 events. 673/1154 cut-off events. For 127419/127419 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5659 event pairs, 80 based on Foata normal form. 4/1157 useless extension candidates. Maximal degree in co-relation 9665. Up to 1044 conditions per place. [2024-06-04 15:29:27,564 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 31 changer transitions 0/241 dead transitions. [2024-06-04 15:29:27,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 241 transitions, 3262 flow [2024-06-04 15:29:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:27,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:29:27,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:29:27,572 INFO L175 Difference]: Start difference. First operand has 231 places, 222 transitions, 2520 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:29:27,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 241 transitions, 3262 flow [2024-06-04 15:29:27,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 241 transitions, 2959 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:27,793 INFO L231 Difference]: Finished difference. Result has 233 places, 226 transitions, 2379 flow [2024-06-04 15:29:27,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2379, PETRI_PLACES=233, PETRI_TRANSITIONS=226} [2024-06-04 15:29:27,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-04 15:29:27,794 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 226 transitions, 2379 flow [2024-06-04 15:29:27,794 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 15:29:27,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:27,794 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 15:29:27,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-04 15:29:27,794 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 15:29:27,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash 738285334, now seen corresponding path program 6 times [2024-06-04 15:29:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:27,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419718335] [2024-06-04 15:29:27,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:27,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:28,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419718335] [2024-06-04 15:29:28,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419718335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:28,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:28,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:28,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316397465] [2024-06-04 15:29:28,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:28,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:28,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:28,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:28,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:28,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:28,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 226 transitions, 2379 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 15:29:28,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:28,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:28,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:29,137 INFO L124 PetriNetUnfolderBase]: 670/1149 cut-off events. [2024-06-04 15:29:29,138 INFO L125 PetriNetUnfolderBase]: For 119801/119801 co-relation queries the response was YES. [2024-06-04 15:29:29,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9251 conditions, 1149 events. 670/1149 cut-off events. For 119801/119801 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5635 event pairs, 92 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 9139. Up to 1119 conditions per place. [2024-06-04 15:29:29,146 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 218 selfloop transitions, 15 changer transitions 0/235 dead transitions. [2024-06-04 15:29:29,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 235 transitions, 2865 flow [2024-06-04 15:29:29,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 15:29:29,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 15:29:29,147 INFO L175 Difference]: Start difference. First operand has 233 places, 226 transitions, 2379 flow. Second operand 9 states and 98 transitions. [2024-06-04 15:29:29,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 235 transitions, 2865 flow [2024-06-04 15:29:29,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 235 transitions, 2809 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-04 15:29:29,391 INFO L231 Difference]: Finished difference. Result has 236 places, 226 transitions, 2357 flow [2024-06-04 15:29:29,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2357, PETRI_PLACES=236, PETRI_TRANSITIONS=226} [2024-06-04 15:29:29,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-04 15:29:29,392 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 226 transitions, 2357 flow [2024-06-04 15:29:29,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 15:29:29,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:29,392 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 15:29:29,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-04 15:29:29,392 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 15:29:29,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:29,392 INFO L85 PathProgramCache]: Analyzing trace with hash 738290294, now seen corresponding path program 14 times [2024-06-04 15:29:29,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:29,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993192111] [2024-06-04 15:29:29,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:29,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:30,394 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 15:29:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:30,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993192111] [2024-06-04 15:29:30,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993192111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:30,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:30,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812032561] [2024-06-04 15:29:30,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:30,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:30,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:30,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:30,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:30,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:30,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 226 transitions, 2357 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 15:29:30,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:30,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:30,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:30,937 INFO L124 PetriNetUnfolderBase]: 672/1153 cut-off events. [2024-06-04 15:29:30,937 INFO L125 PetriNetUnfolderBase]: For 121791/121791 co-relation queries the response was YES. [2024-06-04 15:29:30,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9153 conditions, 1153 events. 672/1153 cut-off events. For 121791/121791 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5653 event pairs, 69 based on Foata normal form. 4/1156 useless extension candidates. Maximal degree in co-relation 9039. Up to 881 conditions per place. [2024-06-04 15:29:30,946 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 60 changer transitions 0/245 dead transitions. [2024-06-04 15:29:30,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 245 transitions, 3198 flow [2024-06-04 15:29:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-04 15:29:30,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-04 15:29:30,947 INFO L175 Difference]: Start difference. First operand has 236 places, 226 transitions, 2357 flow. Second operand 10 states and 124 transitions. [2024-06-04 15:29:30,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 245 transitions, 3198 flow [2024-06-04 15:29:31,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 245 transitions, 3091 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:31,213 INFO L231 Difference]: Finished difference. Result has 237 places, 228 transitions, 2408 flow [2024-06-04 15:29:31,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2408, PETRI_PLACES=237, PETRI_TRANSITIONS=228} [2024-06-04 15:29:31,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 15:29:31,213 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 228 transitions, 2408 flow [2024-06-04 15:29:31,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:29:31,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:31,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:31,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-04 15:29:31,214 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 15:29:31,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash 904297444, now seen corresponding path program 3 times [2024-06-04 15:29:31,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:31,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382572338] [2024-06-04 15:29:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:31,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:32,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:32,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382572338] [2024-06-04 15:29:32,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382572338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:32,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:32,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233954581] [2024-06-04 15:29:32,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:32,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:32,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:32,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:32,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 228 transitions, 2408 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 15:29:32,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:32,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:32,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:32,581 INFO L124 PetriNetUnfolderBase]: 676/1161 cut-off events. [2024-06-04 15:29:32,581 INFO L125 PetriNetUnfolderBase]: For 121536/121536 co-relation queries the response was YES. [2024-06-04 15:29:32,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1161 events. 676/1161 cut-off events. For 121536/121536 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5728 event pairs, 93 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 9179. Up to 1126 conditions per place. [2024-06-04 15:29:32,590 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 223 selfloop transitions, 14 changer transitions 0/239 dead transitions. [2024-06-04 15:29:32,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 239 transitions, 2920 flow [2024-06-04 15:29:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-04 15:29:32,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-04 15:29:32,591 INFO L175 Difference]: Start difference. First operand has 237 places, 228 transitions, 2408 flow. Second operand 9 states and 97 transitions. [2024-06-04 15:29:32,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 239 transitions, 2920 flow [2024-06-04 15:29:32,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 239 transitions, 2770 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:32,866 INFO L231 Difference]: Finished difference. Result has 237 places, 229 transitions, 2308 flow [2024-06-04 15:29:32,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2308, PETRI_PLACES=237, PETRI_TRANSITIONS=229} [2024-06-04 15:29:32,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 15:29:32,867 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 229 transitions, 2308 flow [2024-06-04 15:29:32,867 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 15:29:32,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:32,867 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 15:29:32,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-04 15:29:32,867 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 15:29:32,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1996650250, now seen corresponding path program 4 times [2024-06-04 15:29:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:32,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251465926] [2024-06-04 15:29:32,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:33,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:33,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251465926] [2024-06-04 15:29:33,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251465926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:33,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:33,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:33,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230764591] [2024-06-04 15:29:33,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:33,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:33,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:33,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:33,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:33,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:33,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 229 transitions, 2308 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 15:29:33,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:33,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:33,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:34,303 INFO L124 PetriNetUnfolderBase]: 680/1169 cut-off events. [2024-06-04 15:29:34,303 INFO L125 PetriNetUnfolderBase]: For 124635/124635 co-relation queries the response was YES. [2024-06-04 15:29:34,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9156 conditions, 1169 events. 680/1169 cut-off events. For 124635/124635 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5769 event pairs, 93 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 9043. Up to 1139 conditions per place. [2024-06-04 15:29:34,313 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 225 selfloop transitions, 14 changer transitions 0/241 dead transitions. [2024-06-04 15:29:34,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 241 transitions, 2842 flow [2024-06-04 15:29:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-04 15:29:34,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-04 15:29:34,314 INFO L175 Difference]: Start difference. First operand has 237 places, 229 transitions, 2308 flow. Second operand 9 states and 98 transitions. [2024-06-04 15:29:34,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 241 transitions, 2842 flow [2024-06-04 15:29:34,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 241 transitions, 2804 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 15:29:34,588 INFO L231 Difference]: Finished difference. Result has 239 places, 231 transitions, 2336 flow [2024-06-04 15:29:34,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2336, PETRI_PLACES=239, PETRI_TRANSITIONS=231} [2024-06-04 15:29:34,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-04 15:29:34,589 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 231 transitions, 2336 flow [2024-06-04 15:29:34,589 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 15:29:34,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:34,589 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 15:29:34,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-04 15:29:34,589 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 15:29:34,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:34,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1996896328, now seen corresponding path program 15 times [2024-06-04 15:29:34,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:34,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889385767] [2024-06-04 15:29:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:34,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:35,536 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 15:29:35,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:35,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889385767] [2024-06-04 15:29:35,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889385767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:35,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:35,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306929715] [2024-06-04 15:29:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:35,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:35,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:35,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 231 transitions, 2336 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 15:29:35,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:35,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:35,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:36,117 INFO L124 PetriNetUnfolderBase]: 694/1193 cut-off events. [2024-06-04 15:29:36,117 INFO L125 PetriNetUnfolderBase]: For 134111/134111 co-relation queries the response was YES. [2024-06-04 15:29:36,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9365 conditions, 1193 events. 694/1193 cut-off events. For 134111/134111 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5933 event pairs, 83 based on Foata normal form. 4/1196 useless extension candidates. Maximal degree in co-relation 9251. Up to 1084 conditions per place. [2024-06-04 15:29:36,127 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 28 changer transitions 0/249 dead transitions. [2024-06-04 15:29:36,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 3089 flow [2024-06-04 15:29:36,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:29:36,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:29:36,127 INFO L175 Difference]: Start difference. First operand has 239 places, 231 transitions, 2336 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:29:36,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 3089 flow [2024-06-04 15:29:36,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 249 transitions, 3023 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:36,395 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2413 flow [2024-06-04 15:29:36,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2413, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2024-06-04 15:29:36,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-04 15:29:36,395 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2413 flow [2024-06-04 15:29:36,396 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 15:29:36,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:36,396 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 15:29:36,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-04 15:29:36,396 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 15:29:36,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash 618978894, now seen corresponding path program 5 times [2024-06-04 15:29:36,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:36,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395530827] [2024-06-04 15:29:36,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395530827] [2024-06-04 15:29:37,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395530827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:37,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:37,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 15:29:37,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251463888] [2024-06-04 15:29:37,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:37,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 15:29:37,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:37,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 15:29:37,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 15:29:37,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:37,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 2413 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 15:29:37,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:37,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:37,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:37,704 INFO L124 PetriNetUnfolderBase]: 686/1180 cut-off events. [2024-06-04 15:29:37,704 INFO L125 PetriNetUnfolderBase]: For 126457/126457 co-relation queries the response was YES. [2024-06-04 15:29:37,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9129 conditions, 1180 events. 686/1180 cut-off events. For 126457/126457 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5851 event pairs, 88 based on Foata normal form. 3/1182 useless extension candidates. Maximal degree in co-relation 9016. Up to 1123 conditions per place. [2024-06-04 15:29:37,714 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 20 changer transitions 0/246 dead transitions. [2024-06-04 15:29:37,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 246 transitions, 2931 flow [2024-06-04 15:29:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-04 15:29:37,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-04 15:29:37,715 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2413 flow. Second operand 9 states and 104 transitions. [2024-06-04 15:29:37,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 246 transitions, 2931 flow [2024-06-04 15:29:37,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 246 transitions, 2712 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-04 15:29:37,968 INFO L231 Difference]: Finished difference. Result has 238 places, 235 transitions, 2242 flow [2024-06-04 15:29:37,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2242, PETRI_PLACES=238, PETRI_TRANSITIONS=235} [2024-06-04 15:29:37,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-04 15:29:37,968 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 235 transitions, 2242 flow [2024-06-04 15:29:37,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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 15:29:37,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:37,969 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 15:29:37,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-04 15:29:37,969 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 15:29:37,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:37,969 INFO L85 PathProgramCache]: Analyzing trace with hash 618985590, now seen corresponding path program 16 times [2024-06-04 15:29:37,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:37,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328078061] [2024-06-04 15:29:37,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:37,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:39,069 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 15:29:39,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:39,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328078061] [2024-06-04 15:29:39,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328078061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:39,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:39,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:39,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574950498] [2024-06-04 15:29:39,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:39,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:39,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:39,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:39,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 235 transitions, 2242 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 15:29:39,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:39,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:39,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:39,657 INFO L124 PetriNetUnfolderBase]: 682/1174 cut-off events. [2024-06-04 15:29:39,657 INFO L125 PetriNetUnfolderBase]: For 121688/121688 co-relation queries the response was YES. [2024-06-04 15:29:39,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8723 conditions, 1174 events. 682/1174 cut-off events. For 121688/121688 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5821 event pairs, 82 based on Foata normal form. 2/1175 useless extension candidates. Maximal degree in co-relation 8611. Up to 1076 conditions per place. [2024-06-04 15:29:39,666 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2024-06-04 15:29:39,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 249 transitions, 2922 flow [2024-06-04 15:29:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 15:29:39,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 15:29:39,667 INFO L175 Difference]: Start difference. First operand has 238 places, 235 transitions, 2242 flow. Second operand 10 states and 117 transitions. [2024-06-04 15:29:39,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 249 transitions, 2922 flow [2024-06-04 15:29:39,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 249 transitions, 2783 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:39,943 INFO L231 Difference]: Finished difference. Result has 239 places, 235 transitions, 2168 flow [2024-06-04 15:29:39,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2168, PETRI_PLACES=239, PETRI_TRANSITIONS=235} [2024-06-04 15:29:39,944 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-04 15:29:39,944 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 235 transitions, 2168 flow [2024-06-04 15:29:39,944 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 15:29:39,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:39,945 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 15:29:39,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-04 15:29:39,945 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 15:29:39,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash 914444358, now seen corresponding path program 5 times [2024-06-04 15:29:39,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:39,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962481682] [2024-06-04 15:29:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:39,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:40,861 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 15:29:40,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:40,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962481682] [2024-06-04 15:29:40,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962481682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:40,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103547950] [2024-06-04 15:29:40,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:40,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:40,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:40,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:40,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:40,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 235 transitions, 2168 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 15:29:40,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:40,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:40,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:41,347 INFO L124 PetriNetUnfolderBase]: 679/1169 cut-off events. [2024-06-04 15:29:41,347 INFO L125 PetriNetUnfolderBase]: For 115577/115577 co-relation queries the response was YES. [2024-06-04 15:29:41,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8459 conditions, 1169 events. 679/1169 cut-off events. For 115577/115577 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5789 event pairs, 92 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 8346. Up to 1131 conditions per place. [2024-06-04 15:29:41,357 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 226 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-06-04 15:29:41,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 245 transitions, 2678 flow [2024-06-04 15:29:41,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 15:29:41,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 15:29:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-04 15:29:41,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:29:41,358 INFO L175 Difference]: Start difference. First operand has 239 places, 235 transitions, 2168 flow. Second operand 9 states and 99 transitions. [2024-06-04 15:29:41,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 245 transitions, 2678 flow [2024-06-04 15:29:41,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 245 transitions, 2605 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:41,637 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2134 flow [2024-06-04 15:29:41,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2134, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2024-06-04 15:29:41,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-04 15:29:41,638 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2134 flow [2024-06-04 15:29:41,638 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 15:29:41,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:41,638 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 15:29:41,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-04 15:29:41,638 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 15:29:41,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:41,639 INFO L85 PathProgramCache]: Analyzing trace with hash 904316100, now seen corresponding path program 17 times [2024-06-04 15:29:41,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:41,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141820598] [2024-06-04 15:29:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:42,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141820598] [2024-06-04 15:29:42,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141820598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:42,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:42,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:29:42,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757095550] [2024-06-04 15:29:42,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:42,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:29:42,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:29:42,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:29:42,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:42,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 2134 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 15:29:42,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:42,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:42,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:43,172 INFO L124 PetriNetUnfolderBase]: 675/1163 cut-off events. [2024-06-04 15:29:43,173 INFO L125 PetriNetUnfolderBase]: For 113860/113860 co-relation queries the response was YES. [2024-06-04 15:29:43,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8217 conditions, 1163 events. 675/1163 cut-off events. For 113860/113860 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5777 event pairs, 91 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 8104. Up to 1115 conditions per place. [2024-06-04 15:29:43,182 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 20 changer transitions 0/249 dead transitions. [2024-06-04 15:29:43,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 249 transitions, 2708 flow [2024-06-04 15:29:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:43,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-04 15:29:43,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:29:43,184 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2134 flow. Second operand 10 states and 110 transitions. [2024-06-04 15:29:43,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 249 transitions, 2708 flow [2024-06-04 15:29:43,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 249 transitions, 2640 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:43,452 INFO L231 Difference]: Finished difference. Result has 242 places, 237 transitions, 2163 flow [2024-06-04 15:29:43,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2163, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2024-06-04 15:29:43,453 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-04 15:29:43,453 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 2163 flow [2024-06-04 15:29:43,453 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 15:29:43,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:43,453 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 15:29:43,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-04 15:29:43,453 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 15:29:43,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:43,453 INFO L85 PathProgramCache]: Analyzing trace with hash -660887753, now seen corresponding path program 1 times [2024-06-04 15:29:43,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:43,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953889666] [2024-06-04 15:29:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:43,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:44,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:44,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953889666] [2024-06-04 15:29:44,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953889666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:44,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:44,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:44,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602950401] [2024-06-04 15:29:44,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:44,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:44,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:44,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:44,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:44,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:44,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 2163 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 15:29:44,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:44,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:44,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:45,486 INFO L124 PetriNetUnfolderBase]: 686/1184 cut-off events. [2024-06-04 15:29:45,486 INFO L125 PetriNetUnfolderBase]: For 121720/121720 co-relation queries the response was YES. [2024-06-04 15:29:45,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8482 conditions, 1184 events. 686/1184 cut-off events. For 121720/121720 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5904 event pairs, 82 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 8368. Up to 1054 conditions per place. [2024-06-04 15:29:45,495 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 25 changer transitions 0/266 dead transitions. [2024-06-04 15:29:45,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 266 transitions, 2935 flow [2024-06-04 15:29:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:45,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 15:29:45,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:29:45,496 INFO L175 Difference]: Start difference. First operand has 242 places, 237 transitions, 2163 flow. Second operand 12 states and 141 transitions. [2024-06-04 15:29:45,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 266 transitions, 2935 flow [2024-06-04 15:29:45,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 266 transitions, 2838 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:45,781 INFO L231 Difference]: Finished difference. Result has 245 places, 239 transitions, 2142 flow [2024-06-04 15:29:45,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2142, PETRI_PLACES=245, PETRI_TRANSITIONS=239} [2024-06-04 15:29:45,781 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-04 15:29:45,781 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 239 transitions, 2142 flow [2024-06-04 15:29:45,781 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 15:29:45,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:45,782 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 15:29:45,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-04 15:29:45,782 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 15:29:45,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash 64925819, now seen corresponding path program 2 times [2024-06-04 15:29:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:45,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375701662] [2024-06-04 15:29:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:47,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:47,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:47,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375701662] [2024-06-04 15:29:47,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375701662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:47,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:47,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:47,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122270079] [2024-06-04 15:29:47,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:47,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:47,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:47,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:47,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:47,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:47,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 239 transitions, 2142 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 15:29:47,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:47,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:47,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:47,693 INFO L124 PetriNetUnfolderBase]: 697/1205 cut-off events. [2024-06-04 15:29:47,693 INFO L125 PetriNetUnfolderBase]: For 131672/131672 co-relation queries the response was YES. [2024-06-04 15:29:47,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8690 conditions, 1205 events. 697/1205 cut-off events. For 131672/131672 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6048 event pairs, 90 based on Foata normal form. 2/1206 useless extension candidates. Maximal degree in co-relation 8576. Up to 1117 conditions per place. [2024-06-04 15:29:47,703 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 25 changer transitions 0/267 dead transitions. [2024-06-04 15:29:47,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 267 transitions, 2920 flow [2024-06-04 15:29:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:29:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:29:47,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:29:47,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:29:47,704 INFO L175 Difference]: Start difference. First operand has 245 places, 239 transitions, 2142 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:29:47,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 267 transitions, 2920 flow [2024-06-04 15:29:48,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 267 transitions, 2868 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:48,043 INFO L231 Difference]: Finished difference. Result has 249 places, 241 transitions, 2170 flow [2024-06-04 15:29:48,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2170, PETRI_PLACES=249, PETRI_TRANSITIONS=241} [2024-06-04 15:29:48,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-04 15:29:48,043 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 241 transitions, 2170 flow [2024-06-04 15:29:48,044 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 15:29:48,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:48,044 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 15:29:48,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-04 15:29:48,044 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 15:29:48,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:48,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1683747825, now seen corresponding path program 3 times [2024-06-04 15:29:48,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:48,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873159955] [2024-06-04 15:29:48,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:48,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:49,428 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 15:29:49,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:49,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873159955] [2024-06-04 15:29:49,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873159955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:49,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:49,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791025904] [2024-06-04 15:29:49,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:49,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:49,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:49,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:49,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:49,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 241 transitions, 2170 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 15:29:49,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:49,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:49,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:50,301 INFO L124 PetriNetUnfolderBase]: 694/1200 cut-off events. [2024-06-04 15:29:50,301 INFO L125 PetriNetUnfolderBase]: For 129260/129260 co-relation queries the response was YES. [2024-06-04 15:29:50,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8559 conditions, 1200 events. 694/1200 cut-off events. For 129260/129260 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6027 event pairs, 91 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 8443. Up to 1129 conditions per place. [2024-06-04 15:29:50,311 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 24 changer transitions 0/266 dead transitions. [2024-06-04 15:29:50,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 266 transitions, 2766 flow [2024-06-04 15:29:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:29:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:29:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-04 15:29:50,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35336538461538464 [2024-06-04 15:29:50,312 INFO L175 Difference]: Start difference. First operand has 249 places, 241 transitions, 2170 flow. Second operand 13 states and 147 transitions. [2024-06-04 15:29:50,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 266 transitions, 2766 flow [2024-06-04 15:29:50,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 266 transitions, 2726 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:29:50,647 INFO L231 Difference]: Finished difference. Result has 254 places, 241 transitions, 2182 flow [2024-06-04 15:29:50,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2182, PETRI_PLACES=254, PETRI_TRANSITIONS=241} [2024-06-04 15:29:50,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:29:50,648 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 241 transitions, 2182 flow [2024-06-04 15:29:50,648 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 15:29:50,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:50,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:29:50,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-04 15:29:50,648 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 15:29:50,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:50,649 INFO L85 PathProgramCache]: Analyzing trace with hash 2056023077, now seen corresponding path program 4 times [2024-06-04 15:29:50,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:50,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168925407] [2024-06-04 15:29:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:50,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:51,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:51,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168925407] [2024-06-04 15:29:51,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168925407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:51,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:51,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:51,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913206637] [2024-06-04 15:29:51,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:51,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:51,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:51,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:51,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:52,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:52,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 241 transitions, 2182 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 15:29:52,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:52,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:52,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:52,475 INFO L124 PetriNetUnfolderBase]: 698/1208 cut-off events. [2024-06-04 15:29:52,475 INFO L125 PetriNetUnfolderBase]: For 132455/132455 co-relation queries the response was YES. [2024-06-04 15:29:52,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 1208 events. 698/1208 cut-off events. For 132455/132455 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6087 event pairs, 93 based on Foata normal form. 2/1209 useless extension candidates. Maximal degree in co-relation 8534. Up to 1131 conditions per place. [2024-06-04 15:29:52,486 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 235 selfloop transitions, 24 changer transitions 0/261 dead transitions. [2024-06-04 15:29:52,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 261 transitions, 2762 flow [2024-06-04 15:29:52,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:29:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:29:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-04 15:29:52,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-04 15:29:52,487 INFO L175 Difference]: Start difference. First operand has 254 places, 241 transitions, 2182 flow. Second operand 10 states and 118 transitions. [2024-06-04 15:29:52,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 261 transitions, 2762 flow [2024-06-04 15:29:52,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 261 transitions, 2709 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-04 15:29:52,821 INFO L231 Difference]: Finished difference. Result has 252 places, 242 transitions, 2195 flow [2024-06-04 15:29:52,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2195, PETRI_PLACES=252, PETRI_TRANSITIONS=242} [2024-06-04 15:29:52,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 15:29:52,822 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 242 transitions, 2195 flow [2024-06-04 15:29:52,822 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 15:29:52,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:52,822 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 15:29:52,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-04 15:29:52,822 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 15:29:52,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2056028812, now seen corresponding path program 1 times [2024-06-04 15:29:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:52,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458293777] [2024-06-04 15:29:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:52,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:54,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:54,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458293777] [2024-06-04 15:29:54,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458293777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:54,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:54,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:54,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263270185] [2024-06-04 15:29:54,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:54,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:54,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:54,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:54,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:54,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:54,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 242 transitions, 2195 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 15:29:54,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:54,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:54,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:55,346 INFO L124 PetriNetUnfolderBase]: 694/1202 cut-off events. [2024-06-04 15:29:55,346 INFO L125 PetriNetUnfolderBase]: For 129369/129369 co-relation queries the response was YES. [2024-06-04 15:29:55,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8514 conditions, 1202 events. 694/1202 cut-off events. For 129369/129369 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6061 event pairs, 90 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 8395. Up to 1115 conditions per place. [2024-06-04 15:29:55,356 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 27 changer transitions 0/263 dead transitions. [2024-06-04 15:29:55,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 263 transitions, 2777 flow [2024-06-04 15:29:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:55,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:29:55,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:29:55,357 INFO L175 Difference]: Start difference. First operand has 252 places, 242 transitions, 2195 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:29:55,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 263 transitions, 2777 flow [2024-06-04 15:29:55,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 263 transitions, 2715 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:29:55,677 INFO L231 Difference]: Finished difference. Result has 254 places, 242 transitions, 2192 flow [2024-06-04 15:29:55,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2192, PETRI_PLACES=254, PETRI_TRANSITIONS=242} [2024-06-04 15:29:55,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:29:55,678 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 242 transitions, 2192 flow [2024-06-04 15:29:55,678 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 15:29:55,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:55,678 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 15:29:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-04 15:29:55,678 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 15:29:55,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:55,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2055875207, now seen corresponding path program 5 times [2024-06-04 15:29:55,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:55,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545868084] [2024-06-04 15:29:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:55,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:57,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:57,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545868084] [2024-06-04 15:29:57,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545868084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:57,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:57,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:57,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231345237] [2024-06-04 15:29:57,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:57,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:57,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:57,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:57,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:57,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:57,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 242 transitions, 2192 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 15:29:57,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:57,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:57,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:29:57,696 INFO L124 PetriNetUnfolderBase]: 691/1197 cut-off events. [2024-06-04 15:29:57,697 INFO L125 PetriNetUnfolderBase]: For 123061/123061 co-relation queries the response was YES. [2024-06-04 15:29:57,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8328 conditions, 1197 events. 691/1197 cut-off events. For 123061/123061 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6028 event pairs, 89 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 8209. Up to 1127 conditions per place. [2024-06-04 15:29:57,706 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 20 changer transitions 0/263 dead transitions. [2024-06-04 15:29:57,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 263 transitions, 2770 flow [2024-06-04 15:29:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:29:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:29:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:29:57,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:29:57,707 INFO L175 Difference]: Start difference. First operand has 254 places, 242 transitions, 2192 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:29:57,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 263 transitions, 2770 flow [2024-06-04 15:29:58,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 263 transitions, 2702 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:29:58,065 INFO L231 Difference]: Finished difference. Result has 255 places, 242 transitions, 2168 flow [2024-06-04 15:29:58,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2168, PETRI_PLACES=255, PETRI_TRANSITIONS=242} [2024-06-04 15:29:58,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 15:29:58,065 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 242 transitions, 2168 flow [2024-06-04 15:29:58,065 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 15:29:58,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:29:58,065 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 15:29:58,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-04 15:29:58,066 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 15:29:58,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:29:58,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1335082051, now seen corresponding path program 6 times [2024-06-04 15:29:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:29:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946393705] [2024-06-04 15:29:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:29:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:29:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:29:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:29:59,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:29:59,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946393705] [2024-06-04 15:29:59,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946393705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:29:59,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:29:59,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:29:59,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721329016] [2024-06-04 15:29:59,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:29:59,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:29:59,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:29:59,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:29:59,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:29:59,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:29:59,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 242 transitions, 2168 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 15:29:59,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:29:59,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:29:59,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:00,187 INFO L124 PetriNetUnfolderBase]: 698/1210 cut-off events. [2024-06-04 15:30:00,187 INFO L125 PetriNetUnfolderBase]: For 126077/126077 co-relation queries the response was YES. [2024-06-04 15:30:00,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8393 conditions, 1210 events. 698/1210 cut-off events. For 126077/126077 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6128 event pairs, 77 based on Foata normal form. 2/1211 useless extension candidates. Maximal degree in co-relation 8273. Up to 1009 conditions per place. [2024-06-04 15:30:00,196 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 63 changer transitions 0/268 dead transitions. [2024-06-04 15:30:00,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 268 transitions, 2870 flow [2024-06-04 15:30:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:30:00,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:30:00,197 INFO L175 Difference]: Start difference. First operand has 255 places, 242 transitions, 2168 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:30:00,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 268 transitions, 2870 flow [2024-06-04 15:30:00,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 268 transitions, 2808 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:30:00,541 INFO L231 Difference]: Finished difference. Result has 258 places, 249 transitions, 2373 flow [2024-06-04 15:30:00,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2373, PETRI_PLACES=258, PETRI_TRANSITIONS=249} [2024-06-04 15:30:00,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-04 15:30:00,541 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 249 transitions, 2373 flow [2024-06-04 15:30:00,542 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 15:30:00,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:00,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:00,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-04 15:30:00,542 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 15:30:00,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1335087786, now seen corresponding path program 2 times [2024-06-04 15:30:00,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:00,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613918230] [2024-06-04 15:30:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:00,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:02,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:02,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613918230] [2024-06-04 15:30:02,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613918230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:02,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:02,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:02,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328893294] [2024-06-04 15:30:02,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:02,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:02,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:02,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:02,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:02,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:02,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 249 transitions, 2373 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 15:30:02,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:02,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:02,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:03,238 INFO L124 PetriNetUnfolderBase]: 694/1204 cut-off events. [2024-06-04 15:30:03,238 INFO L125 PetriNetUnfolderBase]: For 123701/123701 co-relation queries the response was YES. [2024-06-04 15:30:03,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8329 conditions, 1204 events. 694/1204 cut-off events. For 123701/123701 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6143 event pairs, 52 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 8207. Up to 860 conditions per place. [2024-06-04 15:30:03,249 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 86 changer transitions 0/276 dead transitions. [2024-06-04 15:30:03,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 276 transitions, 3017 flow [2024-06-04 15:30:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-04 15:30:03,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-04 15:30:03,250 INFO L175 Difference]: Start difference. First operand has 258 places, 249 transitions, 2373 flow. Second operand 11 states and 141 transitions. [2024-06-04 15:30:03,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 276 transitions, 3017 flow [2024-06-04 15:30:03,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 276 transitions, 2831 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:03,571 INFO L231 Difference]: Finished difference. Result has 266 places, 254 transitions, 2482 flow [2024-06-04 15:30:03,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2482, PETRI_PLACES=266, PETRI_TRANSITIONS=254} [2024-06-04 15:30:03,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-04 15:30:03,572 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 254 transitions, 2482 flow [2024-06-04 15:30:03,572 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 15:30:03,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:03,572 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 15:30:03,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-04 15:30:03,572 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 15:30:03,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:03,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1340659912, now seen corresponding path program 1 times [2024-06-04 15:30:03,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:03,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641917565] [2024-06-04 15:30:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:03,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:05,098 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 15:30:05,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:05,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641917565] [2024-06-04 15:30:05,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641917565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:05,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:05,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:05,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107864353] [2024-06-04 15:30:05,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:05,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:05,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:05,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:05,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:05,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 254 transitions, 2482 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 15:30:05,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:05,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:05,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:05,554 INFO L124 PetriNetUnfolderBase]: 698/1212 cut-off events. [2024-06-04 15:30:05,555 INFO L125 PetriNetUnfolderBase]: For 125526/125526 co-relation queries the response was YES. [2024-06-04 15:30:05,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8597 conditions, 1212 events. 698/1212 cut-off events. For 125526/125526 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6174 event pairs, 62 based on Foata normal form. 2/1213 useless extension candidates. Maximal degree in co-relation 8471. Up to 1053 conditions per place. [2024-06-04 15:30:05,565 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 48 changer transitions 0/274 dead transitions. [2024-06-04 15:30:05,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 274 transitions, 3086 flow [2024-06-04 15:30:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-04 15:30:05,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-04 15:30:05,566 INFO L175 Difference]: Start difference. First operand has 266 places, 254 transitions, 2482 flow. Second operand 10 states and 123 transitions. [2024-06-04 15:30:05,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 274 transitions, 3086 flow [2024-06-04 15:30:05,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 274 transitions, 2983 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:05,875 INFO L231 Difference]: Finished difference. Result has 270 places, 255 transitions, 2487 flow [2024-06-04 15:30:05,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2487, PETRI_PLACES=270, PETRI_TRANSITIONS=255} [2024-06-04 15:30:05,876 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-04 15:30:05,876 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 255 transitions, 2487 flow [2024-06-04 15:30:05,876 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 15:30:05,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:05,876 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 15:30:05,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-04 15:30:05,876 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 15:30:05,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:05,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1287747034, now seen corresponding path program 3 times [2024-06-04 15:30:05,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:05,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557788097] [2024-06-04 15:30:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:05,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:07,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:07,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557788097] [2024-06-04 15:30:07,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557788097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:07,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:07,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465053457] [2024-06-04 15:30:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:07,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:07,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:07,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:07,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 255 transitions, 2487 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 15:30:07,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:07,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:07,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:07,785 INFO L124 PetriNetUnfolderBase]: 704/1222 cut-off events. [2024-06-04 15:30:07,785 INFO L125 PetriNetUnfolderBase]: For 128497/128497 co-relation queries the response was YES. [2024-06-04 15:30:07,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8621 conditions, 1222 events. 704/1222 cut-off events. For 128497/128497 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6225 event pairs, 71 based on Foata normal form. 2/1223 useless extension candidates. Maximal degree in co-relation 8494. Up to 600 conditions per place. [2024-06-04 15:30:07,795 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 123 changer transitions 0/279 dead transitions. [2024-06-04 15:30:07,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 279 transitions, 3463 flow [2024-06-04 15:30:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-04 15:30:07,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-04 15:30:07,796 INFO L175 Difference]: Start difference. First operand has 270 places, 255 transitions, 2487 flow. Second operand 10 states and 137 transitions. [2024-06-04 15:30:07,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 279 transitions, 3463 flow [2024-06-04 15:30:08,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 279 transitions, 3365 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:08,125 INFO L231 Difference]: Finished difference. Result has 272 places, 257 transitions, 2666 flow [2024-06-04 15:30:08,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2666, PETRI_PLACES=272, PETRI_TRANSITIONS=257} [2024-06-04 15:30:08,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-04 15:30:08,125 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 257 transitions, 2666 flow [2024-06-04 15:30:08,126 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 15:30:08,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:08,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:08,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-04 15:30:08,126 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 15:30:08,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1287752769, now seen corresponding path program 7 times [2024-06-04 15:30:08,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:08,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635165015] [2024-06-04 15:30:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:09,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:09,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635165015] [2024-06-04 15:30:09,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635165015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:09,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:09,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:09,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674641613] [2024-06-04 15:30:09,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:09,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:09,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:09,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:09,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 257 transitions, 2666 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 15:30:09,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:09,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:09,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:09,641 INFO L124 PetriNetUnfolderBase]: 708/1230 cut-off events. [2024-06-04 15:30:09,641 INFO L125 PetriNetUnfolderBase]: For 132298/132298 co-relation queries the response was YES. [2024-06-04 15:30:09,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 1230 events. 708/1230 cut-off events. For 132298/132298 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6270 event pairs, 76 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 8780. Up to 942 conditions per place. [2024-06-04 15:30:09,653 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 85 changer transitions 0/276 dead transitions. [2024-06-04 15:30:09,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 276 transitions, 3278 flow [2024-06-04 15:30:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:09,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:09,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-04 15:30:09,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-04 15:30:09,654 INFO L175 Difference]: Start difference. First operand has 272 places, 257 transitions, 2666 flow. Second operand 10 states and 129 transitions. [2024-06-04 15:30:09,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 276 transitions, 3278 flow [2024-06-04 15:30:09,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 276 transitions, 3027 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:09,986 INFO L231 Difference]: Finished difference. Result has 274 places, 258 transitions, 2605 flow [2024-06-04 15:30:09,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2605, PETRI_PLACES=274, PETRI_TRANSITIONS=258} [2024-06-04 15:30:09,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-04 15:30:09,987 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 258 transitions, 2605 flow [2024-06-04 15:30:09,987 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 15:30:09,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:09,987 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 15:30:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-04 15:30:09,987 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 15:30:09,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1340651976, now seen corresponding path program 4 times [2024-06-04 15:30:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:09,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421526581] [2024-06-04 15:30:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:11,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:11,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421526581] [2024-06-04 15:30:11,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421526581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:11,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:11,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:11,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970651576] [2024-06-04 15:30:11,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:11,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:11,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:11,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:11,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:11,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:11,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 258 transitions, 2605 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 15:30:11,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:11,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:11,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:12,073 INFO L124 PetriNetUnfolderBase]: 704/1224 cut-off events. [2024-06-04 15:30:12,073 INFO L125 PetriNetUnfolderBase]: For 125344/125344 co-relation queries the response was YES. [2024-06-04 15:30:12,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8561 conditions, 1224 events. 704/1224 cut-off events. For 125344/125344 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6306 event pairs, 53 based on Foata normal form. 2/1225 useless extension candidates. Maximal degree in co-relation 8433. Up to 880 conditions per place. [2024-06-04 15:30:12,085 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 89 changer transitions 0/279 dead transitions. [2024-06-04 15:30:12,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 279 transitions, 3221 flow [2024-06-04 15:30:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:12,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:30:12,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:30:12,086 INFO L175 Difference]: Start difference. First operand has 274 places, 258 transitions, 2605 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:30:12,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 279 transitions, 3221 flow [2024-06-04 15:30:12,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 279 transitions, 3031 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:12,349 INFO L231 Difference]: Finished difference. Result has 277 places, 258 transitions, 2598 flow [2024-06-04 15:30:12,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2598, PETRI_PLACES=277, PETRI_TRANSITIONS=258} [2024-06-04 15:30:12,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-04 15:30:12,350 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 258 transitions, 2598 flow [2024-06-04 15:30:12,350 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 15:30:12,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:12,350 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 15:30:12,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-04 15:30:12,350 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 15:30:12,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1334934181, now seen corresponding path program 8 times [2024-06-04 15:30:12,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:12,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937165373] [2024-06-04 15:30:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:12,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:13,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:13,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937165373] [2024-06-04 15:30:13,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937165373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:13,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:13,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:13,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626348316] [2024-06-04 15:30:13,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:13,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:13,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:13,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:13,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:13,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 258 transitions, 2598 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 15:30:13,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:13,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:13,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:13,909 INFO L124 PetriNetUnfolderBase]: 715/1245 cut-off events. [2024-06-04 15:30:13,909 INFO L125 PetriNetUnfolderBase]: For 135135/135135 co-relation queries the response was YES. [2024-06-04 15:30:13,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8892 conditions, 1245 events. 715/1245 cut-off events. For 135135/135135 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6423 event pairs, 76 based on Foata normal form. 2/1246 useless extension candidates. Maximal degree in co-relation 8763. Up to 928 conditions per place. [2024-06-04 15:30:13,920 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 84 changer transitions 0/280 dead transitions. [2024-06-04 15:30:13,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 280 transitions, 3412 flow [2024-06-04 15:30:13,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-04 15:30:13,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-04 15:30:13,921 INFO L175 Difference]: Start difference. First operand has 277 places, 258 transitions, 2598 flow. Second operand 10 states and 131 transitions. [2024-06-04 15:30:13,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 280 transitions, 3412 flow [2024-06-04 15:30:14,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 280 transitions, 3247 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:14,220 INFO L231 Difference]: Finished difference. Result has 279 places, 260 transitions, 2639 flow [2024-06-04 15:30:14,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2433, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2639, PETRI_PLACES=279, PETRI_TRANSITIONS=260} [2024-06-04 15:30:14,220 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-04 15:30:14,221 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 260 transitions, 2639 flow [2024-06-04 15:30:14,221 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 15:30:14,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:14,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:14,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-04 15:30:14,221 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 15:30:14,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1334937901, now seen corresponding path program 9 times [2024-06-04 15:30:14,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:14,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776016108] [2024-06-04 15:30:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:14,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:15,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:15,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776016108] [2024-06-04 15:30:15,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776016108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:15,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:15,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508777744] [2024-06-04 15:30:15,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:15,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:15,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:15,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:15,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:15,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:15,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 260 transitions, 2639 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 15:30:15,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:15,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:15,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:15,759 INFO L124 PetriNetUnfolderBase]: 712/1240 cut-off events. [2024-06-04 15:30:15,759 INFO L125 PetriNetUnfolderBase]: For 130779/130779 co-relation queries the response was YES. [2024-06-04 15:30:15,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8707 conditions, 1240 events. 712/1240 cut-off events. For 130779/130779 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6374 event pairs, 77 based on Foata normal form. 2/1241 useless extension candidates. Maximal degree in co-relation 8577. Up to 946 conditions per place. [2024-06-04 15:30:15,771 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 83 changer transitions 0/278 dead transitions. [2024-06-04 15:30:15,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 278 transitions, 3241 flow [2024-06-04 15:30:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-04 15:30:15,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:30:15,772 INFO L175 Difference]: Start difference. First operand has 279 places, 260 transitions, 2639 flow. Second operand 10 states and 130 transitions. [2024-06-04 15:30:15,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 278 transitions, 3241 flow [2024-06-04 15:30:16,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 278 transitions, 3119 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:16,072 INFO L231 Difference]: Finished difference. Result has 283 places, 260 transitions, 2689 flow [2024-06-04 15:30:16,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2689, PETRI_PLACES=283, PETRI_TRANSITIONS=260} [2024-06-04 15:30:16,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-04 15:30:16,072 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 260 transitions, 2689 flow [2024-06-04 15:30:16,072 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 15:30:16,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:16,073 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 15:30:16,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-04 15:30:16,073 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 15:30:16,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:16,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1065456643, now seen corresponding path program 10 times [2024-06-04 15:30:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:16,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050914892] [2024-06-04 15:30:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:16,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:17,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:17,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050914892] [2024-06-04 15:30:17,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050914892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:17,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:17,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:17,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722751621] [2024-06-04 15:30:17,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:17,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:17,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:17,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:17,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:17,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:17,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 260 transitions, 2689 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 15:30:17,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:17,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:17,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:17,652 INFO L124 PetriNetUnfolderBase]: 716/1248 cut-off events. [2024-06-04 15:30:17,652 INFO L125 PetriNetUnfolderBase]: For 133730/133730 co-relation queries the response was YES. [2024-06-04 15:30:17,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8894 conditions, 1248 events. 716/1248 cut-off events. For 133730/133730 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6456 event pairs, 85 based on Foata normal form. 2/1249 useless extension candidates. Maximal degree in co-relation 8762. Up to 1126 conditions per place. [2024-06-04 15:30:17,661 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 41 changer transitions 0/278 dead transitions. [2024-06-04 15:30:17,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 278 transitions, 3307 flow [2024-06-04 15:30:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:17,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-04 15:30:17,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-04 15:30:17,662 INFO L175 Difference]: Start difference. First operand has 283 places, 260 transitions, 2689 flow. Second operand 10 states and 126 transitions. [2024-06-04 15:30:17,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 278 transitions, 3307 flow [2024-06-04 15:30:17,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 278 transitions, 3135 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:17,978 INFO L231 Difference]: Finished difference. Result has 284 places, 261 transitions, 2623 flow [2024-06-04 15:30:17,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2623, PETRI_PLACES=284, PETRI_TRANSITIONS=261} [2024-06-04 15:30:17,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 15:30:17,979 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 261 transitions, 2623 flow [2024-06-04 15:30:17,979 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 15:30:17,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:17,979 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 15:30:17,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-04 15:30:17,979 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 15:30:17,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:17,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1913112806, now seen corresponding path program 2 times [2024-06-04 15:30:17,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:17,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080029393] [2024-06-04 15:30:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:17,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:19,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:19,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:19,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080029393] [2024-06-04 15:30:19,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080029393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:19,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:19,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:19,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437290653] [2024-06-04 15:30:19,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:19,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:19,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:19,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:19,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:19,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 261 transitions, 2623 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 15:30:19,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:19,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:19,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:19,806 INFO L124 PetriNetUnfolderBase]: 720/1256 cut-off events. [2024-06-04 15:30:19,806 INFO L125 PetriNetUnfolderBase]: For 136419/136419 co-relation queries the response was YES. [2024-06-04 15:30:19,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 1256 events. 720/1256 cut-off events. For 136419/136419 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6512 event pairs, 79 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 8731. Up to 1185 conditions per place. [2024-06-04 15:30:19,817 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 252 selfloop transitions, 25 changer transitions 0/279 dead transitions. [2024-06-04 15:30:19,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 279 transitions, 3240 flow [2024-06-04 15:30:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 15:30:19,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 15:30:19,818 INFO L175 Difference]: Start difference. First operand has 284 places, 261 transitions, 2623 flow. Second operand 10 states and 117 transitions. [2024-06-04 15:30:19,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 279 transitions, 3240 flow [2024-06-04 15:30:20,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 279 transitions, 3142 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:20,138 INFO L231 Difference]: Finished difference. Result has 287 places, 263 transitions, 2605 flow [2024-06-04 15:30:20,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2527, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2605, PETRI_PLACES=287, PETRI_TRANSITIONS=263} [2024-06-04 15:30:20,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-04 15:30:20,138 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 263 transitions, 2605 flow [2024-06-04 15:30:20,138 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 15:30:20,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:20,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:20,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-04 15:30:20,139 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 15:30:20,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1610686632, now seen corresponding path program 5 times [2024-06-04 15:30:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:20,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312962274] [2024-06-04 15:30:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:20,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:21,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:21,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312962274] [2024-06-04 15:30:21,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312962274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:21,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:21,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19825919] [2024-06-04 15:30:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:21,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:21,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:21,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 263 transitions, 2605 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 15:30:21,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:21,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:21,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:22,293 INFO L124 PetriNetUnfolderBase]: 716/1250 cut-off events. [2024-06-04 15:30:22,294 INFO L125 PetriNetUnfolderBase]: For 131366/131366 co-relation queries the response was YES. [2024-06-04 15:30:22,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 1250 events. 716/1250 cut-off events. For 131366/131366 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6474 event pairs, 68 based on Foata normal form. 2/1251 useless extension candidates. Maximal degree in co-relation 8507. Up to 1102 conditions per place. [2024-06-04 15:30:22,306 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 48 changer transitions 0/282 dead transitions. [2024-06-04 15:30:22,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 282 transitions, 3221 flow [2024-06-04 15:30:22,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:30:22,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:30:22,307 INFO L175 Difference]: Start difference. First operand has 287 places, 263 transitions, 2605 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:30:22,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 282 transitions, 3221 flow [2024-06-04 15:30:22,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 282 transitions, 3160 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-04 15:30:22,652 INFO L231 Difference]: Finished difference. Result has 291 places, 263 transitions, 2645 flow [2024-06-04 15:30:22,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2645, PETRI_PLACES=291, PETRI_TRANSITIONS=263} [2024-06-04 15:30:22,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-04 15:30:22,652 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 263 transitions, 2645 flow [2024-06-04 15:30:22,652 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 15:30:22,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:22,653 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 15:30:22,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-04 15:30:22,653 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 15:30:22,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:22,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2120187257, now seen corresponding path program 11 times [2024-06-04 15:30:22,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:22,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021622434] [2024-06-04 15:30:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:22,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:23,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:23,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021622434] [2024-06-04 15:30:23,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021622434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:23,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:23,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259492033] [2024-06-04 15:30:23,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:23,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:23,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:23,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:23,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:23,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 263 transitions, 2645 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 15:30:23,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:23,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:23,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:24,256 INFO L124 PetriNetUnfolderBase]: 763/1343 cut-off events. [2024-06-04 15:30:24,256 INFO L125 PetriNetUnfolderBase]: For 192522/192522 co-relation queries the response was YES. [2024-06-04 15:30:24,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10435 conditions, 1343 events. 763/1343 cut-off events. For 192522/192522 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7036 event pairs, 93 based on Foata normal form. 2/1344 useless extension candidates. Maximal degree in co-relation 10299. Up to 1116 conditions per place. [2024-06-04 15:30:24,269 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 244 selfloop transitions, 43 changer transitions 0/289 dead transitions. [2024-06-04 15:30:24,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 289 transitions, 3557 flow [2024-06-04 15:30:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:24,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:24,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-04 15:30:24,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-04 15:30:24,270 INFO L175 Difference]: Start difference. First operand has 291 places, 263 transitions, 2645 flow. Second operand 10 states and 132 transitions. [2024-06-04 15:30:24,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 289 transitions, 3557 flow [2024-06-04 15:30:24,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 289 transitions, 3416 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:24,754 INFO L231 Difference]: Finished difference. Result has 292 places, 265 transitions, 2636 flow [2024-06-04 15:30:24,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2636, PETRI_PLACES=292, PETRI_TRANSITIONS=265} [2024-06-04 15:30:24,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-04 15:30:24,755 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 265 transitions, 2636 flow [2024-06-04 15:30:24,755 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 15:30:24,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:24,755 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 15:30:24,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-04 15:30:24,755 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 15:30:24,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1913103506, now seen corresponding path program 3 times [2024-06-04 15:30:24,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:24,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517725291] [2024-06-04 15:30:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:24,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:26,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517725291] [2024-06-04 15:30:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517725291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:26,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:26,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374833875] [2024-06-04 15:30:26,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:26,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:26,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 265 transitions, 2636 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 15:30:26,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:26,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:26,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:26,639 INFO L124 PetriNetUnfolderBase]: 767/1351 cut-off events. [2024-06-04 15:30:26,640 INFO L125 PetriNetUnfolderBase]: For 196493/196493 co-relation queries the response was YES. [2024-06-04 15:30:26,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 1351 events. 767/1351 cut-off events. For 196493/196493 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7111 event pairs, 96 based on Foata normal form. 2/1352 useless extension candidates. Maximal degree in co-relation 10350. Up to 1271 conditions per place. [2024-06-04 15:30:26,652 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 253 selfloop transitions, 27 changer transitions 0/282 dead transitions. [2024-06-04 15:30:26,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 282 transitions, 3248 flow [2024-06-04 15:30:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-04 15:30:26,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-04 15:30:26,653 INFO L175 Difference]: Start difference. First operand has 292 places, 265 transitions, 2636 flow. Second operand 10 states and 117 transitions. [2024-06-04 15:30:26,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 282 transitions, 3248 flow [2024-06-04 15:30:27,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 282 transitions, 3174 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-04 15:30:27,103 INFO L231 Difference]: Finished difference. Result has 296 places, 266 transitions, 2632 flow [2024-06-04 15:30:27,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2632, PETRI_PLACES=296, PETRI_TRANSITIONS=266} [2024-06-04 15:30:27,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-04 15:30:27,104 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 266 transitions, 2632 flow [2024-06-04 15:30:27,104 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 15:30:27,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:27,104 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 15:30:27,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-04 15:30:27,104 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 15:30:27,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:27,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1264758433, now seen corresponding path program 12 times [2024-06-04 15:30:27,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:27,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754910006] [2024-06-04 15:30:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:27,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:28,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:28,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754910006] [2024-06-04 15:30:28,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754910006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:28,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:28,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:28,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927538514] [2024-06-04 15:30:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:28,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:28,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:28,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:28,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:28,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 266 transitions, 2632 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 15:30:28,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:28,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:28,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:28,777 INFO L124 PetriNetUnfolderBase]: 755/1331 cut-off events. [2024-06-04 15:30:28,777 INFO L125 PetriNetUnfolderBase]: For 200767/200767 co-relation queries the response was YES. [2024-06-04 15:30:28,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9354 conditions, 1331 events. 755/1331 cut-off events. For 200767/200767 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7029 event pairs, 85 based on Foata normal form. 14/1344 useless extension candidates. Maximal degree in co-relation 9215. Up to 1183 conditions per place. [2024-06-04 15:30:28,787 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 250 selfloop transitions, 28 changer transitions 9/289 dead transitions. [2024-06-04 15:30:28,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 289 transitions, 3336 flow [2024-06-04 15:30:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-04 15:30:28,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-04 15:30:28,788 INFO L175 Difference]: Start difference. First operand has 296 places, 266 transitions, 2632 flow. Second operand 10 states and 127 transitions. [2024-06-04 15:30:28,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 289 transitions, 3336 flow [2024-06-04 15:30:29,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 289 transitions, 3276 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:29,222 INFO L231 Difference]: Finished difference. Result has 298 places, 264 transitions, 2617 flow [2024-06-04 15:30:29,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2617, PETRI_PLACES=298, PETRI_TRANSITIONS=264} [2024-06-04 15:30:29,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 15:30:29,222 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 264 transitions, 2617 flow [2024-06-04 15:30:29,222 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 15:30:29,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:29,222 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 15:30:29,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-04 15:30:29,223 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 15:30:29,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1920522116, now seen corresponding path program 4 times [2024-06-04 15:30:29,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:29,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448941699] [2024-06-04 15:30:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:29,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:30,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:30,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:30,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448941699] [2024-06-04 15:30:30,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448941699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:30,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:30,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:30,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199161655] [2024-06-04 15:30:30,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:30,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:30,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:30,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:30,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:30,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 264 transitions, 2617 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 15:30:30,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:30,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:30,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:31,141 INFO L124 PetriNetUnfolderBase]: 723/1271 cut-off events. [2024-06-04 15:30:31,141 INFO L125 PetriNetUnfolderBase]: For 152079/152079 co-relation queries the response was YES. [2024-06-04 15:30:31,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9075 conditions, 1271 events. 723/1271 cut-off events. For 152079/152079 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6680 event pairs, 79 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 8935. Up to 1191 conditions per place. [2024-06-04 15:30:31,153 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 253 selfloop transitions, 27 changer transitions 0/282 dead transitions. [2024-06-04 15:30:31,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 282 transitions, 3237 flow [2024-06-04 15:30:31,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-04 15:30:31,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:30:31,154 INFO L175 Difference]: Start difference. First operand has 298 places, 264 transitions, 2617 flow. Second operand 10 states and 120 transitions. [2024-06-04 15:30:31,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 282 transitions, 3237 flow [2024-06-04 15:30:31,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 282 transitions, 3165 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:31,611 INFO L231 Difference]: Finished difference. Result has 300 places, 265 transitions, 2617 flow [2024-06-04 15:30:31,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2617, PETRI_PLACES=300, PETRI_TRANSITIONS=265} [2024-06-04 15:30:31,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-04 15:30:31,611 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 265 transitions, 2617 flow [2024-06-04 15:30:31,611 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 15:30:31,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:31,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:31,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-04 15:30:31,612 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 15:30:31,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1920731862, now seen corresponding path program 6 times [2024-06-04 15:30:31,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:31,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614129840] [2024-06-04 15:30:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:31,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:33,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:33,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614129840] [2024-06-04 15:30:33,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614129840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:33,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:33,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:33,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433762134] [2024-06-04 15:30:33,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:33,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:33,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:33,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:33,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:33,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:33,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 265 transitions, 2617 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 15:30:33,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:33,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:33,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:33,959 INFO L124 PetriNetUnfolderBase]: 729/1281 cut-off events. [2024-06-04 15:30:33,959 INFO L125 PetriNetUnfolderBase]: For 155217/155217 co-relation queries the response was YES. [2024-06-04 15:30:33,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9130 conditions, 1281 events. 729/1281 cut-off events. For 155217/155217 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6743 event pairs, 85 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 8989. Up to 1182 conditions per place. [2024-06-04 15:30:33,970 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 33 changer transitions 0/286 dead transitions. [2024-06-04 15:30:33,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 286 transitions, 3265 flow [2024-06-04 15:30:33,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:33,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:33,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:30:33,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:30:33,972 INFO L175 Difference]: Start difference. First operand has 300 places, 265 transitions, 2617 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:30:33,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 286 transitions, 3265 flow [2024-06-04 15:30:34,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 286 transitions, 3203 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:34,456 INFO L231 Difference]: Finished difference. Result has 303 places, 267 transitions, 2654 flow [2024-06-04 15:30:34,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2654, PETRI_PLACES=303, PETRI_TRANSITIONS=267} [2024-06-04 15:30:34,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-04 15:30:34,457 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 267 transitions, 2654 flow [2024-06-04 15:30:34,457 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 15:30:34,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:34,457 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 15:30:34,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-04 15:30:34,458 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 15:30:34,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1920530052, now seen corresponding path program 7 times [2024-06-04 15:30:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088115255] [2024-06-04 15:30:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:34,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:35,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:35,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088115255] [2024-06-04 15:30:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088115255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:35,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:35,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:35,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873902007] [2024-06-04 15:30:35,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:35,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:35,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:35,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:35,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:36,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:36,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 267 transitions, 2654 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 15:30:36,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:36,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:36,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:36,737 INFO L124 PetriNetUnfolderBase]: 777/1365 cut-off events. [2024-06-04 15:30:36,737 INFO L125 PetriNetUnfolderBase]: For 158646/158646 co-relation queries the response was YES. [2024-06-04 15:30:36,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9650 conditions, 1365 events. 777/1365 cut-off events. For 158646/158646 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7274 event pairs, 101 based on Foata normal form. 2/1366 useless extension candidates. Maximal degree in co-relation 9508. Up to 1269 conditions per place. [2024-06-04 15:30:36,749 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 269 selfloop transitions, 34 changer transitions 0/305 dead transitions. [2024-06-04 15:30:36,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 305 transitions, 3560 flow [2024-06-04 15:30:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:30:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:30:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:30:36,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:30:36,750 INFO L175 Difference]: Start difference. First operand has 303 places, 267 transitions, 2654 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:30:36,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 305 transitions, 3560 flow [2024-06-04 15:30:37,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 305 transitions, 3442 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:37,252 INFO L231 Difference]: Finished difference. Result has 312 places, 286 transitions, 2915 flow [2024-06-04 15:30:37,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2915, PETRI_PLACES=312, PETRI_TRANSITIONS=286} [2024-06-04 15:30:37,252 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-04 15:30:37,252 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 286 transitions, 2915 flow [2024-06-04 15:30:37,252 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 15:30:37,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:37,253 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 15:30:37,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-04 15:30:37,253 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 15:30:37,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash -447691430, now seen corresponding path program 5 times [2024-06-04 15:30:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:37,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511419432] [2024-06-04 15:30:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:37,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511419432] [2024-06-04 15:30:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511419432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:38,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:38,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:38,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557858694] [2024-06-04 15:30:38,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:38,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:38,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:38,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:38,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:38,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:38,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 286 transitions, 2915 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 15:30:38,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:38,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:38,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:39,157 INFO L124 PetriNetUnfolderBase]: 781/1373 cut-off events. [2024-06-04 15:30:39,157 INFO L125 PetriNetUnfolderBase]: For 162310/162310 co-relation queries the response was YES. [2024-06-04 15:30:39,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9788 conditions, 1373 events. 781/1373 cut-off events. For 162310/162310 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7346 event pairs, 81 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 9639. Up to 1247 conditions per place. [2024-06-04 15:30:39,172 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 262 selfloop transitions, 40 changer transitions 0/304 dead transitions. [2024-06-04 15:30:39,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 304 transitions, 3581 flow [2024-06-04 15:30:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-04 15:30:39,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-04 15:30:39,173 INFO L175 Difference]: Start difference. First operand has 312 places, 286 transitions, 2915 flow. Second operand 10 states and 122 transitions. [2024-06-04 15:30:39,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 304 transitions, 3581 flow [2024-06-04 15:30:39,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 304 transitions, 3535 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-04 15:30:39,700 INFO L231 Difference]: Finished difference. Result has 319 places, 287 transitions, 2969 flow [2024-06-04 15:30:39,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2969, PETRI_PLACES=319, PETRI_TRANSITIONS=287} [2024-06-04 15:30:39,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-04 15:30:39,701 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 287 transitions, 2969 flow [2024-06-04 15:30:39,701 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 15:30:39,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:39,701 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 15:30:39,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-04 15:30:39,701 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 15:30:39,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:39,702 INFO L85 PathProgramCache]: Analyzing trace with hash -447699366, now seen corresponding path program 8 times [2024-06-04 15:30:39,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:39,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265739667] [2024-06-04 15:30:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:39,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:41,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:41,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265739667] [2024-06-04 15:30:41,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265739667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:41,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:41,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:41,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893077780] [2024-06-04 15:30:41,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:41,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:41,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:41,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:41,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:41,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 287 transitions, 2969 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 15:30:41,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:41,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:41,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:42,492 INFO L124 PetriNetUnfolderBase]: 787/1383 cut-off events. [2024-06-04 15:30:42,492 INFO L125 PetriNetUnfolderBase]: For 165621/165621 co-relation queries the response was YES. [2024-06-04 15:30:42,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9901 conditions, 1383 events. 787/1383 cut-off events. For 165621/165621 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7399 event pairs, 82 based on Foata normal form. 2/1384 useless extension candidates. Maximal degree in co-relation 9751. Up to 1108 conditions per place. [2024-06-04 15:30:42,506 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 72 changer transitions 0/311 dead transitions. [2024-06-04 15:30:42,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 311 transitions, 4067 flow [2024-06-04 15:30:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:42,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:30:42,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:30:42,507 INFO L175 Difference]: Start difference. First operand has 319 places, 287 transitions, 2969 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:30:42,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 311 transitions, 4067 flow [2024-06-04 15:30:43,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 311 transitions, 3977 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:43,024 INFO L231 Difference]: Finished difference. Result has 322 places, 289 transitions, 3052 flow [2024-06-04 15:30:43,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3052, PETRI_PLACES=322, PETRI_TRANSITIONS=289} [2024-06-04 15:30:43,025 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-04 15:30:43,025 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 289 transitions, 3052 flow [2024-06-04 15:30:43,025 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 15:30:43,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:43,025 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 15:30:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-04 15:30:43,026 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 15:30:43,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:43,026 INFO L85 PathProgramCache]: Analyzing trace with hash -447901176, now seen corresponding path program 9 times [2024-06-04 15:30:43,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:43,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909537516] [2024-06-04 15:30:43,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:43,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909537516] [2024-06-04 15:30:44,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909537516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:44,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:44,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:44,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683686766] [2024-06-04 15:30:44,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:44,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:44,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:44,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:44,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:44,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 289 transitions, 3052 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 15:30:44,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:44,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:44,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:45,555 INFO L124 PetriNetUnfolderBase]: 783/1377 cut-off events. [2024-06-04 15:30:45,555 INFO L125 PetriNetUnfolderBase]: For 159619/159619 co-relation queries the response was YES. [2024-06-04 15:30:45,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9777 conditions, 1377 events. 783/1377 cut-off events. For 159619/159619 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7403 event pairs, 74 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 9626. Up to 1186 conditions per place. [2024-06-04 15:30:45,571 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 57 changer transitions 0/309 dead transitions. [2024-06-04 15:30:45,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 309 transitions, 3726 flow [2024-06-04 15:30:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:45,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:30:45,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:30:45,572 INFO L175 Difference]: Start difference. First operand has 322 places, 289 transitions, 3052 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:30:45,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 309 transitions, 3726 flow [2024-06-04 15:30:46,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 309 transitions, 3558 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-04 15:30:46,084 INFO L231 Difference]: Finished difference. Result has 324 places, 289 transitions, 3003 flow [2024-06-04 15:30:46,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3003, PETRI_PLACES=324, PETRI_TRANSITIONS=289} [2024-06-04 15:30:46,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-04 15:30:46,084 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 289 transitions, 3003 flow [2024-06-04 15:30:46,084 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 15:30:46,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:46,085 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 15:30:46,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-04 15:30:46,085 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 15:30:46,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:46,085 INFO L85 PathProgramCache]: Analyzing trace with hash -447906911, now seen corresponding path program 13 times [2024-06-04 15:30:46,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:46,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157638160] [2024-06-04 15:30:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:46,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:47,349 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 15:30:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157638160] [2024-06-04 15:30:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157638160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:47,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:47,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:47,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882584868] [2024-06-04 15:30:47,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:47,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:47,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:47,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:47,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 289 transitions, 3003 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 15:30:47,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:47,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:47,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:48,001 INFO L124 PetriNetUnfolderBase]: 780/1372 cut-off events. [2024-06-04 15:30:48,002 INFO L125 PetriNetUnfolderBase]: For 152452/152452 co-relation queries the response was YES. [2024-06-04 15:30:48,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9515 conditions, 1372 events. 780/1372 cut-off events. For 152452/152452 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7333 event pairs, 89 based on Foata normal form. 2/1373 useless extension candidates. Maximal degree in co-relation 9363. Up to 1246 conditions per place. [2024-06-04 15:30:48,016 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 258 selfloop transitions, 46 changer transitions 0/306 dead transitions. [2024-06-04 15:30:48,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 306 transitions, 3657 flow [2024-06-04 15:30:48,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:48,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:30:48,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:30:48,017 INFO L175 Difference]: Start difference. First operand has 324 places, 289 transitions, 3003 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:30:48,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 306 transitions, 3657 flow [2024-06-04 15:30:48,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 306 transitions, 3487 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-04 15:30:48,542 INFO L231 Difference]: Finished difference. Result has 324 places, 289 transitions, 2929 flow [2024-06-04 15:30:48,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2929, PETRI_PLACES=324, PETRI_TRANSITIONS=289} [2024-06-04 15:30:48,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-04 15:30:48,543 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 289 transitions, 2929 flow [2024-06-04 15:30:48,543 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 15:30:48,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:48,543 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 15:30:48,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-04 15:30:48,543 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 15:30:48,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:48,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1746617509, now seen corresponding path program 14 times [2024-06-04 15:30:48,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850200936] [2024-06-04 15:30:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:48,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:30:49,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:49,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850200936] [2024-06-04 15:30:49,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850200936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:49,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:49,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:49,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706863464] [2024-06-04 15:30:49,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:49,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:49,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:49,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:49,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:49,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:49,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 289 transitions, 2929 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 15:30:49,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:49,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:49,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:50,447 INFO L124 PetriNetUnfolderBase]: 813/1439 cut-off events. [2024-06-04 15:30:50,448 INFO L125 PetriNetUnfolderBase]: For 205845/205845 co-relation queries the response was YES. [2024-06-04 15:30:50,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10706 conditions, 1439 events. 813/1439 cut-off events. For 205845/205845 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7719 event pairs, 118 based on Foata normal form. 2/1440 useless extension candidates. Maximal degree in co-relation 10553. Up to 1210 conditions per place. [2024-06-04 15:30:50,463 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 48 changer transitions 0/311 dead transitions. [2024-06-04 15:30:50,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 311 transitions, 3847 flow [2024-06-04 15:30:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:50,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:30:50,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:30:50,464 INFO L175 Difference]: Start difference. First operand has 324 places, 289 transitions, 2929 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:30:50,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 311 transitions, 3847 flow [2024-06-04 15:30:51,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 311 transitions, 3745 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:30:51,042 INFO L231 Difference]: Finished difference. Result has 325 places, 290 transitions, 2949 flow [2024-06-04 15:30:51,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2827, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2949, PETRI_PLACES=325, PETRI_TRANSITIONS=290} [2024-06-04 15:30:51,042 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-04 15:30:51,042 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 290 transitions, 2949 flow [2024-06-04 15:30:51,042 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 15:30:51,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:51,043 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 15:30:51,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-04 15:30:51,043 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 15:30:51,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:51,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2008692826, now seen corresponding path program 6 times [2024-06-04 15:30:51,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:51,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882813222] [2024-06-04 15:30:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:52,643 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 15:30:52,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:52,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882813222] [2024-06-04 15:30:52,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882813222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:52,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:52,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:30:52,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972850219] [2024-06-04 15:30:52,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:52,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:30:52,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:52,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:30:52,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:30:52,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:52,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 290 transitions, 2949 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 15:30:52,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:52,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:52,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:53,139 INFO L124 PetriNetUnfolderBase]: 817/1447 cut-off events. [2024-06-04 15:30:53,140 INFO L125 PetriNetUnfolderBase]: For 210101/210101 co-relation queries the response was YES. [2024-06-04 15:30:53,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10807 conditions, 1447 events. 817/1447 cut-off events. For 210101/210101 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 7788 event pairs, 132 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 10653. Up to 1399 conditions per place. [2024-06-04 15:30:53,155 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 284 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2024-06-04 15:30:53,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 304 transitions, 3603 flow [2024-06-04 15:30:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:30:53,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:30:53,156 INFO L175 Difference]: Start difference. First operand has 325 places, 290 transitions, 2949 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:30:53,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 304 transitions, 3603 flow [2024-06-04 15:30:53,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 304 transitions, 3392 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-04 15:30:53,631 INFO L231 Difference]: Finished difference. Result has 324 places, 291 transitions, 2796 flow [2024-06-04 15:30:53,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2796, PETRI_PLACES=324, PETRI_TRANSITIONS=291} [2024-06-04 15:30:53,632 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-04 15:30:53,632 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 291 transitions, 2796 flow [2024-06-04 15:30:53,632 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 15:30:53,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:53,632 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 15:30:53,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-04 15:30:53,632 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 15:30:53,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash 130899178, now seen corresponding path program 7 times [2024-06-04 15:30:53,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:53,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574481559] [2024-06-04 15:30:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:53,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:55,142 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 15:30:55,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:55,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574481559] [2024-06-04 15:30:55,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574481559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:55,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:55,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:55,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132326461] [2024-06-04 15:30:55,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:55,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:55,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:55,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:55,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 291 transitions, 2796 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 15:30:55,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:55,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:55,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:55,794 INFO L124 PetriNetUnfolderBase]: 821/1455 cut-off events. [2024-06-04 15:30:55,794 INFO L125 PetriNetUnfolderBase]: For 213999/213999 co-relation queries the response was YES. [2024-06-04 15:30:55,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10530 conditions, 1455 events. 821/1455 cut-off events. For 213999/213999 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7863 event pairs, 124 based on Foata normal form. 2/1456 useless extension candidates. Maximal degree in co-relation 10380. Up to 1366 conditions per place. [2024-06-04 15:30:55,809 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 273 selfloop transitions, 30 changer transitions 0/305 dead transitions. [2024-06-04 15:30:55,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 305 transitions, 3454 flow [2024-06-04 15:30:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:30:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:30:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-04 15:30:55,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-04 15:30:55,810 INFO L175 Difference]: Start difference. First operand has 324 places, 291 transitions, 2796 flow. Second operand 10 states and 114 transitions. [2024-06-04 15:30:55,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 305 transitions, 3454 flow [2024-06-04 15:30:56,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 305 transitions, 3406 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:56,565 INFO L231 Difference]: Finished difference. Result has 326 places, 292 transitions, 2832 flow [2024-06-04 15:30:56,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2748, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2832, PETRI_PLACES=326, PETRI_TRANSITIONS=292} [2024-06-04 15:30:56,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-04 15:30:56,565 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 292 transitions, 2832 flow [2024-06-04 15:30:56,565 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 15:30:56,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:56,565 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 15:30:56,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-04 15:30:56,565 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 15:30:56,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:56,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2008684890, now seen corresponding path program 10 times [2024-06-04 15:30:56,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:56,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132991275] [2024-06-04 15:30:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:30:57,748 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 15:30:57,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:30:57,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132991275] [2024-06-04 15:30:57,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132991275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:30:57,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:30:57,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:30:57,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486084915] [2024-06-04 15:30:57,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:30:57,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:30:57,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:30:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:30:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:30:57,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:30:57,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 292 transitions, 2832 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 15:30:57,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:30:57,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:30:57,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:30:58,430 INFO L124 PetriNetUnfolderBase]: 827/1465 cut-off events. [2024-06-04 15:30:58,431 INFO L125 PetriNetUnfolderBase]: For 217953/217953 co-relation queries the response was YES. [2024-06-04 15:30:58,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10637 conditions, 1465 events. 827/1465 cut-off events. For 217953/217953 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7920 event pairs, 127 based on Foata normal form. 2/1466 useless extension candidates. Maximal degree in co-relation 10486. Up to 1362 conditions per place. [2024-06-04 15:30:58,447 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 277 selfloop transitions, 31 changer transitions 0/310 dead transitions. [2024-06-04 15:30:58,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 310 transitions, 3726 flow [2024-06-04 15:30:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:30:58,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:30:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:30:58,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:30:58,448 INFO L175 Difference]: Start difference. First operand has 326 places, 292 transitions, 2832 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:30:58,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 310 transitions, 3726 flow [2024-06-04 15:30:59,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 310 transitions, 3652 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-04 15:30:59,114 INFO L231 Difference]: Finished difference. Result has 329 places, 294 transitions, 2851 flow [2024-06-04 15:30:59,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2851, PETRI_PLACES=329, PETRI_TRANSITIONS=294} [2024-06-04 15:30:59,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-04 15:30:59,114 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 294 transitions, 2851 flow [2024-06-04 15:30:59,114 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 15:30:59,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:30:59,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:30:59,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-04 15:30:59,115 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 15:30:59,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:30:59,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1428028902, now seen corresponding path program 11 times [2024-06-04 15:30:59,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:30:59,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281794243] [2024-06-04 15:30:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:30:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:30:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:00,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:00,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281794243] [2024-06-04 15:31:00,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281794243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:00,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:00,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:00,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785747631] [2024-06-04 15:31:00,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:00,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:00,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:00,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 294 transitions, 2851 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 15:31:00,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:00,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:00,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:01,234 INFO L124 PetriNetUnfolderBase]: 833/1475 cut-off events. [2024-06-04 15:31:01,234 INFO L125 PetriNetUnfolderBase]: For 222661/222661 co-relation queries the response was YES. [2024-06-04 15:31:01,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10705 conditions, 1475 events. 833/1475 cut-off events. For 222661/222661 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8002 event pairs, 116 based on Foata normal form. 2/1476 useless extension candidates. Maximal degree in co-relation 10553. Up to 1305 conditions per place. [2024-06-04 15:31:01,248 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 263 selfloop transitions, 48 changer transitions 0/313 dead transitions. [2024-06-04 15:31:01,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 313 transitions, 3551 flow [2024-06-04 15:31:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:01,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:31:01,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:31:01,249 INFO L175 Difference]: Start difference. First operand has 329 places, 294 transitions, 2851 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:31:01,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 313 transitions, 3551 flow [2024-06-04 15:31:01,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 313 transitions, 3473 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:01,845 INFO L231 Difference]: Finished difference. Result has 331 places, 297 transitions, 2910 flow [2024-06-04 15:31:01,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2910, PETRI_PLACES=331, PETRI_TRANSITIONS=297} [2024-06-04 15:31:01,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-04 15:31:01,845 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 297 transitions, 2910 flow [2024-06-04 15:31:01,845 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 15:31:01,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:01,845 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 15:31:01,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-04 15:31:01,846 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 15:31:01,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2008483080, now seen corresponding path program 12 times [2024-06-04 15:31:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:01,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849366245] [2024-06-04 15:31:01,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:01,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:03,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:03,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849366245] [2024-06-04 15:31:03,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849366245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:03,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:03,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:03,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894516424] [2024-06-04 15:31:03,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:03,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:03,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:03,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:03,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:03,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 297 transitions, 2910 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 15:31:03,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:03,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:03,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:03,933 INFO L124 PetriNetUnfolderBase]: 829/1469 cut-off events. [2024-06-04 15:31:03,933 INFO L125 PetriNetUnfolderBase]: For 215202/215202 co-relation queries the response was YES. [2024-06-04 15:31:03,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10541 conditions, 1469 events. 829/1469 cut-off events. For 215202/215202 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7980 event pairs, 129 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 10388. Up to 1394 conditions per place. [2024-06-04 15:31:03,949 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 285 selfloop transitions, 25 changer transitions 0/312 dead transitions. [2024-06-04 15:31:03,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 312 transitions, 3572 flow [2024-06-04 15:31:03,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:31:03,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:31:03,950 INFO L175 Difference]: Start difference. First operand has 331 places, 297 transitions, 2910 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:31:03,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 312 transitions, 3572 flow [2024-06-04 15:31:04,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 312 transitions, 3470 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-04 15:31:04,582 INFO L231 Difference]: Finished difference. Result has 336 places, 297 transitions, 2863 flow [2024-06-04 15:31:04,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2863, PETRI_PLACES=336, PETRI_TRANSITIONS=297} [2024-06-04 15:31:04,582 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 15:31:04,582 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 297 transitions, 2863 flow [2024-06-04 15:31:04,582 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 15:31:04,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:04,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:04,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-04 15:31:04,583 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 15:31:04,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:04,583 INFO L85 PathProgramCache]: Analyzing trace with hash 125177167, now seen corresponding path program 15 times [2024-06-04 15:31:04,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:04,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662100705] [2024-06-04 15:31:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:04,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:05,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:05,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662100705] [2024-06-04 15:31:05,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662100705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:05,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:05,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:05,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320636627] [2024-06-04 15:31:05,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:05,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:05,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:05,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:05,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 297 transitions, 2863 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 15:31:05,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:05,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:05,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:06,492 INFO L124 PetriNetUnfolderBase]: 836/1482 cut-off events. [2024-06-04 15:31:06,492 INFO L125 PetriNetUnfolderBase]: For 219236/219236 co-relation queries the response was YES. [2024-06-04 15:31:06,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10578 conditions, 1482 events. 836/1482 cut-off events. For 219236/219236 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8033 event pairs, 129 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 10424. Up to 1346 conditions per place. [2024-06-04 15:31:06,508 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 263 selfloop transitions, 50 changer transitions 0/315 dead transitions. [2024-06-04 15:31:06,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 315 transitions, 3566 flow [2024-06-04 15:31:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:31:06,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:31:06,509 INFO L175 Difference]: Start difference. First operand has 336 places, 297 transitions, 2863 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:31:06,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 315 transitions, 3566 flow [2024-06-04 15:31:07,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 315 transitions, 3491 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:31:07,202 INFO L231 Difference]: Finished difference. Result has 337 places, 300 transitions, 2931 flow [2024-06-04 15:31:07,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2931, PETRI_PLACES=337, PETRI_TRANSITIONS=300} [2024-06-04 15:31:07,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-04 15:31:07,202 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 300 transitions, 2931 flow [2024-06-04 15:31:07,202 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 15:31:07,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:07,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:07,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-04 15:31:07,203 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 15:31:07,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2031549586, now seen corresponding path program 8 times [2024-06-04 15:31:07,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:07,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308670866] [2024-06-04 15:31:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:07,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:08,231 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 15:31:08,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:08,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308670866] [2024-06-04 15:31:08,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308670866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:08,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:08,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:08,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486510760] [2024-06-04 15:31:08,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:08,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:08,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:08,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:08,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:08,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:08,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 300 transitions, 2931 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 15:31:08,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:08,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:08,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:08,766 INFO L124 PetriNetUnfolderBase]: 840/1490 cut-off events. [2024-06-04 15:31:08,766 INFO L125 PetriNetUnfolderBase]: For 223400/223400 co-relation queries the response was YES. [2024-06-04 15:31:08,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10713 conditions, 1490 events. 840/1490 cut-off events. For 223400/223400 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8124 event pairs, 139 based on Foata normal form. 2/1491 useless extension candidates. Maximal degree in co-relation 10558. Up to 1446 conditions per place. [2024-06-04 15:31:08,782 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 296 selfloop transitions, 15 changer transitions 0/313 dead transitions. [2024-06-04 15:31:08,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 313 transitions, 3599 flow [2024-06-04 15:31:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:08,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-04 15:31:08,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-04 15:31:08,783 INFO L175 Difference]: Start difference. First operand has 337 places, 300 transitions, 2931 flow. Second operand 10 states and 106 transitions. [2024-06-04 15:31:08,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 313 transitions, 3599 flow [2024-06-04 15:31:09,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 313 transitions, 3473 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:09,416 INFO L231 Difference]: Finished difference. Result has 338 places, 301 transitions, 2861 flow [2024-06-04 15:31:09,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2861, PETRI_PLACES=338, PETRI_TRANSITIONS=301} [2024-06-04 15:31:09,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-04 15:31:09,417 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 301 transitions, 2861 flow [2024-06-04 15:31:09,417 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 15:31:09,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:09,417 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 15:31:09,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-04 15:31:09,417 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 15:31:09,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:09,418 INFO L85 PathProgramCache]: Analyzing trace with hash 324838588, now seen corresponding path program 9 times [2024-06-04 15:31:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513776513] [2024-06-04 15:31:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:09,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:11,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:11,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513776513] [2024-06-04 15:31:11,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513776513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:11,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:11,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32913161] [2024-06-04 15:31:11,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:11,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:11,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:11,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:11,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:11,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 301 transitions, 2861 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 15:31:11,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:11,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:11,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:11,952 INFO L124 PetriNetUnfolderBase]: 844/1498 cut-off events. [2024-06-04 15:31:11,953 INFO L125 PetriNetUnfolderBase]: For 227655/227655 co-relation queries the response was YES. [2024-06-04 15:31:11,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10674 conditions, 1498 events. 844/1498 cut-off events. For 227655/227655 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8187 event pairs, 140 based on Foata normal form. 2/1499 useless extension candidates. Maximal degree in co-relation 10519. Up to 1429 conditions per place. [2024-06-04 15:31:11,968 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 25 changer transitions 0/316 dead transitions. [2024-06-04 15:31:11,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 316 transitions, 3549 flow [2024-06-04 15:31:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:11,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:11,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-04 15:31:11,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-04 15:31:11,969 INFO L175 Difference]: Start difference. First operand has 338 places, 301 transitions, 2861 flow. Second operand 10 states and 116 transitions. [2024-06-04 15:31:11,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 316 transitions, 3549 flow [2024-06-04 15:31:12,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 316 transitions, 3503 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:12,589 INFO L231 Difference]: Finished difference. Result has 340 places, 302 transitions, 2893 flow [2024-06-04 15:31:12,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2893, PETRI_PLACES=340, PETRI_TRANSITIONS=302} [2024-06-04 15:31:12,590 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-04 15:31:12,590 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 302 transitions, 2893 flow [2024-06-04 15:31:12,590 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 15:31:12,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:12,590 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 15:31:12,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-04 15:31:12,590 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 15:31:12,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:12,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2030963252, now seen corresponding path program 10 times [2024-06-04 15:31:12,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:12,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000915929] [2024-06-04 15:31:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:12,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:13,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:13,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:13,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000915929] [2024-06-04 15:31:13,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000915929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:13,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:13,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:13,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086798037] [2024-06-04 15:31:13,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:13,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:13,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:13,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:13,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:13,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:13,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 302 transitions, 2893 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 15:31:13,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:13,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:13,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:14,442 INFO L124 PetriNetUnfolderBase]: 848/1506 cut-off events. [2024-06-04 15:31:14,443 INFO L125 PetriNetUnfolderBase]: For 231995/231995 co-relation queries the response was YES. [2024-06-04 15:31:14,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10777 conditions, 1506 events. 848/1506 cut-off events. For 231995/231995 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8268 event pairs, 146 based on Foata normal form. 2/1507 useless extension candidates. Maximal degree in co-relation 10621. Up to 1459 conditions per place. [2024-06-04 15:31:14,459 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 294 selfloop transitions, 19 changer transitions 0/315 dead transitions. [2024-06-04 15:31:14,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 315 transitions, 3573 flow [2024-06-04 15:31:14,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:14,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-04 15:31:14,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-04 15:31:14,460 INFO L175 Difference]: Start difference. First operand has 340 places, 302 transitions, 2893 flow. Second operand 10 states and 109 transitions. [2024-06-04 15:31:14,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 315 transitions, 3573 flow [2024-06-04 15:31:15,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 315 transitions, 3505 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:15,148 INFO L231 Difference]: Finished difference. Result has 342 places, 303 transitions, 2893 flow [2024-06-04 15:31:15,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2825, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2893, PETRI_PLACES=342, PETRI_TRANSITIONS=303} [2024-06-04 15:31:15,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-04 15:31:15,148 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 303 transitions, 2893 flow [2024-06-04 15:31:15,149 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 15:31:15,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:15,149 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 15:31:15,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-04 15:31:15,149 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 15:31:15,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash 324830652, now seen corresponding path program 13 times [2024-06-04 15:31:15,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:15,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156916544] [2024-06-04 15:31:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:15,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:16,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:16,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156916544] [2024-06-04 15:31:16,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156916544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:16,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:16,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:16,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042226386] [2024-06-04 15:31:16,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:16,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:16,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:16,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:16,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:16,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:16,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 303 transitions, 2893 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 15:31:16,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:16,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:16,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:17,312 INFO L124 PetriNetUnfolderBase]: 854/1516 cut-off events. [2024-06-04 15:31:17,312 INFO L125 PetriNetUnfolderBase]: For 235896/235896 co-relation queries the response was YES. [2024-06-04 15:31:17,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10816 conditions, 1516 events. 854/1516 cut-off events. For 235896/235896 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8338 event pairs, 140 based on Foata normal form. 2/1517 useless extension candidates. Maximal degree in co-relation 10659. Up to 1429 conditions per place. [2024-06-04 15:31:17,328 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 290 selfloop transitions, 29 changer transitions 0/321 dead transitions. [2024-06-04 15:31:17,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 321 transitions, 3601 flow [2024-06-04 15:31:17,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:17,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:31:17,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:31:17,329 INFO L175 Difference]: Start difference. First operand has 342 places, 303 transitions, 2893 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:31:17,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 321 transitions, 3601 flow [2024-06-04 15:31:17,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 321 transitions, 3543 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:17,981 INFO L231 Difference]: Finished difference. Result has 345 places, 305 transitions, 2926 flow [2024-06-04 15:31:17,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2926, PETRI_PLACES=345, PETRI_TRANSITIONS=305} [2024-06-04 15:31:17,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-04 15:31:17,982 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 305 transitions, 2926 flow [2024-06-04 15:31:17,982 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 15:31:17,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:17,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:17,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-04 15:31:17,982 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 15:31:17,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:17,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2030694482, now seen corresponding path program 11 times [2024-06-04 15:31:17,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:17,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804515907] [2024-06-04 15:31:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:17,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:19,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:19,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804515907] [2024-06-04 15:31:19,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804515907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:19,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:19,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:19,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125215685] [2024-06-04 15:31:19,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:19,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:19,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:19,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:19,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:19,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:19,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 305 transitions, 2926 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 15:31:19,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:19,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:19,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:19,880 INFO L124 PetriNetUnfolderBase]: 858/1524 cut-off events. [2024-06-04 15:31:19,880 INFO L125 PetriNetUnfolderBase]: For 240219/240219 co-relation queries the response was YES. [2024-06-04 15:31:19,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 1524 events. 858/1524 cut-off events. For 240219/240219 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8393 event pairs, 145 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 10762. Up to 1477 conditions per place. [2024-06-04 15:31:19,896 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 298 selfloop transitions, 18 changer transitions 0/318 dead transitions. [2024-06-04 15:31:19,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 318 transitions, 3612 flow [2024-06-04 15:31:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:31:19,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 15:31:19,896 INFO L175 Difference]: Start difference. First operand has 345 places, 305 transitions, 2926 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:31:19,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 318 transitions, 3612 flow [2024-06-04 15:31:20,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 318 transitions, 3541 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:20,567 INFO L231 Difference]: Finished difference. Result has 346 places, 306 transitions, 2923 flow [2024-06-04 15:31:20,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2923, PETRI_PLACES=346, PETRI_TRANSITIONS=306} [2024-06-04 15:31:20,567 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-04 15:31:20,567 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 306 transitions, 2923 flow [2024-06-04 15:31:20,568 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 15:31:20,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:20,568 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 15:31:20,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-04 15:31:20,568 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 15:31:20,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:20,569 INFO L85 PathProgramCache]: Analyzing trace with hash 125327052, now seen corresponding path program 14 times [2024-06-04 15:31:20,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:20,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799771451] [2024-06-04 15:31:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:20,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:21,981 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 15:31:21,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:21,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799771451] [2024-06-04 15:31:21,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799771451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:21,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:21,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:21,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445186816] [2024-06-04 15:31:21,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:21,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:21,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:21,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:21,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:22,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:22,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 306 transitions, 2923 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 15:31:22,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:22,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:22,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:22,581 INFO L124 PetriNetUnfolderBase]: 854/1518 cut-off events. [2024-06-04 15:31:22,581 INFO L125 PetriNetUnfolderBase]: For 232011/232011 co-relation queries the response was YES. [2024-06-04 15:31:22,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 1518 events. 854/1518 cut-off events. For 232011/232011 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8407 event pairs, 114 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 10505. Up to 1348 conditions per place. [2024-06-04 15:31:22,597 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 52 changer transitions 0/321 dead transitions. [2024-06-04 15:31:22,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 321 transitions, 3603 flow [2024-06-04 15:31:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:31:22,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:31:22,598 INFO L175 Difference]: Start difference. First operand has 346 places, 306 transitions, 2923 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:31:22,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 321 transitions, 3603 flow [2024-06-04 15:31:23,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 321 transitions, 3535 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:23,198 INFO L231 Difference]: Finished difference. Result has 349 places, 306 transitions, 2964 flow [2024-06-04 15:31:23,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2964, PETRI_PLACES=349, PETRI_TRANSITIONS=306} [2024-06-04 15:31:23,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-04 15:31:23,198 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 306 transitions, 2964 flow [2024-06-04 15:31:23,198 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 15:31:23,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:23,198 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 15:31:23,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-04 15:31:23,198 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 15:31:23,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:23,199 INFO L85 PathProgramCache]: Analyzing trace with hash -107478879, now seen corresponding path program 16 times [2024-06-04 15:31:23,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:23,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485531844] [2024-06-04 15:31:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:23,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:24,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:24,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485531844] [2024-06-04 15:31:24,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485531844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:24,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:24,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:24,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461131966] [2024-06-04 15:31:24,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:24,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:24,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:24,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:24,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:24,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:24,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 306 transitions, 2964 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 15:31:24,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:24,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:24,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:25,093 INFO L124 PetriNetUnfolderBase]: 874/1562 cut-off events. [2024-06-04 15:31:25,093 INFO L125 PetriNetUnfolderBase]: For 300386/300386 co-relation queries the response was YES. [2024-06-04 15:31:25,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10919 conditions, 1562 events. 874/1562 cut-off events. For 300386/300386 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8678 event pairs, 144 based on Foata normal form. 12/1573 useless extension candidates. Maximal degree in co-relation 10759. Up to 1456 conditions per place. [2024-06-04 15:31:25,110 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 21 changer transitions 6/326 dead transitions. [2024-06-04 15:31:25,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 326 transitions, 3703 flow [2024-06-04 15:31:25,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:31:25,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:31:25,111 INFO L175 Difference]: Start difference. First operand has 349 places, 306 transitions, 2964 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:31:25,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 326 transitions, 3703 flow [2024-06-04 15:31:25,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 326 transitions, 3601 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:25,730 INFO L231 Difference]: Finished difference. Result has 351 places, 306 transitions, 2920 flow [2024-06-04 15:31:25,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2920, PETRI_PLACES=351, PETRI_TRANSITIONS=306} [2024-06-04 15:31:25,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-04 15:31:25,730 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 306 transitions, 2920 flow [2024-06-04 15:31:25,730 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 15:31:25,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:25,731 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 15:31:25,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-04 15:31:25,731 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 15:31:25,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash -200274907, now seen corresponding path program 17 times [2024-06-04 15:31:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454386477] [2024-06-04 15:31:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:25,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:27,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454386477] [2024-06-04 15:31:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454386477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:27,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:27,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:27,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808522371] [2024-06-04 15:31:27,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:27,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:27,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:27,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:27,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 306 transitions, 2920 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 15:31:27,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:27,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:27,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:27,982 INFO L124 PetriNetUnfolderBase]: 872/1560 cut-off events. [2024-06-04 15:31:27,983 INFO L125 PetriNetUnfolderBase]: For 240228/240228 co-relation queries the response was YES. [2024-06-04 15:31:27,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10892 conditions, 1560 events. 872/1560 cut-off events. For 240228/240228 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8714 event pairs, 142 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 10731. Up to 1455 conditions per place. [2024-06-04 15:31:28,000 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 39 changer transitions 0/321 dead transitions. [2024-06-04 15:31:28,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 321 transitions, 3615 flow [2024-06-04 15:31:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:28,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:31:28,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 15:31:28,001 INFO L175 Difference]: Start difference. First operand has 351 places, 306 transitions, 2920 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:31:28,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 321 transitions, 3615 flow [2024-06-04 15:31:28,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 321 transitions, 3559 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:28,615 INFO L231 Difference]: Finished difference. Result has 353 places, 307 transitions, 2969 flow [2024-06-04 15:31:28,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2969, PETRI_PLACES=353, PETRI_TRANSITIONS=307} [2024-06-04 15:31:28,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-04 15:31:28,616 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 307 transitions, 2969 flow [2024-06-04 15:31:28,616 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 15:31:28,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:28,616 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 15:31:28,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-04 15:31:28,616 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 15:31:28,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:28,616 INFO L85 PathProgramCache]: Analyzing trace with hash 130891242, now seen corresponding path program 15 times [2024-06-04 15:31:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:28,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631037845] [2024-06-04 15:31:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:28,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:30,270 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 15:31:30,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:30,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631037845] [2024-06-04 15:31:30,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631037845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:30,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:30,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:30,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687370490] [2024-06-04 15:31:30,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:30,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:30,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:30,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:30,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:30,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 307 transitions, 2969 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 15:31:30,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:30,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:30,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:31,147 INFO L124 PetriNetUnfolderBase]: 868/1554 cut-off events. [2024-06-04 15:31:31,147 INFO L125 PetriNetUnfolderBase]: For 231019/231019 co-relation queries the response was YES. [2024-06-04 15:31:31,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10695 conditions, 1554 events. 868/1554 cut-off events. For 231019/231019 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8701 event pairs, 125 based on Foata normal form. 2/1555 useless extension candidates. Maximal degree in co-relation 10533. Up to 1384 conditions per place. [2024-06-04 15:31:31,163 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 49 changer transitions 0/322 dead transitions. [2024-06-04 15:31:31,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 322 transitions, 3651 flow [2024-06-04 15:31:31,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:31:31,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:31:31,164 INFO L175 Difference]: Start difference. First operand has 353 places, 307 transitions, 2969 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:31:31,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 322 transitions, 3651 flow [2024-06-04 15:31:31,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 322 transitions, 3542 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:31,767 INFO L231 Difference]: Finished difference. Result has 355 places, 307 transitions, 2963 flow [2024-06-04 15:31:31,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2963, PETRI_PLACES=355, PETRI_TRANSITIONS=307} [2024-06-04 15:31:31,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-04 15:31:31,768 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 307 transitions, 2963 flow [2024-06-04 15:31:31,768 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 15:31:31,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:31,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:31:31,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-04 15:31:31,768 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 15:31:31,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash 324623107, now seen corresponding path program 18 times [2024-06-04 15:31:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:31,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624912146] [2024-06-04 15:31:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:31,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:33,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:33,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624912146] [2024-06-04 15:31:33,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624912146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:33,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:33,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:33,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101422739] [2024-06-04 15:31:33,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:33,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:33,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:33,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:33,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:33,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:33,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 307 transitions, 2963 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 15:31:33,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:33,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:33,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:33,721 INFO L124 PetriNetUnfolderBase]: 871/1567 cut-off events. [2024-06-04 15:31:33,721 INFO L125 PetriNetUnfolderBase]: For 288983/288983 co-relation queries the response was YES. [2024-06-04 15:31:33,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9660 conditions, 1567 events. 871/1567 cut-off events. For 288983/288983 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8819 event pairs, 136 based on Foata normal form. 20/1586 useless extension candidates. Maximal degree in co-relation 9497. Up to 1419 conditions per place. [2024-06-04 15:31:33,738 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 24 changer transitions 9/329 dead transitions. [2024-06-04 15:31:33,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 329 transitions, 3748 flow [2024-06-04 15:31:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-04 15:31:33,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:31:33,739 INFO L175 Difference]: Start difference. First operand has 355 places, 307 transitions, 2963 flow. Second operand 11 states and 132 transitions. [2024-06-04 15:31:33,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 329 transitions, 3748 flow [2024-06-04 15:31:34,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 329 transitions, 3632 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-04 15:31:34,255 INFO L231 Difference]: Finished difference. Result has 356 places, 306 transitions, 2899 flow [2024-06-04 15:31:34,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2899, PETRI_PLACES=356, PETRI_TRANSITIONS=306} [2024-06-04 15:31:34,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-04 15:31:34,256 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 306 transitions, 2899 flow [2024-06-04 15:31:34,256 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 15:31:34,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:34,256 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 15:31:34,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-04 15:31:34,256 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 15:31:34,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:34,256 INFO L85 PathProgramCache]: Analyzing trace with hash 130683697, now seen corresponding path program 19 times [2024-06-04 15:31:34,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:34,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669899702] [2024-06-04 15:31:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:34,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:35,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:35,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669899702] [2024-06-04 15:31:35,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669899702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:35,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:35,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:35,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907134272] [2024-06-04 15:31:35,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:35,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:35,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:35,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:35,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:35,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:35,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 306 transitions, 2899 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 15:31:35,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:35,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:35,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:36,392 INFO L124 PetriNetUnfolderBase]: 854/1532 cut-off events. [2024-06-04 15:31:36,392 INFO L125 PetriNetUnfolderBase]: For 155981/155981 co-relation queries the response was YES. [2024-06-04 15:31:36,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 1532 events. 854/1532 cut-off events. For 155981/155981 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8612 event pairs, 129 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 9015. Up to 1402 conditions per place. [2024-06-04 15:31:36,408 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 279 selfloop transitions, 42 changer transitions 0/323 dead transitions. [2024-06-04 15:31:36,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 323 transitions, 3593 flow [2024-06-04 15:31:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:36,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:31:36,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 15:31:36,409 INFO L175 Difference]: Start difference. First operand has 356 places, 306 transitions, 2899 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:31:36,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 323 transitions, 3593 flow [2024-06-04 15:31:36,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 323 transitions, 3513 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:36,929 INFO L231 Difference]: Finished difference. Result has 359 places, 309 transitions, 2948 flow [2024-06-04 15:31:36,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2948, PETRI_PLACES=359, PETRI_TRANSITIONS=309} [2024-06-04 15:31:36,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 15:31:36,929 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 309 transitions, 2948 flow [2024-06-04 15:31:36,929 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 15:31:36,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:36,929 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 15:31:36,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-04 15:31:36,929 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 15:31:36,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1621968312, now seen corresponding path program 16 times [2024-06-04 15:31:36,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:36,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570675070] [2024-06-04 15:31:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:36,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:38,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:38,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570675070] [2024-06-04 15:31:38,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570675070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:38,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:38,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:38,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510651531] [2024-06-04 15:31:38,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:38,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:38,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:38,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:38,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:38,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:38,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 309 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 15:31:38,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:38,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:38,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:39,076 INFO L124 PetriNetUnfolderBase]: 850/1526 cut-off events. [2024-06-04 15:31:39,077 INFO L125 PetriNetUnfolderBase]: For 144127/144127 co-relation queries the response was YES. [2024-06-04 15:31:39,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8965 conditions, 1526 events. 850/1526 cut-off events. For 144127/144127 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8600 event pairs, 133 based on Foata normal form. 2/1527 useless extension candidates. Maximal degree in co-relation 8799. Up to 1439 conditions per place. [2024-06-04 15:31:39,094 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 295 selfloop transitions, 28 changer transitions 0/325 dead transitions. [2024-06-04 15:31:39,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 325 transitions, 3640 flow [2024-06-04 15:31:39,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:31:39,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:31:39,095 INFO L175 Difference]: Start difference. First operand has 359 places, 309 transitions, 2948 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:31:39,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 325 transitions, 3640 flow [2024-06-04 15:31:39,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 325 transitions, 3527 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-04 15:31:39,521 INFO L231 Difference]: Finished difference. Result has 359 places, 309 transitions, 2896 flow [2024-06-04 15:31:39,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2896, PETRI_PLACES=359, PETRI_TRANSITIONS=309} [2024-06-04 15:31:39,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 15:31:39,521 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 309 transitions, 2896 flow [2024-06-04 15:31:39,521 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 15:31:39,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:39,521 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 15:31:39,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-04 15:31:39,522 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 15:31:39,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:39,522 INFO L85 PathProgramCache]: Analyzing trace with hash 332247898, now seen corresponding path program 12 times [2024-06-04 15:31:39,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:39,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673848225] [2024-06-04 15:31:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:39,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:40,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:40,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:40,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673848225] [2024-06-04 15:31:40,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673848225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:40,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:40,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:40,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752223831] [2024-06-04 15:31:40,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:40,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:40,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:40,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:40,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:40,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:40,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 309 transitions, 2896 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 15:31:40,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:40,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:40,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:41,514 INFO L124 PetriNetUnfolderBase]: 854/1534 cut-off events. [2024-06-04 15:31:41,514 INFO L125 PetriNetUnfolderBase]: For 142068/142068 co-relation queries the response was YES. [2024-06-04 15:31:41,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8937 conditions, 1534 events. 854/1534 cut-off events. For 142068/142068 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8666 event pairs, 138 based on Foata normal form. 2/1535 useless extension candidates. Maximal degree in co-relation 8771. Up to 1483 conditions per place. [2024-06-04 15:31:41,532 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 302 selfloop transitions, 19 changer transitions 1/324 dead transitions. [2024-06-04 15:31:41,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 324 transitions, 3615 flow [2024-06-04 15:31:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:41,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-04 15:31:41,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-04 15:31:41,533 INFO L175 Difference]: Start difference. First operand has 359 places, 309 transitions, 2896 flow. Second operand 10 states and 112 transitions. [2024-06-04 15:31:41,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 324 transitions, 3615 flow [2024-06-04 15:31:41,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 324 transitions, 3509 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:31:41,968 INFO L231 Difference]: Finished difference. Result has 359 places, 310 transitions, 2870 flow [2024-06-04 15:31:41,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2870, PETRI_PLACES=359, PETRI_TRANSITIONS=310} [2024-06-04 15:31:41,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-04 15:31:41,969 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 310 transitions, 2870 flow [2024-06-04 15:31:41,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 15:31:41,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:41,969 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 15:31:41,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-04 15:31:41,969 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 15:31:41,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2015842666, now seen corresponding path program 13 times [2024-06-04 15:31:41,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:41,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203192874] [2024-06-04 15:31:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:41,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:43,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:43,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203192874] [2024-06-04 15:31:43,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203192874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:43,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:43,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:43,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601277839] [2024-06-04 15:31:43,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:43,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:43,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:43,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:43,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:43,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:43,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 310 transitions, 2870 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 15:31:43,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:43,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:43,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:43,832 INFO L124 PetriNetUnfolderBase]: 834/1494 cut-off events. [2024-06-04 15:31:43,832 INFO L125 PetriNetUnfolderBase]: For 144501/144501 co-relation queries the response was YES. [2024-06-04 15:31:43,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8761 conditions, 1494 events. 834/1494 cut-off events. For 144501/144501 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8383 event pairs, 130 based on Foata normal form. 2/1495 useless extension candidates. Maximal degree in co-relation 8593. Up to 1455 conditions per place. [2024-06-04 15:31:43,848 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 306 selfloop transitions, 16 changer transitions 0/324 dead transitions. [2024-06-04 15:31:43,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 324 transitions, 3584 flow [2024-06-04 15:31:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-04 15:31:43,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-04 15:31:43,850 INFO L175 Difference]: Start difference. First operand has 359 places, 310 transitions, 2870 flow. Second operand 10 states and 108 transitions. [2024-06-04 15:31:43,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 324 transitions, 3584 flow [2024-06-04 15:31:44,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 324 transitions, 3522 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:44,303 INFO L231 Difference]: Finished difference. Result has 363 places, 312 transitions, 2891 flow [2024-06-04 15:31:44,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2891, PETRI_PLACES=363, PETRI_TRANSITIONS=312} [2024-06-04 15:31:44,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-04 15:31:44,303 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 312 transitions, 2891 flow [2024-06-04 15:31:44,303 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 15:31:44,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:44,303 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 15:31:44,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-04 15:31:44,303 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 15:31:44,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash 332257198, now seen corresponding path program 14 times [2024-06-04 15:31:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:44,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670575305] [2024-06-04 15:31:44,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:44,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:45,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670575305] [2024-06-04 15:31:45,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670575305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:45,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:45,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575856998] [2024-06-04 15:31:45,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:45,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:45,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:45,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:45,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 312 transitions, 2891 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 15:31:45,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:45,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:45,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:46,214 INFO L124 PetriNetUnfolderBase]: 838/1502 cut-off events. [2024-06-04 15:31:46,214 INFO L125 PetriNetUnfolderBase]: For 146916/146916 co-relation queries the response was YES. [2024-06-04 15:31:46,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8819 conditions, 1502 events. 838/1502 cut-off events. For 146916/146916 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8465 event pairs, 130 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 8649. Up to 1451 conditions per place. [2024-06-04 15:31:46,228 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 19 changer transitions 0/326 dead transitions. [2024-06-04 15:31:46,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 326 transitions, 3603 flow [2024-06-04 15:31:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:46,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:31:46,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:31:46,229 INFO L175 Difference]: Start difference. First operand has 363 places, 312 transitions, 2891 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:31:46,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 326 transitions, 3603 flow [2024-06-04 15:31:46,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 326 transitions, 3548 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-04 15:31:46,705 INFO L231 Difference]: Finished difference. Result has 366 places, 313 transitions, 2912 flow [2024-06-04 15:31:46,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2836, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2912, PETRI_PLACES=366, PETRI_TRANSITIONS=313} [2024-06-04 15:31:46,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-04 15:31:46,705 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 313 transitions, 2912 flow [2024-06-04 15:31:46,705 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 15:31:46,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:46,706 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 15:31:46,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-04 15:31:46,707 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 15:31:46,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2016111436, now seen corresponding path program 15 times [2024-06-04 15:31:46,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:46,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180523889] [2024-06-04 15:31:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:46,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:47,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:47,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180523889] [2024-06-04 15:31:47,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180523889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:47,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:47,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804543846] [2024-06-04 15:31:47,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:47,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:48,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:48,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 313 transitions, 2912 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 15:31:48,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:48,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:48,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:48,453 INFO L124 PetriNetUnfolderBase]: 835/1497 cut-off events. [2024-06-04 15:31:48,453 INFO L125 PetriNetUnfolderBase]: For 134470/134470 co-relation queries the response was YES. [2024-06-04 15:31:48,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8522 conditions, 1497 events. 835/1497 cut-off events. For 134470/134470 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8433 event pairs, 131 based on Foata normal form. 2/1498 useless extension candidates. Maximal degree in co-relation 8351. Up to 1458 conditions per place. [2024-06-04 15:31:48,470 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 308 selfloop transitions, 15 changer transitions 0/325 dead transitions. [2024-06-04 15:31:48,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 325 transitions, 3586 flow [2024-06-04 15:31:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:48,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-04 15:31:48,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-04 15:31:48,471 INFO L175 Difference]: Start difference. First operand has 366 places, 313 transitions, 2912 flow. Second operand 10 states and 107 transitions. [2024-06-04 15:31:48,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 325 transitions, 3586 flow [2024-06-04 15:31:48,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 325 transitions, 3520 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-04 15:31:48,956 INFO L231 Difference]: Finished difference. Result has 368 places, 313 transitions, 2880 flow [2024-06-04 15:31:48,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2846, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2880, PETRI_PLACES=368, PETRI_TRANSITIONS=313} [2024-06-04 15:31:48,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-04 15:31:48,956 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 313 transitions, 2880 flow [2024-06-04 15:31:48,956 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 15:31:48,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:48,956 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 15:31:48,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-04 15:31:48,957 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 15:31:48,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:48,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2030971188, now seen corresponding path program 17 times [2024-06-04 15:31:48,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:48,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670905719] [2024-06-04 15:31:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:48,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:49,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:49,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670905719] [2024-06-04 15:31:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670905719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:49,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-04 15:31:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535405722] [2024-06-04 15:31:49,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:49,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-04 15:31:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-04 15:31:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-04 15:31:49,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:49,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 313 transitions, 2880 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 15:31:49,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:49,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:49,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:50,478 INFO L124 PetriNetUnfolderBase]: 831/1491 cut-off events. [2024-06-04 15:31:50,478 INFO L125 PetriNetUnfolderBase]: For 121375/121375 co-relation queries the response was YES. [2024-06-04 15:31:50,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8207 conditions, 1491 events. 831/1491 cut-off events. For 121375/121375 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8405 event pairs, 131 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 8035. Up to 1428 conditions per place. [2024-06-04 15:31:50,494 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 302 selfloop transitions, 23 changer transitions 0/327 dead transitions. [2024-06-04 15:31:50,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 327 transitions, 3586 flow [2024-06-04 15:31:50,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 15:31:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 15:31:50,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-04 15:31:50,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-04 15:31:50,495 INFO L175 Difference]: Start difference. First operand has 368 places, 313 transitions, 2880 flow. Second operand 10 states and 111 transitions. [2024-06-04 15:31:50,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 327 transitions, 3586 flow [2024-06-04 15:31:50,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 327 transitions, 3472 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:50,934 INFO L231 Difference]: Finished difference. Result has 369 places, 315 transitions, 2847 flow [2024-06-04 15:31:50,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2766, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2847, PETRI_PLACES=369, PETRI_TRANSITIONS=315} [2024-06-04 15:31:50,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-04 15:31:50,934 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 315 transitions, 2847 flow [2024-06-04 15:31:50,934 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 15:31:50,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:50,935 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 15:31:50,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-04 15:31:50,935 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 15:31:50,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:50,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2136345336, now seen corresponding path program 18 times [2024-06-04 15:31:50,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:50,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964494802] [2024-06-04 15:31:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:50,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:52,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:52,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964494802] [2024-06-04 15:31:52,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964494802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:52,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:52,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:31:52,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220045429] [2024-06-04 15:31:52,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:52,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:31:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:52,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:31:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:31:52,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:52,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 315 transitions, 2847 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 15:31:52,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:52,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:52,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:53,235 INFO L124 PetriNetUnfolderBase]: 827/1485 cut-off events. [2024-06-04 15:31:53,235 INFO L125 PetriNetUnfolderBase]: For 107590/107590 co-relation queries the response was YES. [2024-06-04 15:31:53,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7863 conditions, 1485 events. 827/1485 cut-off events. For 107590/107590 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8356 event pairs, 100 based on Foata normal form. 2/1486 useless extension candidates. Maximal degree in co-relation 7690. Up to 1371 conditions per place. [2024-06-04 15:31:53,247 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 297 selfloop transitions, 40 changer transitions 0/339 dead transitions. [2024-06-04 15:31:53,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 339 transitions, 3607 flow [2024-06-04 15:31:53,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:31:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:31:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 15:31:53,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 15:31:53,248 INFO L175 Difference]: Start difference. First operand has 369 places, 315 transitions, 2847 flow. Second operand 12 states and 143 transitions. [2024-06-04 15:31:53,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 339 transitions, 3607 flow [2024-06-04 15:31:53,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 339 transitions, 3500 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:31:53,611 INFO L231 Difference]: Finished difference. Result has 373 places, 317 transitions, 2860 flow [2024-06-04 15:31:53,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2860, PETRI_PLACES=373, PETRI_TRANSITIONS=317} [2024-06-04 15:31:53,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-04 15:31:53,611 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 317 transitions, 2860 flow [2024-06-04 15:31:53,611 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 15:31:53,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:53,611 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 15:31:53,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-04 15:31:53,611 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 15:31:53,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash 857051683, now seen corresponding path program 1 times [2024-06-04 15:31:53,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:53,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499115802] [2024-06-04 15:31:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:53,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:55,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:55,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499115802] [2024-06-04 15:31:55,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499115802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:55,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:55,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:31:55,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621704932] [2024-06-04 15:31:55,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:55,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:31:55,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:31:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:31:55,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:55,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 317 transitions, 2860 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 15:31:55,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:55,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:55,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:56,004 INFO L124 PetriNetUnfolderBase]: 868/1572 cut-off events. [2024-06-04 15:31:56,004 INFO L125 PetriNetUnfolderBase]: For 228990/228990 co-relation queries the response was YES. [2024-06-04 15:31:56,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9351 conditions, 1572 events. 868/1572 cut-off events. For 228990/228990 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8937 event pairs, 135 based on Foata normal form. 8/1579 useless extension candidates. Maximal degree in co-relation 9177. Up to 1286 conditions per place. [2024-06-04 15:31:56,023 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 310 selfloop transitions, 26 changer transitions 16/354 dead transitions. [2024-06-04 15:31:56,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 354 transitions, 3952 flow [2024-06-04 15:31:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-04 15:31:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-04 15:31:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-04 15:31:56,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-04 15:31:56,024 INFO L175 Difference]: Start difference. First operand has 373 places, 317 transitions, 2860 flow. Second operand 13 states and 160 transitions. [2024-06-04 15:31:56,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 354 transitions, 3952 flow [2024-06-04 15:31:56,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 354 transitions, 3701 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-04 15:31:56,642 INFO L231 Difference]: Finished difference. Result has 373 places, 313 transitions, 2642 flow [2024-06-04 15:31:56,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2609, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2642, PETRI_PLACES=373, PETRI_TRANSITIONS=313} [2024-06-04 15:31:56,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-04 15:31:56,642 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 313 transitions, 2642 flow [2024-06-04 15:31:56,642 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 15:31:56,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:31:56,642 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 15:31:56,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-04 15:31:56,643 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 15:31:56,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:31:56,643 INFO L85 PathProgramCache]: Analyzing trace with hash -2118129635, now seen corresponding path program 2 times [2024-06-04 15:31:56,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:31:56,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659109204] [2024-06-04 15:31:56,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:31:56,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:31:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:31:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:31:58,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:31:58,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659109204] [2024-06-04 15:31:58,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659109204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:31:58,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:31:58,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:31:58,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393148005] [2024-06-04 15:31:58,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:31:58,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:31:58,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:31:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:31:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:31:58,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:31:58,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 313 transitions, 2642 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 15:31:58,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:31:58,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:31:58,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:31:59,444 INFO L124 PetriNetUnfolderBase]: 870/1580 cut-off events. [2024-06-04 15:31:59,445 INFO L125 PetriNetUnfolderBase]: For 295488/295488 co-relation queries the response was YES. [2024-06-04 15:31:59,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10109 conditions, 1580 events. 870/1580 cut-off events. For 295488/295488 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9000 event pairs, 139 based on Foata normal form. 8/1587 useless extension candidates. Maximal degree in co-relation 9941. Up to 1284 conditions per place. [2024-06-04 15:31:59,462 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 305 selfloop transitions, 21 changer transitions 13/341 dead transitions. [2024-06-04 15:31:59,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 341 transitions, 3708 flow [2024-06-04 15:31:59,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:31:59,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:31:59,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:31:59,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:31:59,463 INFO L175 Difference]: Start difference. First operand has 373 places, 313 transitions, 2642 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:31:59,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 341 transitions, 3708 flow [2024-06-04 15:32:00,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 341 transitions, 3643 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:00,208 INFO L231 Difference]: Finished difference. Result has 366 places, 307 transitions, 2590 flow [2024-06-04 15:32:00,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2590, PETRI_PLACES=366, PETRI_TRANSITIONS=307} [2024-06-04 15:32:00,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-04 15:32:00,208 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 307 transitions, 2590 flow [2024-06-04 15:32:00,208 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 15:32:00,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:00,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:00,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-04 15:32:00,209 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 15:32:00,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:00,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1045529527, now seen corresponding path program 3 times [2024-06-04 15:32:00,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:00,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398292039] [2024-06-04 15:32:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:00,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:01,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:01,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398292039] [2024-06-04 15:32:01,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398292039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:01,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:01,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:01,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003983336] [2024-06-04 15:32:01,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:01,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:01,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:01,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:01,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:01,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:01,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 307 transitions, 2590 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 15:32:01,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:01,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:01,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:02,454 INFO L124 PetriNetUnfolderBase]: 851/1547 cut-off events. [2024-06-04 15:32:02,454 INFO L125 PetriNetUnfolderBase]: For 296412/296412 co-relation queries the response was YES. [2024-06-04 15:32:02,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9643 conditions, 1547 events. 851/1547 cut-off events. For 296412/296412 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8745 event pairs, 142 based on Foata normal form. 12/1558 useless extension candidates. Maximal degree in co-relation 9479. Up to 1406 conditions per place. [2024-06-04 15:32:02,472 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 298 selfloop transitions, 28 changer transitions 10/338 dead transitions. [2024-06-04 15:32:02,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 338 transitions, 3400 flow [2024-06-04 15:32:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-04 15:32:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-04 15:32:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 165 transitions. [2024-06-04 15:32:02,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:32:02,473 INFO L175 Difference]: Start difference. First operand has 366 places, 307 transitions, 2590 flow. Second operand 15 states and 165 transitions. [2024-06-04 15:32:02,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 338 transitions, 3400 flow [2024-06-04 15:32:03,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 338 transitions, 3351 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-04 15:32:03,026 INFO L231 Difference]: Finished difference. Result has 362 places, 304 transitions, 2599 flow [2024-06-04 15:32:03,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2541, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2599, PETRI_PLACES=362, PETRI_TRANSITIONS=304} [2024-06-04 15:32:03,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-04 15:32:03,027 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 304 transitions, 2599 flow [2024-06-04 15:32:03,027 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 15:32:03,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:03,027 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 15:32:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-04 15:32:03,027 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 15:32:03,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1045524877, now seen corresponding path program 4 times [2024-06-04 15:32:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:03,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406255298] [2024-06-04 15:32:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:04,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:04,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406255298] [2024-06-04 15:32:04,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406255298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:04,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:04,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:04,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438853952] [2024-06-04 15:32:04,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:04,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:04,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:04,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:04,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 304 transitions, 2599 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 15:32:04,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:04,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:04,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:05,180 INFO L124 PetriNetUnfolderBase]: 837/1525 cut-off events. [2024-06-04 15:32:05,180 INFO L125 PetriNetUnfolderBase]: For 248161/248161 co-relation queries the response was YES. [2024-06-04 15:32:05,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9470 conditions, 1525 events. 837/1525 cut-off events. For 248161/248161 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8628 event pairs, 134 based on Foata normal form. 8/1532 useless extension candidates. Maximal degree in co-relation 9310. Up to 1284 conditions per place. [2024-06-04 15:32:05,192 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 18 changer transitions 20/337 dead transitions. [2024-06-04 15:32:05,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 337 transitions, 3631 flow [2024-06-04 15:32:05,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-04 15:32:05,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-04 15:32:05,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-06-04 15:32:05,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3549107142857143 [2024-06-04 15:32:05,193 INFO L175 Difference]: Start difference. First operand has 362 places, 304 transitions, 2599 flow. Second operand 14 states and 159 transitions. [2024-06-04 15:32:05,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 337 transitions, 3631 flow [2024-06-04 15:32:05,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 337 transitions, 3542 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-04 15:32:05,832 INFO L231 Difference]: Finished difference. Result has 362 places, 294 transitions, 2474 flow [2024-06-04 15:32:05,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2474, PETRI_PLACES=362, PETRI_TRANSITIONS=294} [2024-06-04 15:32:05,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-04 15:32:05,833 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 294 transitions, 2474 flow [2024-06-04 15:32:05,833 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 15:32:05,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:05,833 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 15:32:05,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-04 15:32:05,833 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 15:32:05,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:05,833 INFO L85 PathProgramCache]: Analyzing trace with hash -557350029, now seen corresponding path program 5 times [2024-06-04 15:32:05,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:05,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931357450] [2024-06-04 15:32:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:05,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:07,852 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 15:32:07,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931357450] [2024-06-04 15:32:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931357450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:07,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146389904] [2024-06-04 15:32:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:07,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:07,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:08,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:08,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 294 transitions, 2474 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 15:32:08,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:08,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:08,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:08,685 INFO L124 PetriNetUnfolderBase]: 783/1418 cut-off events. [2024-06-04 15:32:08,685 INFO L125 PetriNetUnfolderBase]: For 198474/198474 co-relation queries the response was YES. [2024-06-04 15:32:08,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 1418 events. 783/1418 cut-off events. For 198474/198474 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7922 event pairs, 118 based on Foata normal form. 16/1433 useless extension candidates. Maximal degree in co-relation 6982. Up to 1284 conditions per place. [2024-06-04 15:32:08,700 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 11 changer transitions 25/317 dead transitions. [2024-06-04 15:32:08,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 317 transitions, 3188 flow [2024-06-04 15:32:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:32:08,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:32:08,701 INFO L175 Difference]: Start difference. First operand has 362 places, 294 transitions, 2474 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:32:08,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 317 transitions, 3188 flow [2024-06-04 15:32:09,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 317 transitions, 3146 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-04 15:32:09,018 INFO L231 Difference]: Finished difference. Result has 351 places, 285 transitions, 2384 flow [2024-06-04 15:32:09,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2384, PETRI_PLACES=351, PETRI_TRANSITIONS=285} [2024-06-04 15:32:09,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-04 15:32:09,018 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 285 transitions, 2384 flow [2024-06-04 15:32:09,018 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 15:32:09,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:09,018 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 15:32:09,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-04 15:32:09,018 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 15:32:09,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1265444631, now seen corresponding path program 1 times [2024-06-04 15:32:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:09,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954065408] [2024-06-04 15:32:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:09,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:10,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:10,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954065408] [2024-06-04 15:32:10,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954065408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:10,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:10,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:10,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653148087] [2024-06-04 15:32:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:10,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:10,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:10,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:10,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:10,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 285 transitions, 2384 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 15:32:10,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:10,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:10,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:10,795 INFO L124 PetriNetUnfolderBase]: 755/1361 cut-off events. [2024-06-04 15:32:10,796 INFO L125 PetriNetUnfolderBase]: For 168349/168349 co-relation queries the response was YES. [2024-06-04 15:32:10,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6943 conditions, 1361 events. 755/1361 cut-off events. For 168349/168349 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7549 event pairs, 94 based on Foata normal form. 12/1372 useless extension candidates. Maximal degree in co-relation 6783. Up to 716 conditions per place. [2024-06-04 15:32:10,810 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 125 changer transitions 7/308 dead transitions. [2024-06-04 15:32:10,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 308 transitions, 3112 flow [2024-06-04 15:32:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:32:10,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:32:10,811 INFO L175 Difference]: Start difference. First operand has 351 places, 285 transitions, 2384 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:32:10,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 308 transitions, 3112 flow [2024-06-04 15:32:11,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 308 transitions, 3066 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:11,115 INFO L231 Difference]: Finished difference. Result has 336 places, 283 transitions, 2602 flow [2024-06-04 15:32:11,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2602, PETRI_PLACES=336, PETRI_TRANSITIONS=283} [2024-06-04 15:32:11,115 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-04 15:32:11,115 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 283 transitions, 2602 flow [2024-06-04 15:32:11,115 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 15:32:11,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:11,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:11,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-04 15:32:11,116 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 15:32:11,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:11,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1265451575, now seen corresponding path program 6 times [2024-06-04 15:32:11,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:11,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028811685] [2024-06-04 15:32:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:11,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:12,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:12,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028811685] [2024-06-04 15:32:12,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028811685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:12,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:12,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:12,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55600748] [2024-06-04 15:32:12,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:12,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:12,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:12,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:12,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:12,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 283 transitions, 2602 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 15:32:12,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:12,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:12,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:13,500 INFO L124 PetriNetUnfolderBase]: 747/1349 cut-off events. [2024-06-04 15:32:13,501 INFO L125 PetriNetUnfolderBase]: For 140970/140970 co-relation queries the response was YES. [2024-06-04 15:32:13,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1349 events. 747/1349 cut-off events. For 140970/140970 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7457 event pairs, 96 based on Foata normal form. 10/1358 useless extension candidates. Maximal degree in co-relation 6943. Up to 710 conditions per place. [2024-06-04 15:32:13,514 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 122 changer transitions 9/307 dead transitions. [2024-06-04 15:32:13,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 307 transitions, 3298 flow [2024-06-04 15:32:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:13,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-04 15:32:13,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-04 15:32:13,515 INFO L175 Difference]: Start difference. First operand has 336 places, 283 transitions, 2602 flow. Second operand 12 states and 153 transitions. [2024-06-04 15:32:13,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 307 transitions, 3298 flow [2024-06-04 15:32:13,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 307 transitions, 2987 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-04 15:32:13,888 INFO L231 Difference]: Finished difference. Result has 335 places, 280 transitions, 2519 flow [2024-06-04 15:32:13,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2519, PETRI_PLACES=335, PETRI_TRANSITIONS=280} [2024-06-04 15:32:13,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-04 15:32:13,889 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 280 transitions, 2519 flow [2024-06-04 15:32:13,889 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 15:32:13,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:13,889 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 15:32:13,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-04 15:32:13,889 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 15:32:13,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1395894629, now seen corresponding path program 7 times [2024-06-04 15:32:13,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:13,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037668499] [2024-06-04 15:32:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:13,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:15,158 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 15:32:15,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:15,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037668499] [2024-06-04 15:32:15,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037668499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:15,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:15,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:15,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945201654] [2024-06-04 15:32:15,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:15,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:15,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:15,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:15,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 280 transitions, 2519 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 15:32:15,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:15,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:15,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:15,876 INFO L124 PetriNetUnfolderBase]: 769/1399 cut-off events. [2024-06-04 15:32:15,876 INFO L125 PetriNetUnfolderBase]: For 207688/207688 co-relation queries the response was YES. [2024-06-04 15:32:15,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8595 conditions, 1399 events. 769/1399 cut-off events. For 207688/207688 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7843 event pairs, 86 based on Foata normal form. 8/1406 useless extension candidates. Maximal degree in co-relation 8441. Up to 907 conditions per place. [2024-06-04 15:32:15,890 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 89 changer transitions 8/309 dead transitions. [2024-06-04 15:32:15,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 309 transitions, 3501 flow [2024-06-04 15:32:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:32:15,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:32:15,891 INFO L175 Difference]: Start difference. First operand has 335 places, 280 transitions, 2519 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:32:15,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 309 transitions, 3501 flow [2024-06-04 15:32:16,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 309 transitions, 3225 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-04 15:32:16,531 INFO L231 Difference]: Finished difference. Result has 332 places, 277 transitions, 2409 flow [2024-06-04 15:32:16,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2409, PETRI_PLACES=332, PETRI_TRANSITIONS=277} [2024-06-04 15:32:16,532 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-04 15:32:16,532 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 277 transitions, 2409 flow [2024-06-04 15:32:16,532 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 15:32:16,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:16,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:16,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-04 15:32:16,532 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 15:32:16,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1389223305, now seen corresponding path program 2 times [2024-06-04 15:32:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:16,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701372300] [2024-06-04 15:32:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:16,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:18,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:18,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701372300] [2024-06-04 15:32:18,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701372300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:18,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:18,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:18,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603639213] [2024-06-04 15:32:18,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:18,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:18,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:18,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:18,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:18,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:18,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 277 transitions, 2409 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 15:32:18,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:18,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:18,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:19,272 INFO L124 PetriNetUnfolderBase]: 747/1353 cut-off events. [2024-06-04 15:32:19,272 INFO L125 PetriNetUnfolderBase]: For 156369/156369 co-relation queries the response was YES. [2024-06-04 15:32:19,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8095 conditions, 1353 events. 747/1353 cut-off events. For 156369/156369 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7511 event pairs, 91 based on Foata normal form. 2/1354 useless extension candidates. Maximal degree in co-relation 7941. Up to 994 conditions per place. [2024-06-04 15:32:19,289 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 90 changer transitions 0/295 dead transitions. [2024-06-04 15:32:19,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 295 transitions, 3073 flow [2024-06-04 15:32:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:19,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:32:19,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:32:19,290 INFO L175 Difference]: Start difference. First operand has 332 places, 277 transitions, 2409 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:32:19,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 295 transitions, 3073 flow [2024-06-04 15:32:19,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 295 transitions, 2884 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-04 15:32:19,833 INFO L231 Difference]: Finished difference. Result has 328 places, 278 transitions, 2438 flow [2024-06-04 15:32:19,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2438, PETRI_PLACES=328, PETRI_TRANSITIONS=278} [2024-06-04 15:32:19,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-04 15:32:19,834 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 278 transitions, 2438 flow [2024-06-04 15:32:19,834 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 15:32:19,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:19,834 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 15:32:19,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-04 15:32:19,834 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 15:32:19,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:19,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1994540619, now seen corresponding path program 3 times [2024-06-04 15:32:19,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:19,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415576608] [2024-06-04 15:32:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:19,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:21,788 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 15:32:21,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:21,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415576608] [2024-06-04 15:32:21,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415576608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:21,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:21,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:21,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421568079] [2024-06-04 15:32:21,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:21,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:21,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:21,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:21,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 278 transitions, 2438 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 15:32:21,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:21,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:21,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:22,555 INFO L124 PetriNetUnfolderBase]: 795/1453 cut-off events. [2024-06-04 15:32:22,556 INFO L125 PetriNetUnfolderBase]: For 267740/267740 co-relation queries the response was YES. [2024-06-04 15:32:22,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9880 conditions, 1453 events. 795/1453 cut-off events. For 267740/267740 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8208 event pairs, 97 based on Foata normal form. 8/1460 useless extension candidates. Maximal degree in co-relation 9727. Up to 881 conditions per place. [2024-06-04 15:32:22,571 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 91 changer transitions 7/306 dead transitions. [2024-06-04 15:32:22,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 306 transitions, 3432 flow [2024-06-04 15:32:22,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:22,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-04 15:32:22,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-04 15:32:22,572 INFO L175 Difference]: Start difference. First operand has 328 places, 278 transitions, 2438 flow. Second operand 12 states and 150 transitions. [2024-06-04 15:32:22,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 306 transitions, 3432 flow [2024-06-04 15:32:23,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 306 transitions, 3224 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:23,364 INFO L231 Difference]: Finished difference. Result has 331 places, 276 transitions, 2403 flow [2024-06-04 15:32:23,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2230, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2403, PETRI_PLACES=331, PETRI_TRANSITIONS=276} [2024-06-04 15:32:23,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-04 15:32:23,365 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 276 transitions, 2403 flow [2024-06-04 15:32:23,365 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 15:32:23,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:23,365 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 15:32:23,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-04 15:32:23,365 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 15:32:23,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1389460889, now seen corresponding path program 8 times [2024-06-04 15:32:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:23,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864393636] [2024-06-04 15:32:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:23,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:25,120 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 15:32:25,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:25,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864393636] [2024-06-04 15:32:25,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864393636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:25,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:25,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:25,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124329875] [2024-06-04 15:32:25,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:25,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:25,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:25,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:25,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:25,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:25,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 276 transitions, 2403 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 15:32:25,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:25,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:25,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:25,978 INFO L124 PetriNetUnfolderBase]: 779/1425 cut-off events. [2024-06-04 15:32:25,978 INFO L125 PetriNetUnfolderBase]: For 260395/260395 co-relation queries the response was YES. [2024-06-04 15:32:25,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9255 conditions, 1425 events. 779/1425 cut-off events. For 260395/260395 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8032 event pairs, 101 based on Foata normal form. 10/1434 useless extension candidates. Maximal degree in co-relation 9101. Up to 1022 conditions per place. [2024-06-04 15:32:25,995 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 87 changer transitions 11/299 dead transitions. [2024-06-04 15:32:25,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 299 transitions, 3079 flow [2024-06-04 15:32:25,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:32:25,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 15:32:25,996 INFO L175 Difference]: Start difference. First operand has 331 places, 276 transitions, 2403 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:32:25,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 299 transitions, 3079 flow [2024-06-04 15:32:26,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 299 transitions, 2900 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:26,702 INFO L231 Difference]: Finished difference. Result has 330 places, 273 transitions, 2380 flow [2024-06-04 15:32:26,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2380, PETRI_PLACES=330, PETRI_TRANSITIONS=273} [2024-06-04 15:32:26,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-04 15:32:26,702 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 273 transitions, 2380 flow [2024-06-04 15:32:26,703 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 15:32:26,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:26,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:26,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-04 15:32:26,703 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 15:32:26,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1561943835, now seen corresponding path program 4 times [2024-06-04 15:32:26,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:26,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212099981] [2024-06-04 15:32:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:26,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:28,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:28,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212099981] [2024-06-04 15:32:28,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212099981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:28,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:28,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:28,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7448462] [2024-06-04 15:32:28,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:28,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:28,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:28,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:28,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 273 transitions, 2380 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 15:32:28,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:28,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:28,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:28,944 INFO L124 PetriNetUnfolderBase]: 750/1370 cut-off events. [2024-06-04 15:32:28,944 INFO L125 PetriNetUnfolderBase]: For 192614/192614 co-relation queries the response was YES. [2024-06-04 15:32:28,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8784 conditions, 1370 events. 750/1370 cut-off events. For 192614/192614 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7660 event pairs, 98 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 8631. Up to 1011 conditions per place. [2024-06-04 15:32:28,958 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 87 changer transitions 0/292 dead transitions. [2024-06-04 15:32:28,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 292 transitions, 3044 flow [2024-06-04 15:32:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:28,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:32:28,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:32:28,959 INFO L175 Difference]: Start difference. First operand has 330 places, 273 transitions, 2380 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:32:28,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 292 transitions, 3044 flow [2024-06-04 15:32:29,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 292 transitions, 2866 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:29,601 INFO L231 Difference]: Finished difference. Result has 327 places, 274 transitions, 2416 flow [2024-06-04 15:32:29,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2202, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2416, PETRI_PLACES=327, PETRI_TRANSITIONS=274} [2024-06-04 15:32:29,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-04 15:32:29,601 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 274 transitions, 2416 flow [2024-06-04 15:32:29,601 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 15:32:29,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:29,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:29,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-04 15:32:29,602 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 15:32:29,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:29,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1561950779, now seen corresponding path program 9 times [2024-06-04 15:32:29,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:29,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119562446] [2024-06-04 15:32:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:29,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119562446] [2024-06-04 15:32:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119562446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167745294] [2024-06-04 15:32:31,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:31,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:31,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:31,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:31,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:31,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:31,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 274 transitions, 2416 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 15:32:31,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:31,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:31,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:31,877 INFO L124 PetriNetUnfolderBase]: 768/1416 cut-off events. [2024-06-04 15:32:31,878 INFO L125 PetriNetUnfolderBase]: For 275127/275127 co-relation queries the response was YES. [2024-06-04 15:32:31,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8451 conditions, 1416 events. 768/1416 cut-off events. For 275127/275127 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7961 event pairs, 122 based on Foata normal form. 20/1435 useless extension candidates. Maximal degree in co-relation 8299. Up to 754 conditions per place. [2024-06-04 15:32:31,925 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 114 changer transitions 13/298 dead transitions. [2024-06-04 15:32:31,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 298 transitions, 3094 flow [2024-06-04 15:32:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:32:31,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:32:31,926 INFO L175 Difference]: Start difference. First operand has 327 places, 274 transitions, 2416 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:32:31,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 298 transitions, 3094 flow [2024-06-04 15:32:32,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 298 transitions, 2890 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:32,440 INFO L231 Difference]: Finished difference. Result has 330 places, 267 transitions, 2390 flow [2024-06-04 15:32:32,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2390, PETRI_PLACES=330, PETRI_TRANSITIONS=267} [2024-06-04 15:32:32,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-04 15:32:32,441 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 267 transitions, 2390 flow [2024-06-04 15:32:32,441 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 15:32:32,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:32,441 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 15:32:32,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-04 15:32:32,441 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 15:32:32,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:32,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1566712379, now seen corresponding path program 10 times [2024-06-04 15:32:32,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:32,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121989269] [2024-06-04 15:32:32,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:32,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121989269] [2024-06-04 15:32:33,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121989269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:33,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:33,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:33,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96400222] [2024-06-04 15:32:33,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:33,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:33,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:33,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:34,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:34,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 267 transitions, 2390 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 15:32:34,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:34,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:34,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:34,686 INFO L124 PetriNetUnfolderBase]: 750/1390 cut-off events. [2024-06-04 15:32:34,686 INFO L125 PetriNetUnfolderBase]: For 254771/254771 co-relation queries the response was YES. [2024-06-04 15:32:34,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9254 conditions, 1390 events. 750/1390 cut-off events. For 254771/254771 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7849 event pairs, 106 based on Foata normal form. 8/1397 useless extension candidates. Maximal degree in co-relation 9101. Up to 916 conditions per place. [2024-06-04 15:32:34,702 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 197 selfloop transitions, 85 changer transitions 10/294 dead transitions. [2024-06-04 15:32:34,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 294 transitions, 3298 flow [2024-06-04 15:32:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-04 15:32:34,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-04 15:32:34,703 INFO L175 Difference]: Start difference. First operand has 330 places, 267 transitions, 2390 flow. Second operand 12 states and 149 transitions. [2024-06-04 15:32:34,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 294 transitions, 3298 flow [2024-06-04 15:32:35,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 294 transitions, 3056 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-04 15:32:35,295 INFO L231 Difference]: Finished difference. Result has 326 places, 264 transitions, 2307 flow [2024-06-04 15:32:35,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2307, PETRI_PLACES=326, PETRI_TRANSITIONS=264} [2024-06-04 15:32:35,295 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-04 15:32:35,295 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 264 transitions, 2307 flow [2024-06-04 15:32:35,296 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 15:32:35,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:35,296 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 15:32:35,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-04 15:32:35,296 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 15:32:35,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:35,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1562128409, now seen corresponding path program 11 times [2024-06-04 15:32:35,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:35,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708536494] [2024-06-04 15:32:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:35,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:36,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:36,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708536494] [2024-06-04 15:32:36,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708536494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:36,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:36,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:36,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896735099] [2024-06-04 15:32:36,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:36,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:36,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:36,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:36,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:36,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 264 transitions, 2307 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 15:32:36,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:36,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:36,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:37,507 INFO L124 PetriNetUnfolderBase]: 740/1372 cut-off events. [2024-06-04 15:32:37,507 INFO L125 PetriNetUnfolderBase]: For 248535/248535 co-relation queries the response was YES. [2024-06-04 15:32:37,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9082 conditions, 1372 events. 740/1372 cut-off events. For 248535/248535 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7645 event pairs, 104 based on Foata normal form. 8/1379 useless extension candidates. Maximal degree in co-relation 8931. Up to 941 conditions per place. [2024-06-04 15:32:37,521 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 95 changer transitions 11/287 dead transitions. [2024-06-04 15:32:37,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 287 transitions, 2953 flow [2024-06-04 15:32:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:37,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-04 15:32:37,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-04 15:32:37,522 INFO L175 Difference]: Start difference. First operand has 326 places, 264 transitions, 2307 flow. Second operand 12 states and 147 transitions. [2024-06-04 15:32:37,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 287 transitions, 2953 flow [2024-06-04 15:32:38,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 287 transitions, 2783 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:38,239 INFO L231 Difference]: Finished difference. Result has 324 places, 261 transitions, 2303 flow [2024-06-04 15:32:38,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2303, PETRI_PLACES=324, PETRI_TRANSITIONS=261} [2024-06-04 15:32:38,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-04 15:32:38,239 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 261 transitions, 2303 flow [2024-06-04 15:32:38,239 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 15:32:38,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:38,239 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 15:32:38,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-04 15:32:38,239 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 15:32:38,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1436331635, now seen corresponding path program 12 times [2024-06-04 15:32:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:38,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72254162] [2024-06-04 15:32:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:38,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72254162] [2024-06-04 15:32:39,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72254162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:39,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:39,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:39,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912794670] [2024-06-04 15:32:39,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:39,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:39,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:39,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:39,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 261 transitions, 2303 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 15:32:39,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:39,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:39,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:40,142 INFO L124 PetriNetUnfolderBase]: 711/1313 cut-off events. [2024-06-04 15:32:40,143 INFO L125 PetriNetUnfolderBase]: For 194157/194157 co-relation queries the response was YES. [2024-06-04 15:32:40,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7974 conditions, 1313 events. 711/1313 cut-off events. For 194157/194157 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7246 event pairs, 112 based on Foata normal form. 8/1320 useless extension candidates. Maximal degree in co-relation 7825. Up to 679 conditions per place. [2024-06-04 15:32:40,156 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 108 changer transitions 9/286 dead transitions. [2024-06-04 15:32:40,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 286 transitions, 3177 flow [2024-06-04 15:32:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:40,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:32:40,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 15:32:40,157 INFO L175 Difference]: Start difference. First operand has 324 places, 261 transitions, 2303 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:32:40,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 286 transitions, 3177 flow [2024-06-04 15:32:40,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 286 transitions, 2979 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:32:40,697 INFO L231 Difference]: Finished difference. Result has 319 places, 257 transitions, 2300 flow [2024-06-04 15:32:40,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2300, PETRI_PLACES=319, PETRI_TRANSITIONS=257} [2024-06-04 15:32:40,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-04 15:32:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 257 transitions, 2300 flow [2024-06-04 15:32:40,697 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 15:32:40,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:40,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:40,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-04 15:32:40,698 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 15:32:40,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1000206733, now seen corresponding path program 13 times [2024-06-04 15:32:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:40,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969387529] [2024-06-04 15:32:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:40,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:42,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:42,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969387529] [2024-06-04 15:32:42,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969387529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:42,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:42,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:42,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254079081] [2024-06-04 15:32:42,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:42,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:42,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:42,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:42,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:42,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:42,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 257 transitions, 2300 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 15:32:42,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:42,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:42,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:42,698 INFO L124 PetriNetUnfolderBase]: 711/1313 cut-off events. [2024-06-04 15:32:42,698 INFO L125 PetriNetUnfolderBase]: For 216946/216946 co-relation queries the response was YES. [2024-06-04 15:32:42,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8056 conditions, 1313 events. 711/1313 cut-off events. For 216946/216946 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7235 event pairs, 114 based on Foata normal form. 12/1324 useless extension candidates. Maximal degree in co-relation 7909. Up to 996 conditions per place. [2024-06-04 15:32:42,708 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 67 changer transitions 7/281 dead transitions. [2024-06-04 15:32:42,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 281 transitions, 2978 flow [2024-06-04 15:32:42,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:42,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-04 15:32:42,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-04 15:32:42,709 INFO L175 Difference]: Start difference. First operand has 319 places, 257 transitions, 2300 flow. Second operand 11 states and 145 transitions. [2024-06-04 15:32:42,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 281 transitions, 2978 flow [2024-06-04 15:32:43,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 281 transitions, 2740 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:43,168 INFO L231 Difference]: Finished difference. Result has 313 places, 255 transitions, 2217 flow [2024-06-04 15:32:43,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2217, PETRI_PLACES=313, PETRI_TRANSITIONS=255} [2024-06-04 15:32:43,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-04 15:32:43,169 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 255 transitions, 2217 flow [2024-06-04 15:32:43,169 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 15:32:43,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:43,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:43,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-04 15:32:43,169 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 15:32:43,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash 953311335, now seen corresponding path program 5 times [2024-06-04 15:32:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:43,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044019896] [2024-06-04 15:32:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:44,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:44,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044019896] [2024-06-04 15:32:44,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044019896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:44,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:44,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:44,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296882078] [2024-06-04 15:32:44,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:44,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:44,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:44,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:44,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:44,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 255 transitions, 2217 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 15:32:44,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:44,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:44,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:45,328 INFO L124 PetriNetUnfolderBase]: 691/1273 cut-off events. [2024-06-04 15:32:45,328 INFO L125 PetriNetUnfolderBase]: For 155657/155657 co-relation queries the response was YES. [2024-06-04 15:32:45,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7818 conditions, 1273 events. 691/1273 cut-off events. For 155657/155657 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6980 event pairs, 114 based on Foata normal form. 2/1274 useless extension candidates. Maximal degree in co-relation 7673. Up to 1169 conditions per place. [2024-06-04 15:32:45,341 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 237 selfloop transitions, 34 changer transitions 0/273 dead transitions. [2024-06-04 15:32:45,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 273 transitions, 2839 flow [2024-06-04 15:32:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-04 15:32:45,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-04 15:32:45,342 INFO L175 Difference]: Start difference. First operand has 313 places, 255 transitions, 2217 flow. Second operand 11 states and 125 transitions. [2024-06-04 15:32:45,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 273 transitions, 2839 flow [2024-06-04 15:32:45,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 273 transitions, 2672 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:45,856 INFO L231 Difference]: Finished difference. Result has 314 places, 256 transitions, 2160 flow [2024-06-04 15:32:45,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2160, PETRI_PLACES=314, PETRI_TRANSITIONS=256} [2024-06-04 15:32:45,856 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 15:32:45,856 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 256 transitions, 2160 flow [2024-06-04 15:32:45,856 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 15:32:45,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:45,856 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 15:32:45,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-04 15:32:45,856 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 15:32:45,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:45,857 INFO L85 PathProgramCache]: Analyzing trace with hash 953599635, now seen corresponding path program 6 times [2024-06-04 15:32:45,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:45,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575464302] [2024-06-04 15:32:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:45,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:47,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:47,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575464302] [2024-06-04 15:32:47,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575464302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:47,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:47,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:47,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438983908] [2024-06-04 15:32:47,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:47,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:47,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:47,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:47,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:47,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:47,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 256 transitions, 2160 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 15:32:47,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:47,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:47,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:48,006 INFO L124 PetriNetUnfolderBase]: 703/1301 cut-off events. [2024-06-04 15:32:48,006 INFO L125 PetriNetUnfolderBase]: For 192512/192512 co-relation queries the response was YES. [2024-06-04 15:32:48,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7847 conditions, 1301 events. 703/1301 cut-off events. For 192512/192512 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7207 event pairs, 112 based on Foata normal form. 8/1308 useless extension candidates. Maximal degree in co-relation 7701. Up to 1181 conditions per place. [2024-06-04 15:32:48,019 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 28 changer transitions 13/276 dead transitions. [2024-06-04 15:32:48,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 276 transitions, 2798 flow [2024-06-04 15:32:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:32:48,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:32:48,020 INFO L175 Difference]: Start difference. First operand has 314 places, 256 transitions, 2160 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:32:48,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 276 transitions, 2798 flow [2024-06-04 15:32:48,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 276 transitions, 2698 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:48,556 INFO L231 Difference]: Finished difference. Result has 316 places, 252 transitions, 2091 flow [2024-06-04 15:32:48,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2091, PETRI_PLACES=316, PETRI_TRANSITIONS=252} [2024-06-04 15:32:48,557 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-04 15:32:48,557 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 252 transitions, 2091 flow [2024-06-04 15:32:48,557 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 15:32:48,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:48,557 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 15:32:48,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-04 15:32:48,557 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 15:32:48,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:48,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1000211383, now seen corresponding path program 14 times [2024-06-04 15:32:48,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:48,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227727403] [2024-06-04 15:32:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:48,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:50,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:50,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227727403] [2024-06-04 15:32:50,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227727403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:50,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:50,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716977575] [2024-06-04 15:32:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:50,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:50,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:50,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:50,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:50,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:50,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 252 transitions, 2091 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 15:32:50,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:50,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:50,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:50,833 INFO L124 PetriNetUnfolderBase]: 720/1340 cut-off events. [2024-06-04 15:32:50,833 INFO L125 PetriNetUnfolderBase]: For 258571/258571 co-relation queries the response was YES. [2024-06-04 15:32:50,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8968 conditions, 1340 events. 720/1340 cut-off events. For 258571/258571 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7474 event pairs, 111 based on Foata normal form. 8/1347 useless extension candidates. Maximal degree in co-relation 8821. Up to 1014 conditions per place. [2024-06-04 15:32:50,847 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 62 changer transitions 8/281 dead transitions. [2024-06-04 15:32:50,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 281 transitions, 2983 flow [2024-06-04 15:32:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:32:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:32:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-04 15:32:50,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-04 15:32:50,848 INFO L175 Difference]: Start difference. First operand has 316 places, 252 transitions, 2091 flow. Second operand 12 states and 154 transitions. [2024-06-04 15:32:50,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 281 transitions, 2983 flow [2024-06-04 15:32:51,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 281 transitions, 2915 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-04 15:32:51,426 INFO L231 Difference]: Finished difference. Result has 313 places, 249 transitions, 2136 flow [2024-06-04 15:32:51,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2029, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2136, PETRI_PLACES=313, PETRI_TRANSITIONS=249} [2024-06-04 15:32:51,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-04 15:32:51,426 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 249 transitions, 2136 flow [2024-06-04 15:32:51,427 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 15:32:51,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:51,427 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 15:32:51,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-04 15:32:51,427 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 15:32:51,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:51,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1130299177, now seen corresponding path program 15 times [2024-06-04 15:32:51,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:51,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776812971] [2024-06-04 15:32:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:51,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:52,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:52,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776812971] [2024-06-04 15:32:52,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776812971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:52,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:52,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:32:52,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786111564] [2024-06-04 15:32:52,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:52,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:32:52,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:52,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:32:52,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:32:52,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:52,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 249 transitions, 2136 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 15:32:52,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:52,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:52,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:53,325 INFO L124 PetriNetUnfolderBase]: 725/1355 cut-off events. [2024-06-04 15:32:53,325 INFO L125 PetriNetUnfolderBase]: For 294254/294254 co-relation queries the response was YES. [2024-06-04 15:32:53,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9022 conditions, 1355 events. 725/1355 cut-off events. For 294254/294254 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7586 event pairs, 141 based on Foata normal form. 16/1370 useless extension candidates. Maximal degree in co-relation 8877. Up to 1023 conditions per place. [2024-06-04 15:32:53,338 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 198 selfloop transitions, 57 changer transitions 15/272 dead transitions. [2024-06-04 15:32:53,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 272 transitions, 2760 flow [2024-06-04 15:32:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:53,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:32:53,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:32:53,339 INFO L175 Difference]: Start difference. First operand has 313 places, 249 transitions, 2136 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:32:53,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 272 transitions, 2760 flow [2024-06-04 15:32:53,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 272 transitions, 2634 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-04 15:32:53,946 INFO L231 Difference]: Finished difference. Result has 309 places, 242 transitions, 2078 flow [2024-06-04 15:32:53,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2078, PETRI_PLACES=309, PETRI_TRANSITIONS=242} [2024-06-04 15:32:53,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-04 15:32:53,946 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 242 transitions, 2078 flow [2024-06-04 15:32:53,946 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 15:32:53,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:53,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:32:53,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-04 15:32:53,947 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 15:32:53,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash -993540059, now seen corresponding path program 7 times [2024-06-04 15:32:53,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:53,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487831501] [2024-06-04 15:32:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:53,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:32:55,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487831501] [2024-06-04 15:32:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487831501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:55,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:55,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:55,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911591314] [2024-06-04 15:32:55,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:55,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:55,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:56,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:56,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 242 transitions, 2078 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 15:32:56,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:56,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:56,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:56,591 INFO L124 PetriNetUnfolderBase]: 686/1274 cut-off events. [2024-06-04 15:32:56,591 INFO L125 PetriNetUnfolderBase]: For 207545/207545 co-relation queries the response was YES. [2024-06-04 15:32:56,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8736 conditions, 1274 events. 686/1274 cut-off events. For 207545/207545 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6994 event pairs, 119 based on Foata normal form. 2/1275 useless extension candidates. Maximal degree in co-relation 8593. Up to 1094 conditions per place. [2024-06-04 15:32:56,604 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 52 changer transitions 0/261 dead transitions. [2024-06-04 15:32:56,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 261 transitions, 2684 flow [2024-06-04 15:32:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:32:56,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:32:56,605 INFO L175 Difference]: Start difference. First operand has 309 places, 242 transitions, 2078 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:32:56,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 261 transitions, 2684 flow [2024-06-04 15:32:57,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 261 transitions, 2556 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 15:32:57,227 INFO L231 Difference]: Finished difference. Result has 301 places, 243 transitions, 2098 flow [2024-06-04 15:32:57,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2098, PETRI_PLACES=301, PETRI_TRANSITIONS=243} [2024-06-04 15:32:57,227 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-04 15:32:57,228 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 243 transitions, 2098 flow [2024-06-04 15:32:57,228 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 15:32:57,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:57,228 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 15:32:57,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-04 15:32:57,228 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 15:32:57,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash 723614355, now seen corresponding path program 8 times [2024-06-04 15:32:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:57,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208174382] [2024-06-04 15:32:57,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:57,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:32:58,581 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 15:32:58,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:32:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208174382] [2024-06-04 15:32:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208174382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:32:58,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:32:58,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:32:58,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37294761] [2024-06-04 15:32:58,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:32:58,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:32:58,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:32:58,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:32:58,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:32:58,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:32:58,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 243 transitions, 2098 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 15:32:58,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:32:58,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:32:58,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:32:59,176 INFO L124 PetriNetUnfolderBase]: 690/1282 cut-off events. [2024-06-04 15:32:59,176 INFO L125 PetriNetUnfolderBase]: For 190450/190450 co-relation queries the response was YES. [2024-06-04 15:32:59,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8674 conditions, 1282 events. 690/1282 cut-off events. For 190450/190450 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7064 event pairs, 123 based on Foata normal form. 2/1283 useless extension candidates. Maximal degree in co-relation 8535. Up to 1095 conditions per place. [2024-06-04 15:32:59,189 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 56 changer transitions 0/262 dead transitions. [2024-06-04 15:32:59,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 262 transitions, 2706 flow [2024-06-04 15:32:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:32:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:32:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:32:59,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:32:59,190 INFO L175 Difference]: Start difference. First operand has 301 places, 243 transitions, 2098 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:32:59,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 262 transitions, 2706 flow [2024-06-04 15:32:59,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 262 transitions, 2570 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-04 15:32:59,758 INFO L231 Difference]: Finished difference. Result has 303 places, 244 transitions, 2119 flow [2024-06-04 15:32:59,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2119, PETRI_PLACES=303, PETRI_TRANSITIONS=244} [2024-06-04 15:32:59,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-04 15:32:59,758 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 244 transitions, 2119 flow [2024-06-04 15:32:59,758 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 15:32:59,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:32:59,758 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 15:32:59,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-04 15:32:59,759 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 15:32:59,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:32:59,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1157667991, now seen corresponding path program 9 times [2024-06-04 15:32:59,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:32:59,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254131100] [2024-06-04 15:32:59,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:32:59,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:32:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:01,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:01,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254131100] [2024-06-04 15:33:01,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254131100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:01,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:01,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:01,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241032116] [2024-06-04 15:33:01,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:01,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:01,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:01,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:01,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:01,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 244 transitions, 2119 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 15:33:01,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:01,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:01,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:01,751 INFO L124 PetriNetUnfolderBase]: 730/1362 cut-off events. [2024-06-04 15:33:01,751 INFO L125 PetriNetUnfolderBase]: For 261846/261846 co-relation queries the response was YES. [2024-06-04 15:33:01,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10331 conditions, 1362 events. 730/1362 cut-off events. For 261846/261846 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7622 event pairs, 139 based on Foata normal form. 2/1363 useless extension candidates. Maximal degree in co-relation 10191. Up to 1025 conditions per place. [2024-06-04 15:33:01,766 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 65 changer transitions 0/270 dead transitions. [2024-06-04 15:33:01,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 270 transitions, 3027 flow [2024-06-04 15:33:01,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:01,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-04 15:33:01,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-04 15:33:01,767 INFO L175 Difference]: Start difference. First operand has 303 places, 244 transitions, 2119 flow. Second operand 11 states and 143 transitions. [2024-06-04 15:33:01,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 270 transitions, 3027 flow [2024-06-04 15:33:02,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 270 transitions, 2882 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:02,605 INFO L231 Difference]: Finished difference. Result has 305 places, 246 transitions, 2190 flow [2024-06-04 15:33:02,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2190, PETRI_PLACES=305, PETRI_TRANSITIONS=246} [2024-06-04 15:33:02,605 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-04 15:33:02,605 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 246 transitions, 2190 flow [2024-06-04 15:33:02,605 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 15:33:02,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:02,605 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 15:33:02,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-04 15:33:02,606 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 15:33:02,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:02,606 INFO L85 PathProgramCache]: Analyzing trace with hash 593357301, now seen corresponding path program 10 times [2024-06-04 15:33:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:02,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939559876] [2024-06-04 15:33:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:02,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:04,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:04,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939559876] [2024-06-04 15:33:04,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939559876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:04,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:04,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:04,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996294074] [2024-06-04 15:33:04,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:04,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:04,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:04,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:04,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:04,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:04,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 246 transitions, 2190 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 15:33:04,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:04,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:04,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:04,686 INFO L124 PetriNetUnfolderBase]: 770/1442 cut-off events. [2024-06-04 15:33:04,686 INFO L125 PetriNetUnfolderBase]: For 332747/332747 co-relation queries the response was YES. [2024-06-04 15:33:04,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12030 conditions, 1442 events. 770/1442 cut-off events. For 332747/332747 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8214 event pairs, 159 based on Foata normal form. 2/1443 useless extension candidates. Maximal degree in co-relation 11889. Up to 1163 conditions per place. [2024-06-04 15:33:04,702 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 57 changer transitions 0/271 dead transitions. [2024-06-04 15:33:04,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 271 transitions, 3102 flow [2024-06-04 15:33:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-04 15:33:04,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-04 15:33:04,703 INFO L175 Difference]: Start difference. First operand has 305 places, 246 transitions, 2190 flow. Second operand 11 states and 138 transitions. [2024-06-04 15:33:04,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 271 transitions, 3102 flow [2024-06-04 15:33:05,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 271 transitions, 2959 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-04 15:33:05,600 INFO L231 Difference]: Finished difference. Result has 308 places, 248 transitions, 2251 flow [2024-06-04 15:33:05,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2251, PETRI_PLACES=308, PETRI_TRANSITIONS=248} [2024-06-04 15:33:05,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-04 15:33:05,601 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 248 transitions, 2251 flow [2024-06-04 15:33:05,601 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 15:33:05,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:05,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:05,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-04 15:33:05,601 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 15:33:05,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1335045465, now seen corresponding path program 16 times [2024-06-04 15:33:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:05,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954879216] [2024-06-04 15:33:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:05,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:07,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:07,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954879216] [2024-06-04 15:33:07,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954879216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:07,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:07,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:07,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780312728] [2024-06-04 15:33:07,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:07,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:07,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:07,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:07,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:07,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:07,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 248 transitions, 2251 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 15:33:07,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:07,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:07,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:07,946 INFO L124 PetriNetUnfolderBase]: 795/1493 cut-off events. [2024-06-04 15:33:07,946 INFO L125 PetriNetUnfolderBase]: For 382652/382652 co-relation queries the response was YES. [2024-06-04 15:33:07,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12245 conditions, 1493 events. 795/1493 cut-off events. For 382652/382652 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8622 event pairs, 163 based on Foata normal form. 10/1502 useless extension candidates. Maximal degree in co-relation 12103. Up to 1201 conditions per place. [2024-06-04 15:33:07,961 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 70 changer transitions 11/276 dead transitions. [2024-06-04 15:33:07,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 276 transitions, 2915 flow [2024-06-04 15:33:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-04 15:33:07,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-04 15:33:07,966 INFO L175 Difference]: Start difference. First operand has 308 places, 248 transitions, 2251 flow. Second operand 12 states and 148 transitions. [2024-06-04 15:33:07,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 276 transitions, 2915 flow [2024-06-04 15:33:08,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 276 transitions, 2794 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-04 15:33:08,993 INFO L231 Difference]: Finished difference. Result has 314 places, 249 transitions, 2284 flow [2024-06-04 15:33:08,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2284, PETRI_PLACES=314, PETRI_TRANSITIONS=249} [2024-06-04 15:33:08,994 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 15:33:08,994 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 249 transitions, 2284 flow [2024-06-04 15:33:08,994 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 15:33:08,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:08,994 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 15:33:08,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-04 15:33:08,995 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 15:33:08,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash 723376771, now seen corresponding path program 17 times [2024-06-04 15:33:08,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:08,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527610884] [2024-06-04 15:33:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:08,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:11,102 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 15:33:11,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:11,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527610884] [2024-06-04 15:33:11,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527610884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:11,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:11,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:11,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613494843] [2024-06-04 15:33:11,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:11,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:11,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:11,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:11,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 249 transitions, 2284 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 15:33:11,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:11,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:11,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:12,019 INFO L124 PetriNetUnfolderBase]: 787/1481 cut-off events. [2024-06-04 15:33:12,019 INFO L125 PetriNetUnfolderBase]: For 388931/388931 co-relation queries the response was YES. [2024-06-04 15:33:12,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12284 conditions, 1481 events. 787/1481 cut-off events. For 388931/388931 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8564 event pairs, 169 based on Foata normal form. 10/1490 useless extension candidates. Maximal degree in co-relation 12139. Up to 1265 conditions per place. [2024-06-04 15:33:12,037 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 41 changer transitions 21/273 dead transitions. [2024-06-04 15:33:12,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 273 transitions, 2912 flow [2024-06-04 15:33:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:12,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:12,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:33:12,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 15:33:12,038 INFO L175 Difference]: Start difference. First operand has 314 places, 249 transitions, 2284 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:33:12,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 273 transitions, 2912 flow [2024-06-04 15:33:13,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 273 transitions, 2723 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:33:13,183 INFO L231 Difference]: Finished difference. Result has 314 places, 238 transitions, 2097 flow [2024-06-04 15:33:13,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2097, PETRI_PLACES=314, PETRI_TRANSITIONS=238} [2024-06-04 15:33:13,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-04 15:33:13,183 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 238 transitions, 2097 flow [2024-06-04 15:33:13,183 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 15:33:13,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:13,183 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 15:33:13,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-04 15:33:13,184 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 15:33:13,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash 552991303, now seen corresponding path program 11 times [2024-06-04 15:33:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:13,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034247714] [2024-06-04 15:33:13,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:13,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:14,967 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 15:33:14,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:14,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034247714] [2024-06-04 15:33:14,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034247714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:14,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:14,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:14,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545028573] [2024-06-04 15:33:14,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:14,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:14,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:15,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:15,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 238 transitions, 2097 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 15:33:15,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:15,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:15,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:15,596 INFO L124 PetriNetUnfolderBase]: 732/1384 cut-off events. [2024-06-04 15:33:15,596 INFO L125 PetriNetUnfolderBase]: For 332298/332298 co-relation queries the response was YES. [2024-06-04 15:33:15,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11468 conditions, 1384 events. 732/1384 cut-off events. For 332298/332298 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7880 event pairs, 164 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 11325. Up to 1252 conditions per place. [2024-06-04 15:33:15,610 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 41 changer transitions 0/255 dead transitions. [2024-06-04 15:33:15,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 255 transitions, 2649 flow [2024-06-04 15:33:15,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:33:15,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:33:15,611 INFO L175 Difference]: Start difference. First operand has 314 places, 238 transitions, 2097 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:33:15,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 255 transitions, 2649 flow [2024-06-04 15:33:16,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 255 transitions, 2545 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-04 15:33:16,548 INFO L231 Difference]: Finished difference. Result has 304 places, 238 transitions, 2080 flow [2024-06-04 15:33:16,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2080, PETRI_PLACES=304, PETRI_TRANSITIONS=238} [2024-06-04 15:33:16,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-04 15:33:16,548 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 238 transitions, 2080 flow [2024-06-04 15:33:16,548 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 15:33:16,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:16,548 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 15:33:16,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-04 15:33:16,549 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 15:33:16,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:16,549 INFO L85 PathProgramCache]: Analyzing trace with hash -993777643, now seen corresponding path program 18 times [2024-06-04 15:33:16,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:16,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765124725] [2024-06-04 15:33:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:16,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:18,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:18,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765124725] [2024-06-04 15:33:18,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765124725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:18,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:18,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:18,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374149893] [2024-06-04 15:33:18,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:18,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:18,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:18,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:18,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:18,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:18,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 238 transitions, 2080 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 15:33:18,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:18,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:18,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:19,426 INFO L124 PetriNetUnfolderBase]: 727/1381 cut-off events. [2024-06-04 15:33:19,426 INFO L125 PetriNetUnfolderBase]: For 328823/328823 co-relation queries the response was YES. [2024-06-04 15:33:19,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10170 conditions, 1381 events. 727/1381 cut-off events. For 328823/328823 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7903 event pairs, 147 based on Foata normal form. 16/1396 useless extension candidates. Maximal degree in co-relation 10031. Up to 1097 conditions per place. [2024-06-04 15:33:19,439 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 52 changer transitions 16/263 dead transitions. [2024-06-04 15:33:19,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 263 transitions, 2692 flow [2024-06-04 15:33:19,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:19,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-04 15:33:19,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-04 15:33:19,440 INFO L175 Difference]: Start difference. First operand has 304 places, 238 transitions, 2080 flow. Second operand 12 states and 152 transitions. [2024-06-04 15:33:19,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 263 transitions, 2692 flow [2024-06-04 15:33:20,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 263 transitions, 2579 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-04 15:33:20,146 INFO L231 Difference]: Finished difference. Result has 306 places, 232 transitions, 2031 flow [2024-06-04 15:33:20,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2031, PETRI_PLACES=306, PETRI_TRANSITIONS=232} [2024-06-04 15:33:20,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-04 15:33:20,147 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 232 transitions, 2031 flow [2024-06-04 15:33:20,147 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 15:33:20,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:20,147 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 15:33:20,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-04 15:33:20,147 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 15:33:20,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1301179237, now seen corresponding path program 19 times [2024-06-04 15:33:20,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:20,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044654275] [2024-06-04 15:33:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:21,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:21,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044654275] [2024-06-04 15:33:21,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044654275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:21,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:21,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:21,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295535640] [2024-06-04 15:33:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:21,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:21,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:21,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:21,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 232 transitions, 2031 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 15:33:21,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:21,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:21,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:21,993 INFO L124 PetriNetUnfolderBase]: 724/1380 cut-off events. [2024-06-04 15:33:21,994 INFO L125 PetriNetUnfolderBase]: For 344788/344788 co-relation queries the response was YES. [2024-06-04 15:33:22,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11195 conditions, 1380 events. 724/1380 cut-off events. For 344788/344788 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7902 event pairs, 144 based on Foata normal form. 8/1387 useless extension candidates. Maximal degree in co-relation 11055. Up to 999 conditions per place. [2024-06-04 15:33:22,008 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 46 changer transitions 9/259 dead transitions. [2024-06-04 15:33:22,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 259 transitions, 2859 flow [2024-06-04 15:33:22,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:22,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-04 15:33:22,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-04 15:33:22,008 INFO L175 Difference]: Start difference. First operand has 306 places, 232 transitions, 2031 flow. Second operand 11 states and 144 transitions. [2024-06-04 15:33:22,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 259 transitions, 2859 flow [2024-06-04 15:33:22,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 259 transitions, 2731 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:22,833 INFO L231 Difference]: Finished difference. Result has 298 places, 228 transitions, 1974 flow [2024-06-04 15:33:22,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1911, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1974, PETRI_PLACES=298, PETRI_TRANSITIONS=228} [2024-06-04 15:33:22,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-04 15:33:22,834 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 228 transitions, 1974 flow [2024-06-04 15:33:22,834 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 15:33:22,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:22,834 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 15:33:22,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-04 15:33:22,834 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 15:33:22,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash 586855237, now seen corresponding path program 20 times [2024-06-04 15:33:22,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:22,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4506872] [2024-06-04 15:33:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:22,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:24,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:24,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4506872] [2024-06-04 15:33:24,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4506872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:24,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:24,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:24,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168955199] [2024-06-04 15:33:24,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:24,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:24,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:24,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:24,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 228 transitions, 1974 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 15:33:24,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:24,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:24,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:25,002 INFO L124 PetriNetUnfolderBase]: 719/1373 cut-off events. [2024-06-04 15:33:25,003 INFO L125 PetriNetUnfolderBase]: For 334864/334864 co-relation queries the response was YES. [2024-06-04 15:33:25,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10958 conditions, 1373 events. 719/1373 cut-off events. For 334864/334864 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7890 event pairs, 164 based on Foata normal form. 10/1382 useless extension candidates. Maximal degree in co-relation 10821. Up to 1183 conditions per place. [2024-06-04 15:33:25,015 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 34 changer transitions 19/251 dead transitions. [2024-06-04 15:33:25,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 251 transitions, 2554 flow [2024-06-04 15:33:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:25,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-04 15:33:25,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-04 15:33:25,016 INFO L175 Difference]: Start difference. First operand has 298 places, 228 transitions, 1974 flow. Second operand 12 states and 142 transitions. [2024-06-04 15:33:25,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 251 transitions, 2554 flow [2024-06-04 15:33:25,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 251 transitions, 2461 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:25,707 INFO L231 Difference]: Finished difference. Result has 296 places, 219 transitions, 1872 flow [2024-06-04 15:33:25,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1872, PETRI_PLACES=296, PETRI_TRANSITIONS=219} [2024-06-04 15:33:25,707 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-04 15:33:25,707 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 219 transitions, 1872 flow [2024-06-04 15:33:25,707 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 15:33:25,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:25,707 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 15:33:25,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-04 15:33:25,707 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 15:33:25,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1301294557, now seen corresponding path program 21 times [2024-06-04 15:33:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:25,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888336494] [2024-06-04 15:33:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:25,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:27,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:27,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888336494] [2024-06-04 15:33:27,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888336494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:27,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:27,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:27,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845067951] [2024-06-04 15:33:27,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:27,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:27,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:27,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:27,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:27,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 219 transitions, 1872 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 15:33:27,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:27,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:27,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:27,929 INFO L124 PetriNetUnfolderBase]: 726/1402 cut-off events. [2024-06-04 15:33:27,929 INFO L125 PetriNetUnfolderBase]: For 385817/385817 co-relation queries the response was YES. [2024-06-04 15:33:27,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12294 conditions, 1402 events. 726/1402 cut-off events. For 385817/385817 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8104 event pairs, 171 based on Foata normal form. 8/1409 useless extension candidates. Maximal degree in co-relation 12159. Up to 936 conditions per place. [2024-06-04 15:33:27,943 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 44 changer transitions 11/248 dead transitions. [2024-06-04 15:33:27,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 248 transitions, 2674 flow [2024-06-04 15:33:27,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:27,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-04 15:33:27,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-04 15:33:27,944 INFO L175 Difference]: Start difference. First operand has 296 places, 219 transitions, 1872 flow. Second operand 12 states and 151 transitions. [2024-06-04 15:33:27,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 248 transitions, 2674 flow [2024-06-04 15:33:28,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 248 transitions, 2590 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:28,867 INFO L231 Difference]: Finished difference. Result has 290 places, 215 transitions, 1857 flow [2024-06-04 15:33:28,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1857, PETRI_PLACES=290, PETRI_TRANSITIONS=215} [2024-06-04 15:33:28,867 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-04 15:33:28,867 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 215 transitions, 1857 flow [2024-06-04 15:33:28,868 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 15:33:28,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:28,868 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 15:33:28,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-04 15:33:28,868 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 15:33:28,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1296526013, now seen corresponding path program 12 times [2024-06-04 15:33:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:28,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845404465] [2024-06-04 15:33:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:28,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:30,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:30,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845404465] [2024-06-04 15:33:30,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845404465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:30,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:30,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:30,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061929186] [2024-06-04 15:33:30,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:30,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:30,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:30,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:30,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:30,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:30,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 215 transitions, 1857 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 15:33:30,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:30,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:30,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:31,131 INFO L124 PetriNetUnfolderBase]: 700/1348 cut-off events. [2024-06-04 15:33:31,131 INFO L125 PetriNetUnfolderBase]: For 333873/333873 co-relation queries the response was YES. [2024-06-04 15:33:31,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11788 conditions, 1348 events. 700/1348 cut-off events. For 333873/333873 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7726 event pairs, 184 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 11655. Up to 1204 conditions per place. [2024-06-04 15:33:31,144 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 40 changer transitions 0/232 dead transitions. [2024-06-04 15:33:31,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 232 transitions, 2363 flow [2024-06-04 15:33:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-04 15:33:31,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-04 15:33:31,145 INFO L175 Difference]: Start difference. First operand has 290 places, 215 transitions, 1857 flow. Second operand 11 states and 130 transitions. [2024-06-04 15:33:31,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 232 transitions, 2363 flow [2024-06-04 15:33:32,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 232 transitions, 2274 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:33:32,021 INFO L231 Difference]: Finished difference. Result has 284 places, 215 transitions, 1852 flow [2024-06-04 15:33:32,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1852, PETRI_PLACES=284, PETRI_TRANSITIONS=215} [2024-06-04 15:33:32,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-04 15:33:32,021 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 215 transitions, 1852 flow [2024-06-04 15:33:32,021 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 15:33:32,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:32,021 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 15:33:32,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-04 15:33:32,021 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 15:33:32,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1296705937, now seen corresponding path program 22 times [2024-06-04 15:33:32,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:32,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365126837] [2024-06-04 15:33:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:32,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:33,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:33,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365126837] [2024-06-04 15:33:33,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365126837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:33,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:33,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:33:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975561012] [2024-06-04 15:33:33,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:33,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:33:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:33,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:33:33,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:33:33,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:33,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 215 transitions, 1852 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 15:33:33,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:33,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:33,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:33,960 INFO L124 PetriNetUnfolderBase]: 687/1325 cut-off events. [2024-06-04 15:33:33,960 INFO L125 PetriNetUnfolderBase]: For 304818/304818 co-relation queries the response was YES. [2024-06-04 15:33:33,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10575 conditions, 1325 events. 687/1325 cut-off events. For 304818/304818 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7584 event pairs, 165 based on Foata normal form. 10/1334 useless extension candidates. Maximal degree in co-relation 10445. Up to 1111 conditions per place. [2024-06-04 15:33:33,972 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 186 selfloop transitions, 42 changer transitions 8/238 dead transitions. [2024-06-04 15:33:33,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 238 transitions, 2408 flow [2024-06-04 15:33:33,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:33,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:33,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-04 15:33:33,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-04 15:33:33,973 INFO L175 Difference]: Start difference. First operand has 284 places, 215 transitions, 1852 flow. Second operand 11 states and 142 transitions. [2024-06-04 15:33:33,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 238 transitions, 2408 flow [2024-06-04 15:33:34,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 238 transitions, 2302 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-04 15:33:34,696 INFO L231 Difference]: Finished difference. Result has 285 places, 211 transitions, 1804 flow [2024-06-04 15:33:34,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1804, PETRI_PLACES=285, PETRI_TRANSITIONS=211} [2024-06-04 15:33:34,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-04 15:33:34,697 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 211 transitions, 1804 flow [2024-06-04 15:33:34,697 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 15:33:34,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:34,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:34,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-04 15:33:34,697 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 15:33:34,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:34,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1166267533, now seen corresponding path program 23 times [2024-06-04 15:33:34,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:34,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697069225] [2024-06-04 15:33:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:34,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:36,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:36,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697069225] [2024-06-04 15:33:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697069225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:36,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:36,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624197634] [2024-06-04 15:33:36,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:36,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:36,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:36,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:36,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 211 transitions, 1804 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 15:33:36,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:36,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:36,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:37,059 INFO L124 PetriNetUnfolderBase]: 642/1238 cut-off events. [2024-06-04 15:33:37,059 INFO L125 PetriNetUnfolderBase]: For 266217/266217 co-relation queries the response was YES. [2024-06-04 15:33:37,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8774 conditions, 1238 events. 642/1238 cut-off events. For 266217/266217 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6974 event pairs, 145 based on Foata normal form. 16/1253 useless extension candidates. Maximal degree in co-relation 8643. Up to 1020 conditions per place. [2024-06-04 15:33:37,071 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 33 changer transitions 19/234 dead transitions. [2024-06-04 15:33:37,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 234 transitions, 2350 flow [2024-06-04 15:33:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 15:33:37,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 15:33:37,072 INFO L175 Difference]: Start difference. First operand has 285 places, 211 transitions, 1804 flow. Second operand 12 states and 143 transitions. [2024-06-04 15:33:37,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 234 transitions, 2350 flow [2024-06-04 15:33:37,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 234 transitions, 2245 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-04 15:33:37,591 INFO L231 Difference]: Finished difference. Result has 282 places, 203 transitions, 1713 flow [2024-06-04 15:33:37,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1713, PETRI_PLACES=282, PETRI_TRANSITIONS=203} [2024-06-04 15:33:37,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-04 15:33:37,591 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 203 transitions, 1713 flow [2024-06-04 15:33:37,591 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 15:33:37,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:37,592 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 15:33:37,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-04 15:33:37,592 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 15:33:37,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:37,592 INFO L85 PathProgramCache]: Analyzing trace with hash 716947681, now seen corresponding path program 24 times [2024-06-04 15:33:37,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:37,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761865490] [2024-06-04 15:33:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:37,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761865490] [2024-06-04 15:33:38,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761865490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:38,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:38,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:38,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927085336] [2024-06-04 15:33:38,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:38,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:38,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:38,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:39,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:39,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 203 transitions, 1713 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 15:33:39,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:39,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:39,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:39,615 INFO L124 PetriNetUnfolderBase]: 585/1123 cut-off events. [2024-06-04 15:33:39,615 INFO L125 PetriNetUnfolderBase]: For 193274/193274 co-relation queries the response was YES. [2024-06-04 15:33:39,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7385 conditions, 1123 events. 585/1123 cut-off events. For 193274/193274 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6142 event pairs, 118 based on Foata normal form. 10/1132 useless extension candidates. Maximal degree in co-relation 7255. Up to 943 conditions per place. [2024-06-04 15:33:39,624 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 41 changer transitions 11/225 dead transitions. [2024-06-04 15:33:39,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 225 transitions, 2237 flow [2024-06-04 15:33:39,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 15:33:39,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:33:39,625 INFO L175 Difference]: Start difference. First operand has 282 places, 203 transitions, 1713 flow. Second operand 12 states and 141 transitions. [2024-06-04 15:33:39,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 225 transitions, 2237 flow [2024-06-04 15:33:39,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 225 transitions, 2155 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 15:33:39,978 INFO L231 Difference]: Finished difference. Result has 271 places, 200 transitions, 1695 flow [2024-06-04 15:33:39,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1695, PETRI_PLACES=271, PETRI_TRANSITIONS=200} [2024-06-04 15:33:39,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-04 15:33:39,978 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 200 transitions, 1695 flow [2024-06-04 15:33:39,979 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 15:33:39,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:39,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:33:39,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-04 15:33:39,979 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 15:33:39,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:39,979 INFO L85 PathProgramCache]: Analyzing trace with hash 716943031, now seen corresponding path program 25 times [2024-06-04 15:33:39,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:39,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951736614] [2024-06-04 15:33:39,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:39,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:41,428 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 15:33:41,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951736614] [2024-06-04 15:33:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951736614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:41,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:41,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:41,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439615121] [2024-06-04 15:33:41,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:41,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:41,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:41,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:41,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:41,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:41,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 200 transitions, 1695 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 15:33:41,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:41,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:41,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:42,039 INFO L124 PetriNetUnfolderBase]: 551/1057 cut-off events. [2024-06-04 15:33:42,039 INFO L125 PetriNetUnfolderBase]: For 132827/132827 co-relation queries the response was YES. [2024-06-04 15:33:42,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6276 conditions, 1057 events. 551/1057 cut-off events. For 132827/132827 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5704 event pairs, 96 based on Foata normal form. 8/1064 useless extension candidates. Maximal degree in co-relation 6151. Up to 887 conditions per place. [2024-06-04 15:33:42,049 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 37 changer transitions 14/221 dead transitions. [2024-06-04 15:33:42,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 221 transitions, 2201 flow [2024-06-04 15:33:42,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:33:42,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:33:42,050 INFO L175 Difference]: Start difference. First operand has 271 places, 200 transitions, 1695 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:33:42,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 221 transitions, 2201 flow [2024-06-04 15:33:42,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 221 transitions, 2113 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:33:42,330 INFO L231 Difference]: Finished difference. Result has 269 places, 195 transitions, 1645 flow [2024-06-04 15:33:42,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1645, PETRI_PLACES=269, PETRI_TRANSITIONS=195} [2024-06-04 15:33:42,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-04 15:33:42,330 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 195 transitions, 1645 flow [2024-06-04 15:33:42,330 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 15:33:42,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:42,330 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 15:33:42,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-04 15:33:42,330 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 15:33:42,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:42,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1689315779, now seen corresponding path program 26 times [2024-06-04 15:33:42,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:42,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637735354] [2024-06-04 15:33:42,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:42,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:44,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:44,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637735354] [2024-06-04 15:33:44,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637735354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:44,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:44,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:44,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979857166] [2024-06-04 15:33:44,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:44,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:44,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:44,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:44,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:44,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:44,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 195 transitions, 1645 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 15:33:44,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:44,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:44,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:44,832 INFO L124 PetriNetUnfolderBase]: 575/1105 cut-off events. [2024-06-04 15:33:44,832 INFO L125 PetriNetUnfolderBase]: For 169824/169824 co-relation queries the response was YES. [2024-06-04 15:33:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7269 conditions, 1105 events. 575/1105 cut-off events. For 169824/169824 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5990 event pairs, 104 based on Foata normal form. 8/1112 useless extension candidates. Maximal degree in co-relation 7145. Up to 736 conditions per place. [2024-06-04 15:33:44,842 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 78 changer transitions 7/223 dead transitions. [2024-06-04 15:33:44,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 223 transitions, 2381 flow [2024-06-04 15:33:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-04 15:33:44,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-04 15:33:44,843 INFO L175 Difference]: Start difference. First operand has 269 places, 195 transitions, 1645 flow. Second operand 12 states and 146 transitions. [2024-06-04 15:33:44,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 223 transitions, 2381 flow [2024-06-04 15:33:45,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 223 transitions, 2279 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-04 15:33:45,216 INFO L231 Difference]: Finished difference. Result has 260 places, 195 transitions, 1710 flow [2024-06-04 15:33:45,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1710, PETRI_PLACES=260, PETRI_TRANSITIONS=195} [2024-06-04 15:33:45,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-04 15:33:45,217 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 195 transitions, 1710 flow [2024-06-04 15:33:45,217 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 15:33:45,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:45,217 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 15:33:45,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-04 15:33:45,217 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 15:33:45,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash -414469499, now seen corresponding path program 27 times [2024-06-04 15:33:45,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:45,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883857586] [2024-06-04 15:33:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:46,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883857586] [2024-06-04 15:33:46,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883857586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:46,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:46,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:46,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709841520] [2024-06-04 15:33:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:46,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:46,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:46,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:46,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:47,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:47,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 195 transitions, 1710 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 15:33:47,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:47,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:47,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:47,596 INFO L124 PetriNetUnfolderBase]: 544/1044 cut-off events. [2024-06-04 15:33:47,596 INFO L125 PetriNetUnfolderBase]: For 129077/129077 co-relation queries the response was YES. [2024-06-04 15:33:47,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6219 conditions, 1044 events. 544/1044 cut-off events. For 129077/129077 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5591 event pairs, 95 based on Foata normal form. 10/1053 useless extension candidates. Maximal degree in co-relation 6099. Up to 736 conditions per place. [2024-06-04 15:33:47,603 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 75 changer transitions 13/216 dead transitions. [2024-06-04 15:33:47,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 216 transitions, 2214 flow [2024-06-04 15:33:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-04 15:33:47,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-04 15:33:47,604 INFO L175 Difference]: Start difference. First operand has 260 places, 195 transitions, 1710 flow. Second operand 12 states and 140 transitions. [2024-06-04 15:33:47,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 216 transitions, 2214 flow [2024-06-04 15:33:47,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 216 transitions, 2089 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:47,833 INFO L231 Difference]: Finished difference. Result has 261 places, 191 transitions, 1709 flow [2024-06-04 15:33:47,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1709, PETRI_PLACES=261, PETRI_TRANSITIONS=191} [2024-06-04 15:33:47,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-04 15:33:47,833 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 191 transitions, 1709 flow [2024-06-04 15:33:47,833 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 15:33:47,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:47,834 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 15:33:47,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-04 15:33:47,834 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 15:33:47,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1918137821, now seen corresponding path program 28 times [2024-06-04 15:33:47,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:47,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469630022] [2024-06-04 15:33:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:47,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:50,007 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 15:33:50,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:50,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469630022] [2024-06-04 15:33:50,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469630022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:50,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:50,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:50,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631041128] [2024-06-04 15:33:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:50,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:50,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:50,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:50,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:50,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 191 transitions, 1709 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 15:33:50,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:50,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:50,812 INFO L124 PetriNetUnfolderBase]: 567/1093 cut-off events. [2024-06-04 15:33:50,812 INFO L125 PetriNetUnfolderBase]: For 162857/162857 co-relation queries the response was YES. [2024-06-04 15:33:50,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7458 conditions, 1093 events. 567/1093 cut-off events. For 162857/162857 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5893 event pairs, 97 based on Foata normal form. 8/1100 useless extension candidates. Maximal degree in co-relation 7339. Up to 564 conditions per place. [2024-06-04 15:33:50,824 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 73 changer transitions 11/218 dead transitions. [2024-06-04 15:33:50,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 218 transitions, 2441 flow [2024-06-04 15:33:50,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:33:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:33:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:33:50,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 15:33:50,825 INFO L175 Difference]: Start difference. First operand has 261 places, 191 transitions, 1709 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:33:50,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 218 transitions, 2441 flow [2024-06-04 15:33:51,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 218 transitions, 2287 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:51,200 INFO L231 Difference]: Finished difference. Result has 258 places, 187 transitions, 1676 flow [2024-06-04 15:33:51,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1676, PETRI_PLACES=258, PETRI_TRANSITIONS=187} [2024-06-04 15:33:51,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-04 15:33:51,200 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 187 transitions, 1676 flow [2024-06-04 15:33:51,200 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 15:33:51,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:51,200 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 15:33:51,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-04 15:33:51,200 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 15:33:51,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:51,201 INFO L85 PathProgramCache]: Analyzing trace with hash -23494333, now seen corresponding path program 13 times [2024-06-04 15:33:51,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:51,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675253231] [2024-06-04 15:33:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:51,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:52,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:52,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675253231] [2024-06-04 15:33:52,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675253231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:52,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:52,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:52,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395978509] [2024-06-04 15:33:52,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:52,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:52,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:52,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:52,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:52,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 187 transitions, 1676 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 15:33:52,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:52,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:52,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:53,333 INFO L124 PetriNetUnfolderBase]: 548/1052 cut-off events. [2024-06-04 15:33:53,333 INFO L125 PetriNetUnfolderBase]: For 141627/141627 co-relation queries the response was YES. [2024-06-04 15:33:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 1052 events. 548/1052 cut-off events. For 141627/141627 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5601 event pairs, 125 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7245. Up to 950 conditions per place. [2024-06-04 15:33:53,342 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 34 changer transitions 0/204 dead transitions. [2024-06-04 15:33:53,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 204 transitions, 2152 flow [2024-06-04 15:33:53,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:53,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-04 15:33:53,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-04 15:33:53,343 INFO L175 Difference]: Start difference. First operand has 258 places, 187 transitions, 1676 flow. Second operand 11 states and 129 transitions. [2024-06-04 15:33:53,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 204 transitions, 2152 flow [2024-06-04 15:33:53,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 204 transitions, 1977 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-04 15:33:53,630 INFO L231 Difference]: Finished difference. Result has 250 places, 188 transitions, 1603 flow [2024-06-04 15:33:53,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1603, PETRI_PLACES=250, PETRI_TRANSITIONS=188} [2024-06-04 15:33:53,630 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-04 15:33:53,630 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 188 transitions, 1603 flow [2024-06-04 15:33:53,630 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 15:33:53,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:53,630 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 15:33:53,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-04 15:33:53,630 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 15:33:53,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1913369277, now seen corresponding path program 14 times [2024-06-04 15:33:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772286541] [2024-06-04 15:33:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:53,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772286541] [2024-06-04 15:33:55,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772286541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:55,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:55,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:55,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627065917] [2024-06-04 15:33:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:55,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:55,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:55,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:55,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:55,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 188 transitions, 1603 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 15:33:55,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:55,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:55,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:56,023 INFO L124 PetriNetUnfolderBase]: 552/1060 cut-off events. [2024-06-04 15:33:56,024 INFO L125 PetriNetUnfolderBase]: For 134552/134552 co-relation queries the response was YES. [2024-06-04 15:33:56,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 1060 events. 552/1060 cut-off events. For 134552/134552 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5700 event pairs, 111 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7187. Up to 900 conditions per place. [2024-06-04 15:33:56,035 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 50 changer transitions 0/204 dead transitions. [2024-06-04 15:33:56,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 204 transitions, 2077 flow [2024-06-04 15:33:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:56,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:33:56,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:33:56,036 INFO L175 Difference]: Start difference. First operand has 250 places, 188 transitions, 1603 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:33:56,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 204 transitions, 2077 flow [2024-06-04 15:33:56,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 204 transitions, 1985 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:56,359 INFO L231 Difference]: Finished difference. Result has 252 places, 189 transitions, 1647 flow [2024-06-04 15:33:56,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1647, PETRI_PLACES=252, PETRI_TRANSITIONS=189} [2024-06-04 15:33:56,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 15:33:56,359 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 189 transitions, 1647 flow [2024-06-04 15:33:56,359 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 15:33:56,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:56,360 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 15:33:56,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-04 15:33:56,360 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 15:33:56,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:56,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1925350841, now seen corresponding path program 15 times [2024-06-04 15:33:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491191191] [2024-06-04 15:33:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:56,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:33:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:33:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:33:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491191191] [2024-06-04 15:33:57,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491191191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:33:57,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:33:57,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:33:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320679622] [2024-06-04 15:33:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:33:57,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:33:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:33:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:33:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:33:57,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:33:57,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 189 transitions, 1647 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 15:33:57,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:33:57,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:33:57,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:33:58,216 INFO L124 PetriNetUnfolderBase]: 564/1088 cut-off events. [2024-06-04 15:33:58,216 INFO L125 PetriNetUnfolderBase]: For 159629/159629 co-relation queries the response was YES. [2024-06-04 15:33:58,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 1088 events. 564/1088 cut-off events. For 159629/159629 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5857 event pairs, 131 based on Foata normal form. 8/1095 useless extension candidates. Maximal degree in co-relation 7363. Up to 977 conditions per place. [2024-06-04 15:33:58,226 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 14 changer transitions 13/210 dead transitions. [2024-06-04 15:33:58,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 210 transitions, 2182 flow [2024-06-04 15:33:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:33:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:33:58,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:33:58,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:33:58,227 INFO L175 Difference]: Start difference. First operand has 252 places, 189 transitions, 1647 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:33:58,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 210 transitions, 2182 flow [2024-06-04 15:33:58,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 210 transitions, 2054 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-04 15:33:58,569 INFO L231 Difference]: Finished difference. Result has 255 places, 187 transitions, 1533 flow [2024-06-04 15:33:58,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1533, PETRI_PLACES=255, PETRI_TRANSITIONS=187} [2024-06-04 15:33:58,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 15:33:58,570 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 187 transitions, 1533 flow [2024-06-04 15:33:58,570 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 15:33:58,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:33:58,570 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 15:33:58,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-04 15:33:58,570 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 15:33:58,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:33:58,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1325717511, now seen corresponding path program 16 times [2024-06-04 15:33:58,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:33:58,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524434140] [2024-06-04 15:33:58,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:33:58,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:33:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:00,971 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 15:34:00,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:00,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524434140] [2024-06-04 15:34:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524434140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:00,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:00,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154804570] [2024-06-04 15:34:00,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:00,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:01,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:01,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 187 transitions, 1533 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 15:34:01,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:01,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:01,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:01,678 INFO L124 PetriNetUnfolderBase]: 530/1018 cut-off events. [2024-06-04 15:34:01,678 INFO L125 PetriNetUnfolderBase]: For 141555/141555 co-relation queries the response was YES. [2024-06-04 15:34:01,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7107 conditions, 1018 events. 530/1018 cut-off events. For 141555/141555 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5409 event pairs, 103 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 6987. Up to 866 conditions per place. [2024-06-04 15:34:01,687 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 45 changer transitions 0/203 dead transitions. [2024-06-04 15:34:01,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 203 transitions, 2007 flow [2024-06-04 15:34:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:34:01,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:34:01,688 INFO L175 Difference]: Start difference. First operand has 255 places, 187 transitions, 1533 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:34:01,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 203 transitions, 2007 flow [2024-06-04 15:34:01,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 203 transitions, 1973 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:01,957 INFO L231 Difference]: Finished difference. Result has 254 places, 188 transitions, 1627 flow [2024-06-04 15:34:01,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1627, PETRI_PLACES=254, PETRI_TRANSITIONS=188} [2024-06-04 15:34:01,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:34:01,958 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 188 transitions, 1627 flow [2024-06-04 15:34:01,958 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 15:34:01,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:01,958 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 15:34:01,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-04 15:34:01,958 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 15:34:01,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:01,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1152817057, now seen corresponding path program 29 times [2024-06-04 15:34:01,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:01,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838372644] [2024-06-04 15:34:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:03,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:03,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838372644] [2024-06-04 15:34:03,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838372644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:03,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:03,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:03,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616701937] [2024-06-04 15:34:03,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:03,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:03,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:03,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:03,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:03,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:03,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 188 transitions, 1627 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 15:34:03,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:03,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:03,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:03,860 INFO L124 PetriNetUnfolderBase]: 546/1054 cut-off events. [2024-06-04 15:34:03,860 INFO L125 PetriNetUnfolderBase]: For 170939/170939 co-relation queries the response was YES. [2024-06-04 15:34:03,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7314 conditions, 1054 events. 546/1054 cut-off events. For 170939/170939 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5649 event pairs, 107 based on Foata normal form. 10/1063 useless extension candidates. Maximal degree in co-relation 7195. Up to 768 conditions per place. [2024-06-04 15:34:03,869 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 62 changer transitions 7/208 dead transitions. [2024-06-04 15:34:03,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 208 transitions, 2113 flow [2024-06-04 15:34:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-04 15:34:03,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-04 15:34:03,870 INFO L175 Difference]: Start difference. First operand has 254 places, 188 transitions, 1627 flow. Second operand 11 states and 135 transitions. [2024-06-04 15:34:03,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 208 transitions, 2113 flow [2024-06-04 15:34:04,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 208 transitions, 1962 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:04,201 INFO L231 Difference]: Finished difference. Result has 255 places, 185 transitions, 1586 flow [2024-06-04 15:34:04,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1586, PETRI_PLACES=255, PETRI_TRANSITIONS=185} [2024-06-04 15:34:04,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 15:34:04,201 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 185 transitions, 1586 flow [2024-06-04 15:34:04,201 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 15:34:04,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:04,202 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 15:34:04,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-04 15:34:04,202 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 15:34:04,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:04,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1252087001, now seen corresponding path program 17 times [2024-06-04 15:34:04,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:04,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721798273] [2024-06-04 15:34:04,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:04,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:05,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:05,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721798273] [2024-06-04 15:34:05,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721798273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:05,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:05,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:05,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426954555] [2024-06-04 15:34:05,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:05,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:05,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:05,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:05,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:05,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:05,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 185 transitions, 1586 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 15:34:05,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:05,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:05,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:06,226 INFO L124 PetriNetUnfolderBase]: 562/1086 cut-off events. [2024-06-04 15:34:06,226 INFO L125 PetriNetUnfolderBase]: For 190235/190235 co-relation queries the response was YES. [2024-06-04 15:34:06,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8560 conditions, 1086 events. 562/1086 cut-off events. For 190235/190235 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5878 event pairs, 129 based on Foata normal form. 2/1087 useless extension candidates. Maximal degree in co-relation 8441. Up to 896 conditions per place. [2024-06-04 15:34:06,236 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 36 changer transitions 0/208 dead transitions. [2024-06-04 15:34:06,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 208 transitions, 2312 flow [2024-06-04 15:34:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-04 15:34:06,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-04 15:34:06,237 INFO L175 Difference]: Start difference. First operand has 255 places, 185 transitions, 1586 flow. Second operand 11 states and 134 transitions. [2024-06-04 15:34:06,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 208 transitions, 2312 flow [2024-06-04 15:34:06,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 208 transitions, 2179 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-04 15:34:06,632 INFO L231 Difference]: Finished difference. Result has 254 places, 187 transitions, 1601 flow [2024-06-04 15:34:06,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1601, PETRI_PLACES=254, PETRI_TRANSITIONS=187} [2024-06-04 15:34:06,632 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:34:06,632 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 187 transitions, 1601 flow [2024-06-04 15:34:06,632 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 15:34:06,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:06,632 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 15:34:06,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-04 15:34:06,633 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 15:34:06,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:06,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2133441095, now seen corresponding path program 18 times [2024-06-04 15:34:06,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:06,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37477032] [2024-06-04 15:34:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:06,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37477032] [2024-06-04 15:34:08,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37477032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:08,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:08,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:08,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052689419] [2024-06-04 15:34:08,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:08,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:08,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:08,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 187 transitions, 1601 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 15:34:08,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:08,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:08,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:08,620 INFO L124 PetriNetUnfolderBase]: 582/1130 cut-off events. [2024-06-04 15:34:08,620 INFO L125 PetriNetUnfolderBase]: For 228338/228338 co-relation queries the response was YES. [2024-06-04 15:34:08,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8704 conditions, 1130 events. 582/1130 cut-off events. For 228338/228338 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6186 event pairs, 139 based on Foata normal form. 12/1141 useless extension candidates. Maximal degree in co-relation 8585. Up to 998 conditions per place. [2024-06-04 15:34:08,630 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 26 changer transitions 7/207 dead transitions. [2024-06-04 15:34:08,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 207 transitions, 2115 flow [2024-06-04 15:34:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:34:08,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:34:08,631 INFO L175 Difference]: Start difference. First operand has 254 places, 187 transitions, 1601 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:34:08,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 207 transitions, 2115 flow [2024-06-04 15:34:09,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 207 transitions, 2029 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-04 15:34:09,048 INFO L231 Difference]: Finished difference. Result has 258 places, 185 transitions, 1589 flow [2024-06-04 15:34:09,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1589, PETRI_PLACES=258, PETRI_TRANSITIONS=185} [2024-06-04 15:34:09,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-04 15:34:09,049 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 185 transitions, 1589 flow [2024-06-04 15:34:09,049 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 15:34:09,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:09,049 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 15:34:09,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-04 15:34:09,049 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 15:34:09,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:09,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1446473027, now seen corresponding path program 19 times [2024-06-04 15:34:09,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:09,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181720337] [2024-06-04 15:34:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:09,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:10,257 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 15:34:10,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:10,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181720337] [2024-06-04 15:34:10,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181720337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:10,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:10,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:10,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515928767] [2024-06-04 15:34:10,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:10,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:10,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:10,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:10,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 185 transitions, 1589 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 15:34:10,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:10,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:10,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:10,833 INFO L124 PetriNetUnfolderBase]: 562/1090 cut-off events. [2024-06-04 15:34:10,833 INFO L125 PetriNetUnfolderBase]: For 195185/195185 co-relation queries the response was YES. [2024-06-04 15:34:10,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 1090 events. 562/1090 cut-off events. For 195185/195185 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5901 event pairs, 141 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 8516. Up to 1038 conditions per place. [2024-06-04 15:34:10,844 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 16 changer transitions 0/200 dead transitions. [2024-06-04 15:34:10,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 200 transitions, 2053 flow [2024-06-04 15:34:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 15:34:10,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 15:34:10,845 INFO L175 Difference]: Start difference. First operand has 258 places, 185 transitions, 1589 flow. Second operand 11 states and 115 transitions. [2024-06-04 15:34:10,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 200 transitions, 2053 flow [2024-06-04 15:34:11,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 200 transitions, 1966 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:11,292 INFO L231 Difference]: Finished difference. Result has 259 places, 186 transitions, 1578 flow [2024-06-04 15:34:11,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1578, PETRI_PLACES=259, PETRI_TRANSITIONS=186} [2024-06-04 15:34:11,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-04 15:34:11,293 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 186 transitions, 1578 flow [2024-06-04 15:34:11,293 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 15:34:11,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:11,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:11,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-04 15:34:11,293 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 15:34:11,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:11,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1473567269, now seen corresponding path program 20 times [2024-06-04 15:34:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:11,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062780908] [2024-06-04 15:34:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:12,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062780908] [2024-06-04 15:34:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062780908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:12,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:12,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:12,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306179321] [2024-06-04 15:34:12,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:12,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:12,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:12,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:13,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:13,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 186 transitions, 1578 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 15:34:13,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:13,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:13,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:13,523 INFO L124 PetriNetUnfolderBase]: 559/1085 cut-off events. [2024-06-04 15:34:13,524 INFO L125 PetriNetUnfolderBase]: For 191263/191263 co-relation queries the response was YES. [2024-06-04 15:34:13,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1085 events. 559/1085 cut-off events. For 191263/191263 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5909 event pairs, 136 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 8276. Up to 1008 conditions per place. [2024-06-04 15:34:13,534 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 27 changer transitions 0/202 dead transitions. [2024-06-04 15:34:13,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 202 transitions, 2022 flow [2024-06-04 15:34:13,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:34:13,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:34:13,537 INFO L175 Difference]: Start difference. First operand has 259 places, 186 transitions, 1578 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:34:13,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 202 transitions, 2022 flow [2024-06-04 15:34:13,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 202 transitions, 1956 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:13,921 INFO L231 Difference]: Finished difference. Result has 261 places, 186 transitions, 1570 flow [2024-06-04 15:34:13,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1570, PETRI_PLACES=261, PETRI_TRANSITIONS=186} [2024-06-04 15:34:13,921 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-04 15:34:13,921 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 186 transitions, 1570 flow [2024-06-04 15:34:13,921 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 15:34:13,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:13,922 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 15:34:13,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-04 15:34:13,922 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 15:34:13,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:13,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1479816435, now seen corresponding path program 30 times [2024-06-04 15:34:13,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:13,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008465368] [2024-06-04 15:34:13,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:13,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:15,971 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 15:34:15,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:15,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008465368] [2024-06-04 15:34:15,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008465368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:15,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374911755] [2024-06-04 15:34:15,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:15,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:15,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:16,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:16,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 186 transitions, 1570 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 15:34:16,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:16,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:16,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:16,877 INFO L124 PetriNetUnfolderBase]: 575/1121 cut-off events. [2024-06-04 15:34:16,877 INFO L125 PetriNetUnfolderBase]: For 226815/226815 co-relation queries the response was YES. [2024-06-04 15:34:16,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8519 conditions, 1121 events. 575/1121 cut-off events. For 226815/226815 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6179 event pairs, 140 based on Foata normal form. 10/1130 useless extension candidates. Maximal degree in co-relation 8396. Up to 990 conditions per place. [2024-06-04 15:34:16,888 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 23 changer transitions 16/208 dead transitions. [2024-06-04 15:34:16,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 208 transitions, 2060 flow [2024-06-04 15:34:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 15:34:16,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:34:16,889 INFO L175 Difference]: Start difference. First operand has 261 places, 186 transitions, 1570 flow. Second operand 12 states and 141 transitions. [2024-06-04 15:34:16,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 208 transitions, 2060 flow [2024-06-04 15:34:17,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 208 transitions, 1978 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:17,330 INFO L231 Difference]: Finished difference. Result has 263 places, 180 transitions, 1493 flow [2024-06-04 15:34:17,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1493, PETRI_PLACES=263, PETRI_TRANSITIONS=180} [2024-06-04 15:34:17,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-04 15:34:17,331 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 180 transitions, 1493 flow [2024-06-04 15:34:17,331 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 15:34:17,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:17,331 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 15:34:17,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-04 15:34:17,331 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 15:34:17,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1473560325, now seen corresponding path program 31 times [2024-06-04 15:34:17,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:17,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373691425] [2024-06-04 15:34:17,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:17,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373691425] [2024-06-04 15:34:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373691425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:19,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:19,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:19,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317180808] [2024-06-04 15:34:19,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:19,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:19,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:19,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:19,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:19,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 180 transitions, 1493 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 15:34:19,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:19,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:19,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:20,248 INFO L124 PetriNetUnfolderBase]: 555/1089 cut-off events. [2024-06-04 15:34:20,248 INFO L125 PetriNetUnfolderBase]: For 231400/231400 co-relation queries the response was YES. [2024-06-04 15:34:20,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8364 conditions, 1089 events. 555/1089 cut-off events. For 231400/231400 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5978 event pairs, 142 based on Foata normal form. 10/1098 useless extension candidates. Maximal degree in co-relation 8240. Up to 976 conditions per place. [2024-06-04 15:34:20,257 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 166 selfloop transitions, 22 changer transitions 11/201 dead transitions. [2024-06-04 15:34:20,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 201 transitions, 1965 flow [2024-06-04 15:34:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:20,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 15:34:20,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 15:34:20,258 INFO L175 Difference]: Start difference. First operand has 263 places, 180 transitions, 1493 flow. Second operand 12 states and 137 transitions. [2024-06-04 15:34:20,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 201 transitions, 1965 flow [2024-06-04 15:34:20,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 201 transitions, 1909 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-04 15:34:20,653 INFO L231 Difference]: Finished difference. Result has 257 places, 177 transitions, 1458 flow [2024-06-04 15:34:20,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1458, PETRI_PLACES=257, PETRI_TRANSITIONS=177} [2024-06-04 15:34:20,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 15:34:20,653 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 177 transitions, 1458 flow [2024-06-04 15:34:20,654 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 15:34:20,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:20,654 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 15:34:20,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-04 15:34:20,654 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 15:34:20,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1473382695, now seen corresponding path program 32 times [2024-06-04 15:34:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672745383] [2024-06-04 15:34:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:20,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:22,070 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 15:34:22,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672745383] [2024-06-04 15:34:22,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672745383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:22,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:22,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:22,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968859097] [2024-06-04 15:34:22,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:22,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:22,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:22,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:22,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:22,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 177 transitions, 1458 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 15:34:22,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:22,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:22,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:22,778 INFO L124 PetriNetUnfolderBase]: 541/1067 cut-off events. [2024-06-04 15:34:22,778 INFO L125 PetriNetUnfolderBase]: For 208628/208628 co-relation queries the response was YES. [2024-06-04 15:34:22,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 1067 events. 541/1067 cut-off events. For 208628/208628 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5837 event pairs, 130 based on Foata normal form. 8/1074 useless extension candidates. Maximal degree in co-relation 7988. Up to 892 conditions per place. [2024-06-04 15:34:22,789 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 23 changer transitions 7/203 dead transitions. [2024-06-04 15:34:22,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 203 transitions, 2134 flow [2024-06-04 15:34:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:22,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-04 15:34:22,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-04 15:34:22,790 INFO L175 Difference]: Start difference. First operand has 257 places, 177 transitions, 1458 flow. Second operand 12 states and 143 transitions. [2024-06-04 15:34:22,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 203 transitions, 2134 flow [2024-06-04 15:34:23,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 203 transitions, 2082 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:34:23,166 INFO L231 Difference]: Finished difference. Result has 255 places, 175 transitions, 1444 flow [2024-06-04 15:34:23,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1444, PETRI_PLACES=255, PETRI_TRANSITIONS=175} [2024-06-04 15:34:23,167 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-04 15:34:23,167 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 175 transitions, 1444 flow [2024-06-04 15:34:23,167 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 15:34:23,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:23,167 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 15:34:23,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-04 15:34:23,167 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 15:34:23,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:23,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1933386041, now seen corresponding path program 21 times [2024-06-04 15:34:23,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:23,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674193806] [2024-06-04 15:34:23,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:23,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:24,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:24,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674193806] [2024-06-04 15:34:24,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674193806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:24,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:24,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:24,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213799075] [2024-06-04 15:34:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:24,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:24,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:24,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:24,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 175 transitions, 1444 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 15:34:24,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:24,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:24,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:25,021 INFO L124 PetriNetUnfolderBase]: 527/1037 cut-off events. [2024-06-04 15:34:25,021 INFO L125 PetriNetUnfolderBase]: For 182368/182368 co-relation queries the response was YES. [2024-06-04 15:34:25,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8036 conditions, 1037 events. 527/1037 cut-off events. For 182368/182368 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5635 event pairs, 138 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7916. Up to 990 conditions per place. [2024-06-04 15:34:25,032 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 172 selfloop transitions, 16 changer transitions 0/190 dead transitions. [2024-06-04 15:34:25,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 190 transitions, 1892 flow [2024-06-04 15:34:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 15:34:25,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-04 15:34:25,033 INFO L175 Difference]: Start difference. First operand has 255 places, 175 transitions, 1444 flow. Second operand 11 states and 116 transitions. [2024-06-04 15:34:25,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 190 transitions, 1892 flow [2024-06-04 15:34:25,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 190 transitions, 1847 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:25,414 INFO L231 Difference]: Finished difference. Result has 254 places, 176 transitions, 1475 flow [2024-06-04 15:34:25,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1475, PETRI_PLACES=254, PETRI_TRANSITIONS=176} [2024-06-04 15:34:25,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:34:25,415 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 176 transitions, 1475 flow [2024-06-04 15:34:25,415 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 15:34:25,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:25,415 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 15:34:25,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-04 15:34:25,415 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 15:34:25,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2139927845, now seen corresponding path program 22 times [2024-06-04 15:34:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:25,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013856224] [2024-06-04 15:34:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:25,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:26,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:26,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013856224] [2024-06-04 15:34:26,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013856224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:26,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:26,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:26,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480312904] [2024-06-04 15:34:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:26,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:26,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:26,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:27,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:27,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 176 transitions, 1475 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 15:34:27,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:27,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:27,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:27,492 INFO L124 PetriNetUnfolderBase]: 531/1045 cut-off events. [2024-06-04 15:34:27,493 INFO L125 PetriNetUnfolderBase]: For 179545/179545 co-relation queries the response was YES. [2024-06-04 15:34:27,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8091 conditions, 1045 events. 531/1045 cut-off events. For 179545/179545 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5686 event pairs, 136 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 7972. Up to 961 conditions per place. [2024-06-04 15:34:27,502 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 27 changer transitions 0/192 dead transitions. [2024-06-04 15:34:27,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 192 transitions, 1935 flow [2024-06-04 15:34:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:34:27,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:34:27,503 INFO L175 Difference]: Start difference. First operand has 254 places, 176 transitions, 1475 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:34:27,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 192 transitions, 1935 flow [2024-06-04 15:34:27,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 192 transitions, 1869 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:27,900 INFO L231 Difference]: Finished difference. Result has 256 places, 177 transitions, 1509 flow [2024-06-04 15:34:27,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1509, PETRI_PLACES=256, PETRI_TRANSITIONS=177} [2024-06-04 15:34:27,901 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-04 15:34:27,901 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 177 transitions, 1509 flow [2024-06-04 15:34:27,901 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 15:34:27,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:27,901 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 15:34:27,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-04 15:34:27,902 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 15:34:27,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash -30161007, now seen corresponding path program 33 times [2024-06-04 15:34:27,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:27,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799270814] [2024-06-04 15:34:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:27,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:29,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:29,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799270814] [2024-06-04 15:34:29,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799270814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:29,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:29,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:29,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703053504] [2024-06-04 15:34:29,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:29,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:29,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:29,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:29,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:29,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:29,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 177 transitions, 1509 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 15:34:29,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:29,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:29,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:29,996 INFO L124 PetriNetUnfolderBase]: 518/1022 cut-off events. [2024-06-04 15:34:29,997 INFO L125 PetriNetUnfolderBase]: For 175735/175735 co-relation queries the response was YES. [2024-06-04 15:34:30,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7180 conditions, 1022 events. 518/1022 cut-off events. For 175735/175735 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5555 event pairs, 125 based on Foata normal form. 10/1031 useless extension candidates. Maximal degree in co-relation 7060. Up to 908 conditions per place. [2024-06-04 15:34:30,006 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 20 changer transitions 13/198 dead transitions. [2024-06-04 15:34:30,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 198 transitions, 1975 flow [2024-06-04 15:34:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 15:34:30,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 15:34:30,007 INFO L175 Difference]: Start difference. First operand has 256 places, 177 transitions, 1509 flow. Second operand 12 states and 137 transitions. [2024-06-04 15:34:30,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 198 transitions, 1975 flow [2024-06-04 15:34:30,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 198 transitions, 1885 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:30,333 INFO L231 Difference]: Finished difference. Result has 259 places, 173 transitions, 1427 flow [2024-06-04 15:34:30,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1427, PETRI_PLACES=259, PETRI_TRANSITIONS=173} [2024-06-04 15:34:30,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-04 15:34:30,333 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 173 transitions, 1427 flow [2024-06-04 15:34:30,333 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 15:34:30,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:30,333 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 15:34:30,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-04 15:34:30,334 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 15:34:30,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1709750999, now seen corresponding path program 23 times [2024-06-04 15:34:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:30,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542671754] [2024-06-04 15:34:30,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:30,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:31,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:31,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:31,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542671754] [2024-06-04 15:34:31,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542671754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:31,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:31,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:31,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451979669] [2024-06-04 15:34:31,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:31,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:31,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:31,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:31,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:31,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:31,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 173 transitions, 1427 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 15:34:31,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:31,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:31,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:32,417 INFO L124 PetriNetUnfolderBase]: 497/979 cut-off events. [2024-06-04 15:34:32,417 INFO L125 PetriNetUnfolderBase]: For 148843/148843 co-relation queries the response was YES. [2024-06-04 15:34:32,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7031 conditions, 979 events. 497/979 cut-off events. For 148843/148843 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5263 event pairs, 119 based on Foata normal form. 2/980 useless extension candidates. Maximal degree in co-relation 6910. Up to 920 conditions per place. [2024-06-04 15:34:32,424 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 20 changer transitions 0/189 dead transitions. [2024-06-04 15:34:32,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 189 transitions, 1881 flow [2024-06-04 15:34:32,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:32,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:34:32,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:34:32,425 INFO L175 Difference]: Start difference. First operand has 259 places, 173 transitions, 1427 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:34:32,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 189 transitions, 1881 flow [2024-06-04 15:34:32,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 189 transitions, 1837 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:32,732 INFO L231 Difference]: Finished difference. Result has 254 places, 174 transitions, 1471 flow [2024-06-04 15:34:32,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1471, PETRI_PLACES=254, PETRI_TRANSITIONS=174} [2024-06-04 15:34:32,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:34:32,733 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 174 transitions, 1471 flow [2024-06-04 15:34:32,733 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 15:34:32,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:32,733 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 15:34:32,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-04 15:34:32,734 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 15:34:32,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1925054171, now seen corresponding path program 24 times [2024-06-04 15:34:32,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:32,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538406287] [2024-06-04 15:34:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:32,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:34,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:34,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538406287] [2024-06-04 15:34:34,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538406287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:34,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:34,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:34,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171279530] [2024-06-04 15:34:34,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:34,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:34,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:34,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:34,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 174 transitions, 1471 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 15:34:34,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:34,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:34,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:34,988 INFO L124 PetriNetUnfolderBase]: 501/987 cut-off events. [2024-06-04 15:34:34,988 INFO L125 PetriNetUnfolderBase]: For 149860/149860 co-relation queries the response was YES. [2024-06-04 15:34:34,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7149 conditions, 987 events. 501/987 cut-off events. For 149860/149860 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5336 event pairs, 119 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 7028. Up to 918 conditions per place. [2024-06-04 15:34:34,997 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 171 selfloop transitions, 18 changer transitions 0/191 dead transitions. [2024-06-04 15:34:34,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 191 transitions, 1931 flow [2024-06-04 15:34:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 15:34:34,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-04 15:34:34,998 INFO L175 Difference]: Start difference. First operand has 254 places, 174 transitions, 1471 flow. Second operand 12 states and 127 transitions. [2024-06-04 15:34:34,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 191 transitions, 1931 flow [2024-06-04 15:34:35,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 191 transitions, 1853 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:35,349 INFO L231 Difference]: Finished difference. Result has 257 places, 175 transitions, 1479 flow [2024-06-04 15:34:35,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1479, PETRI_PLACES=257, PETRI_TRANSITIONS=175} [2024-06-04 15:34:35,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-04 15:34:35,350 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 175 transitions, 1479 flow [2024-06-04 15:34:35,350 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 15:34:35,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:35,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:34:35,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-04 15:34:35,350 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 15:34:35,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:35,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1687541177, now seen corresponding path program 25 times [2024-06-04 15:34:35,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:35,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047807051] [2024-06-04 15:34:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:35,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:36,834 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 15:34:36,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047807051] [2024-06-04 15:34:36,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047807051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:36,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872181616] [2024-06-04 15:34:36,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:36,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:36,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:36,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 175 transitions, 1479 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 15:34:36,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:36,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:36,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:37,478 INFO L124 PetriNetUnfolderBase]: 507/1005 cut-off events. [2024-06-04 15:34:37,478 INFO L125 PetriNetUnfolderBase]: For 176303/176303 co-relation queries the response was YES. [2024-06-04 15:34:37,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6890 conditions, 1005 events. 507/1005 cut-off events. For 176303/176303 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5444 event pairs, 129 based on Foata normal form. 12/1016 useless extension candidates. Maximal degree in co-relation 6768. Up to 888 conditions per place. [2024-06-04 15:34:37,485 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 18 changer transitions 16/194 dead transitions. [2024-06-04 15:34:37,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 194 transitions, 1973 flow [2024-06-04 15:34:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:37,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-04 15:34:37,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-04 15:34:37,486 INFO L175 Difference]: Start difference. First operand has 257 places, 175 transitions, 1479 flow. Second operand 11 states and 124 transitions. [2024-06-04 15:34:37,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 194 transitions, 1973 flow [2024-06-04 15:34:37,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 194 transitions, 1897 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-04 15:34:37,857 INFO L231 Difference]: Finished difference. Result has 258 places, 168 transitions, 1396 flow [2024-06-04 15:34:37,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1403, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1396, PETRI_PLACES=258, PETRI_TRANSITIONS=168} [2024-06-04 15:34:37,857 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-04 15:34:37,857 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 168 transitions, 1396 flow [2024-06-04 15:34:37,857 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 15:34:37,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:37,857 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 15:34:37,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-04 15:34:37,858 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 15:34:37,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:37,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1710039299, now seen corresponding path program 26 times [2024-06-04 15:34:37,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:37,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634859447] [2024-06-04 15:34:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:39,153 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 15:34:39,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634859447] [2024-06-04 15:34:39,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634859447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:39,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:39,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776306355] [2024-06-04 15:34:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:39,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:39,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:39,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:39,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 168 transitions, 1396 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 15:34:39,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:39,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:39,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:39,667 INFO L124 PetriNetUnfolderBase]: 470/938 cut-off events. [2024-06-04 15:34:39,667 INFO L125 PetriNetUnfolderBase]: For 139717/139717 co-relation queries the response was YES. [2024-06-04 15:34:39,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6607 conditions, 938 events. 470/938 cut-off events. For 139717/139717 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5038 event pairs, 117 based on Foata normal form. 2/939 useless extension candidates. Maximal degree in co-relation 6484. Up to 879 conditions per place. [2024-06-04 15:34:39,675 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 20 changer transitions 0/184 dead transitions. [2024-06-04 15:34:39,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 184 transitions, 1842 flow [2024-06-04 15:34:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:39,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-04 15:34:39,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-04 15:34:39,676 INFO L175 Difference]: Start difference. First operand has 258 places, 168 transitions, 1396 flow. Second operand 11 states and 120 transitions. [2024-06-04 15:34:39,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 184 transitions, 1842 flow [2024-06-04 15:34:39,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 184 transitions, 1804 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:39,983 INFO L231 Difference]: Finished difference. Result has 256 places, 169 transitions, 1450 flow [2024-06-04 15:34:39,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1450, PETRI_PLACES=256, PETRI_TRANSITIONS=169} [2024-06-04 15:34:39,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-04 15:34:39,983 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 169 transitions, 1450 flow [2024-06-04 15:34:39,983 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 15:34:39,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:39,983 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 15:34:39,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-04 15:34:39,983 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 15:34:39,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:39,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1687532807, now seen corresponding path program 27 times [2024-06-04 15:34:39,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:39,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640224983] [2024-06-04 15:34:39,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:39,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:41,218 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 15:34:41,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:41,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640224983] [2024-06-04 15:34:41,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640224983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:41,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:41,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:41,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700516802] [2024-06-04 15:34:41,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:41,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:41,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:41,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:41,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:41,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:41,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 169 transitions, 1450 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 15:34:41,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:41,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:41,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:41,764 INFO L124 PetriNetUnfolderBase]: 482/966 cut-off events. [2024-06-04 15:34:41,764 INFO L125 PetriNetUnfolderBase]: For 162367/162367 co-relation queries the response was YES. [2024-06-04 15:34:41,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6795 conditions, 966 events. 482/966 cut-off events. For 162367/162367 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5257 event pairs, 123 based on Foata normal form. 8/973 useless extension candidates. Maximal degree in co-relation 6672. Up to 884 conditions per place. [2024-06-04 15:34:41,773 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 14 changer transitions 14/186 dead transitions. [2024-06-04 15:34:41,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 186 transitions, 1910 flow [2024-06-04 15:34:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-04 15:34:41,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-04 15:34:41,773 INFO L175 Difference]: Start difference. First operand has 256 places, 169 transitions, 1450 flow. Second operand 11 states and 119 transitions. [2024-06-04 15:34:41,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 186 transitions, 1910 flow [2024-06-04 15:34:42,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 186 transitions, 1828 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:42,122 INFO L231 Difference]: Finished difference. Result has 258 places, 164 transitions, 1365 flow [2024-06-04 15:34:42,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1365, PETRI_PLACES=258, PETRI_TRANSITIONS=164} [2024-06-04 15:34:42,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-04 15:34:42,122 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 164 transitions, 1365 flow [2024-06-04 15:34:42,122 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 15:34:42,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:42,123 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 15:34:42,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-04 15:34:42,123 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 15:34:42,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash 2139936215, now seen corresponding path program 28 times [2024-06-04 15:34:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:42,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726927748] [2024-06-04 15:34:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:42,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:43,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:43,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726927748] [2024-06-04 15:34:43,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726927748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:43,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:43,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:43,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268559661] [2024-06-04 15:34:43,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:43,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:43,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:43,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:43,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:44,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:44,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 164 transitions, 1365 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 15:34:44,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:44,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:44,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:44,617 INFO L124 PetriNetUnfolderBase]: 461/923 cut-off events. [2024-06-04 15:34:44,617 INFO L125 PetriNetUnfolderBase]: For 143434/143434 co-relation queries the response was YES. [2024-06-04 15:34:44,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6590 conditions, 923 events. 461/923 cut-off events. For 143434/143434 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4940 event pairs, 119 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 6466. Up to 838 conditions per place. [2024-06-04 15:34:44,625 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 25 changer transitions 0/180 dead transitions. [2024-06-04 15:34:44,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 180 transitions, 1807 flow [2024-06-04 15:34:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:44,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-04 15:34:44,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-04 15:34:44,626 INFO L175 Difference]: Start difference. First operand has 258 places, 164 transitions, 1365 flow. Second operand 11 states and 123 transitions. [2024-06-04 15:34:44,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 180 transitions, 1807 flow [2024-06-04 15:34:44,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 180 transitions, 1743 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:34:44,957 INFO L231 Difference]: Finished difference. Result has 252 places, 165 transitions, 1405 flow [2024-06-04 15:34:44,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1405, PETRI_PLACES=252, PETRI_TRANSITIONS=165} [2024-06-04 15:34:44,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 15:34:44,958 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 165 transitions, 1405 flow [2024-06-04 15:34:44,958 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 15:34:44,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:44,958 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 15:34:44,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-04 15:34:44,958 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 15:34:44,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:44,959 INFO L85 PathProgramCache]: Analyzing trace with hash -409827869, now seen corresponding path program 34 times [2024-06-04 15:34:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:44,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960452075] [2024-06-04 15:34:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:44,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:46,154 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 15:34:46,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:46,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960452075] [2024-06-04 15:34:46,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960452075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:46,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:46,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-04 15:34:46,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718289640] [2024-06-04 15:34:46,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:46,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-04 15:34:46,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-04 15:34:46,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-04 15:34:46,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:46,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 165 transitions, 1405 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 15:34:46,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:46,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:46,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:46,734 INFO L124 PetriNetUnfolderBase]: 477/959 cut-off events. [2024-06-04 15:34:46,735 INFO L125 PetriNetUnfolderBase]: For 168896/168896 co-relation queries the response was YES. [2024-06-04 15:34:46,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 959 events. 477/959 cut-off events. For 168896/168896 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5201 event pairs, 117 based on Foata normal form. 10/968 useless extension candidates. Maximal degree in co-relation 6524. Up to 714 conditions per place. [2024-06-04 15:34:46,743 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 45 changer transitions 14/184 dead transitions. [2024-06-04 15:34:46,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 184 transitions, 1835 flow [2024-06-04 15:34:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-04 15:34:46,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-04 15:34:46,744 INFO L175 Difference]: Start difference. First operand has 252 places, 165 transitions, 1405 flow. Second operand 11 states and 133 transitions. [2024-06-04 15:34:46,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 184 transitions, 1835 flow [2024-06-04 15:34:47,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 184 transitions, 1741 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-04 15:34:47,042 INFO L231 Difference]: Finished difference. Result has 254 places, 159 transitions, 1361 flow [2024-06-04 15:34:47,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1361, PETRI_PLACES=254, PETRI_TRANSITIONS=159} [2024-06-04 15:34:47,042 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-04 15:34:47,042 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 159 transitions, 1361 flow [2024-06-04 15:34:47,042 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 15:34:47,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:47,043 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 15:34:47,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-04 15:34:47,043 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 15:34:47,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:47,043 INFO L85 PathProgramCache]: Analyzing trace with hash -237092025, now seen corresponding path program 29 times [2024-06-04 15:34:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:47,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657250531] [2024-06-04 15:34:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:47,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:49,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:49,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657250531] [2024-06-04 15:34:49,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657250531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:49,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:49,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:49,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322943284] [2024-06-04 15:34:49,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:49,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:49,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:49,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:49,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 159 transitions, 1361 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 15:34:49,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:49,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:49,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:49,845 INFO L124 PetriNetUnfolderBase]: 447/901 cut-off events. [2024-06-04 15:34:49,846 INFO L125 PetriNetUnfolderBase]: For 140475/140475 co-relation queries the response was YES. [2024-06-04 15:34:49,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6520 conditions, 901 events. 447/901 cut-off events. For 140475/140475 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4844 event pairs, 111 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 6398. Up to 740 conditions per place. [2024-06-04 15:34:49,853 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 40 changer transitions 0/177 dead transitions. [2024-06-04 15:34:49,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 177 transitions, 2031 flow [2024-06-04 15:34:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:34:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:34:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-04 15:34:49,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-04 15:34:49,854 INFO L175 Difference]: Start difference. First operand has 254 places, 159 transitions, 1361 flow. Second operand 11 states and 128 transitions. [2024-06-04 15:34:49,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 177 transitions, 2031 flow [2024-06-04 15:34:50,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 177 transitions, 1919 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-04 15:34:50,144 INFO L231 Difference]: Finished difference. Result has 248 places, 161 transitions, 1443 flow [2024-06-04 15:34:50,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1443, PETRI_PLACES=248, PETRI_TRANSITIONS=161} [2024-06-04 15:34:50,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-04 15:34:50,145 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 161 transitions, 1443 flow [2024-06-04 15:34:50,145 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 15:34:50,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:50,145 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 15:34:50,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-04 15:34:50,145 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 15:34:50,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:50,145 INFO L85 PathProgramCache]: Analyzing trace with hash -243767069, now seen corresponding path program 35 times [2024-06-04 15:34:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:50,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155476349] [2024-06-04 15:34:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:50,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:51,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:51,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155476349] [2024-06-04 15:34:51,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155476349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:51,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:51,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:51,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614583726] [2024-06-04 15:34:51,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:51,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:51,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:51,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:51,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:51,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 161 transitions, 1443 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 15:34:51,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:51,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:51,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:52,403 INFO L124 PetriNetUnfolderBase]: 463/937 cut-off events. [2024-06-04 15:34:52,404 INFO L125 PetriNetUnfolderBase]: For 161345/161345 co-relation queries the response was YES. [2024-06-04 15:34:52,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6517 conditions, 937 events. 463/937 cut-off events. For 161345/161345 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5084 event pairs, 117 based on Foata normal form. 10/946 useless extension candidates. Maximal degree in co-relation 6398. Up to 716 conditions per place. [2024-06-04 15:34:52,411 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 43 changer transitions 11/183 dead transitions. [2024-06-04 15:34:52,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 183 transitions, 1881 flow [2024-06-04 15:34:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-04 15:34:52,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-04 15:34:52,412 INFO L175 Difference]: Start difference. First operand has 248 places, 161 transitions, 1443 flow. Second operand 12 states and 145 transitions. [2024-06-04 15:34:52,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 183 transitions, 1881 flow [2024-06-04 15:34:52,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 183 transitions, 1749 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-04 15:34:52,695 INFO L231 Difference]: Finished difference. Result has 252 places, 158 transitions, 1379 flow [2024-06-04 15:34:52,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1379, PETRI_PLACES=252, PETRI_TRANSITIONS=158} [2024-06-04 15:34:52,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-04 15:34:52,696 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 158 transitions, 1379 flow [2024-06-04 15:34:52,696 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 15:34:52,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:52,696 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 15:34:52,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-04 15:34:52,696 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 15:34:52,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:52,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1740886331, now seen corresponding path program 36 times [2024-06-04 15:34:52,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:52,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612876325] [2024-06-04 15:34:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:52,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:34:54,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:54,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612876325] [2024-06-04 15:34:54,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612876325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:54,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:54,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:54,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451091385] [2024-06-04 15:34:54,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:54,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:54,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:54,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:54,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:54,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:54,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 158 transitions, 1379 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 15:34:54,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:54,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:54,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:54,908 INFO L124 PetriNetUnfolderBase]: 455/925 cut-off events. [2024-06-04 15:34:54,908 INFO L125 PetriNetUnfolderBase]: For 163297/163297 co-relation queries the response was YES. [2024-06-04 15:34:54,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 925 events. 455/925 cut-off events. For 163297/163297 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5024 event pairs, 115 based on Foata normal form. 10/934 useless extension candidates. Maximal degree in co-relation 6268. Up to 733 conditions per place. [2024-06-04 15:34:54,916 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 34 changer transitions 16/179 dead transitions. [2024-06-04 15:34:54,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 179 transitions, 1805 flow [2024-06-04 15:34:54,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-04 15:34:54,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-04 15:34:54,917 INFO L175 Difference]: Start difference. First operand has 252 places, 158 transitions, 1379 flow. Second operand 12 states and 141 transitions. [2024-06-04 15:34:54,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 179 transitions, 1805 flow [2024-06-04 15:34:55,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 179 transitions, 1696 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-04 15:34:55,232 INFO L231 Difference]: Finished difference. Result has 250 places, 152 transitions, 1301 flow [2024-06-04 15:34:55,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1301, PETRI_PLACES=250, PETRI_TRANSITIONS=152} [2024-06-04 15:34:55,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-04 15:34:55,233 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 152 transitions, 1301 flow [2024-06-04 15:34:55,233 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 15:34:55,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:55,233 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 15:34:55,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-04 15:34:55,233 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 15:34:55,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:55,233 INFO L85 PathProgramCache]: Analyzing trace with hash -410005499, now seen corresponding path program 37 times [2024-06-04 15:34:55,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:55,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221892871] [2024-06-04 15:34:55,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:55,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:34:56,875 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 15:34:56,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:34:56,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221892871] [2024-06-04 15:34:56,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221892871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:34:56,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:34:56,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:34:56,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654897575] [2024-06-04 15:34:56,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:34:56,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:34:56,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:34:56,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:34:56,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:34:57,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:34:57,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 152 transitions, 1301 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 15:34:57,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:34:57,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:34:57,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:34:57,513 INFO L124 PetriNetUnfolderBase]: 431/885 cut-off events. [2024-06-04 15:34:57,513 INFO L125 PetriNetUnfolderBase]: For 155547/155547 co-relation queries the response was YES. [2024-06-04 15:34:57,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6186 conditions, 885 events. 431/885 cut-off events. For 155547/155547 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4800 event pairs, 111 based on Foata normal form. 8/892 useless extension candidates. Maximal degree in co-relation 6066. Up to 690 conditions per place. [2024-06-04 15:34:57,520 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 36 changer transitions 14/171 dead transitions. [2024-06-04 15:34:57,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 171 transitions, 1697 flow [2024-06-04 15:34:57,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:34:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:34:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-04 15:34:57,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-04 15:34:57,521 INFO L175 Difference]: Start difference. First operand has 250 places, 152 transitions, 1301 flow. Second operand 12 states and 135 transitions. [2024-06-04 15:34:57,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 171 transitions, 1697 flow [2024-06-04 15:34:57,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 171 transitions, 1617 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:34:57,754 INFO L231 Difference]: Finished difference. Result has 244 places, 147 transitions, 1267 flow [2024-06-04 15:34:57,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1267, PETRI_PLACES=244, PETRI_TRANSITIONS=147} [2024-06-04 15:34:57,754 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-04 15:34:57,755 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 147 transitions, 1267 flow [2024-06-04 15:34:57,755 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 15:34:57,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:34:57,755 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 15:34:57,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-04 15:34:57,755 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 15:34:57,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:34:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2139690261, now seen corresponding path program 38 times [2024-06-04 15:34:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:34:57,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996091986] [2024-06-04 15:34:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:34:57,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:34:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:01,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:01,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996091986] [2024-06-04 15:35:01,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996091986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:01,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:01,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:01,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498678761] [2024-06-04 15:35:01,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:01,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:01,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:01,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:01,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:01,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:01,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 147 transitions, 1267 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 15:35:01,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:01,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:01,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:02,332 INFO L124 PetriNetUnfolderBase]: 426/874 cut-off events. [2024-06-04 15:35:02,332 INFO L125 PetriNetUnfolderBase]: For 152222/152222 co-relation queries the response was YES. [2024-06-04 15:35:02,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6045 conditions, 874 events. 426/874 cut-off events. For 152222/152222 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4704 event pairs, 117 based on Foata normal form. 10/883 useless extension candidates. Maximal degree in co-relation 5928. Up to 756 conditions per place. [2024-06-04 15:35:02,339 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 132 selfloop transitions, 23 changer transitions 11/168 dead transitions. [2024-06-04 15:35:02,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 168 transitions, 1671 flow [2024-06-04 15:35:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-04 15:35:02,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-04 15:35:02,340 INFO L175 Difference]: Start difference. First operand has 244 places, 147 transitions, 1267 flow. Second operand 12 states and 137 transitions. [2024-06-04 15:35:02,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 168 transitions, 1671 flow [2024-06-04 15:35:02,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 168 transitions, 1591 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:02,581 INFO L231 Difference]: Finished difference. Result has 237 places, 144 transitions, 1216 flow [2024-06-04 15:35:02,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1187, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1216, PETRI_PLACES=237, PETRI_TRANSITIONS=144} [2024-06-04 15:35:02,581 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-04 15:35:02,582 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 144 transitions, 1216 flow [2024-06-04 15:35:02,582 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 15:35:02,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:02,582 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 15:35:02,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-04 15:35:02,582 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 15:35:02,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:02,582 INFO L85 PathProgramCache]: Analyzing trace with hash -243587145, now seen corresponding path program 30 times [2024-06-04 15:35:02,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:02,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642340062] [2024-06-04 15:35:02,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:02,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:04,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:04,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:04,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642340062] [2024-06-04 15:35:04,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642340062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:04,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:04,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:04,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477267346] [2024-06-04 15:35:04,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:04,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:04,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:04,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:04,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 144 transitions, 1216 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 15:35:04,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:04,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:04,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:05,098 INFO L124 PetriNetUnfolderBase]: 397/819 cut-off events. [2024-06-04 15:35:05,099 INFO L125 PetriNetUnfolderBase]: For 108497/108497 co-relation queries the response was YES. [2024-06-04 15:35:05,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5538 conditions, 819 events. 397/819 cut-off events. For 108497/108497 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4353 event pairs, 110 based on Foata normal form. 2/820 useless extension candidates. Maximal degree in co-relation 5424. Up to 695 conditions per place. [2024-06-04 15:35:05,104 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 32 changer transitions 0/159 dead transitions. [2024-06-04 15:35:05,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 159 transitions, 1570 flow [2024-06-04 15:35:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:35:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:35:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-04 15:35:05,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-04 15:35:05,105 INFO L175 Difference]: Start difference. First operand has 237 places, 144 transitions, 1216 flow. Second operand 11 states and 126 transitions. [2024-06-04 15:35:05,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 159 transitions, 1570 flow [2024-06-04 15:35:05,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 159 transitions, 1488 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:05,292 INFO L231 Difference]: Finished difference. Result has 234 places, 144 transitions, 1202 flow [2024-06-04 15:35:05,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1202, PETRI_PLACES=234, PETRI_TRANSITIONS=144} [2024-06-04 15:35:05,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-04 15:35:05,293 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 144 transitions, 1202 flow [2024-06-04 15:35:05,293 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 15:35:05,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:05,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:05,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-04 15:35:05,293 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 15:35:05,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:05,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2133256521, now seen corresponding path program 39 times [2024-06-04 15:35:05,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:05,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408490986] [2024-06-04 15:35:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:05,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:06,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:06,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408490986] [2024-06-04 15:35:06,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408490986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:06,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:06,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:06,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667740482] [2024-06-04 15:35:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:06,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:06,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:06,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:06,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 144 transitions, 1202 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 15:35:06,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:06,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:06,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:07,377 INFO L124 PetriNetUnfolderBase]: 438/906 cut-off events. [2024-06-04 15:35:07,377 INFO L125 PetriNetUnfolderBase]: For 157050/157050 co-relation queries the response was YES. [2024-06-04 15:35:07,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6531 conditions, 906 events. 438/906 cut-off events. For 157050/157050 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4944 event pairs, 125 based on Foata normal form. 8/913 useless extension candidates. Maximal degree in co-relation 6418. Up to 733 conditions per place. [2024-06-04 15:35:07,384 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 21 changer transitions 8/169 dead transitions. [2024-06-04 15:35:07,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 169 transitions, 1788 flow [2024-06-04 15:35:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:35:07,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:35:07,384 INFO L175 Difference]: Start difference. First operand has 234 places, 144 transitions, 1202 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:35:07,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 169 transitions, 1788 flow [2024-06-04 15:35:07,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 169 transitions, 1722 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-04 15:35:07,634 INFO L231 Difference]: Finished difference. Result has 236 places, 141 transitions, 1161 flow [2024-06-04 15:35:07,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1161, PETRI_PLACES=236, PETRI_TRANSITIONS=141} [2024-06-04 15:35:07,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-04 15:35:07,634 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 141 transitions, 1161 flow [2024-06-04 15:35:07,635 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 15:35:07,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:07,635 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 15:35:07,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-04 15:35:07,635 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 15:35:07,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash -243771719, now seen corresponding path program 40 times [2024-06-04 15:35:07,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:07,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354662893] [2024-06-04 15:35:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:07,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:09,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:09,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354662893] [2024-06-04 15:35:09,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354662893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:09,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:09,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332491166] [2024-06-04 15:35:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:09,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:09,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:09,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:09,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:09,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 141 transitions, 1161 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 15:35:09,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:09,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:09,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:09,833 INFO L124 PetriNetUnfolderBase]: 446/926 cut-off events. [2024-06-04 15:35:09,834 INFO L125 PetriNetUnfolderBase]: For 180822/180822 co-relation queries the response was YES. [2024-06-04 15:35:09,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7076 conditions, 926 events. 446/926 cut-off events. For 180822/180822 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5065 event pairs, 136 based on Foata normal form. 8/933 useless extension candidates. Maximal degree in co-relation 6962. Up to 694 conditions per place. [2024-06-04 15:35:09,841 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 30 changer transitions 8/167 dead transitions. [2024-06-04 15:35:09,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 167 transitions, 1749 flow [2024-06-04 15:35:09,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:09,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:09,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-04 15:35:09,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-04 15:35:09,842 INFO L175 Difference]: Start difference. First operand has 236 places, 141 transitions, 1161 flow. Second operand 12 states and 144 transitions. [2024-06-04 15:35:09,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 167 transitions, 1749 flow [2024-06-04 15:35:10,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 167 transitions, 1695 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:35:10,142 INFO L231 Difference]: Finished difference. Result has 233 places, 138 transitions, 1157 flow [2024-06-04 15:35:10,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1157, PETRI_PLACES=233, PETRI_TRANSITIONS=138} [2024-06-04 15:35:10,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-04 15:35:10,143 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 138 transitions, 1157 flow [2024-06-04 15:35:10,143 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 15:35:10,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:10,143 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 15:35:10,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-04 15:35:10,143 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 15:35:10,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:10,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1687244507, now seen corresponding path program 31 times [2024-06-04 15:35:10,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:10,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547876259] [2024-06-04 15:35:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:10,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:11,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:11,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547876259] [2024-06-04 15:35:11,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547876259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:11,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:11,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:11,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052159191] [2024-06-04 15:35:11,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:11,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:11,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:11,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:11,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:11,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:11,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 138 transitions, 1157 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 15:35:11,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:11,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:11,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:12,047 INFO L124 PetriNetUnfolderBase]: 424/880 cut-off events. [2024-06-04 15:35:12,047 INFO L125 PetriNetUnfolderBase]: For 146973/146973 co-relation queries the response was YES. [2024-06-04 15:35:12,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6668 conditions, 880 events. 424/880 cut-off events. For 146973/146973 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4737 event pairs, 145 based on Foata normal form. 2/881 useless extension candidates. Maximal degree in co-relation 6556. Up to 825 conditions per place. [2024-06-04 15:35:12,052 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 133 selfloop transitions, 17 changer transitions 0/152 dead transitions. [2024-06-04 15:35:12,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 152 transitions, 1489 flow [2024-06-04 15:35:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:35:12,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:35:12,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 15:35:12,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-04 15:35:12,053 INFO L175 Difference]: Start difference. First operand has 233 places, 138 transitions, 1157 flow. Second operand 11 states and 116 transitions. [2024-06-04 15:35:12,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 152 transitions, 1489 flow [2024-06-04 15:35:12,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 152 transitions, 1425 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:12,316 INFO L231 Difference]: Finished difference. Result has 230 places, 138 transitions, 1131 flow [2024-06-04 15:35:12,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1131, PETRI_PLACES=230, PETRI_TRANSITIONS=138} [2024-06-04 15:35:12,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-04 15:35:12,316 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 138 transitions, 1131 flow [2024-06-04 15:35:12,316 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 15:35:12,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:12,316 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 15:35:12,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-04 15:35:12,316 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 15:35:12,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:12,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1319223817, now seen corresponding path program 41 times [2024-06-04 15:35:12,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:12,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111409932] [2024-06-04 15:35:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:12,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:13,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:13,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111409932] [2024-06-04 15:35:13,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111409932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:13,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:13,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:13,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741147312] [2024-06-04 15:35:13,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:13,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:13,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:13,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:13,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:14,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:14,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 138 transitions, 1131 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 15:35:14,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:14,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:14,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:14,654 INFO L124 PetriNetUnfolderBase]: 411/857 cut-off events. [2024-06-04 15:35:14,654 INFO L125 PetriNetUnfolderBase]: For 137068/137068 co-relation queries the response was YES. [2024-06-04 15:35:14,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5745 conditions, 857 events. 411/857 cut-off events. For 137068/137068 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4607 event pairs, 126 based on Foata normal form. 10/866 useless extension candidates. Maximal degree in co-relation 5634. Up to 681 conditions per place. [2024-06-04 15:35:14,660 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 29 changer transitions 11/159 dead transitions. [2024-06-04 15:35:14,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 159 transitions, 1517 flow [2024-06-04 15:35:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-04 15:35:14,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-04 15:35:14,660 INFO L175 Difference]: Start difference. First operand has 230 places, 138 transitions, 1131 flow. Second operand 12 states and 139 transitions. [2024-06-04 15:35:14,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 159 transitions, 1517 flow [2024-06-04 15:35:14,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 159 transitions, 1308 flow, removed 24 selfloop flow, removed 17 redundant places. [2024-06-04 15:35:14,880 INFO L231 Difference]: Finished difference. Result has 225 places, 135 transitions, 965 flow [2024-06-04 15:35:14,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=965, PETRI_PLACES=225, PETRI_TRANSITIONS=135} [2024-06-04 15:35:14,881 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-04 15:35:14,881 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 135 transitions, 965 flow [2024-06-04 15:35:14,881 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 15:35:14,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:14,881 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 15:35:14,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-04 15:35:14,881 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 15:35:14,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2133434151, now seen corresponding path program 42 times [2024-06-04 15:35:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:14,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689492959] [2024-06-04 15:35:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:14,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:16,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:16,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689492959] [2024-06-04 15:35:16,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689492959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:16,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:16,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:16,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241595978] [2024-06-04 15:35:16,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:16,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:16,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:16,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:16,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:16,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:16,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 135 transitions, 965 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 15:35:16,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:16,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:16,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:17,235 INFO L124 PetriNetUnfolderBase]: 372/784 cut-off events. [2024-06-04 15:35:17,235 INFO L125 PetriNetUnfolderBase]: For 105506/105506 co-relation queries the response was YES. [2024-06-04 15:35:17,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 784 events. 372/784 cut-off events. For 105506/105506 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4144 event pairs, 107 based on Foata normal form. 10/793 useless extension candidates. Maximal degree in co-relation 4288. Up to 675 conditions per place. [2024-06-04 15:35:17,241 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 19 changer transitions 11/155 dead transitions. [2024-06-04 15:35:17,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 155 transitions, 1331 flow [2024-06-04 15:35:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-04 15:35:17,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-04 15:35:17,242 INFO L175 Difference]: Start difference. First operand has 225 places, 135 transitions, 965 flow. Second operand 12 states and 134 transitions. [2024-06-04 15:35:17,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 155 transitions, 1331 flow [2024-06-04 15:35:17,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 155 transitions, 1267 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:17,412 INFO L231 Difference]: Finished difference. Result has 222 places, 131 transitions, 914 flow [2024-06-04 15:35:17,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=914, PETRI_PLACES=222, PETRI_TRANSITIONS=131} [2024-06-04 15:35:17,413 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-04 15:35:17,413 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 131 transitions, 914 flow [2024-06-04 15:35:17,413 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 15:35:17,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:17,413 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 15:35:17,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-04 15:35:17,413 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 15:35:17,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:17,413 INFO L85 PathProgramCache]: Analyzing trace with hash -317337961, now seen corresponding path program 1 times [2024-06-04 15:35:17,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:17,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438293512] [2024-06-04 15:35:17,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:17,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:19,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:19,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438293512] [2024-06-04 15:35:19,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438293512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:19,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:19,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:19,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084250498] [2024-06-04 15:35:19,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:19,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:19,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:19,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:19,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:19,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 131 transitions, 914 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 15:35:19,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:19,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:19,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:19,953 INFO L124 PetriNetUnfolderBase]: 354/754 cut-off events. [2024-06-04 15:35:19,953 INFO L125 PetriNetUnfolderBase]: For 90665/90665 co-relation queries the response was YES. [2024-06-04 15:35:19,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4232 conditions, 754 events. 354/754 cut-off events. For 90665/90665 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3998 event pairs, 95 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 4128. Up to 461 conditions per place. [2024-06-04 15:35:19,958 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 45 changer transitions 12/152 dead transitions. [2024-06-04 15:35:19,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 152 transitions, 1274 flow [2024-06-04 15:35:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-04 15:35:19,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-04 15:35:19,959 INFO L175 Difference]: Start difference. First operand has 222 places, 131 transitions, 914 flow. Second operand 12 states and 138 transitions. [2024-06-04 15:35:19,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 152 transitions, 1274 flow [2024-06-04 15:35:20,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 152 transitions, 1201 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-04 15:35:20,105 INFO L231 Difference]: Finished difference. Result has 217 places, 127 transitions, 916 flow [2024-06-04 15:35:20,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=916, PETRI_PLACES=217, PETRI_TRANSITIONS=127} [2024-06-04 15:35:20,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-04 15:35:20,105 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 127 transitions, 916 flow [2024-06-04 15:35:20,105 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 15:35:20,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:20,105 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 15:35:20,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-04 15:35:20,105 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 15:35:20,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:20,105 INFO L85 PathProgramCache]: Analyzing trace with hash -116248711, now seen corresponding path program 2 times [2024-06-04 15:35:20,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:20,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336959905] [2024-06-04 15:35:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:20,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:22,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:22,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336959905] [2024-06-04 15:35:22,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336959905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:22,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:22,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:22,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274302693] [2024-06-04 15:35:22,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:22,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:22,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:22,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:22,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:22,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:22,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 127 transitions, 916 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 15:35:22,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:22,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:22,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:22,694 INFO L124 PetriNetUnfolderBase]: 330/702 cut-off events. [2024-06-04 15:35:22,694 INFO L125 PetriNetUnfolderBase]: For 69633/69633 co-relation queries the response was YES. [2024-06-04 15:35:22,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3559 conditions, 702 events. 330/702 cut-off events. For 69633/69633 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3652 event pairs, 88 based on Foata normal form. 6/707 useless extension candidates. Maximal degree in co-relation 3458. Up to 418 conditions per place. [2024-06-04 15:35:22,698 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 43 changer transitions 11/145 dead transitions. [2024-06-04 15:35:22,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 145 transitions, 1250 flow [2024-06-04 15:35:22,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:35:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:35:22,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-04 15:35:22,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-04 15:35:22,699 INFO L175 Difference]: Start difference. First operand has 217 places, 127 transitions, 916 flow. Second operand 11 states and 127 transitions. [2024-06-04 15:35:22,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 145 transitions, 1250 flow [2024-06-04 15:35:22,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 145 transitions, 1152 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:35:22,810 INFO L231 Difference]: Finished difference. Result has 210 places, 122 transitions, 880 flow [2024-06-04 15:35:22,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=880, PETRI_PLACES=210, PETRI_TRANSITIONS=122} [2024-06-04 15:35:22,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-04 15:35:22,811 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 122 transitions, 880 flow [2024-06-04 15:35:22,811 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 15:35:22,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:22,811 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 15:35:22,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-04 15:35:22,811 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 15:35:22,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1175617845, now seen corresponding path program 3 times [2024-06-04 15:35:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:22,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719592800] [2024-06-04 15:35:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:25,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719592800] [2024-06-04 15:35:25,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719592800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:25,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:25,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:25,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417712606] [2024-06-04 15:35:25,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:25,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:25,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:25,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:25,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:25,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 122 transitions, 880 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 15:35:25,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:25,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:25,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:26,239 INFO L124 PetriNetUnfolderBase]: 302/642 cut-off events. [2024-06-04 15:35:26,239 INFO L125 PetriNetUnfolderBase]: For 48355/48355 co-relation queries the response was YES. [2024-06-04 15:35:26,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 642 events. 302/642 cut-off events. For 48355/48355 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3255 event pairs, 68 based on Foata normal form. 6/647 useless extension candidates. Maximal degree in co-relation 2806. Up to 384 conditions per place. [2024-06-04 15:35:26,244 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 34 changer transitions 23/142 dead transitions. [2024-06-04 15:35:26,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 142 transitions, 1212 flow [2024-06-04 15:35:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:35:26,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:35:26,244 INFO L175 Difference]: Start difference. First operand has 210 places, 122 transitions, 880 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:35:26,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 142 transitions, 1212 flow [2024-06-04 15:35:26,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 142 transitions, 1116 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-04 15:35:26,323 INFO L231 Difference]: Finished difference. Result has 202 places, 112 transitions, 796 flow [2024-06-04 15:35:26,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=796, PETRI_PLACES=202, PETRI_TRANSITIONS=112} [2024-06-04 15:35:26,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-04 15:35:26,323 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 112 transitions, 796 flow [2024-06-04 15:35:26,323 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 15:35:26,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:26,324 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 15:35:26,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-04 15:35:26,324 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 15:35:26,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:26,324 INFO L85 PathProgramCache]: Analyzing trace with hash -255379751, now seen corresponding path program 4 times [2024-06-04 15:35:26,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:26,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757414833] [2024-06-04 15:35:26,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:26,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:28,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:28,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:28,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757414833] [2024-06-04 15:35:28,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757414833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:28,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:28,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:28,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999500760] [2024-06-04 15:35:28,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:28,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:28,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:28,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:28,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:28,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:28,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 112 transitions, 796 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 15:35:28,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:28,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:28,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:28,967 INFO L124 PetriNetUnfolderBase]: 284/605 cut-off events. [2024-06-04 15:35:28,967 INFO L125 PetriNetUnfolderBase]: For 43216/43216 co-relation queries the response was YES. [2024-06-04 15:35:28,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 605 events. 284/605 cut-off events. For 43216/43216 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3028 event pairs, 62 based on Foata normal form. 6/610 useless extension candidates. Maximal degree in co-relation 2616. Up to 477 conditions per place. [2024-06-04 15:35:28,971 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 22 changer transitions 19/131 dead transitions. [2024-06-04 15:35:28,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 131 transitions, 1102 flow [2024-06-04 15:35:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-04 15:35:28,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-04 15:35:28,972 INFO L175 Difference]: Start difference. First operand has 202 places, 112 transitions, 796 flow. Second operand 12 states and 130 transitions. [2024-06-04 15:35:28,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 131 transitions, 1102 flow [2024-06-04 15:35:29,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 131 transitions, 993 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-04 15:35:29,030 INFO L231 Difference]: Finished difference. Result has 186 places, 105 transitions, 695 flow [2024-06-04 15:35:29,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=695, PETRI_PLACES=186, PETRI_TRANSITIONS=105} [2024-06-04 15:35:29,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-04 15:35:29,030 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 105 transitions, 695 flow [2024-06-04 15:35:29,030 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 15:35:29,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:29,030 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 15:35:29,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-04 15:35:29,030 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 15:35:29,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash -893327225, now seen corresponding path program 5 times [2024-06-04 15:35:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:29,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572052929] [2024-06-04 15:35:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:31,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:31,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572052929] [2024-06-04 15:35:31,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572052929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:31,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:31,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433438441] [2024-06-04 15:35:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:31,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:31,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:31,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:31,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 105 transitions, 695 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 15:35:31,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:31,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:31,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:31,870 INFO L124 PetriNetUnfolderBase]: 260/557 cut-off events. [2024-06-04 15:35:31,870 INFO L125 PetriNetUnfolderBase]: For 37059/37059 co-relation queries the response was YES. [2024-06-04 15:35:31,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 557 events. 260/557 cut-off events. For 37059/37059 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2712 event pairs, 61 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2338. Up to 418 conditions per place. [2024-06-04 15:35:31,873 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 82 selfloop transitions, 22 changer transitions 18/124 dead transitions. [2024-06-04 15:35:31,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 124 transitions, 987 flow [2024-06-04 15:35:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-04 15:35:31,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-04 15:35:31,874 INFO L175 Difference]: Start difference. First operand has 186 places, 105 transitions, 695 flow. Second operand 12 states and 132 transitions. [2024-06-04 15:35:31,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 124 transitions, 987 flow [2024-06-04 15:35:31,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 124 transitions, 933 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-04 15:35:31,922 INFO L231 Difference]: Finished difference. Result has 179 places, 98 transitions, 654 flow [2024-06-04 15:35:31,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=654, PETRI_PLACES=179, PETRI_TRANSITIONS=98} [2024-06-04 15:35:31,923 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-04 15:35:31,923 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 98 transitions, 654 flow [2024-06-04 15:35:31,923 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 15:35:31,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:31,923 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 15:35:31,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-04 15:35:31,923 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 15:35:31,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:31,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1214207931, now seen corresponding path program 6 times [2024-06-04 15:35:31,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:31,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542224841] [2024-06-04 15:35:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:31,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:34,376 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 15:35:34,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:34,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542224841] [2024-06-04 15:35:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542224841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:34,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:34,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298184747] [2024-06-04 15:35:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:34,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:34,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:34,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:34,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 98 transitions, 654 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 15:35:34,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:34,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:34,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:35,009 INFO L124 PetriNetUnfolderBase]: 244/525 cut-off events. [2024-06-04 15:35:35,009 INFO L125 PetriNetUnfolderBase]: For 34813/34813 co-relation queries the response was YES. [2024-06-04 15:35:35,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 525 events. 244/525 cut-off events. For 34813/34813 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2506 event pairs, 58 based on Foata normal form. 6/530 useless extension candidates. Maximal degree in co-relation 2220. Up to 407 conditions per place. [2024-06-04 15:35:35,014 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 12 changer transitions 30/116 dead transitions. [2024-06-04 15:35:35,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 116 transitions, 926 flow [2024-06-04 15:35:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-04 15:35:35,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-04 15:35:35,015 INFO L175 Difference]: Start difference. First operand has 179 places, 98 transitions, 654 flow. Second operand 12 states and 127 transitions. [2024-06-04 15:35:35,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 116 transitions, 926 flow [2024-06-04 15:35:35,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 116 transitions, 870 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:35:35,069 INFO L231 Difference]: Finished difference. Result has 169 places, 83 transitions, 542 flow [2024-06-04 15:35:35,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=542, PETRI_PLACES=169, PETRI_TRANSITIONS=83} [2024-06-04 15:35:35,070 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-04 15:35:35,070 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 83 transitions, 542 flow [2024-06-04 15:35:35,070 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 15:35:35,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:35,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:35:35,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-04 15:35:35,070 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 15:35:35,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash 374697735, now seen corresponding path program 7 times [2024-06-04 15:35:35,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:35,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336225944] [2024-06-04 15:35:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:37,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336225944] [2024-06-04 15:35:37,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336225944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:37,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:37,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138233405] [2024-06-04 15:35:37,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:37,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:37,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:37,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:37,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:37,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 83 transitions, 542 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 15:35:37,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:37,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:37,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:38,239 INFO L124 PetriNetUnfolderBase]: 234/496 cut-off events. [2024-06-04 15:35:38,239 INFO L125 PetriNetUnfolderBase]: For 39046/39046 co-relation queries the response was YES. [2024-06-04 15:35:38,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 496 events. 234/496 cut-off events. For 39046/39046 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2323 event pairs, 67 based on Foata normal form. 6/502 useless extension candidates. Maximal degree in co-relation 2368. Up to 298 conditions per place. [2024-06-04 15:35:38,242 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 23 changer transitions 10/103 dead transitions. [2024-06-04 15:35:38,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 103 transitions, 908 flow [2024-06-04 15:35:38,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:38,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-04 15:35:38,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-04 15:35:38,242 INFO L175 Difference]: Start difference. First operand has 169 places, 83 transitions, 542 flow. Second operand 12 states and 129 transitions. [2024-06-04 15:35:38,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 103 transitions, 908 flow [2024-06-04 15:35:38,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 103 transitions, 822 flow, removed 16 selfloop flow, removed 18 redundant places. [2024-06-04 15:35:38,290 INFO L231 Difference]: Finished difference. Result has 144 places, 79 transitions, 501 flow [2024-06-04 15:35:38,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=501, PETRI_PLACES=144, PETRI_TRANSITIONS=79} [2024-06-04 15:35:38,291 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-04 15:35:38,291 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 79 transitions, 501 flow [2024-06-04 15:35:38,291 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 15:35:38,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:38,291 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 15:35:38,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-04 15:35:38,291 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 15:35:38,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:38,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1038733881, now seen corresponding path program 8 times [2024-06-04 15:35:38,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:38,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607233846] [2024-06-04 15:35:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:38,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:41,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:41,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607233846] [2024-06-04 15:35:41,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607233846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:41,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410363274] [2024-06-04 15:35:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:41,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:41,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:41,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:41,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 79 transitions, 501 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 15:35:41,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:41,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:41,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:41,604 INFO L124 PetriNetUnfolderBase]: 207/439 cut-off events. [2024-06-04 15:35:41,604 INFO L125 PetriNetUnfolderBase]: For 22532/22532 co-relation queries the response was YES. [2024-06-04 15:35:41,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 439 events. 207/439 cut-off events. For 22532/22532 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1977 event pairs, 54 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 1816. Up to 289 conditions per place. [2024-06-04 15:35:41,606 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 55 selfloop transitions, 21 changer transitions 16/94 dead transitions. [2024-06-04 15:35:41,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 94 transitions, 721 flow [2024-06-04 15:35:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-04 15:35:41,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-04 15:35:41,607 INFO L175 Difference]: Start difference. First operand has 144 places, 79 transitions, 501 flow. Second operand 12 states and 123 transitions. [2024-06-04 15:35:41,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 94 transitions, 721 flow [2024-06-04 15:35:41,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 94 transitions, 668 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:35:41,636 INFO L231 Difference]: Finished difference. Result has 139 places, 73 transitions, 462 flow [2024-06-04 15:35:41,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=462, PETRI_PLACES=139, PETRI_TRANSITIONS=73} [2024-06-04 15:35:41,636 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-04 15:35:41,636 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 73 transitions, 462 flow [2024-06-04 15:35:41,636 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 15:35:41,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:41,637 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 15:35:41,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-04 15:35:41,637 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 15:35:41,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2097315545, now seen corresponding path program 9 times [2024-06-04 15:35:41,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:41,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492481347] [2024-06-04 15:35:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:41,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:43,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:43,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492481347] [2024-06-04 15:35:43,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492481347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:43,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:43,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:43,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867780388] [2024-06-04 15:35:43,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:43,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:43,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:43,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:43,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 73 transitions, 462 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 15:35:43,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:43,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:43,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:43,587 INFO L124 PetriNetUnfolderBase]: 196/414 cut-off events. [2024-06-04 15:35:43,587 INFO L125 PetriNetUnfolderBase]: For 19930/19930 co-relation queries the response was YES. [2024-06-04 15:35:43,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 414 events. 196/414 cut-off events. For 19930/19930 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1823 event pairs, 52 based on Foata normal form. 6/420 useless extension candidates. Maximal degree in co-relation 1702. Up to 332 conditions per place. [2024-06-04 15:35:43,590 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 61 selfloop transitions, 13 changer transitions 12/88 dead transitions. [2024-06-04 15:35:43,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 88 transitions, 672 flow [2024-06-04 15:35:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:35:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:35:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-04 15:35:43,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-04 15:35:43,601 INFO L175 Difference]: Start difference. First operand has 139 places, 73 transitions, 462 flow. Second operand 11 states and 116 transitions. [2024-06-04 15:35:43,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 88 transitions, 672 flow [2024-06-04 15:35:43,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 88 transitions, 618 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-04 15:35:43,618 INFO L231 Difference]: Finished difference. Result has 127 places, 69 transitions, 415 flow [2024-06-04 15:35:43,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=415, PETRI_PLACES=127, PETRI_TRANSITIONS=69} [2024-06-04 15:35:43,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-04 15:35:43,619 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 69 transitions, 415 flow [2024-06-04 15:35:43,619 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 15:35:43,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:43,619 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 15:35:43,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-04 15:35:43,619 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 15:35:43,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1362705413, now seen corresponding path program 10 times [2024-06-04 15:35:43,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:43,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597455436] [2024-06-04 15:35:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597455436] [2024-06-04 15:35:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597455436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:45,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:45,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:45,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528527931] [2024-06-04 15:35:45,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:45,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:45,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:46,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:46,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 69 transitions, 415 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 15:35:46,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:46,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:46,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:46,415 INFO L124 PetriNetUnfolderBase]: 182/388 cut-off events. [2024-06-04 15:35:46,415 INFO L125 PetriNetUnfolderBase]: For 15878/15878 co-relation queries the response was YES. [2024-06-04 15:35:46,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 388 events. 182/388 cut-off events. For 15878/15878 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1668 event pairs, 50 based on Foata normal form. 6/394 useless extension candidates. Maximal degree in co-relation 1548. Up to 290 conditions per place. [2024-06-04 15:35:46,416 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 15 changer transitions 10/86 dead transitions. [2024-06-04 15:35:46,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 86 transitions, 625 flow [2024-06-04 15:35:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-04 15:35:46,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-04 15:35:46,417 INFO L175 Difference]: Start difference. First operand has 127 places, 69 transitions, 415 flow. Second operand 12 states and 126 transitions. [2024-06-04 15:35:46,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 86 transitions, 625 flow [2024-06-04 15:35:46,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 86 transitions, 591 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:46,430 INFO L231 Difference]: Finished difference. Result has 122 places, 65 transitions, 394 flow [2024-06-04 15:35:46,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=394, PETRI_PLACES=122, PETRI_TRANSITIONS=65} [2024-06-04 15:35:46,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-04 15:35:46,431 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 65 transitions, 394 flow [2024-06-04 15:35:46,431 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 15:35:46,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:46,431 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 15:35:46,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-04 15:35:46,431 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 15:35:46,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:46,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1256350317, now seen corresponding path program 11 times [2024-06-04 15:35:46,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:46,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130545782] [2024-06-04 15:35:46,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:46,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:47,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:47,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130545782] [2024-06-04 15:35:47,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130545782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:47,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:47,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:47,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920095832] [2024-06-04 15:35:47,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:47,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:48,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:48,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 65 transitions, 394 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 15:35:48,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:48,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:48,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:48,362 INFO L124 PetriNetUnfolderBase]: 170/364 cut-off events. [2024-06-04 15:35:48,362 INFO L125 PetriNetUnfolderBase]: For 14404/14404 co-relation queries the response was YES. [2024-06-04 15:35:48,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 364 events. 170/364 cut-off events. For 14404/14404 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1522 event pairs, 46 based on Foata normal form. 6/370 useless extension candidates. Maximal degree in co-relation 1462. Up to 289 conditions per place. [2024-06-04 15:35:48,364 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 9 changer transitions 17/81 dead transitions. [2024-06-04 15:35:48,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 81 transitions, 586 flow [2024-06-04 15:35:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-04 15:35:48,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-04 15:35:48,365 INFO L175 Difference]: Start difference. First operand has 122 places, 65 transitions, 394 flow. Second operand 12 states and 120 transitions. [2024-06-04 15:35:48,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 81 transitions, 586 flow [2024-06-04 15:35:48,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 81 transitions, 548 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-04 15:35:48,377 INFO L231 Difference]: Finished difference. Result has 116 places, 60 transitions, 354 flow [2024-06-04 15:35:48,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=354, PETRI_PLACES=116, PETRI_TRANSITIONS=60} [2024-06-04 15:35:48,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-04 15:35:48,378 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 60 transitions, 354 flow [2024-06-04 15:35:48,378 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 15:35:48,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:48,378 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 15:35:48,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-04 15:35:48,378 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 15:35:48,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:48,378 INFO L85 PathProgramCache]: Analyzing trace with hash -948768639, now seen corresponding path program 12 times [2024-06-04 15:35:48,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:48,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094389798] [2024-06-04 15:35:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:48,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:50,007 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 15:35:50,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:50,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094389798] [2024-06-04 15:35:50,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094389798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:50,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:50,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:50,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421883885] [2024-06-04 15:35:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:50,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:50,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:50,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:50,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:50,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 60 transitions, 354 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 15:35:50,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:50,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:50,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:50,561 INFO L124 PetriNetUnfolderBase]: 152/330 cut-off events. [2024-06-04 15:35:50,562 INFO L125 PetriNetUnfolderBase]: For 12298/12298 co-relation queries the response was YES. [2024-06-04 15:35:50,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 330 events. 152/330 cut-off events. For 12298/12298 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1330 event pairs, 42 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1322. Up to 252 conditions per place. [2024-06-04 15:35:50,563 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 6 changer transitions 22/76 dead transitions. [2024-06-04 15:35:50,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 76 transitions, 538 flow [2024-06-04 15:35:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-04 15:35:50,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-04 15:35:50,564 INFO L175 Difference]: Start difference. First operand has 116 places, 60 transitions, 354 flow. Second operand 12 states and 119 transitions. [2024-06-04 15:35:50,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 76 transitions, 538 flow [2024-06-04 15:35:50,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 76 transitions, 510 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:50,572 INFO L231 Difference]: Finished difference. Result has 108 places, 51 transitions, 287 flow [2024-06-04 15:35:50,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=287, PETRI_PLACES=108, PETRI_TRANSITIONS=51} [2024-06-04 15:35:50,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-04 15:35:50,573 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 51 transitions, 287 flow [2024-06-04 15:35:50,573 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 15:35:50,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:50,573 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 15:35:50,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-04 15:35:50,573 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 15:35:50,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:50,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2106252845, now seen corresponding path program 13 times [2024-06-04 15:35:50,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:50,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264954553] [2024-06-04 15:35:50,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:50,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:52,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:35:52,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:52,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264954553] [2024-06-04 15:35:52,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264954553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:52,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:52,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:52,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359381669] [2024-06-04 15:35:52,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:52,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:52,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:52,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:52,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:52,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:52,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 51 transitions, 287 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 15:35:52,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:52,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:52,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:52,834 INFO L124 PetriNetUnfolderBase]: 131/287 cut-off events. [2024-06-04 15:35:52,834 INFO L125 PetriNetUnfolderBase]: For 9758/9758 co-relation queries the response was YES. [2024-06-04 15:35:52,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 287 events. 131/287 cut-off events. For 9758/9758 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1099 event pairs, 36 based on Foata normal form. 6/293 useless extension candidates. Maximal degree in co-relation 1152. Up to 205 conditions per place. [2024-06-04 15:35:52,836 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 39 selfloop transitions, 10 changer transitions 17/68 dead transitions. [2024-06-04 15:35:52,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 68 transitions, 459 flow [2024-06-04 15:35:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:35:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:35:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-04 15:35:52,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-04 15:35:52,836 INFO L175 Difference]: Start difference. First operand has 108 places, 51 transitions, 287 flow. Second operand 12 states and 121 transitions. [2024-06-04 15:35:52,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 68 transitions, 459 flow [2024-06-04 15:35:52,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 68 transitions, 431 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:52,844 INFO L231 Difference]: Finished difference. Result has 96 places, 46 transitions, 264 flow [2024-06-04 15:35:52,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=96, PETRI_TRANSITIONS=46} [2024-06-04 15:35:52,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-04 15:35:52,844 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 46 transitions, 264 flow [2024-06-04 15:35:52,844 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 15:35:52,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:52,845 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 15:35:52,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-04 15:35:52,845 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 15:35:52,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1913254539, now seen corresponding path program 14 times [2024-06-04 15:35:52,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:52,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657414646] [2024-06-04 15:35:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:55,388 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 15:35:55,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:55,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657414646] [2024-06-04 15:35:55,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657414646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:55,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:55,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:35:55,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742990662] [2024-06-04 15:35:55,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:55,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:35:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:35:55,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:35:55,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:55,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 46 transitions, 264 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 15:35:55,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:55,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:55,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:56,125 INFO L124 PetriNetUnfolderBase]: 115/255 cut-off events. [2024-06-04 15:35:56,125 INFO L125 PetriNetUnfolderBase]: For 7579/7579 co-relation queries the response was YES. [2024-06-04 15:35:56,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 255 events. 115/255 cut-off events. For 7579/7579 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 922 event pairs, 40 based on Foata normal form. 6/261 useless extension candidates. Maximal degree in co-relation 1018. Up to 167 conditions per place. [2024-06-04 15:35:56,126 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 36 selfloop transitions, 14 changer transitions 9/61 dead transitions. [2024-06-04 15:35:56,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 414 flow [2024-06-04 15:35:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:35:56,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:35:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-04 15:35:56,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-04 15:35:56,127 INFO L175 Difference]: Start difference. First operand has 96 places, 46 transitions, 264 flow. Second operand 11 states and 115 transitions. [2024-06-04 15:35:56,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 414 flow [2024-06-04 15:35:56,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 61 transitions, 386 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:35:56,133 INFO L231 Difference]: Finished difference. Result has 88 places, 43 transitions, 252 flow [2024-06-04 15:35:56,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=252, PETRI_PLACES=88, PETRI_TRANSITIONS=43} [2024-06-04 15:35:56,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-04 15:35:56,133 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 43 transitions, 252 flow [2024-06-04 15:35:56,133 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 15:35:56,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:56,133 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 15:35:56,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-04 15:35:56,133 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 15:35:56,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash 443926327, now seen corresponding path program 15 times [2024-06-04 15:35:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47228114] [2024-06-04 15:35:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:35:57,680 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 15:35:57,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:35:57,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47228114] [2024-06-04 15:35:57,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47228114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:35:57,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:35:57,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:35:57,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880256355] [2024-06-04 15:35:57,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:35:57,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:35:57,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:35:57,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:35:57,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:35:57,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:35:57,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 43 transitions, 252 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 15:35:57,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:35:57,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:35:57,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:35:58,126 INFO L124 PetriNetUnfolderBase]: 105/237 cut-off events. [2024-06-04 15:35:58,126 INFO L125 PetriNetUnfolderBase]: For 6076/6076 co-relation queries the response was YES. [2024-06-04 15:35:58,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 237 events. 105/237 cut-off events. For 6076/6076 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 839 event pairs, 32 based on Foata normal form. 6/243 useless extension candidates. Maximal degree in co-relation 940. Up to 167 conditions per place. [2024-06-04 15:35:58,127 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 34 selfloop transitions, 9 changer transitions 12/57 dead transitions. [2024-06-04 15:35:58,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 57 transitions, 392 flow [2024-06-04 15:35:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:35:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:35:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-04 15:35:58,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-04 15:35:58,128 INFO L175 Difference]: Start difference. First operand has 88 places, 43 transitions, 252 flow. Second operand 11 states and 111 transitions. [2024-06-04 15:35:58,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 57 transitions, 392 flow [2024-06-04 15:35:58,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 57 transitions, 358 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-04 15:35:58,133 INFO L231 Difference]: Finished difference. Result has 84 places, 39 transitions, 217 flow [2024-06-04 15:35:58,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=217, PETRI_PLACES=84, PETRI_TRANSITIONS=39} [2024-06-04 15:35:58,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-04 15:35:58,133 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 39 transitions, 217 flow [2024-06-04 15:35:58,133 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 15:35:58,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:35:58,134 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 15:35:58,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-04 15:35:58,134 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 15:35:58,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:35:58,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1564054133, now seen corresponding path program 16 times [2024-06-04 15:35:58,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:35:58,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621871028] [2024-06-04 15:35:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:35:58,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:35:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:00,123 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 15:36:00,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:00,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621871028] [2024-06-04 15:36:00,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621871028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:00,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:00,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:00,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967611946] [2024-06-04 15:36:00,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:00,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:00,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:00,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:00,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:00,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:36:00,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 39 transitions, 217 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 15:36:00,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:00,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:36:00,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:00,458 INFO L124 PetriNetUnfolderBase]: 91/211 cut-off events. [2024-06-04 15:36:00,459 INFO L125 PetriNetUnfolderBase]: For 5148/5148 co-relation queries the response was YES. [2024-06-04 15:36:00,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 211 events. 91/211 cut-off events. For 5148/5148 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 711 event pairs, 32 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 830. Up to 139 conditions per place. [2024-06-04 15:36:00,459 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 6 changer transitions 18/54 dead transitions. [2024-06-04 15:36:00,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 54 transitions, 353 flow [2024-06-04 15:36:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:00,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-04 15:36:00,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-04 15:36:00,460 INFO L175 Difference]: Start difference. First operand has 84 places, 39 transitions, 217 flow. Second operand 12 states and 118 transitions. [2024-06-04 15:36:00,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 54 transitions, 353 flow [2024-06-04 15:36:00,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 54 transitions, 321 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-04 15:36:00,464 INFO L231 Difference]: Finished difference. Result has 78 places, 32 transitions, 167 flow [2024-06-04 15:36:00,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=167, PETRI_PLACES=78, PETRI_TRANSITIONS=32} [2024-06-04 15:36:00,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-04 15:36:00,465 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 32 transitions, 167 flow [2024-06-04 15:36:00,465 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 15:36:00,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:00,465 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 15:36:00,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-04 15:36:00,465 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 15:36:00,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:00,465 INFO L85 PathProgramCache]: Analyzing trace with hash 452863627, now seen corresponding path program 17 times [2024-06-04 15:36:00,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:00,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655640348] [2024-06-04 15:36:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:00,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:01,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:01,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655640348] [2024-06-04 15:36:01,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655640348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:01,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:01,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-04 15:36:01,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111881288] [2024-06-04 15:36:01,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:01,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-04 15:36:01,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:01,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-04 15:36:01,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-04 15:36:02,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:36:02,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 32 transitions, 167 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 15:36:02,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:02,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:36:02,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:02,325 INFO L124 PetriNetUnfolderBase]: 79/183 cut-off events. [2024-06-04 15:36:02,325 INFO L125 PetriNetUnfolderBase]: For 4316/4316 co-relation queries the response was YES. [2024-06-04 15:36:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 183 events. 79/183 cut-off events. For 4316/4316 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 582 event pairs, 28 based on Foata normal form. 6/189 useless extension candidates. Maximal degree in co-relation 716. Up to 113 conditions per place. [2024-06-04 15:36:02,326 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 23 selfloop transitions, 6 changer transitions 15/46 dead transitions. [2024-06-04 15:36:02,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 46 transitions, 285 flow [2024-06-04 15:36:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 15:36:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 15:36:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-04 15:36:02,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-04 15:36:02,327 INFO L175 Difference]: Start difference. First operand has 78 places, 32 transitions, 167 flow. Second operand 11 states and 107 transitions. [2024-06-04 15:36:02,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 46 transitions, 285 flow [2024-06-04 15:36:02,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 46 transitions, 259 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-04 15:36:02,329 INFO L231 Difference]: Finished difference. Result has 65 places, 27 transitions, 135 flow [2024-06-04 15:36:02,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=135, PETRI_PLACES=65, PETRI_TRANSITIONS=27} [2024-06-04 15:36:02,329 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-04 15:36:02,329 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 27 transitions, 135 flow [2024-06-04 15:36:02,329 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 15:36:02,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:02,329 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 15:36:02,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-04 15:36:02,330 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 15:36:02,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1746811943, now seen corresponding path program 18 times [2024-06-04 15:36:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:02,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394116782] [2024-06-04 15:36:02,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:02,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:04,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:04,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394116782] [2024-06-04 15:36:04,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394116782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:04,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:04,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:36:04,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434056934] [2024-06-04 15:36:04,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:04,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:36:04,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:04,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:36:04,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:36:05,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:36:05,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 27 transitions, 135 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 15:36:05,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:05,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:36:05,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:05,257 INFO L124 PetriNetUnfolderBase]: 48/118 cut-off events. [2024-06-04 15:36:05,257 INFO L125 PetriNetUnfolderBase]: For 1518/1518 co-relation queries the response was YES. [2024-06-04 15:36:05,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 118 events. 48/118 cut-off events. For 1518/1518 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 288 event pairs, 4 based on Foata normal form. 6/124 useless extension candidates. Maximal degree in co-relation 394. Up to 38 conditions per place. [2024-06-04 15:36:05,258 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 20 selfloop transitions, 9 changer transitions 10/41 dead transitions. [2024-06-04 15:36:05,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 41 transitions, 243 flow [2024-06-04 15:36:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:05,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-04 15:36:05,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2864583333333333 [2024-06-04 15:36:05,258 INFO L175 Difference]: Start difference. First operand has 65 places, 27 transitions, 135 flow. Second operand 12 states and 110 transitions. [2024-06-04 15:36:05,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 41 transitions, 243 flow [2024-06-04 15:36:05,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 41 transitions, 223 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-04 15:36:05,259 INFO L231 Difference]: Finished difference. Result has 59 places, 23 transitions, 117 flow [2024-06-04 15:36:05,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=117, PETRI_PLACES=59, PETRI_TRANSITIONS=23} [2024-06-04 15:36:05,260 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-04 15:36:05,260 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 23 transitions, 117 flow [2024-06-04 15:36:05,260 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 15:36:05,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 15:36:05,260 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 15:36:05,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-04 15:36:05,260 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 15:36:05,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 15:36:05,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1301313385, now seen corresponding path program 19 times [2024-06-04 15:36:05,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 15:36:05,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031877893] [2024-06-04 15:36:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 15:36:05,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 15:36:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 15:36:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 15:36:07,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 15:36:07,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031877893] [2024-06-04 15:36:07,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031877893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 15:36:07,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 15:36:07,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-04 15:36:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300226118] [2024-06-04 15:36:07,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 15:36:07,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 15:36:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 15:36:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 15:36:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-04 15:36:07,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-04 15:36:07,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 23 transitions, 117 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 15:36:07,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 15:36:07,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-04 15:36:07,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 15:36:07,486 INFO L124 PetriNetUnfolderBase]: 21/61 cut-off events. [2024-06-04 15:36:07,486 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-06-04 15:36:07,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 61 events. 21/61 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 170. Up to 24 conditions per place. [2024-06-04 15:36:07,486 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-04 15:36:07,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 31 transitions, 165 flow [2024-06-04 15:36:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-04 15:36:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-04 15:36:07,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 102 transitions. [2024-06-04 15:36:07,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.265625 [2024-06-04 15:36:07,487 INFO L175 Difference]: Start difference. First operand has 59 places, 23 transitions, 117 flow. Second operand 12 states and 102 transitions. [2024-06-04 15:36:07,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 31 transitions, 165 flow [2024-06-04 15:36:07,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 127 flow, removed 1 selfloop flow, removed 19 redundant places. [2024-06-04 15:36:07,487 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-04 15:36:07,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-04 15:36:07,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-04 15:36:07,488 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-04 15:36:07,488 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 15:36:07,490 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 15:36:07,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 15:36:07,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 15:36:07,491 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 15:36:07,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-04 15:36:07,492 INFO L445 BasicCegarLoop]: Path program histogram: [42, 31, 19, 19, 18, 17, 15, 10, 7, 6, 6, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 15:36:07,494 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 15:36:07,494 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 15:36:07,497 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 15:36:07,497 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 15:36:07,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 03:36:07 BasicIcfg [2024-06-04 15:36:07,498 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 15:36:07,498 INFO L158 Benchmark]: Toolchain (without parser) took 494742.36ms. Allocated memory was 167.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 128.3MB in the beginning and 910.9MB in the end (delta: -782.6MB). Peak memory consumption was 455.5MB. Max. memory is 16.1GB. [2024-06-04 15:36:07,498 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:36:07,498 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 15:36:07,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.96ms. Allocated memory is still 167.8MB. Free memory was 128.3MB in the beginning and 92.6MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-04 15:36:07,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.75ms. Allocated memory is still 167.8MB. Free memory was 92.6MB in the beginning and 90.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 15:36:07,499 INFO L158 Benchmark]: Boogie Preprocessor took 103.57ms. Allocated memory is still 167.8MB. Free memory was 90.3MB in the beginning and 132.9MB in the end (delta: -42.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-04 15:36:07,499 INFO L158 Benchmark]: RCFGBuilder took 597.72ms. Allocated memory is still 167.8MB. Free memory was 132.9MB in the beginning and 74.2MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-04 15:36:07,499 INFO L158 Benchmark]: TraceAbstraction took 493436.11ms. Allocated memory was 167.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 73.2MB in the beginning and 910.9MB in the end (delta: -837.7MB). Peak memory consumption was 401.7MB. Max. memory is 16.1GB. [2024-06-04 15:36:07,500 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 74.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.96ms. Allocated memory is still 167.8MB. Free memory was 128.3MB in the beginning and 92.6MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.75ms. Allocated memory is still 167.8MB. Free memory was 92.6MB in the beginning and 90.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.57ms. Allocated memory is still 167.8MB. Free memory was 90.3MB in the beginning and 132.9MB in the end (delta: -42.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 597.72ms. Allocated memory is still 167.8MB. Free memory was 132.9MB in the beginning and 74.2MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 493436.11ms. Allocated memory was 167.8MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 73.2MB in the beginning and 910.9MB in the end (delta: -837.7MB). Peak memory consumption was 401.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 493.3s, OverallIterations: 222, TraceHistogramMax: 1, PathProgramHistogramMax: 42, EmptinessCheckTime: 0.0s, AutomataDifference: 191.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15041 SdHoareTripleChecker+Valid, 71.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13023 mSDsluCounter, 5099 SdHoareTripleChecker+Invalid, 62.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4488 mSDsCounter, 3766 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114428 IncrementalHoareTripleChecker+Invalid, 118194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3766 mSolverCounterUnsat, 611 mSDtfsCounter, 114428 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2718 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 2694 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6258 ImplicationChecksByTransitivity, 83.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3052occurred in iteration=103, InterpolantAutomatonStates: 2297, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 298.3s InterpolantComputationTime, 3916 NumberOfCodeBlocks, 3916 NumberOfCodeBlocksAsserted, 222 NumberOfCheckSat, 3694 ConstructedInterpolants, 0 QuantifiedInterpolants, 183689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 222 InterpolantComputations, 222 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 15:36:07,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE