./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 [2024-06-03 20:00:48,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:00:48,308 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:00:48,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:00:48,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:00:48,338 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:00:48,339 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:00:48,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:00:48,339 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:00:48,342 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:00:48,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:00:48,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:00:48,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:00:48,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:00:48,345 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:00:48,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:00:48,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:00:48,346 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:00:48,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:00:48,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:00:48,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:00:48,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:00:48,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:00:48,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:00:48,348 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:00:48,348 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:00:48,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:00:48,348 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:00:48,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:00:48,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:00:48,350 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:00:48,350 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:00:48,350 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:00:48,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:00:48,350 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:00:48,351 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:00:48,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:00:48,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:00:48,351 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:00:48,351 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:00:48,351 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:00:48,352 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:00:48,352 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:00:48,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:00:48,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:00:48,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:00:48,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:00:48,607 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:00:48,607 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:00:48,608 INFO L431 ainManager$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 [2024-06-03 20:00:48,761 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:00:48,761 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:00:48,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-03 20:00:49,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:00:49,874 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:00:49,879 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi008.oepc.i [2024-06-03 20:00:49,893 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289154be5/a0fed1b4b00548f6a074ba8efbe6ed7b/FLAG755d321db [2024-06-03 20:00:49,902 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/289154be5/a0fed1b4b00548f6a074ba8efbe6ed7b [2024-06-03 20:00:49,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:00:49,905 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:00:49,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:00:49,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:00:49,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:00:49,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:00:48" (1/2) ... [2024-06-03 20:00:49,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee12b8a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:49, skipping insertion in model container [2024-06-03 20:00:49,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:00:48" (1/2) ... [2024-06-03 20:00:49,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55509383 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:00:49, skipping insertion in model container [2024-06-03 20:00:49,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:00:49" (2/2) ... [2024-06-03 20:00:49,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee12b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:49, skipping insertion in model container [2024-06-03 20:00:49,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:00:49" (2/2) ... [2024-06-03 20:00:49,913 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:00:49,991 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:00:49,992 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$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-03 20:00:49,992 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || x$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))) [2024-06-03 20:00:49,992 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:00:49,992 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-03 20:00:50,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:00:50,341 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:00:50,348 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 20:00:50,448 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:00:50,474 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:00:50,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50 WrapperNode [2024-06-03 20:00:50,474 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:00:50,475 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:00:50,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:00:50,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:00:50,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,518 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-03 20:00:50,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:00:50,519 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:00:50,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:00:50,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:00:50,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,546 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]. [2024-06-03 20:00:50,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,554 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:00:50,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:00:50,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:00:50,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:00:50,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (1/1) ... [2024-06-03 20:00:50,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:00:50,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:00:50,592 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) [2024-06-03 20:00:50,616 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 [2024-06-03 20:00:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 20:00:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:00:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 20:00:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 20:00:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 20:00:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 20:00:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:00:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 20:00:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:00:50,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:00:50,623 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 20:00:50,751 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:00:50,752 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:00:51,073 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:00:51,074 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:00:51,218 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:00:51,218 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 20:00:51,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:00:51 BoogieIcfgContainer [2024-06-03 20:00:51,220 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:00:51,222 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:00:51,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:00:51,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:00:51,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:00:48" (1/4) ... [2024-06-03 20:00:51,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd45dcc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:00:51, skipping insertion in model container [2024-06-03 20:00:51,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:00:49" (2/4) ... [2024-06-03 20:00:51,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd45dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:00:51, skipping insertion in model container [2024-06-03 20:00:51,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:00:50" (3/4) ... [2024-06-03 20:00:51,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd45dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:00:51, skipping insertion in model container [2024-06-03 20:00:51,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:00:51" (4/4) ... [2024-06-03 20:00:51,230 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi008.oepc.i [2024-06-03 20:00:51,243 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:00:51,244 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 20:00:51,244 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:00:51,303 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 20:00:51,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 20:00:51,354 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-03 20:00:51,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:00:51,356 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. [2024-06-03 20:00:51,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-03 20:00:51,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-03 20:00:51,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:00:51,375 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;@40fa8e78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:00:51,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 20:00:51,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:00:51,379 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 20:00:51,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:00:51,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:51,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:00:51,380 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)] === [2024-06-03 20:00:51,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1460724257, now seen corresponding path program 1 times [2024-06-03 20:00:51,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:51,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029215862] [2024-06-03 20:00:51,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:51,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:52,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:52,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029215862] [2024-06-03 20:00:52,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029215862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:52,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:52,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:00:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339650159] [2024-06-03 20:00:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:52,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:00:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:52,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:00:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:00:52,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-03 20:00:52,347 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) [2024-06-03 20:00:52,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:52,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-03 20:00:52,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:52,486 INFO L124 PetriNetUnfolderBase]: 162/310 cut-off events. [2024-06-03 20:00:52,487 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-03 20:00:52,490 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. [2024-06-03 20:00:52,492 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-03 20:00:52,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-03 20:00:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:00:52,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:00:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-03 20:00:52,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-03 20:00:52,502 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 55 transitions. [2024-06-03 20:00:52,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-03 20:00:52,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:00:52,505 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-03 20:00:52,507 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} [2024-06-03 20:00:52,509 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-03 20:00:52,509 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-03 20:00:52,509 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) [2024-06-03 20:00:52,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:52,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:52,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:00:52,510 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)] === [2024-06-03 20:00:52,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:52,510 INFO L85 PathProgramCache]: Analyzing trace with hash 698380346, now seen corresponding path program 1 times [2024-06-03 20:00:52,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:52,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890044384] [2024-06-03 20:00:52,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:52,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:53,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:53,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890044384] [2024-06-03 20:00:53,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890044384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:53,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:53,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:00:53,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994513862] [2024-06-03 20:00:53,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:53,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:00:53,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:53,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:00:53,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:00:53,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-03 20:00:53,179 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) [2024-06-03 20:00:53,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:53,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-03 20:00:53,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:53,294 INFO L124 PetriNetUnfolderBase]: 159/307 cut-off events. [2024-06-03 20:00:53,294 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-03 20:00:53,297 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. [2024-06-03 20:00:53,300 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-03 20:00:53,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 163 flow [2024-06-03 20:00:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:00:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:00:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-03 20:00:53,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-03 20:00:53,304 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 70 transitions. [2024-06-03 20:00:53,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 163 flow [2024-06-03 20:00:53,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:00:53,308 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-03 20:00:53,308 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} [2024-06-03 20:00:53,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-03 20:00:53,309 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-03 20:00:53,309 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) [2024-06-03 20:00:53,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:53,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:53,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:00:53,309 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)] === [2024-06-03 20:00:53,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:53,310 INFO L85 PathProgramCache]: Analyzing trace with hash 173167718, now seen corresponding path program 1 times [2024-06-03 20:00:53,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:53,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536981471] [2024-06-03 20:00:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:53,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:54,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:54,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536981471] [2024-06-03 20:00:54,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536981471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:54,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:54,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:00:54,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297927928] [2024-06-03 20:00:54,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:54,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:00:54,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:54,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:00:54,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:00:54,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-03 20:00:54,323 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) [2024-06-03 20:00:54,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:54,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-03 20:00:54,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:54,455 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2024-06-03 20:00:54,455 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-03 20:00:54,455 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. [2024-06-03 20:00:54,457 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 32 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-03 20:00:54,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 215 flow [2024-06-03 20:00:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:00:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:00:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-03 20:00:54,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-03 20:00:54,461 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 86 transitions. [2024-06-03 20:00:54,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 215 flow [2024-06-03 20:00:54,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 20:00:54,464 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-03 20:00:54,465 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} [2024-06-03 20:00:54,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-03 20:00:54,466 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-03 20:00:54,466 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) [2024-06-03 20:00:54,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:54,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:54,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:00:54,466 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)] === [2024-06-03 20:00:54,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1532684601, now seen corresponding path program 1 times [2024-06-03 20:00:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:54,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381232238] [2024-06-03 20:00:54,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:54,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:54,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:54,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381232238] [2024-06-03 20:00:54,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381232238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:54,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:54,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:00:54,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91658252] [2024-06-03 20:00:54,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:54,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:00:54,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:54,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:00:54,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:00:54,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:00:54,963 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) [2024-06-03 20:00:54,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:54,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:00:54,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:55,168 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-03 20:00:55,168 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-06-03 20:00:55,169 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. [2024-06-03 20:00:55,170 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-03 20:00:55,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 209 flow [2024-06-03 20:00:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:00:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:00:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-06-03 20:00:55,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 20:00:55,171 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 62 transitions. [2024-06-03 20:00:55,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 209 flow [2024-06-03 20:00:55,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:55,173 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-03 20:00:55,173 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} [2024-06-03 20:00:55,174 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-03 20:00:55,174 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-03 20:00:55,174 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) [2024-06-03 20:00:55,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:55,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:55,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 20:00:55,175 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)] === [2024-06-03 20:00:55,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:55,175 INFO L85 PathProgramCache]: Analyzing trace with hash 584721724, now seen corresponding path program 1 times [2024-06-03 20:00:55,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:55,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233230911] [2024-06-03 20:00:55,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:56,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:56,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233230911] [2024-06-03 20:00:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233230911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:56,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:56,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:00:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676888718] [2024-06-03 20:00:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:56,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:00:56,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:00:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:00:56,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-03 20:00:56,648 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) [2024-06-03 20:00:56,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:56,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-03 20:00:56,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:56,863 INFO L124 PetriNetUnfolderBase]: 190/355 cut-off events. [2024-06-03 20:00:56,864 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-06-03 20:00:56,865 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. [2024-06-03 20:00:56,866 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-03 20:00:56,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 297 flow [2024-06-03 20:00:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:00:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:00:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-03 20:00:56,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-03 20:00:56,868 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 8 states and 118 transitions. [2024-06-03 20:00:56,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 297 flow [2024-06-03 20:00:56,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 286 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 20:00:56,870 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 164 flow [2024-06-03 20:00:56,870 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} [2024-06-03 20:00:56,870 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-03 20:00:56,871 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 164 flow [2024-06-03 20:00:56,871 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) [2024-06-03 20:00:56,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:56,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:56,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 20:00:56,871 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)] === [2024-06-03 20:00:56,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:56,872 INFO L85 PathProgramCache]: Analyzing trace with hash -268581436, now seen corresponding path program 1 times [2024-06-03 20:00:56,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:56,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187780948] [2024-06-03 20:00:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:56,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:57,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:57,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187780948] [2024-06-03 20:00:57,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187780948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:57,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:57,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:00:57,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506975354] [2024-06-03 20:00:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:57,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:00:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:00:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:00:57,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:00:57,400 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) [2024-06-03 20:00:57,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:57,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:00:57,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:57,649 INFO L124 PetriNetUnfolderBase]: 201/363 cut-off events. [2024-06-03 20:00:57,649 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2024-06-03 20:00:57,650 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. [2024-06-03 20:00:57,651 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-03 20:00:57,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 276 flow [2024-06-03 20:00:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:00:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:00:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-03 20:00:57,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:00:57,652 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 164 flow. Second operand 6 states and 72 transitions. [2024-06-03 20:00:57,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 276 flow [2024-06-03 20:00:57,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 252 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 20:00:57,654 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 173 flow [2024-06-03 20:00:57,654 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} [2024-06-03 20:00:57,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-03 20:00:57,655 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 173 flow [2024-06-03 20:00:57,655 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) [2024-06-03 20:00:57,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:57,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 20:00:57,656 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)] === [2024-06-03 20:00:57,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash 636740918, now seen corresponding path program 1 times [2024-06-03 20:00:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348621160] [2024-06-03 20:00:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:58,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:58,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348621160] [2024-06-03 20:00:58,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348621160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:58,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:58,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:00:58,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078930789] [2024-06-03 20:00:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:58,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:00:58,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:58,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:00:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:00:58,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:00:58,262 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) [2024-06-03 20:00:58,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:58,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:00:58,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:58,421 INFO L124 PetriNetUnfolderBase]: 204/368 cut-off events. [2024-06-03 20:00:58,421 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2024-06-03 20:00:58,422 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. [2024-06-03 20:00:58,423 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 38 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-03 20:00:58,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 323 flow [2024-06-03 20:00:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:00:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:00:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-03 20:00:58,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 20:00:58,425 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 173 flow. Second operand 6 states and 76 transitions. [2024-06-03 20:00:58,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 323 flow [2024-06-03 20:00:58,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 306 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 20:00:58,427 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 203 flow [2024-06-03 20:00:58,427 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} [2024-06-03 20:00:58,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-03 20:00:58,428 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 203 flow [2024-06-03 20:00:58,428 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) [2024-06-03 20:00:58,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:58,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:58,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 20:00:58,428 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)] === [2024-06-03 20:00:58,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:58,429 INFO L85 PathProgramCache]: Analyzing trace with hash 293395208, now seen corresponding path program 2 times [2024-06-03 20:00:58,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:58,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902786325] [2024-06-03 20:00:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:58,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:00:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:00:58,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:00:58,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902786325] [2024-06-03 20:00:58,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902786325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:00:58,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:00:58,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:00:58,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002541906] [2024-06-03 20:00:58,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:00:58,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:00:58,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:00:58,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:00:58,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:00:59,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:00:59,034 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) [2024-06-03 20:00:59,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:00:59,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:00:59,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:00:59,231 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-03 20:00:59,232 INFO L125 PetriNetUnfolderBase]: For 1096/1096 co-relation queries the response was YES. [2024-06-03 20:00:59,232 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. [2024-06-03 20:00:59,234 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-03 20:00:59,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 307 flow [2024-06-03 20:00:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:00:59,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:00:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-03 20:00:59,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 20:00:59,236 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 203 flow. Second operand 6 states and 70 transitions. [2024-06-03 20:00:59,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 307 flow [2024-06-03 20:00:59,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 295 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-03 20:00:59,239 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 212 flow [2024-06-03 20:00:59,244 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} [2024-06-03 20:00:59,246 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-03 20:00:59,246 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 212 flow [2024-06-03 20:00:59,246 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) [2024-06-03 20:00:59,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:00:59,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:00:59,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 20:00:59,247 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)] === [2024-06-03 20:00:59,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:00:59,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1965014730, now seen corresponding path program 1 times [2024-06-03 20:00:59,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:00:59,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129604608] [2024-06-03 20:00:59,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:00:59,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:00:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:00,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:00,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129604608] [2024-06-03 20:01:00,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129604608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:00,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:00,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:01:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869598329] [2024-06-03 20:01:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:00,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:01:00,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:00,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:01:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:01:00,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:00,253 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) [2024-06-03 20:01:00,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:00,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:00,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:00,451 INFO L124 PetriNetUnfolderBase]: 205/370 cut-off events. [2024-06-03 20:01:00,451 INFO L125 PetriNetUnfolderBase]: For 1404/1404 co-relation queries the response was YES. [2024-06-03 20:01:00,452 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. [2024-06-03 20:01:00,454 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-03 20:01:00,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 396 flow [2024-06-03 20:01:00,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:01:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:01:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-03 20:01:00,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-03 20:01:00,455 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 212 flow. Second operand 7 states and 89 transitions. [2024-06-03 20:01:00,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 396 flow [2024-06-03 20:01:00,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 375 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-03 20:01:00,459 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 252 flow [2024-06-03 20:01:00,459 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} [2024-06-03 20:01:00,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-03 20:01:00,460 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 252 flow [2024-06-03 20:01:00,460 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) [2024-06-03 20:01:00,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:00,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:00,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 20:01:00,460 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)] === [2024-06-03 20:01:00,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash -416319645, now seen corresponding path program 1 times [2024-06-03 20:01:00,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:00,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047416574] [2024-06-03 20:01:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:00,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047416574] [2024-06-03 20:01:01,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047416574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:01,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:01,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:01:01,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019224225] [2024-06-03 20:01:01,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:01,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:01:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:01,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:01:01,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:01:01,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:01,174 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) [2024-06-03 20:01:01,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:01,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:01,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:01,354 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-03 20:01:01,354 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-03 20:01:01,355 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. [2024-06-03 20:01:01,356 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-03 20:01:01,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 458 flow [2024-06-03 20:01:01,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:01:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:01:01,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-03 20:01:01,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 20:01:01,358 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 252 flow. Second operand 7 states and 91 transitions. [2024-06-03 20:01:01,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 458 flow [2024-06-03 20:01:01,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 435 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-03 20:01:01,361 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 303 flow [2024-06-03 20:01:01,361 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} [2024-06-03 20:01:01,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-03 20:01:01,362 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 303 flow [2024-06-03 20:01:01,362 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) [2024-06-03 20:01:01,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:01,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:01,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 20:01:01,363 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)] === [2024-06-03 20:01:01,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:01,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1965164460, now seen corresponding path program 2 times [2024-06-03 20:01:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:01,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863669510] [2024-06-03 20:01:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:02,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:02,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863669510] [2024-06-03 20:01:02,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863669510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:02,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:02,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:01:02,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297857930] [2024-06-03 20:01:02,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:02,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:01:02,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:01:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:01:02,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:02,191 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) [2024-06-03 20:01:02,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:02,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:02,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:02,340 INFO L124 PetriNetUnfolderBase]: 227/406 cut-off events. [2024-06-03 20:01:02,340 INFO L125 PetriNetUnfolderBase]: For 2298/2298 co-relation queries the response was YES. [2024-06-03 20:01:02,341 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. [2024-06-03 20:01:02,342 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-03 20:01:02,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 461 flow [2024-06-03 20:01:02,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:01:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:01:02,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-03 20:01:02,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:01:02,345 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 303 flow. Second operand 7 states and 84 transitions. [2024-06-03 20:01:02,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 461 flow [2024-06-03 20:01:02,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 450 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-03 20:01:02,348 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 339 flow [2024-06-03 20:01:02,348 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} [2024-06-03 20:01:02,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-03 20:01:02,349 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 339 flow [2024-06-03 20:01:02,349 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) [2024-06-03 20:01:02,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:02,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:02,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 20:01:02,349 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)] === [2024-06-03 20:01:02,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash 505317795, now seen corresponding path program 2 times [2024-06-03 20:01:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:02,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824240142] [2024-06-03 20:01:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:02,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:02,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824240142] [2024-06-03 20:01:02,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824240142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:02,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:02,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:01:02,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476492245] [2024-06-03 20:01:02,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:02,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:01:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:01:02,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:01:03,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:03,007 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) [2024-06-03 20:01:03,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:03,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:03,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:03,225 INFO L124 PetriNetUnfolderBase]: 236/421 cut-off events. [2024-06-03 20:01:03,225 INFO L125 PetriNetUnfolderBase]: For 2895/2895 co-relation queries the response was YES. [2024-06-03 20:01:03,226 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. [2024-06-03 20:01:03,227 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 13 changer transitions 0/67 dead transitions. [2024-06-03 20:01:03,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 535 flow [2024-06-03 20:01:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:01:03,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:01:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-03 20:01:03,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-03 20:01:03,229 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 339 flow. Second operand 7 states and 86 transitions. [2024-06-03 20:01:03,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 535 flow [2024-06-03 20:01:03,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 508 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 20:01:03,234 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 357 flow [2024-06-03 20:01:03,234 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} [2024-06-03 20:01:03,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-03 20:01:03,235 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 357 flow [2024-06-03 20:01:03,235 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) [2024-06-03 20:01:03,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:03,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:03,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 20:01:03,236 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)] === [2024-06-03 20:01:03,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:03,237 INFO L85 PathProgramCache]: Analyzing trace with hash -408960555, now seen corresponding path program 3 times [2024-06-03 20:01:03,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:03,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450076468] [2024-06-03 20:01:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:03,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:03,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:03,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:03,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450076468] [2024-06-03 20:01:03,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450076468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:03,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:03,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:01:03,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694686876] [2024-06-03 20:01:03,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:03,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:01:03,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:03,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:01:03,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:01:03,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:03,844 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) [2024-06-03 20:01:03,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:03,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:03,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:04,042 INFO L124 PetriNetUnfolderBase]: 230/412 cut-off events. [2024-06-03 20:01:04,043 INFO L125 PetriNetUnfolderBase]: For 3186/3186 co-relation queries the response was YES. [2024-06-03 20:01:04,043 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. [2024-06-03 20:01:04,045 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-03 20:01:04,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 64 transitions, 503 flow [2024-06-03 20:01:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:01:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:01:04,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-03 20:01:04,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-03 20:01:04,046 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 357 flow. Second operand 7 states and 81 transitions. [2024-06-03 20:01:04,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 64 transitions, 503 flow [2024-06-03 20:01:04,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 465 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 20:01:04,050 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 344 flow [2024-06-03 20:01:04,050 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} [2024-06-03 20:01:04,050 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-03 20:01:04,050 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 344 flow [2024-06-03 20:01:04,051 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) [2024-06-03 20:01:04,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:04,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:04,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 20:01:04,051 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)] === [2024-06-03 20:01:04,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:04,051 INFO L85 PathProgramCache]: Analyzing trace with hash -843722950, now seen corresponding path program 3 times [2024-06-03 20:01:04,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:04,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974093433] [2024-06-03 20:01:04,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:04,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:04,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:04,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:04,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974093433] [2024-06-03 20:01:04,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974093433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:04,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:04,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:01:04,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880974687] [2024-06-03 20:01:04,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:04,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:01:04,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:04,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:01:04,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:01:04,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:04,784 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) [2024-06-03 20:01:04,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:04,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:04,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:04,963 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-03 20:01:04,963 INFO L125 PetriNetUnfolderBase]: For 3304/3304 co-relation queries the response was YES. [2024-06-03 20:01:04,964 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. [2024-06-03 20:01:04,966 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-03 20:01:04,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 62 transitions, 480 flow [2024-06-03 20:01:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:01:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:01:04,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 20:01:04,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-03 20:01:04,967 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 344 flow. Second operand 7 states and 79 transitions. [2024-06-03 20:01:04,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 62 transitions, 480 flow [2024-06-03 20:01:04,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 452 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:04,971 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 341 flow [2024-06-03 20:01:04,971 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} [2024-06-03 20:01:04,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-03 20:01:04,972 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 341 flow [2024-06-03 20:01:04,972 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) [2024-06-03 20:01:04,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:04,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:04,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 20:01:04,973 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)] === [2024-06-03 20:01:04,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:04,973 INFO L85 PathProgramCache]: Analyzing trace with hash -21190711, now seen corresponding path program 1 times [2024-06-03 20:01:04,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:04,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550960439] [2024-06-03 20:01:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:05,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550960439] [2024-06-03 20:01:05,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550960439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:05,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:05,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206086780] [2024-06-03 20:01:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:06,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:06,016 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) [2024-06-03 20:01:06,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:06,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:06,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:06,283 INFO L124 PetriNetUnfolderBase]: 234/419 cut-off events. [2024-06-03 20:01:06,284 INFO L125 PetriNetUnfolderBase]: For 3882/3882 co-relation queries the response was YES. [2024-06-03 20:01:06,285 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. [2024-06-03 20:01:06,286 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-03 20:01:06,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 545 flow [2024-06-03 20:01:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-03 20:01:06,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-03 20:01:06,288 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 341 flow. Second operand 8 states and 99 transitions. [2024-06-03 20:01:06,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 545 flow [2024-06-03 20:01:06,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 510 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:06,292 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 354 flow [2024-06-03 20:01:06,292 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} [2024-06-03 20:01:06,292 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-03 20:01:06,293 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 354 flow [2024-06-03 20:01:06,293 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) [2024-06-03 20:01:06,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:06,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:06,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 20:01:06,293 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)] === [2024-06-03 20:01:06,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:06,294 INFO L85 PathProgramCache]: Analyzing trace with hash 785915425, now seen corresponding path program 1 times [2024-06-03 20:01:06,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:06,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304264391] [2024-06-03 20:01:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:06,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:07,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304264391] [2024-06-03 20:01:07,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304264391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:07,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:07,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:07,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333960790] [2024-06-03 20:01:07,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:07,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:07,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:07,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:07,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:07,175 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) [2024-06-03 20:01:07,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:07,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:07,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:07,366 INFO L124 PetriNetUnfolderBase]: 247/440 cut-off events. [2024-06-03 20:01:07,366 INFO L125 PetriNetUnfolderBase]: For 4535/4535 co-relation queries the response was YES. [2024-06-03 20:01:07,367 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. [2024-06-03 20:01:07,369 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-03 20:01:07,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 606 flow [2024-06-03 20:01:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-03 20:01:07,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-03 20:01:07,371 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 354 flow. Second operand 8 states and 105 transitions. [2024-06-03 20:01:07,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 606 flow [2024-06-03 20:01:07,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 576 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:07,375 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 424 flow [2024-06-03 20:01:07,375 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} [2024-06-03 20:01:07,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-03 20:01:07,376 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 424 flow [2024-06-03 20:01:07,376 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) [2024-06-03 20:01:07,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:07,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:07,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 20:01:07,376 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)] === [2024-06-03 20:01:07,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:07,377 INFO L85 PathProgramCache]: Analyzing trace with hash 785915239, now seen corresponding path program 2 times [2024-06-03 20:01:07,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:07,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108235983] [2024-06-03 20:01:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:07,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:08,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:08,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108235983] [2024-06-03 20:01:08,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108235983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:08,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:08,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:08,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668876081] [2024-06-03 20:01:08,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:08,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:08,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:08,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:08,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:08,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:08,361 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) [2024-06-03 20:01:08,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:08,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:08,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:08,606 INFO L124 PetriNetUnfolderBase]: 253/450 cut-off events. [2024-06-03 20:01:08,607 INFO L125 PetriNetUnfolderBase]: For 5412/5412 co-relation queries the response was YES. [2024-06-03 20:01:08,608 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. [2024-06-03 20:01:08,609 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 24 changer transitions 0/84 dead transitions. [2024-06-03 20:01:08,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 700 flow [2024-06-03 20:01:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:08,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-03 20:01:08,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-03 20:01:08,611 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 424 flow. Second operand 8 states and 103 transitions. [2024-06-03 20:01:08,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 700 flow [2024-06-03 20:01:08,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 670 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 20:01:08,616 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 483 flow [2024-06-03 20:01:08,616 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} [2024-06-03 20:01:08,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-03 20:01:08,616 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 483 flow [2024-06-03 20:01:08,616 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) [2024-06-03 20:01:08,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:08,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:08,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 20:01:08,617 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)] === [2024-06-03 20:01:08,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash 790556869, now seen corresponding path program 3 times [2024-06-03 20:01:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:08,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638898951] [2024-06-03 20:01:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:08,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:09,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:09,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:09,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638898951] [2024-06-03 20:01:09,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638898951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:09,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:09,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:09,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607515445] [2024-06-03 20:01:09,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:09,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:09,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:09,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:09,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:09,635 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) [2024-06-03 20:01:09,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:09,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:09,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:09,805 INFO L124 PetriNetUnfolderBase]: 256/455 cut-off events. [2024-06-03 20:01:09,806 INFO L125 PetriNetUnfolderBase]: For 5980/5980 co-relation queries the response was YES. [2024-06-03 20:01:09,807 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. [2024-06-03 20:01:09,809 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-03 20:01:09,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 79 transitions, 679 flow [2024-06-03 20:01:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-03 20:01:09,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-03 20:01:09,810 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 483 flow. Second operand 8 states and 93 transitions. [2024-06-03 20:01:09,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 79 transitions, 679 flow [2024-06-03 20:01:09,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 79 transitions, 643 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-03 20:01:09,816 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 502 flow [2024-06-03 20:01:09,816 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} [2024-06-03 20:01:09,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-03 20:01:09,816 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 502 flow [2024-06-03 20:01:09,817 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) [2024-06-03 20:01:09,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:09,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:09,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 20:01:09,817 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)] === [2024-06-03 20:01:09,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 790557055, now seen corresponding path program 2 times [2024-06-03 20:01:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:09,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183897469] [2024-06-03 20:01:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:10,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:10,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183897469] [2024-06-03 20:01:10,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183897469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:10,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:10,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:10,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53927828] [2024-06-03 20:01:10,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:10,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:10,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:10,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:10,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:10,821 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) [2024-06-03 20:01:10,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:10,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:10,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:11,038 INFO L124 PetriNetUnfolderBase]: 274/484 cut-off events. [2024-06-03 20:01:11,038 INFO L125 PetriNetUnfolderBase]: For 7067/7067 co-relation queries the response was YES. [2024-06-03 20:01:11,039 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. [2024-06-03 20:01:11,041 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2024-06-03 20:01:11,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 795 flow [2024-06-03 20:01:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-03 20:01:11,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 20:01:11,043 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 502 flow. Second operand 8 states and 104 transitions. [2024-06-03 20:01:11,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 795 flow [2024-06-03 20:01:11,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 760 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:11,049 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 562 flow [2024-06-03 20:01:11,049 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} [2024-06-03 20:01:11,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-03 20:01:11,050 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 562 flow [2024-06-03 20:01:11,050 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) [2024-06-03 20:01:11,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:11,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:11,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 20:01:11,050 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)] === [2024-06-03 20:01:11,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:11,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2022695997, now seen corresponding path program 3 times [2024-06-03 20:01:11,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:11,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590511267] [2024-06-03 20:01:11,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:11,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:11,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590511267] [2024-06-03 20:01:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590511267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:11,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:11,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:11,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132500357] [2024-06-03 20:01:11,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:11,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:11,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:11,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:11,892 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) [2024-06-03 20:01:11,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:11,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:11,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:12,095 INFO L124 PetriNetUnfolderBase]: 268/475 cut-off events. [2024-06-03 20:01:12,095 INFO L125 PetriNetUnfolderBase]: For 7719/7719 co-relation queries the response was YES. [2024-06-03 20:01:12,100 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. [2024-06-03 20:01:12,102 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 20 changer transitions 0/89 dead transitions. [2024-06-03 20:01:12,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 784 flow [2024-06-03 20:01:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:12,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-03 20:01:12,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-03 20:01:12,105 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 562 flow. Second operand 8 states and 101 transitions. [2024-06-03 20:01:12,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 784 flow [2024-06-03 20:01:12,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 759 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 20:01:12,113 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 583 flow [2024-06-03 20:01:12,113 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} [2024-06-03 20:01:12,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-03 20:01:12,114 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 583 flow [2024-06-03 20:01:12,114 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) [2024-06-03 20:01:12,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:12,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:12,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 20:01:12,114 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)] === [2024-06-03 20:01:12,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1515016817, now seen corresponding path program 4 times [2024-06-03 20:01:12,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:12,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308575634] [2024-06-03 20:01:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:12,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308575634] [2024-06-03 20:01:12,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308575634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:12,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:12,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:12,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557360396] [2024-06-03 20:01:12,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:12,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:12,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:12,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:12,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:12,984 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) [2024-06-03 20:01:12,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:12,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:12,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:13,201 INFO L124 PetriNetUnfolderBase]: 277/490 cut-off events. [2024-06-03 20:01:13,201 INFO L125 PetriNetUnfolderBase]: For 8514/8514 co-relation queries the response was YES. [2024-06-03 20:01:13,202 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. [2024-06-03 20:01:13,204 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 71 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-06-03 20:01:13,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 89 transitions, 822 flow [2024-06-03 20:01:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-03 20:01:13,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:01:13,205 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 583 flow. Second operand 8 states and 96 transitions. [2024-06-03 20:01:13,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 89 transitions, 822 flow [2024-06-03 20:01:13,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 89 transitions, 777 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:13,213 INFO L231 Difference]: Finished difference. Result has 91 places, 76 transitions, 607 flow [2024-06-03 20:01:13,213 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} [2024-06-03 20:01:13,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-03 20:01:13,214 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 607 flow [2024-06-03 20:01:13,214 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) [2024-06-03 20:01:13,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:13,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:13,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 20:01:13,214 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)] === [2024-06-03 20:01:13,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash -385606735, now seen corresponding path program 5 times [2024-06-03 20:01:13,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:13,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368973670] [2024-06-03 20:01:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:13,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:13,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368973670] [2024-06-03 20:01:13,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368973670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:13,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:13,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:13,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823780416] [2024-06-03 20:01:13,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:13,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:14,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:14,024 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) [2024-06-03 20:01:14,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:14,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:14,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:14,259 INFO L124 PetriNetUnfolderBase]: 280/495 cut-off events. [2024-06-03 20:01:14,259 INFO L125 PetriNetUnfolderBase]: For 8892/8892 co-relation queries the response was YES. [2024-06-03 20:01:14,260 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. [2024-06-03 20:01:14,262 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 22 changer transitions 0/90 dead transitions. [2024-06-03 20:01:14,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 90 transitions, 877 flow [2024-06-03 20:01:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-03 20:01:14,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:01:14,263 INFO L175 Difference]: Start difference. First operand has 91 places, 76 transitions, 607 flow. Second operand 8 states and 96 transitions. [2024-06-03 20:01:14,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 90 transitions, 877 flow [2024-06-03 20:01:14,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 839 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:14,271 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 638 flow [2024-06-03 20:01:14,271 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} [2024-06-03 20:01:14,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-03 20:01:14,272 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 638 flow [2024-06-03 20:01:14,272 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) [2024-06-03 20:01:14,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:14,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:14,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 20:01:14,272 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)] === [2024-06-03 20:01:14,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1393121083, now seen corresponding path program 4 times [2024-06-03 20:01:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:14,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890814] [2024-06-03 20:01:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:15,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:15,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890814] [2024-06-03 20:01:15,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:15,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:15,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:15,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642968947] [2024-06-03 20:01:15,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:15,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:15,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:15,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:15,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:15,068 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) [2024-06-03 20:01:15,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:15,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:15,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:15,275 INFO L124 PetriNetUnfolderBase]: 281/497 cut-off events. [2024-06-03 20:01:15,275 INFO L125 PetriNetUnfolderBase]: For 9742/9742 co-relation queries the response was YES. [2024-06-03 20:01:15,276 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. [2024-06-03 20:01:15,277 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-06-03 20:01:15,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 856 flow [2024-06-03 20:01:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 20:01:15,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-03 20:01:15,278 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 638 flow. Second operand 8 states and 89 transitions. [2024-06-03 20:01:15,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 856 flow [2024-06-03 20:01:15,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 765 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:15,286 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 600 flow [2024-06-03 20:01:15,286 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} [2024-06-03 20:01:15,287 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-03 20:01:15,287 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 600 flow [2024-06-03 20:01:15,287 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) [2024-06-03 20:01:15,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:15,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:15,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 20:01:15,287 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)] === [2024-06-03 20:01:15,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:15,287 INFO L85 PathProgramCache]: Analyzing trace with hash 215177593, now seen corresponding path program 1 times [2024-06-03 20:01:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543116446] [2024-06-03 20:01:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:15,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:15,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:15,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543116446] [2024-06-03 20:01:15,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543116446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:15,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:15,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:01:15,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289028670] [2024-06-03 20:01:15,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:15,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:01:15,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:15,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:01:15,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:01:15,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:15,943 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) [2024-06-03 20:01:15,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:15,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:15,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:16,127 INFO L124 PetriNetUnfolderBase]: 282/499 cut-off events. [2024-06-03 20:01:16,127 INFO L125 PetriNetUnfolderBase]: For 10327/10327 co-relation queries the response was YES. [2024-06-03 20:01:16,128 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. [2024-06-03 20:01:16,130 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 14 changer transitions 0/94 dead transitions. [2024-06-03 20:01:16,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 837 flow [2024-06-03 20:01:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:16,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:16,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-03 20:01:16,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 20:01:16,133 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 600 flow. Second operand 8 states and 90 transitions. [2024-06-03 20:01:16,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 837 flow [2024-06-03 20:01:16,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 804 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:16,142 INFO L231 Difference]: Finished difference. Result has 97 places, 86 transitions, 651 flow [2024-06-03 20:01:16,142 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} [2024-06-03 20:01:16,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-03 20:01:16,143 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 86 transitions, 651 flow [2024-06-03 20:01:16,143 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) [2024-06-03 20:01:16,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:16,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:16,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 20:01:16,143 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)] === [2024-06-03 20:01:16,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:16,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1384840177, now seen corresponding path program 6 times [2024-06-03 20:01:16,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:16,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127123054] [2024-06-03 20:01:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:16,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:16,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:16,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:16,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127123054] [2024-06-03 20:01:16,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127123054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:16,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:16,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:01:16,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594325570] [2024-06-03 20:01:16,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:16,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:01:16,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:16,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:01:16,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:01:17,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:17,017 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) [2024-06-03 20:01:17,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:17,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:17,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:17,244 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-03 20:01:17,244 INFO L125 PetriNetUnfolderBase]: For 10484/10484 co-relation queries the response was YES. [2024-06-03 20:01:17,245 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. [2024-06-03 20:01:17,247 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-03 20:01:17,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 871 flow [2024-06-03 20:01:17,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:17,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-03 20:01:17,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 20:01:17,248 INFO L175 Difference]: Start difference. First operand has 97 places, 86 transitions, 651 flow. Second operand 8 states and 92 transitions. [2024-06-03 20:01:17,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 871 flow [2024-06-03 20:01:17,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 96 transitions, 841 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-03 20:01:17,257 INFO L231 Difference]: Finished difference. Result has 102 places, 86 transitions, 655 flow [2024-06-03 20:01:17,257 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} [2024-06-03 20:01:17,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-03 20:01:17,257 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 86 transitions, 655 flow [2024-06-03 20:01:17,257 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) [2024-06-03 20:01:17,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:17,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:17,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 20:01:17,258 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)] === [2024-06-03 20:01:17,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:17,258 INFO L85 PathProgramCache]: Analyzing trace with hash 215476805, now seen corresponding path program 1 times [2024-06-03 20:01:17,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:17,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611497550] [2024-06-03 20:01:17,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:17,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:18,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:18,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611497550] [2024-06-03 20:01:18,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611497550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:18,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:18,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:18,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667021858] [2024-06-03 20:01:18,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:18,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:18,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:18,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:18,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:18,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:18,294 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) [2024-06-03 20:01:18,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:18,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:18,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:18,574 INFO L124 PetriNetUnfolderBase]: 273/485 cut-off events. [2024-06-03 20:01:18,574 INFO L125 PetriNetUnfolderBase]: For 10480/10480 co-relation queries the response was YES. [2024-06-03 20:01:18,576 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. [2024-06-03 20:01:18,578 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 79 selfloop transitions, 13 changer transitions 0/94 dead transitions. [2024-06-03 20:01:18,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 94 transitions, 857 flow [2024-06-03 20:01:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:18,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:18,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 20:01:18,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:01:18,581 INFO L175 Difference]: Start difference. First operand has 102 places, 86 transitions, 655 flow. Second operand 8 states and 88 transitions. [2024-06-03 20:01:18,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 94 transitions, 857 flow [2024-06-03 20:01:18,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 94 transitions, 814 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:18,589 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 642 flow [2024-06-03 20:01:18,589 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} [2024-06-03 20:01:18,590 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-03 20:01:18,590 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 642 flow [2024-06-03 20:01:18,590 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) [2024-06-03 20:01:18,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:18,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:18,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 20:01:18,591 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)] === [2024-06-03 20:01:18,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1868749770, now seen corresponding path program 1 times [2024-06-03 20:01:18,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:18,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120867843] [2024-06-03 20:01:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:18,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:19,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:19,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120867843] [2024-06-03 20:01:19,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120867843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:19,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:19,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:19,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851357897] [2024-06-03 20:01:19,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:19,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:19,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:19,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:19,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:19,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:19,638 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) [2024-06-03 20:01:19,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:19,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:19,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:19,911 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-03 20:01:19,911 INFO L125 PetriNetUnfolderBase]: For 10896/10896 co-relation queries the response was YES. [2024-06-03 20:01:19,912 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. [2024-06-03 20:01:19,914 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2024-06-03 20:01:19,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 107 transitions, 925 flow [2024-06-03 20:01:19,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-03 20:01:19,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-03 20:01:19,916 INFO L175 Difference]: Start difference. First operand has 103 places, 86 transitions, 642 flow. Second operand 9 states and 106 transitions. [2024-06-03 20:01:19,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 107 transitions, 925 flow [2024-06-03 20:01:19,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 107 transitions, 892 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:19,941 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 678 flow [2024-06-03 20:01:19,941 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} [2024-06-03 20:01:19,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-03 20:01:19,942 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 678 flow [2024-06-03 20:01:19,942 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) [2024-06-03 20:01:19,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:19,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:19,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 20:01:19,942 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)] === [2024-06-03 20:01:19,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:19,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1406424631, now seen corresponding path program 1 times [2024-06-03 20:01:19,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:19,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263764806] [2024-06-03 20:01:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:19,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:20,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:20,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263764806] [2024-06-03 20:01:20,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263764806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:20,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:20,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:20,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772538856] [2024-06-03 20:01:20,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:20,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:20,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:20,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:20,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:21,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:21,022 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) [2024-06-03 20:01:21,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:21,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:21,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:21,282 INFO L124 PetriNetUnfolderBase]: 292/516 cut-off events. [2024-06-03 20:01:21,282 INFO L125 PetriNetUnfolderBase]: For 12749/12749 co-relation queries the response was YES. [2024-06-03 20:01:21,284 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. [2024-06-03 20:01:21,286 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 75 selfloop transitions, 36 changer transitions 0/113 dead transitions. [2024-06-03 20:01:21,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 1048 flow [2024-06-03 20:01:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 20:01:21,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-03 20:01:21,288 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 678 flow. Second operand 9 states and 115 transitions. [2024-06-03 20:01:21,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 1048 flow [2024-06-03 20:01:21,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 1013 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:21,309 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 756 flow [2024-06-03 20:01:21,309 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} [2024-06-03 20:01:21,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-03 20:01:21,309 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 756 flow [2024-06-03 20:01:21,310 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) [2024-06-03 20:01:21,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:21,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:21,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 20:01:21,310 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)] === [2024-06-03 20:01:21,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash -656761372, now seen corresponding path program 2 times [2024-06-03 20:01:21,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:21,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760052326] [2024-06-03 20:01:21,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:21,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760052326] [2024-06-03 20:01:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760052326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:22,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:22,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840122395] [2024-06-03 20:01:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:22,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:22,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:22,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:22,223 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) [2024-06-03 20:01:22,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:22,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:22,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:22,509 INFO L124 PetriNetUnfolderBase]: 328/574 cut-off events. [2024-06-03 20:01:22,509 INFO L125 PetriNetUnfolderBase]: For 16245/16245 co-relation queries the response was YES. [2024-06-03 20:01:22,510 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. [2024-06-03 20:01:22,512 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 46 changer transitions 0/124 dead transitions. [2024-06-03 20:01:22,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 1262 flow [2024-06-03 20:01:22,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:22,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-03 20:01:22,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-03 20:01:22,514 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 756 flow. Second operand 9 states and 122 transitions. [2024-06-03 20:01:22,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 1262 flow [2024-06-03 20:01:22,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 124 transitions, 1219 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-03 20:01:22,531 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 917 flow [2024-06-03 20:01:22,531 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} [2024-06-03 20:01:22,532 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-03 20:01:22,532 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 917 flow [2024-06-03 20:01:22,532 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) [2024-06-03 20:01:22,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:22,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:22,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 20:01:22,533 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)] === [2024-06-03 20:01:22,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:22,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1865030700, now seen corresponding path program 3 times [2024-06-03 20:01:22,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:22,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253748874] [2024-06-03 20:01:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:22,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:23,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:23,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253748874] [2024-06-03 20:01:23,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253748874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:23,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:23,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:23,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068411261] [2024-06-03 20:01:23,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:23,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:23,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:23,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:23,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:23,499 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) [2024-06-03 20:01:23,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:23,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:23,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:23,734 INFO L124 PetriNetUnfolderBase]: 329/576 cut-off events. [2024-06-03 20:01:23,734 INFO L125 PetriNetUnfolderBase]: For 17302/17302 co-relation queries the response was YES. [2024-06-03 20:01:23,735 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. [2024-06-03 20:01:23,737 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 46 changer transitions 0/125 dead transitions. [2024-06-03 20:01:23,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 125 transitions, 1369 flow [2024-06-03 20:01:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-03 20:01:23,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-03 20:01:23,738 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 917 flow. Second operand 9 states and 123 transitions. [2024-06-03 20:01:23,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 125 transitions, 1369 flow [2024-06-03 20:01:23,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 125 transitions, 1306 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-03 20:01:23,755 INFO L231 Difference]: Finished difference. Result has 120 places, 104 transitions, 973 flow [2024-06-03 20:01:23,755 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} [2024-06-03 20:01:23,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-03 20:01:23,756 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 104 transitions, 973 flow [2024-06-03 20:01:23,756 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) [2024-06-03 20:01:23,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:23,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:23,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 20:01:23,757 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)] === [2024-06-03 20:01:23,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1262539898, now seen corresponding path program 4 times [2024-06-03 20:01:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:23,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751007542] [2024-06-03 20:01:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:23,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:24,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:24,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:24,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751007542] [2024-06-03 20:01:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751007542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:24,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:24,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:24,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138990614] [2024-06-03 20:01:24,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:24,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:24,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:24,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:24,704 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) [2024-06-03 20:01:24,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:24,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:24,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:24,959 INFO L124 PetriNetUnfolderBase]: 366/636 cut-off events. [2024-06-03 20:01:24,959 INFO L125 PetriNetUnfolderBase]: For 21480/21480 co-relation queries the response was YES. [2024-06-03 20:01:24,960 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. [2024-06-03 20:01:24,962 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 31 changer transitions 0/128 dead transitions. [2024-06-03 20:01:24,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 128 transitions, 1414 flow [2024-06-03 20:01:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:24,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-03 20:01:24,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-03 20:01:24,963 INFO L175 Difference]: Start difference. First operand has 120 places, 104 transitions, 973 flow. Second operand 9 states and 118 transitions. [2024-06-03 20:01:24,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 128 transitions, 1414 flow [2024-06-03 20:01:24,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 128 transitions, 1317 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:24,983 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 1026 flow [2024-06-03 20:01:24,984 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} [2024-06-03 20:01:24,984 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-03 20:01:24,984 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 1026 flow [2024-06-03 20:01:24,984 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) [2024-06-03 20:01:24,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:24,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:24,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 20:01:24,985 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)] === [2024-06-03 20:01:24,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash -651404727, now seen corresponding path program 1 times [2024-06-03 20:01:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:24,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052428877] [2024-06-03 20:01:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:26,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:26,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052428877] [2024-06-03 20:01:26,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052428877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:26,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:26,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721363407] [2024-06-03 20:01:26,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:26,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:26,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:26,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:26,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:26,068 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) [2024-06-03 20:01:26,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:26,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:26,287 INFO L124 PetriNetUnfolderBase]: 363/631 cut-off events. [2024-06-03 20:01:26,287 INFO L125 PetriNetUnfolderBase]: For 21851/21851 co-relation queries the response was YES. [2024-06-03 20:01:26,289 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. [2024-06-03 20:01:26,291 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 18 changer transitions 0/120 dead transitions. [2024-06-03 20:01:26,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 120 transitions, 1290 flow [2024-06-03 20:01:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 20:01:26,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 20:01:26,292 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 1026 flow. Second operand 9 states and 102 transitions. [2024-06-03 20:01:26,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 120 transitions, 1290 flow [2024-06-03 20:01:26,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 120 transitions, 1233 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-03 20:01:26,314 INFO L231 Difference]: Finished difference. Result has 128 places, 109 transitions, 1010 flow [2024-06-03 20:01:26,314 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} [2024-06-03 20:01:26,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-03 20:01:26,315 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 109 transitions, 1010 flow [2024-06-03 20:01:26,315 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) [2024-06-03 20:01:26,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:26,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:26,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 20:01:26,315 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)] === [2024-06-03 20:01:26,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1721134590, now seen corresponding path program 5 times [2024-06-03 20:01:26,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084920052] [2024-06-03 20:01:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:26,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:27,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:27,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084920052] [2024-06-03 20:01:27,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084920052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:27,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:27,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928514852] [2024-06-03 20:01:27,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:27,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:27,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:27,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:27,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:27,288 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) [2024-06-03 20:01:27,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:27,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:27,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:27,588 INFO L124 PetriNetUnfolderBase]: 366/636 cut-off events. [2024-06-03 20:01:27,588 INFO L125 PetriNetUnfolderBase]: For 22907/22907 co-relation queries the response was YES. [2024-06-03 20:01:27,590 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. [2024-06-03 20:01:27,591 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 31 changer transitions 0/132 dead transitions. [2024-06-03 20:01:27,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 132 transitions, 1442 flow [2024-06-03 20:01:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:27,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 20:01:27,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-03 20:01:27,592 INFO L175 Difference]: Start difference. First operand has 128 places, 109 transitions, 1010 flow. Second operand 9 states and 115 transitions. [2024-06-03 20:01:27,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 132 transitions, 1442 flow [2024-06-03 20:01:27,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 132 transitions, 1387 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:27,619 INFO L231 Difference]: Finished difference. Result has 131 places, 116 transitions, 1108 flow [2024-06-03 20:01:27,619 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} [2024-06-03 20:01:27,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-03 20:01:27,619 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 116 transitions, 1108 flow [2024-06-03 20:01:27,620 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) [2024-06-03 20:01:27,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:27,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:27,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 20:01:27,620 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)] === [2024-06-03 20:01:27,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:27,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1262534101, now seen corresponding path program 2 times [2024-06-03 20:01:27,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:27,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678122206] [2024-06-03 20:01:27,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:27,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:28,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:28,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:28,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678122206] [2024-06-03 20:01:28,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678122206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:28,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:28,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:28,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863575297] [2024-06-03 20:01:28,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:28,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:28,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:28,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:28,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:28,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:28,682 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) [2024-06-03 20:01:28,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:28,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:28,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:28,888 INFO L124 PetriNetUnfolderBase]: 382/662 cut-off events. [2024-06-03 20:01:28,888 INFO L125 PetriNetUnfolderBase]: For 26184/26184 co-relation queries the response was YES. [2024-06-03 20:01:28,890 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. [2024-06-03 20:01:28,892 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 108 selfloop transitions, 27 changer transitions 0/137 dead transitions. [2024-06-03 20:01:28,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 1530 flow [2024-06-03 20:01:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:28,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 20:01:28,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 20:01:28,893 INFO L175 Difference]: Start difference. First operand has 131 places, 116 transitions, 1108 flow. Second operand 9 states and 114 transitions. [2024-06-03 20:01:28,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 1530 flow [2024-06-03 20:01:28,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 137 transitions, 1493 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-03 20:01:28,918 INFO L231 Difference]: Finished difference. Result has 136 places, 120 transitions, 1170 flow [2024-06-03 20:01:28,918 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} [2024-06-03 20:01:28,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-03 20:01:28,918 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 120 transitions, 1170 flow [2024-06-03 20:01:28,918 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) [2024-06-03 20:01:28,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:28,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:28,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 20:01:28,919 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)] === [2024-06-03 20:01:28,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:28,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1720932563, now seen corresponding path program 3 times [2024-06-03 20:01:28,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:28,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008057286] [2024-06-03 20:01:28,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:28,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:29,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:29,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008057286] [2024-06-03 20:01:29,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008057286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:29,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:29,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:29,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256921428] [2024-06-03 20:01:29,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:29,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:29,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:29,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:29,981 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) [2024-06-03 20:01:29,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:29,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:29,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:30,274 INFO L124 PetriNetUnfolderBase]: 378/656 cut-off events. [2024-06-03 20:01:30,274 INFO L125 PetriNetUnfolderBase]: For 26582/26582 co-relation queries the response was YES. [2024-06-03 20:01:30,290 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. [2024-06-03 20:01:30,291 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 111 selfloop transitions, 23 changer transitions 0/136 dead transitions. [2024-06-03 20:01:30,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 136 transitions, 1486 flow [2024-06-03 20:01:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 20:01:30,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 20:01:30,293 INFO L175 Difference]: Start difference. First operand has 136 places, 120 transitions, 1170 flow. Second operand 9 states and 111 transitions. [2024-06-03 20:01:30,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 136 transitions, 1486 flow [2024-06-03 20:01:30,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 1446 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-03 20:01:30,326 INFO L231 Difference]: Finished difference. Result has 140 places, 120 transitions, 1181 flow [2024-06-03 20:01:30,326 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} [2024-06-03 20:01:30,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-03 20:01:30,327 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 120 transitions, 1181 flow [2024-06-03 20:01:30,327 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) [2024-06-03 20:01:30,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:30,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:30,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 20:01:30,327 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)] === [2024-06-03 20:01:30,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:30,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1262332508, now seen corresponding path program 6 times [2024-06-03 20:01:30,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:30,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078035038] [2024-06-03 20:01:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:31,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:31,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078035038] [2024-06-03 20:01:31,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078035038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:31,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:31,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:31,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028667014] [2024-06-03 20:01:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:31,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:31,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:31,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:31,263 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) [2024-06-03 20:01:31,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:31,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:31,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:31,531 INFO L124 PetriNetUnfolderBase]: 372/647 cut-off events. [2024-06-03 20:01:31,531 INFO L125 PetriNetUnfolderBase]: For 26717/26717 co-relation queries the response was YES. [2024-06-03 20:01:31,534 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. [2024-06-03 20:01:31,536 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 24 changer transitions 0/136 dead transitions. [2024-06-03 20:01:31,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 136 transitions, 1497 flow [2024-06-03 20:01:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:31,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 20:01:31,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-03 20:01:31,537 INFO L175 Difference]: Start difference. First operand has 140 places, 120 transitions, 1181 flow. Second operand 9 states and 112 transitions. [2024-06-03 20:01:31,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 136 transitions, 1497 flow [2024-06-03 20:01:31,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 136 transitions, 1432 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:31,578 INFO L231 Difference]: Finished difference. Result has 141 places, 120 transitions, 1170 flow [2024-06-03 20:01:31,578 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} [2024-06-03 20:01:31,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-03 20:01:31,578 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 120 transitions, 1170 flow [2024-06-03 20:01:31,579 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) [2024-06-03 20:01:31,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:31,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:31,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 20:01:31,579 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)] === [2024-06-03 20:01:31,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash 275939062, now seen corresponding path program 7 times [2024-06-03 20:01:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:31,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202526798] [2024-06-03 20:01:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:31,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:32,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:32,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202526798] [2024-06-03 20:01:32,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202526798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:32,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:32,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383726089] [2024-06-03 20:01:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:32,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:32,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:32,578 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) [2024-06-03 20:01:32,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:32,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:32,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:32,849 INFO L124 PetriNetUnfolderBase]: 378/657 cut-off events. [2024-06-03 20:01:32,849 INFO L125 PetriNetUnfolderBase]: For 27538/27538 co-relation queries the response was YES. [2024-06-03 20:01:32,856 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. [2024-06-03 20:01:32,857 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 29 changer transitions 0/137 dead transitions. [2024-06-03 20:01:32,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 1590 flow [2024-06-03 20:01:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:32,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 20:01:32,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-03 20:01:32,858 INFO L175 Difference]: Start difference. First operand has 141 places, 120 transitions, 1170 flow. Second operand 9 states and 110 transitions. [2024-06-03 20:01:32,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 1590 flow [2024-06-03 20:01:32,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 137 transitions, 1534 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:32,896 INFO L231 Difference]: Finished difference. Result has 142 places, 122 transitions, 1203 flow [2024-06-03 20:01:32,897 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} [2024-06-03 20:01:32,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-03 20:01:32,897 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 122 transitions, 1203 flow [2024-06-03 20:01:32,897 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) [2024-06-03 20:01:32,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:32,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:32,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 20:01:32,898 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)] === [2024-06-03 20:01:32,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2118771389, now seen corresponding path program 4 times [2024-06-03 20:01:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:32,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82446849] [2024-06-03 20:01:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:32,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:34,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:34,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82446849] [2024-06-03 20:01:34,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82446849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:34,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:34,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:34,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931640536] [2024-06-03 20:01:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:34,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:34,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:34,105 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) [2024-06-03 20:01:34,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:34,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:34,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:34,444 INFO L124 PetriNetUnfolderBase]: 384/667 cut-off events. [2024-06-03 20:01:34,444 INFO L125 PetriNetUnfolderBase]: For 29410/29410 co-relation queries the response was YES. [2024-06-03 20:01:34,446 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. [2024-06-03 20:01:34,448 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 19 changer transitions 0/138 dead transitions. [2024-06-03 20:01:34,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 138 transitions, 1539 flow [2024-06-03 20:01:34,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:34,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-03 20:01:34,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-03 20:01:34,453 INFO L175 Difference]: Start difference. First operand has 142 places, 122 transitions, 1203 flow. Second operand 9 states and 106 transitions. [2024-06-03 20:01:34,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 138 transitions, 1539 flow [2024-06-03 20:01:34,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 138 transitions, 1397 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-03 20:01:34,492 INFO L231 Difference]: Finished difference. Result has 142 places, 124 transitions, 1130 flow [2024-06-03 20:01:34,492 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} [2024-06-03 20:01:34,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-03 20:01:34,493 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 124 transitions, 1130 flow [2024-06-03 20:01:34,493 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) [2024-06-03 20:01:34,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:34,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:34,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 20:01:34,494 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)] === [2024-06-03 20:01:34,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2118771172, now seen corresponding path program 8 times [2024-06-03 20:01:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325172802] [2024-06-03 20:01:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:35,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:35,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325172802] [2024-06-03 20:01:35,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325172802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:35,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:35,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:35,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450887477] [2024-06-03 20:01:35,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:35,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:35,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:35,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:35,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:35,386 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) [2024-06-03 20:01:35,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:35,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:35,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:35,685 INFO L124 PetriNetUnfolderBase]: 402/697 cut-off events. [2024-06-03 20:01:35,685 INFO L125 PetriNetUnfolderBase]: For 33318/33318 co-relation queries the response was YES. [2024-06-03 20:01:35,687 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. [2024-06-03 20:01:35,689 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-06-03 20:01:35,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 142 transitions, 1489 flow [2024-06-03 20:01:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 20:01:35,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:01:35,690 INFO L175 Difference]: Start difference. First operand has 142 places, 124 transitions, 1130 flow. Second operand 9 states and 108 transitions. [2024-06-03 20:01:35,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 142 transitions, 1489 flow [2024-06-03 20:01:35,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 142 transitions, 1440 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:35,730 INFO L231 Difference]: Finished difference. Result has 144 places, 127 transitions, 1162 flow [2024-06-03 20:01:35,730 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} [2024-06-03 20:01:35,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-03 20:01:35,730 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 127 transitions, 1162 flow [2024-06-03 20:01:35,731 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) [2024-06-03 20:01:35,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:35,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:35,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 20:01:35,731 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)] === [2024-06-03 20:01:35,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash -237074094, now seen corresponding path program 9 times [2024-06-03 20:01:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:35,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314978148] [2024-06-03 20:01:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:35,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:36,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:36,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314978148] [2024-06-03 20:01:36,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314978148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:36,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:36,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:36,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709364753] [2024-06-03 20:01:36,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:36,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:36,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:36,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:36,605 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) [2024-06-03 20:01:36,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:36,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:36,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:36,887 INFO L124 PetriNetUnfolderBase]: 408/707 cut-off events. [2024-06-03 20:01:36,887 INFO L125 PetriNetUnfolderBase]: For 32145/32145 co-relation queries the response was YES. [2024-06-03 20:01:36,889 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. [2024-06-03 20:01:36,890 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 32 changer transitions 0/144 dead transitions. [2024-06-03 20:01:36,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 144 transitions, 1604 flow [2024-06-03 20:01:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 20:01:36,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-03 20:01:36,892 INFO L175 Difference]: Start difference. First operand has 144 places, 127 transitions, 1162 flow. Second operand 9 states and 110 transitions. [2024-06-03 20:01:36,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 144 transitions, 1604 flow [2024-06-03 20:01:36,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 144 transitions, 1554 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:36,944 INFO L231 Difference]: Finished difference. Result has 146 places, 129 transitions, 1205 flow [2024-06-03 20:01:36,944 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} [2024-06-03 20:01:36,944 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-03 20:01:36,944 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 129 transitions, 1205 flow [2024-06-03 20:01:36,945 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) [2024-06-03 20:01:36,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:36,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:36,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 20:01:36,945 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)] === [2024-06-03 20:01:36,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:36,945 INFO L85 PathProgramCache]: Analyzing trace with hash 28842232, now seen corresponding path program 1 times [2024-06-03 20:01:36,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:36,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050689087] [2024-06-03 20:01:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:36,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:37,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050689087] [2024-06-03 20:01:37,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050689087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:37,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:37,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:37,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439487077] [2024-06-03 20:01:37,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:37,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:37,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:37,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:37,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:37,792 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) [2024-06-03 20:01:37,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:37,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:37,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:38,098 INFO L124 PetriNetUnfolderBase]: 406/704 cut-off events. [2024-06-03 20:01:38,098 INFO L125 PetriNetUnfolderBase]: For 32291/32291 co-relation queries the response was YES. [2024-06-03 20:01:38,100 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. [2024-06-03 20:01:38,102 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 121 selfloop transitions, 16 changer transitions 0/139 dead transitions. [2024-06-03 20:01:38,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 139 transitions, 1523 flow [2024-06-03 20:01:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:01:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:01:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-03 20:01:38,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 20:01:38,103 INFO L175 Difference]: Start difference. First operand has 146 places, 129 transitions, 1205 flow. Second operand 8 states and 90 transitions. [2024-06-03 20:01:38,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 139 transitions, 1523 flow [2024-06-03 20:01:38,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 139 transitions, 1464 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:38,143 INFO L231 Difference]: Finished difference. Result has 148 places, 131 transitions, 1214 flow [2024-06-03 20:01:38,143 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} [2024-06-03 20:01:38,143 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-03 20:01:38,143 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 131 transitions, 1214 flow [2024-06-03 20:01:38,144 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) [2024-06-03 20:01:38,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:38,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:38,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 20:01:38,144 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)] === [2024-06-03 20:01:38,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:38,144 INFO L85 PathProgramCache]: Analyzing trace with hash 19628443, now seen corresponding path program 5 times [2024-06-03 20:01:38,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:38,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644578011] [2024-06-03 20:01:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:38,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:39,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644578011] [2024-06-03 20:01:39,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644578011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:39,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:39,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594791239] [2024-06-03 20:01:39,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:39,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:39,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:39,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:39,163 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) [2024-06-03 20:01:39,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:39,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:39,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:39,488 INFO L124 PetriNetUnfolderBase]: 412/714 cut-off events. [2024-06-03 20:01:39,488 INFO L125 PetriNetUnfolderBase]: For 34655/34655 co-relation queries the response was YES. [2024-06-03 20:01:39,490 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. [2024-06-03 20:01:39,492 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 16 changer transitions 0/145 dead transitions. [2024-06-03 20:01:39,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 145 transitions, 1560 flow [2024-06-03 20:01:39,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 20:01:39,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 20:01:39,493 INFO L175 Difference]: Start difference. First operand has 148 places, 131 transitions, 1214 flow. Second operand 9 states and 102 transitions. [2024-06-03 20:01:39,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 145 transitions, 1560 flow [2024-06-03 20:01:39,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 1518 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:39,540 INFO L231 Difference]: Finished difference. Result has 151 places, 133 transitions, 1239 flow [2024-06-03 20:01:39,540 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} [2024-06-03 20:01:39,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-03 20:01:39,540 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 1239 flow [2024-06-03 20:01:39,541 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) [2024-06-03 20:01:39,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:39,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:39,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 20:01:39,541 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)] === [2024-06-03 20:01:39,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash -237073877, now seen corresponding path program 6 times [2024-06-03 20:01:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:39,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971850323] [2024-06-03 20:01:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:40,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:40,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971850323] [2024-06-03 20:01:40,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971850323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:40,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:40,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:40,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087034027] [2024-06-03 20:01:40,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:40,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:40,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:40,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:40,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:40,584 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) [2024-06-03 20:01:40,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:40,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:40,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:40,871 INFO L124 PetriNetUnfolderBase]: 408/708 cut-off events. [2024-06-03 20:01:40,871 INFO L125 PetriNetUnfolderBase]: For 34531/34531 co-relation queries the response was YES. [2024-06-03 20:01:40,873 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. [2024-06-03 20:01:40,874 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-06-03 20:01:40,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 145 transitions, 1559 flow [2024-06-03 20:01:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:40,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 20:01:40,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 20:01:40,875 INFO L175 Difference]: Start difference. First operand has 151 places, 133 transitions, 1239 flow. Second operand 9 states and 105 transitions. [2024-06-03 20:01:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 145 transitions, 1559 flow [2024-06-03 20:01:40,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 145 transitions, 1508 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:40,927 INFO L231 Difference]: Finished difference. Result has 153 places, 133 transitions, 1247 flow [2024-06-03 20:01:40,928 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} [2024-06-03 20:01:40,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-03 20:01:40,929 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 133 transitions, 1247 flow [2024-06-03 20:01:40,929 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) [2024-06-03 20:01:40,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:40,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:40,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 20:01:40,929 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)] === [2024-06-03 20:01:40,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:40,934 INFO L85 PathProgramCache]: Analyzing trace with hash 28832653, now seen corresponding path program 7 times [2024-06-03 20:01:40,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:40,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091467109] [2024-06-03 20:01:40,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:40,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:41,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091467109] [2024-06-03 20:01:41,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091467109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:41,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:41,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:41,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250324803] [2024-06-03 20:01:41,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:41,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:41,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:41,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:41,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:41,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:41,941 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) [2024-06-03 20:01:41,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:41,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:41,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:42,285 INFO L124 PetriNetUnfolderBase]: 404/702 cut-off events. [2024-06-03 20:01:42,285 INFO L125 PetriNetUnfolderBase]: For 34189/34189 co-relation queries the response was YES. [2024-06-03 20:01:42,287 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. [2024-06-03 20:01:42,288 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 18 changer transitions 0/145 dead transitions. [2024-06-03 20:01:42,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 145 transitions, 1581 flow [2024-06-03 20:01:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 20:01:42,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-03 20:01:42,289 INFO L175 Difference]: Start difference. First operand has 153 places, 133 transitions, 1247 flow. Second operand 9 states and 100 transitions. [2024-06-03 20:01:42,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 145 transitions, 1581 flow [2024-06-03 20:01:42,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 145 transitions, 1443 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:42,340 INFO L231 Difference]: Finished difference. Result has 152 places, 135 transitions, 1177 flow [2024-06-03 20:01:42,340 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} [2024-06-03 20:01:42,340 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-03 20:01:42,341 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 135 transitions, 1177 flow [2024-06-03 20:01:42,341 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) [2024-06-03 20:01:42,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:42,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:42,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 20:01:42,341 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)] === [2024-06-03 20:01:42,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:42,341 INFO L85 PathProgramCache]: Analyzing trace with hash 938445506, now seen corresponding path program 10 times [2024-06-03 20:01:42,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:42,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453090599] [2024-06-03 20:01:42,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:42,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:43,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453090599] [2024-06-03 20:01:43,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453090599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:43,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:43,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:01:43,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954044000] [2024-06-03 20:01:43,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:43,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:01:43,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:43,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:01:43,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:01:43,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:43,264 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) [2024-06-03 20:01:43,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:43,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:43,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:43,567 INFO L124 PetriNetUnfolderBase]: 398/693 cut-off events. [2024-06-03 20:01:43,567 INFO L125 PetriNetUnfolderBase]: For 33596/33596 co-relation queries the response was YES. [2024-06-03 20:01:43,569 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. [2024-06-03 20:01:43,571 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 17 changer transitions 0/150 dead transitions. [2024-06-03 20:01:43,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 150 transitions, 1539 flow [2024-06-03 20:01:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 20:01:43,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 20:01:43,573 INFO L175 Difference]: Start difference. First operand has 152 places, 135 transitions, 1177 flow. Second operand 9 states and 103 transitions. [2024-06-03 20:01:43,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 150 transitions, 1539 flow [2024-06-03 20:01:43,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 150 transitions, 1489 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:43,617 INFO L231 Difference]: Finished difference. Result has 154 places, 138 transitions, 1205 flow [2024-06-03 20:01:43,617 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} [2024-06-03 20:01:43,617 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-03 20:01:43,617 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 138 transitions, 1205 flow [2024-06-03 20:01:43,618 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) [2024-06-03 20:01:43,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:43,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:43,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 20:01:43,618 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)] === [2024-06-03 20:01:43,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:43,618 INFO L85 PathProgramCache]: Analyzing trace with hash -767822428, now seen corresponding path program 1 times [2024-06-03 20:01:43,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:43,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16718835] [2024-06-03 20:01:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:44,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:44,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:44,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16718835] [2024-06-03 20:01:44,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16718835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:44,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:44,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:44,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912745946] [2024-06-03 20:01:44,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:44,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:44,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:44,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:45,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:45,027 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) [2024-06-03 20:01:45,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:45,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:45,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:45,413 INFO L124 PetriNetUnfolderBase]: 409/714 cut-off events. [2024-06-03 20:01:45,413 INFO L125 PetriNetUnfolderBase]: For 36181/36181 co-relation queries the response was YES. [2024-06-03 20:01:45,415 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. [2024-06-03 20:01:45,417 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-06-03 20:01:45,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 165 transitions, 1713 flow [2024-06-03 20:01:45,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:01:45,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:01:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 20:01:45,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 20:01:45,418 INFO L175 Difference]: Start difference. First operand has 154 places, 138 transitions, 1205 flow. Second operand 11 states and 129 transitions. [2024-06-03 20:01:45,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 165 transitions, 1713 flow [2024-06-03 20:01:45,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 165 transitions, 1665 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:45,470 INFO L231 Difference]: Finished difference. Result has 158 places, 140 transitions, 1225 flow [2024-06-03 20:01:45,470 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} [2024-06-03 20:01:45,471 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-03 20:01:45,471 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 140 transitions, 1225 flow [2024-06-03 20:01:45,471 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) [2024-06-03 20:01:45,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:45,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:45,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 20:01:45,471 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)] === [2024-06-03 20:01:45,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:45,471 INFO L85 PathProgramCache]: Analyzing trace with hash -654258268, now seen corresponding path program 2 times [2024-06-03 20:01:45,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:45,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615132544] [2024-06-03 20:01:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:45,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:46,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:46,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:46,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615132544] [2024-06-03 20:01:46,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615132544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:46,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:46,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:46,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962120068] [2024-06-03 20:01:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:46,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:46,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:46,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:46,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:46,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:46,964 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) [2024-06-03 20:01:46,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:46,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:46,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:47,346 INFO L124 PetriNetUnfolderBase]: 416/727 cut-off events. [2024-06-03 20:01:47,346 INFO L125 PetriNetUnfolderBase]: For 37875/37875 co-relation queries the response was YES. [2024-06-03 20:01:47,348 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. [2024-06-03 20:01:47,350 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2024-06-03 20:01:47,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 166 transitions, 1650 flow [2024-06-03 20:01:47,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:01:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:01:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:01:47,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:01:47,351 INFO L175 Difference]: Start difference. First operand has 158 places, 140 transitions, 1225 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:01:47,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 166 transitions, 1650 flow [2024-06-03 20:01:47,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 166 transitions, 1602 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 20:01:47,406 INFO L231 Difference]: Finished difference. Result has 162 places, 143 transitions, 1256 flow [2024-06-03 20:01:47,406 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} [2024-06-03 20:01:47,406 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-03 20:01:47,406 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 143 transitions, 1256 flow [2024-06-03 20:01:47,406 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) [2024-06-03 20:01:47,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:47,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:47,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 20:01:47,407 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)] === [2024-06-03 20:01:47,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:47,407 INFO L85 PathProgramCache]: Analyzing trace with hash -654258144, now seen corresponding path program 1 times [2024-06-03 20:01:47,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:47,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303995735] [2024-06-03 20:01:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:47,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:48,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:48,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303995735] [2024-06-03 20:01:48,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303995735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:48,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:48,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:48,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803011659] [2024-06-03 20:01:48,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:48,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:48,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:48,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:48,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:48,792 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) [2024-06-03 20:01:48,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:48,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:48,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:49,163 INFO L124 PetriNetUnfolderBase]: 419/732 cut-off events. [2024-06-03 20:01:49,164 INFO L125 PetriNetUnfolderBase]: For 38437/38437 co-relation queries the response was YES. [2024-06-03 20:01:49,166 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. [2024-06-03 20:01:49,167 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 23 changer transitions 0/168 dead transitions. [2024-06-03 20:01:49,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 168 transitions, 1764 flow [2024-06-03 20:01:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:01:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:01:49,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 20:01:49,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-03 20:01:49,171 INFO L175 Difference]: Start difference. First operand has 162 places, 143 transitions, 1256 flow. Second operand 11 states and 131 transitions. [2024-06-03 20:01:49,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 168 transitions, 1764 flow [2024-06-03 20:01:49,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 168 transitions, 1724 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:49,228 INFO L231 Difference]: Finished difference. Result has 165 places, 145 transitions, 1285 flow [2024-06-03 20:01:49,228 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} [2024-06-03 20:01:49,229 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-03 20:01:49,229 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 145 transitions, 1285 flow [2024-06-03 20:01:49,229 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) [2024-06-03 20:01:49,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:49,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:49,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 20:01:49,229 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)] === [2024-06-03 20:01:49,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:49,230 INFO L85 PathProgramCache]: Analyzing trace with hash -654138174, now seen corresponding path program 2 times [2024-06-03 20:01:49,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:49,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365682537] [2024-06-03 20:01:49,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:49,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:50,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:50,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365682537] [2024-06-03 20:01:50,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365682537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:50,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:50,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:50,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144953362] [2024-06-03 20:01:50,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:50,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:50,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:50,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:50,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:50,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:50,632 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) [2024-06-03 20:01:50,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:50,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:50,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:50,977 INFO L124 PetriNetUnfolderBase]: 417/729 cut-off events. [2024-06-03 20:01:50,978 INFO L125 PetriNetUnfolderBase]: For 38836/38836 co-relation queries the response was YES. [2024-06-03 20:01:50,980 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. [2024-06-03 20:01:50,982 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 22 changer transitions 0/162 dead transitions. [2024-06-03 20:01:50,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 162 transitions, 1653 flow [2024-06-03 20:01:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:01:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:01:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 20:01:50,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-03 20:01:50,983 INFO L175 Difference]: Start difference. First operand has 165 places, 145 transitions, 1285 flow. Second operand 9 states and 109 transitions. [2024-06-03 20:01:50,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 162 transitions, 1653 flow [2024-06-03 20:01:51,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 162 transitions, 1602 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 20:01:51,034 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1288 flow [2024-06-03 20:01:51,034 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} [2024-06-03 20:01:51,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-03 20:01:51,034 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1288 flow [2024-06-03 20:01:51,034 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) [2024-06-03 20:01:51,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:51,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:51,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 20:01:51,035 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)] === [2024-06-03 20:01:51,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:51,035 INFO L85 PathProgramCache]: Analyzing trace with hash -654142948, now seen corresponding path program 3 times [2024-06-03 20:01:51,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:51,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676640985] [2024-06-03 20:01:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:51,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:52,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:52,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676640985] [2024-06-03 20:01:52,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676640985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:52,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:52,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:52,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34665362] [2024-06-03 20:01:52,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:52,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:52,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:52,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:52,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:52,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:52,693 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) [2024-06-03 20:01:52,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:52,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:52,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:53,095 INFO L124 PetriNetUnfolderBase]: 414/724 cut-off events. [2024-06-03 20:01:53,095 INFO L125 PetriNetUnfolderBase]: For 39244/39244 co-relation queries the response was YES. [2024-06-03 20:01:53,097 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. [2024-06-03 20:01:53,099 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 16 changer transitions 0/164 dead transitions. [2024-06-03 20:01:53,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 164 transitions, 1664 flow [2024-06-03 20:01:53,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 20:01:53,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 20:01:53,100 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1288 flow. Second operand 10 states and 115 transitions. [2024-06-03 20:01:53,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 164 transitions, 1664 flow [2024-06-03 20:01:53,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 164 transitions, 1592 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:53,166 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1252 flow [2024-06-03 20:01:53,166 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} [2024-06-03 20:01:53,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-03 20:01:53,166 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1252 flow [2024-06-03 20:01:53,166 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) [2024-06-03 20:01:53,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:53,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:53,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 20:01:53,166 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)] === [2024-06-03 20:01:53,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash -764960508, now seen corresponding path program 1 times [2024-06-03 20:01:53,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:53,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372605183] [2024-06-03 20:01:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:53,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:54,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:54,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372605183] [2024-06-03 20:01:54,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372605183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:54,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:54,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:54,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506058903] [2024-06-03 20:01:54,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:54,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:54,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:54,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:54,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:54,415 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) [2024-06-03 20:01:54,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:54,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:54,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:54,794 INFO L124 PetriNetUnfolderBase]: 436/760 cut-off events. [2024-06-03 20:01:54,794 INFO L125 PetriNetUnfolderBase]: For 44157/44157 co-relation queries the response was YES. [2024-06-03 20:01:54,797 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. [2024-06-03 20:01:54,799 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 27 changer transitions 0/171 dead transitions. [2024-06-03 20:01:54,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 171 transitions, 1814 flow [2024-06-03 20:01:54,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 20:01:54,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 20:01:54,800 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1252 flow. Second operand 10 states and 123 transitions. [2024-06-03 20:01:54,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 171 transitions, 1814 flow [2024-06-03 20:01:54,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 171 transitions, 1766 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 20:01:54,858 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 1338 flow [2024-06-03 20:01:54,858 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} [2024-06-03 20:01:54,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-03 20:01:54,859 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 1338 flow [2024-06-03 20:01:54,859 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) [2024-06-03 20:01:54,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:54,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:54,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 20:01:54,859 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)] === [2024-06-03 20:01:54,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash -649669338, now seen corresponding path program 2 times [2024-06-03 20:01:54,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:54,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240611115] [2024-06-03 20:01:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:55,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:55,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240611115] [2024-06-03 20:01:55,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240611115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:55,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:55,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:55,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000632522] [2024-06-03 20:01:55,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:55,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:55,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:55,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:55,947 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) [2024-06-03 20:01:55,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:55,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:55,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:56,350 INFO L124 PetriNetUnfolderBase]: 498/860 cut-off events. [2024-06-03 20:01:56,350 INFO L125 PetriNetUnfolderBase]: For 58624/58624 co-relation queries the response was YES. [2024-06-03 20:01:56,353 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. [2024-06-03 20:01:56,355 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 118 selfloop transitions, 67 changer transitions 0/187 dead transitions. [2024-06-03 20:01:56,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 187 transitions, 2356 flow [2024-06-03 20:01:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-03 20:01:56,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-03 20:01:56,356 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 1338 flow. Second operand 10 states and 142 transitions. [2024-06-03 20:01:56,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 187 transitions, 2356 flow [2024-06-03 20:01:56,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 187 transitions, 2290 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-03 20:01:56,434 INFO L231 Difference]: Finished difference. Result has 170 places, 159 transitions, 1558 flow [2024-06-03 20:01:56,434 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} [2024-06-03 20:01:56,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-03 20:01:56,434 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 159 transitions, 1558 flow [2024-06-03 20:01:56,435 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) [2024-06-03 20:01:56,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:56,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:56,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 20:01:56,435 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)] === [2024-06-03 20:01:56,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1742217052, now seen corresponding path program 4 times [2024-06-03 20:01:56,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:56,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593296241] [2024-06-03 20:01:56,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:56,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:57,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593296241] [2024-06-03 20:01:57,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593296241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:57,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:57,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:57,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904142670] [2024-06-03 20:01:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:57,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:57,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:57,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:57,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:57,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:57,731 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) [2024-06-03 20:01:57,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:57,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:57,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:58,002 INFO L124 PetriNetUnfolderBase]: 502/868 cut-off events. [2024-06-03 20:01:58,002 INFO L125 PetriNetUnfolderBase]: For 59050/59050 co-relation queries the response was YES. [2024-06-03 20:01:58,005 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. [2024-06-03 20:01:58,007 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 149 selfloop transitions, 29 changer transitions 0/180 dead transitions. [2024-06-03 20:01:58,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 180 transitions, 2018 flow [2024-06-03 20:01:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 20:01:58,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-03 20:01:58,008 INFO L175 Difference]: Start difference. First operand has 170 places, 159 transitions, 1558 flow. Second operand 10 states and 117 transitions. [2024-06-03 20:01:58,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 180 transitions, 2018 flow [2024-06-03 20:01:58,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 180 transitions, 1910 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-03 20:01:58,086 INFO L231 Difference]: Finished difference. Result has 177 places, 164 transitions, 1592 flow [2024-06-03 20:01:58,086 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} [2024-06-03 20:01:58,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-03 20:01:58,087 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 164 transitions, 1592 flow [2024-06-03 20:01:58,087 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) [2024-06-03 20:01:58,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:58,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:58,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 20:01:58,087 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)] === [2024-06-03 20:01:58,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1981196392, now seen corresponding path program 3 times [2024-06-03 20:01:58,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:58,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942386847] [2024-06-03 20:01:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:58,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:01:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:01:59,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:01:59,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942386847] [2024-06-03 20:01:59,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942386847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:01:59,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:01:59,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:01:59,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333259796] [2024-06-03 20:01:59,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:01:59,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:01:59,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:01:59,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:01:59,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:01:59,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:01:59,189 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) [2024-06-03 20:01:59,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:01:59,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:01:59,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:01:59,613 INFO L124 PetriNetUnfolderBase]: 518/894 cut-off events. [2024-06-03 20:01:59,613 INFO L125 PetriNetUnfolderBase]: For 63978/63978 co-relation queries the response was YES. [2024-06-03 20:01:59,616 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. [2024-06-03 20:01:59,618 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 111 selfloop transitions, 81 changer transitions 0/194 dead transitions. [2024-06-03 20:01:59,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 194 transitions, 2454 flow [2024-06-03 20:01:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:01:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:01:59,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-03 20:01:59,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-03 20:01:59,620 INFO L175 Difference]: Start difference. First operand has 177 places, 164 transitions, 1592 flow. Second operand 10 states and 137 transitions. [2024-06-03 20:01:59,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 194 transitions, 2454 flow [2024-06-03 20:01:59,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 194 transitions, 2399 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-03 20:01:59,700 INFO L231 Difference]: Finished difference. Result has 183 places, 169 transitions, 1793 flow [2024-06-03 20:01:59,700 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} [2024-06-03 20:01:59,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-03 20:01:59,700 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 169 transitions, 1793 flow [2024-06-03 20:01:59,701 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) [2024-06-03 20:01:59,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:01:59,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:01:59,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 20:01:59,701 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)] === [2024-06-03 20:01:59,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:01:59,701 INFO L85 PathProgramCache]: Analyzing trace with hash -649496358, now seen corresponding path program 4 times [2024-06-03 20:01:59,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:01:59,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308258904] [2024-06-03 20:01:59,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:01:59,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:01:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308258904] [2024-06-03 20:02:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308258904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:00,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:00,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:00,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839719858] [2024-06-03 20:02:00,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:00,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:00,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:00,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:00,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:00,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:00,886 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) [2024-06-03 20:02:00,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:00,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:00,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:01,310 INFO L124 PetriNetUnfolderBase]: 510/882 cut-off events. [2024-06-03 20:02:01,310 INFO L125 PetriNetUnfolderBase]: For 64240/64240 co-relation queries the response was YES. [2024-06-03 20:02:01,314 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. [2024-06-03 20:02:01,316 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 74 changer transitions 0/195 dead transitions. [2024-06-03 20:02:01,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 195 transitions, 2623 flow [2024-06-03 20:02:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-03 20:02:01,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-03 20:02:01,318 INFO L175 Difference]: Start difference. First operand has 183 places, 169 transitions, 1793 flow. Second operand 10 states and 138 transitions. [2024-06-03 20:02:01,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 195 transitions, 2623 flow [2024-06-03 20:02:01,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 195 transitions, 2457 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-03 20:02:01,434 INFO L231 Difference]: Finished difference. Result has 187 places, 169 transitions, 1781 flow [2024-06-03 20:02:01,434 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} [2024-06-03 20:02:01,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-03 20:02:01,435 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 169 transitions, 1781 flow [2024-06-03 20:02:01,435 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) [2024-06-03 20:02:01,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:01,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:01,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 20:02:01,435 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)] === [2024-06-03 20:02:01,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:01,435 INFO L85 PathProgramCache]: Analyzing trace with hash -484035164, now seen corresponding path program 5 times [2024-06-03 20:02:01,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:01,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738640565] [2024-06-03 20:02:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:01,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:02,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:02,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738640565] [2024-06-03 20:02:02,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738640565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:02,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:02,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:02:02,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683254048] [2024-06-03 20:02:02,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:02,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:02:02,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:02,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:02:02,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:02:02,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:02,524 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) [2024-06-03 20:02:02,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:02,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:02,802 INFO L124 PetriNetUnfolderBase]: 514/890 cut-off events. [2024-06-03 20:02:02,802 INFO L125 PetriNetUnfolderBase]: For 63832/63832 co-relation queries the response was YES. [2024-06-03 20:02:02,806 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. [2024-06-03 20:02:02,808 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 162 selfloop transitions, 18 changer transitions 0/182 dead transitions. [2024-06-03 20:02:02,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 182 transitions, 2187 flow [2024-06-03 20:02:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:02:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:02:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-03 20:02:02,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-03 20:02:02,809 INFO L175 Difference]: Start difference. First operand has 187 places, 169 transitions, 1781 flow. Second operand 9 states and 103 transitions. [2024-06-03 20:02:02,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 182 transitions, 2187 flow [2024-06-03 20:02:02,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 182 transitions, 2018 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:02,925 INFO L231 Difference]: Finished difference. Result has 187 places, 170 transitions, 1670 flow [2024-06-03 20:02:02,926 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} [2024-06-03 20:02:02,926 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-03 20:02:02,926 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 170 transitions, 1670 flow [2024-06-03 20:02:02,926 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) [2024-06-03 20:02:02,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:02,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:02,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 20:02:02,927 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)] === [2024-06-03 20:02:02,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:02,927 INFO L85 PathProgramCache]: Analyzing trace with hash -484030204, now seen corresponding path program 5 times [2024-06-03 20:02:02,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:02,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903308551] [2024-06-03 20:02:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:02,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:03,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903308551] [2024-06-03 20:02:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903308551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:03,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:03,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:03,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508073035] [2024-06-03 20:02:03,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:03,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:03,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:03,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:03,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:04,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:04,016 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) [2024-06-03 20:02:04,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:04,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:04,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:04,437 INFO L124 PetriNetUnfolderBase]: 556/958 cut-off events. [2024-06-03 20:02:04,438 INFO L125 PetriNetUnfolderBase]: For 77653/77653 co-relation queries the response was YES. [2024-06-03 20:02:04,442 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. [2024-06-03 20:02:04,444 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 156 selfloop transitions, 41 changer transitions 0/199 dead transitions. [2024-06-03 20:02:04,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 199 transitions, 2488 flow [2024-06-03 20:02:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-03 20:02:04,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-03 20:02:04,445 INFO L175 Difference]: Start difference. First operand has 187 places, 170 transitions, 1670 flow. Second operand 10 states and 132 transitions. [2024-06-03 20:02:04,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 199 transitions, 2488 flow [2024-06-03 20:02:04,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 199 transitions, 2440 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 20:02:04,535 INFO L231 Difference]: Finished difference. Result has 190 places, 177 transitions, 1839 flow [2024-06-03 20:02:04,535 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} [2024-06-03 20:02:04,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-03 20:02:04,535 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 177 transitions, 1839 flow [2024-06-03 20:02:04,535 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) [2024-06-03 20:02:04,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:04,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:04,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 20:02:04,536 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)] === [2024-06-03 20:02:04,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash -477355036, now seen corresponding path program 1 times [2024-06-03 20:02:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:04,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882361448] [2024-06-03 20:02:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:04,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:05,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:05,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:05,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882361448] [2024-06-03 20:02:05,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882361448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:05,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:05,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:05,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066592763] [2024-06-03 20:02:05,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:05,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:05,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:05,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:05,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:05,948 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) [2024-06-03 20:02:05,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:05,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:05,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:06,306 INFO L124 PetriNetUnfolderBase]: 560/966 cut-off events. [2024-06-03 20:02:06,306 INFO L125 PetriNetUnfolderBase]: For 76988/76988 co-relation queries the response was YES. [2024-06-03 20:02:06,310 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. [2024-06-03 20:02:06,312 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 171 selfloop transitions, 21 changer transitions 0/194 dead transitions. [2024-06-03 20:02:06,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 194 transitions, 2291 flow [2024-06-03 20:02:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:02:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:02:06,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 20:02:06,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-03 20:02:06,313 INFO L175 Difference]: Start difference. First operand has 190 places, 177 transitions, 1839 flow. Second operand 9 states and 107 transitions. [2024-06-03 20:02:06,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 194 transitions, 2291 flow [2024-06-03 20:02:06,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 194 transitions, 2194 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-03 20:02:06,423 INFO L231 Difference]: Finished difference. Result has 195 places, 180 transitions, 1825 flow [2024-06-03 20:02:06,423 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} [2024-06-03 20:02:06,423 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-03 20:02:06,423 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 180 transitions, 1825 flow [2024-06-03 20:02:06,423 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) [2024-06-03 20:02:06,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:06,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:06,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 20:02:06,424 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)] === [2024-06-03 20:02:06,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1815557258, now seen corresponding path program 6 times [2024-06-03 20:02:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:06,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114821029] [2024-06-03 20:02:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:06,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:07,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:07,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:07,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114821029] [2024-06-03 20:02:07,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114821029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:07,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:07,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267427788] [2024-06-03 20:02:07,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:07,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:07,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:07,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:07,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:07,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:07,629 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) [2024-06-03 20:02:07,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:07,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:07,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:08,047 INFO L124 PetriNetUnfolderBase]: 601/1032 cut-off events. [2024-06-03 20:02:08,047 INFO L125 PetriNetUnfolderBase]: For 91588/91588 co-relation queries the response was YES. [2024-06-03 20:02:08,052 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. [2024-06-03 20:02:08,055 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 159 selfloop transitions, 50 changer transitions 0/211 dead transitions. [2024-06-03 20:02:08,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 211 transitions, 2813 flow [2024-06-03 20:02:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-03 20:02:08,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-03 20:02:08,056 INFO L175 Difference]: Start difference. First operand has 195 places, 180 transitions, 1825 flow. Second operand 10 states and 134 transitions. [2024-06-03 20:02:08,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 211 transitions, 2813 flow [2024-06-03 20:02:08,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 2763 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 20:02:08,183 INFO L231 Difference]: Finished difference. Result has 201 places, 189 transitions, 2062 flow [2024-06-03 20:02:08,184 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} [2024-06-03 20:02:08,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-03 20:02:08,184 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 189 transitions, 2062 flow [2024-06-03 20:02:08,184 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) [2024-06-03 20:02:08,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:08,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:08,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 20:02:08,185 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)] === [2024-06-03 20:02:08,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:08,185 INFO L85 PathProgramCache]: Analyzing trace with hash -477601300, now seen corresponding path program 3 times [2024-06-03 20:02:08,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:08,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512976851] [2024-06-03 20:02:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:08,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:09,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:09,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512976851] [2024-06-03 20:02:09,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512976851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:09,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:09,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544962872] [2024-06-03 20:02:09,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:09,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:09,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:09,392 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) [2024-06-03 20:02:09,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:09,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:09,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:09,774 INFO L124 PetriNetUnfolderBase]: 595/1023 cut-off events. [2024-06-03 20:02:09,774 INFO L125 PetriNetUnfolderBase]: For 91551/91551 co-relation queries the response was YES. [2024-06-03 20:02:09,778 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. [2024-06-03 20:02:09,780 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 28 changer transitions 0/206 dead transitions. [2024-06-03 20:02:09,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 206 transitions, 2520 flow [2024-06-03 20:02:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:09,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 20:02:09,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 20:02:09,781 INFO L175 Difference]: Start difference. First operand has 201 places, 189 transitions, 2062 flow. Second operand 10 states and 123 transitions. [2024-06-03 20:02:09,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 206 transitions, 2520 flow [2024-06-03 20:02:09,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 206 transitions, 2419 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-03 20:02:09,919 INFO L231 Difference]: Finished difference. Result has 206 places, 189 transitions, 2023 flow [2024-06-03 20:02:09,919 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} [2024-06-03 20:02:09,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-03 20:02:09,919 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 189 transitions, 2023 flow [2024-06-03 20:02:09,920 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) [2024-06-03 20:02:09,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:09,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:09,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 20:02:09,920 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)] === [2024-06-03 20:02:09,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash -477601114, now seen corresponding path program 7 times [2024-06-03 20:02:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:09,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653668264] [2024-06-03 20:02:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:09,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:11,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:11,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653668264] [2024-06-03 20:02:11,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653668264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:11,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:11,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:11,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132531672] [2024-06-03 20:02:11,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:11,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:11,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:11,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:11,255 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) [2024-06-03 20:02:11,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:11,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:11,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:11,684 INFO L124 PetriNetUnfolderBase]: 607/1043 cut-off events. [2024-06-03 20:02:11,684 INFO L125 PetriNetUnfolderBase]: For 96136/96136 co-relation queries the response was YES. [2024-06-03 20:02:11,689 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. [2024-06-03 20:02:11,691 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 176 selfloop transitions, 33 changer transitions 0/211 dead transitions. [2024-06-03 20:02:11,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 211 transitions, 2695 flow [2024-06-03 20:02:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:11,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 20:02:11,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 20:02:11,692 INFO L175 Difference]: Start difference. First operand has 206 places, 189 transitions, 2023 flow. Second operand 10 states and 125 transitions. [2024-06-03 20:02:11,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 211 transitions, 2695 flow [2024-06-03 20:02:11,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 211 transitions, 2595 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:11,822 INFO L231 Difference]: Finished difference. Result has 206 places, 192 transitions, 2056 flow [2024-06-03 20:02:11,822 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} [2024-06-03 20:02:11,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-03 20:02:11,822 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 192 transitions, 2056 flow [2024-06-03 20:02:11,823 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) [2024-06-03 20:02:11,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:11,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:11,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 20:02:11,823 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)] === [2024-06-03 20:02:11,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash -483857224, now seen corresponding path program 8 times [2024-06-03 20:02:11,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:11,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926112425] [2024-06-03 20:02:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:11,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:12,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:12,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926112425] [2024-06-03 20:02:12,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926112425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:12,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:12,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:12,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978962388] [2024-06-03 20:02:12,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:12,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:12,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:12,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:12,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:13,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:13,003 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) [2024-06-03 20:02:13,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:13,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:13,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:13,399 INFO L124 PetriNetUnfolderBase]: 601/1035 cut-off events. [2024-06-03 20:02:13,399 INFO L125 PetriNetUnfolderBase]: For 92223/92223 co-relation queries the response was YES. [2024-06-03 20:02:13,403 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. [2024-06-03 20:02:13,406 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 164 selfloop transitions, 48 changer transitions 0/214 dead transitions. [2024-06-03 20:02:13,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 214 transitions, 2928 flow [2024-06-03 20:02:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-03 20:02:13,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-03 20:02:13,407 INFO L175 Difference]: Start difference. First operand has 206 places, 192 transitions, 2056 flow. Second operand 10 states and 135 transitions. [2024-06-03 20:02:13,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 214 transitions, 2928 flow [2024-06-03 20:02:13,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 214 transitions, 2795 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:13,558 INFO L231 Difference]: Finished difference. Result has 208 places, 192 transitions, 2026 flow [2024-06-03 20:02:13,558 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} [2024-06-03 20:02:13,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-03 20:02:13,558 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 192 transitions, 2026 flow [2024-06-03 20:02:13,558 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) [2024-06-03 20:02:13,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:13,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:13,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 20:02:13,559 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)] === [2024-06-03 20:02:13,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash -477594604, now seen corresponding path program 9 times [2024-06-03 20:02:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199859368] [2024-06-03 20:02:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:14,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:14,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199859368] [2024-06-03 20:02:14,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199859368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:14,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:14,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:14,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612047996] [2024-06-03 20:02:14,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:14,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:14,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:14,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:14,689 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) [2024-06-03 20:02:14,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:14,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:14,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:14,969 INFO L124 PetriNetUnfolderBase]: 597/1029 cut-off events. [2024-06-03 20:02:14,970 INFO L125 PetriNetUnfolderBase]: For 88651/88651 co-relation queries the response was YES. [2024-06-03 20:02:14,974 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. [2024-06-03 20:02:14,977 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 180 selfloop transitions, 30 changer transitions 0/212 dead transitions. [2024-06-03 20:02:14,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 212 transitions, 2553 flow [2024-06-03 20:02:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:14,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 20:02:14,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 20:02:14,978 INFO L175 Difference]: Start difference. First operand has 208 places, 192 transitions, 2026 flow. Second operand 10 states and 123 transitions. [2024-06-03 20:02:14,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 212 transitions, 2553 flow [2024-06-03 20:02:15,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 212 transitions, 2429 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:15,138 INFO L231 Difference]: Finished difference. Result has 210 places, 195 transitions, 2036 flow [2024-06-03 20:02:15,138 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} [2024-06-03 20:02:15,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-03 20:02:15,138 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 195 transitions, 2036 flow [2024-06-03 20:02:15,139 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) [2024-06-03 20:02:15,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:15,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:15,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 20:02:15,139 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)] === [2024-06-03 20:02:15,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash -483857410, now seen corresponding path program 4 times [2024-06-03 20:02:15,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:15,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879195229] [2024-06-03 20:02:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:15,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:16,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879195229] [2024-06-03 20:02:16,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879195229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:16,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023749930] [2024-06-03 20:02:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:16,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:16,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:16,331 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) [2024-06-03 20:02:16,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:16,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:16,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:16,731 INFO L124 PetriNetUnfolderBase]: 593/1022 cut-off events. [2024-06-03 20:02:16,731 INFO L125 PetriNetUnfolderBase]: For 86229/86229 co-relation queries the response was YES. [2024-06-03 20:02:16,736 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. [2024-06-03 20:02:16,739 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 34 changer transitions 0/210 dead transitions. [2024-06-03 20:02:16,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 210 transitions, 2494 flow [2024-06-03 20:02:16,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 20:02:16,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 20:02:16,740 INFO L175 Difference]: Start difference. First operand has 210 places, 195 transitions, 2036 flow. Second operand 10 states and 123 transitions. [2024-06-03 20:02:16,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 210 transitions, 2494 flow [2024-06-03 20:02:16,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 210 transitions, 2399 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-03 20:02:16,921 INFO L231 Difference]: Finished difference. Result has 213 places, 195 transitions, 2014 flow [2024-06-03 20:02:16,921 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} [2024-06-03 20:02:16,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-03 20:02:16,922 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 195 transitions, 2014 flow [2024-06-03 20:02:16,922 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) [2024-06-03 20:02:16,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:16,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:16,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 20:02:16,923 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)] === [2024-06-03 20:02:16,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:16,923 INFO L85 PathProgramCache]: Analyzing trace with hash 62783030, now seen corresponding path program 10 times [2024-06-03 20:02:16,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:16,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153515880] [2024-06-03 20:02:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:18,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153515880] [2024-06-03 20:02:18,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153515880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:18,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:18,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:18,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143135570] [2024-06-03 20:02:18,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:18,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:18,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:18,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:18,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:18,316 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) [2024-06-03 20:02:18,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:18,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:18,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:18,782 INFO L124 PetriNetUnfolderBase]: 609/1048 cut-off events. [2024-06-03 20:02:18,782 INFO L125 PetriNetUnfolderBase]: For 97007/97007 co-relation queries the response was YES. [2024-06-03 20:02:18,786 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. [2024-06-03 20:02:18,789 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 25 changer transitions 0/218 dead transitions. [2024-06-03 20:02:18,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 218 transitions, 2772 flow [2024-06-03 20:02:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:18,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 20:02:18,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-03 20:02:18,790 INFO L175 Difference]: Start difference. First operand has 213 places, 195 transitions, 2014 flow. Second operand 10 states and 119 transitions. [2024-06-03 20:02:18,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 218 transitions, 2772 flow [2024-06-03 20:02:18,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 218 transitions, 2691 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:18,946 INFO L231 Difference]: Finished difference. Result has 215 places, 202 transitions, 2154 flow [2024-06-03 20:02:18,947 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} [2024-06-03 20:02:18,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-03 20:02:18,947 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 2154 flow [2024-06-03 20:02:18,947 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) [2024-06-03 20:02:18,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:18,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:18,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 20:02:18,948 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)] === [2024-06-03 20:02:18,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1194358378, now seen corresponding path program 2 times [2024-06-03 20:02:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:18,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390036037] [2024-06-03 20:02:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:19,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:19,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:19,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390036037] [2024-06-03 20:02:19,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390036037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:19,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:19,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479663814] [2024-06-03 20:02:19,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:19,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:19,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:20,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:20,048 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) [2024-06-03 20:02:20,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:20,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:20,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:20,471 INFO L124 PetriNetUnfolderBase]: 613/1056 cut-off events. [2024-06-03 20:02:20,471 INFO L125 PetriNetUnfolderBase]: For 99904/99904 co-relation queries the response was YES. [2024-06-03 20:02:20,476 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. [2024-06-03 20:02:20,479 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 197 selfloop transitions, 17 changer transitions 0/216 dead transitions. [2024-06-03 20:02:20,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 216 transitions, 2647 flow [2024-06-03 20:02:20,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:02:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:02:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 20:02:20,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 20:02:20,480 INFO L175 Difference]: Start difference. First operand has 215 places, 202 transitions, 2154 flow. Second operand 9 states and 102 transitions. [2024-06-03 20:02:20,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 216 transitions, 2647 flow [2024-06-03 20:02:20,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 216 transitions, 2535 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-03 20:02:20,652 INFO L231 Difference]: Finished difference. Result has 220 places, 205 transitions, 2124 flow [2024-06-03 20:02:20,652 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} [2024-06-03 20:02:20,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-03 20:02:20,653 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 205 transitions, 2124 flow [2024-06-03 20:02:20,653 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) [2024-06-03 20:02:20,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:20,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:20,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 20:02:20,653 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)] === [2024-06-03 20:02:20,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1251148262, now seen corresponding path program 11 times [2024-06-03 20:02:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985171818] [2024-06-03 20:02:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:20,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:21,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:21,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985171818] [2024-06-03 20:02:21,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985171818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:21,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:21,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:21,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456721227] [2024-06-03 20:02:21,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:21,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:21,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:21,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:21,900 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) [2024-06-03 20:02:21,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:21,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:21,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:22,256 INFO L124 PetriNetUnfolderBase]: 629/1082 cut-off events. [2024-06-03 20:02:22,256 INFO L125 PetriNetUnfolderBase]: For 107605/107605 co-relation queries the response was YES. [2024-06-03 20:02:22,261 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. [2024-06-03 20:02:22,264 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-06-03 20:02:22,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 229 transitions, 3091 flow [2024-06-03 20:02:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 20:02:22,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:02:22,265 INFO L175 Difference]: Start difference. First operand has 220 places, 205 transitions, 2124 flow. Second operand 10 states and 120 transitions. [2024-06-03 20:02:22,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 229 transitions, 3091 flow [2024-06-03 20:02:22,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 229 transitions, 3045 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 20:02:22,461 INFO L231 Difference]: Finished difference. Result has 225 places, 214 transitions, 2392 flow [2024-06-03 20:02:22,461 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} [2024-06-03 20:02:22,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-03 20:02:22,462 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 214 transitions, 2392 flow [2024-06-03 20:02:22,462 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) [2024-06-03 20:02:22,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:22,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:22,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 20:02:22,462 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)] === [2024-06-03 20:02:22,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:22,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1251141752, now seen corresponding path program 12 times [2024-06-03 20:02:22,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:22,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329253956] [2024-06-03 20:02:22,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:22,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:23,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329253956] [2024-06-03 20:02:23,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329253956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:23,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:23,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:23,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072526896] [2024-06-03 20:02:23,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:23,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:23,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:23,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:23,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:23,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:23,536 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) [2024-06-03 20:02:23,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:23,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:23,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:24,000 INFO L124 PetriNetUnfolderBase]: 661/1134 cut-off events. [2024-06-03 20:02:24,000 INFO L125 PetriNetUnfolderBase]: For 124938/124938 co-relation queries the response was YES. [2024-06-03 20:02:24,006 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. [2024-06-03 20:02:24,010 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 50 changer transitions 0/240 dead transitions. [2024-06-03 20:02:24,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 240 transitions, 3531 flow [2024-06-03 20:02:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 20:02:24,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 20:02:24,011 INFO L175 Difference]: Start difference. First operand has 225 places, 214 transitions, 2392 flow. Second operand 10 states and 127 transitions. [2024-06-03 20:02:24,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 240 transitions, 3531 flow [2024-06-03 20:02:24,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 240 transitions, 3333 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-03 20:02:24,233 INFO L231 Difference]: Finished difference. Result has 231 places, 222 transitions, 2520 flow [2024-06-03 20:02:24,233 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} [2024-06-03 20:02:24,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-03 20:02:24,234 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 222 transitions, 2520 flow [2024-06-03 20:02:24,234 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) [2024-06-03 20:02:24,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:24,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:24,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 20:02:24,234 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)] === [2024-06-03 20:02:24,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:24,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1194604456, now seen corresponding path program 13 times [2024-06-03 20:02:24,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:24,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550445716] [2024-06-03 20:02:24,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:24,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:25,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:25,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550445716] [2024-06-03 20:02:25,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550445716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:25,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:25,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:25,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169172217] [2024-06-03 20:02:25,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:25,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:25,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:25,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:25,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:25,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:25,335 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) [2024-06-03 20:02:25,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:25,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:25,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:25,783 INFO L124 PetriNetUnfolderBase]: 673/1154 cut-off events. [2024-06-03 20:02:25,783 INFO L125 PetriNetUnfolderBase]: For 127419/127419 co-relation queries the response was YES. [2024-06-03 20:02:25,789 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. [2024-06-03 20:02:25,792 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 31 changer transitions 0/241 dead transitions. [2024-06-03 20:02:25,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 241 transitions, 3262 flow [2024-06-03 20:02:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 20:02:25,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:02:25,793 INFO L175 Difference]: Start difference. First operand has 231 places, 222 transitions, 2520 flow. Second operand 10 states and 120 transitions. [2024-06-03 20:02:25,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 241 transitions, 3262 flow [2024-06-03 20:02:26,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 241 transitions, 2959 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:26,020 INFO L231 Difference]: Finished difference. Result has 233 places, 226 transitions, 2379 flow [2024-06-03 20:02:26,020 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} [2024-06-03 20:02:26,020 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-03 20:02:26,020 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 226 transitions, 2379 flow [2024-06-03 20:02:26,020 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) [2024-06-03 20:02:26,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:26,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:26,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 20:02:26,021 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)] === [2024-06-03 20:02:26,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:26,021 INFO L85 PathProgramCache]: Analyzing trace with hash 738285334, now seen corresponding path program 6 times [2024-06-03 20:02:26,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:26,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797370679] [2024-06-03 20:02:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:26,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:26,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:26,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797370679] [2024-06-03 20:02:26,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797370679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:26,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:26,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:02:26,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349073526] [2024-06-03 20:02:26,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:26,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:02:26,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:02:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:02:27,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:27,049 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) [2024-06-03 20:02:27,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:27,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:27,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:27,375 INFO L124 PetriNetUnfolderBase]: 670/1149 cut-off events. [2024-06-03 20:02:27,375 INFO L125 PetriNetUnfolderBase]: For 119801/119801 co-relation queries the response was YES. [2024-06-03 20:02:27,380 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. [2024-06-03 20:02:27,383 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 218 selfloop transitions, 15 changer transitions 0/235 dead transitions. [2024-06-03 20:02:27,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 235 transitions, 2865 flow [2024-06-03 20:02:27,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:02:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:02:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 20:02:27,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-03 20:02:27,384 INFO L175 Difference]: Start difference. First operand has 233 places, 226 transitions, 2379 flow. Second operand 9 states and 98 transitions. [2024-06-03 20:02:27,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 235 transitions, 2865 flow [2024-06-03 20:02:27,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 235 transitions, 2809 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-03 20:02:27,638 INFO L231 Difference]: Finished difference. Result has 236 places, 226 transitions, 2357 flow [2024-06-03 20:02:27,639 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} [2024-06-03 20:02:27,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-03 20:02:27,639 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 226 transitions, 2357 flow [2024-06-03 20:02:27,639 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) [2024-06-03 20:02:27,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:27,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:27,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 20:02:27,639 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)] === [2024-06-03 20:02:27,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:27,640 INFO L85 PathProgramCache]: Analyzing trace with hash 738290294, now seen corresponding path program 14 times [2024-06-03 20:02:27,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:27,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227572276] [2024-06-03 20:02:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:27,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:28,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:28,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227572276] [2024-06-03 20:02:28,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227572276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:28,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:28,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:28,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646537858] [2024-06-03 20:02:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:28,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:28,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:28,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:28,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:28,794 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) [2024-06-03 20:02:28,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:28,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:28,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:29,302 INFO L124 PetriNetUnfolderBase]: 672/1153 cut-off events. [2024-06-03 20:02:29,304 INFO L125 PetriNetUnfolderBase]: For 121791/121791 co-relation queries the response was YES. [2024-06-03 20:02:29,309 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. [2024-06-03 20:02:29,311 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 60 changer transitions 0/245 dead transitions. [2024-06-03 20:02:29,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 245 transitions, 3198 flow [2024-06-03 20:02:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:29,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:29,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 20:02:29,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-03 20:02:29,312 INFO L175 Difference]: Start difference. First operand has 236 places, 226 transitions, 2357 flow. Second operand 10 states and 124 transitions. [2024-06-03 20:02:29,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 245 transitions, 3198 flow [2024-06-03 20:02:29,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 245 transitions, 3091 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:29,575 INFO L231 Difference]: Finished difference. Result has 237 places, 228 transitions, 2408 flow [2024-06-03 20:02:29,575 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} [2024-06-03 20:02:29,575 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-03 20:02:29,575 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 228 transitions, 2408 flow [2024-06-03 20:02:29,576 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) [2024-06-03 20:02:29,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:29,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:29,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 20:02:29,576 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)] === [2024-06-03 20:02:29,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:29,576 INFO L85 PathProgramCache]: Analyzing trace with hash 904297444, now seen corresponding path program 3 times [2024-06-03 20:02:29,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:29,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578542169] [2024-06-03 20:02:29,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:29,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:30,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:30,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578542169] [2024-06-03 20:02:30,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578542169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:30,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:30,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:30,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924225035] [2024-06-03 20:02:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:30,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:30,580 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) [2024-06-03 20:02:30,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:30,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:30,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:30,992 INFO L124 PetriNetUnfolderBase]: 676/1161 cut-off events. [2024-06-03 20:02:30,992 INFO L125 PetriNetUnfolderBase]: For 121536/121536 co-relation queries the response was YES. [2024-06-03 20:02:30,998 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. [2024-06-03 20:02:31,001 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 223 selfloop transitions, 14 changer transitions 0/239 dead transitions. [2024-06-03 20:02:31,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 239 transitions, 2920 flow [2024-06-03 20:02:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:02:31,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:02:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 20:02:31,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-03 20:02:31,003 INFO L175 Difference]: Start difference. First operand has 237 places, 228 transitions, 2408 flow. Second operand 9 states and 97 transitions. [2024-06-03 20:02:31,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 239 transitions, 2920 flow [2024-06-03 20:02:31,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 239 transitions, 2770 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:31,297 INFO L231 Difference]: Finished difference. Result has 237 places, 229 transitions, 2308 flow [2024-06-03 20:02:31,298 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} [2024-06-03 20:02:31,298 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-03 20:02:31,298 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 229 transitions, 2308 flow [2024-06-03 20:02:31,298 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) [2024-06-03 20:02:31,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:31,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:31,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 20:02:31,299 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)] === [2024-06-03 20:02:31,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1996650250, now seen corresponding path program 4 times [2024-06-03 20:02:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:31,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209249692] [2024-06-03 20:02:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:31,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:32,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:32,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209249692] [2024-06-03 20:02:32,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209249692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:32,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:32,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888972300] [2024-06-03 20:02:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:32,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:32,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:32,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:32,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:32,421 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) [2024-06-03 20:02:32,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:32,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:32,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:32,788 INFO L124 PetriNetUnfolderBase]: 680/1169 cut-off events. [2024-06-03 20:02:32,788 INFO L125 PetriNetUnfolderBase]: For 124635/124635 co-relation queries the response was YES. [2024-06-03 20:02:32,794 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. [2024-06-03 20:02:32,797 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 225 selfloop transitions, 14 changer transitions 0/241 dead transitions. [2024-06-03 20:02:32,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 241 transitions, 2842 flow [2024-06-03 20:02:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:02:32,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:02:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 20:02:32,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-03 20:02:32,798 INFO L175 Difference]: Start difference. First operand has 237 places, 229 transitions, 2308 flow. Second operand 9 states and 98 transitions. [2024-06-03 20:02:32,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 241 transitions, 2842 flow [2024-06-03 20:02:33,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 241 transitions, 2804 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-03 20:02:33,058 INFO L231 Difference]: Finished difference. Result has 239 places, 231 transitions, 2336 flow [2024-06-03 20:02:33,058 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} [2024-06-03 20:02:33,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-03 20:02:33,058 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 231 transitions, 2336 flow [2024-06-03 20:02:33,059 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) [2024-06-03 20:02:33,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:33,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:33,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 20:02:33,059 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)] === [2024-06-03 20:02:33,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:33,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1996896328, now seen corresponding path program 15 times [2024-06-03 20:02:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650736408] [2024-06-03 20:02:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:34,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650736408] [2024-06-03 20:02:34,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650736408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:34,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:34,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:34,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50707246] [2024-06-03 20:02:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:34,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:34,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:34,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:34,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:34,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:34,185 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) [2024-06-03 20:02:34,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:34,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:34,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:34,679 INFO L124 PetriNetUnfolderBase]: 694/1193 cut-off events. [2024-06-03 20:02:34,680 INFO L125 PetriNetUnfolderBase]: For 134111/134111 co-relation queries the response was YES. [2024-06-03 20:02:34,685 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. [2024-06-03 20:02:34,689 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 28 changer transitions 0/249 dead transitions. [2024-06-03 20:02:34,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 3089 flow [2024-06-03 20:02:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 20:02:34,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 20:02:34,689 INFO L175 Difference]: Start difference. First operand has 239 places, 231 transitions, 2336 flow. Second operand 10 states and 116 transitions. [2024-06-03 20:02:34,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 3089 flow [2024-06-03 20:02:34,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 249 transitions, 3023 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:34,949 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2413 flow [2024-06-03 20:02:34,950 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} [2024-06-03 20:02:34,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-03 20:02:34,950 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2413 flow [2024-06-03 20:02:34,950 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) [2024-06-03 20:02:34,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:34,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:34,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 20:02:34,951 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)] === [2024-06-03 20:02:34,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:34,951 INFO L85 PathProgramCache]: Analyzing trace with hash 618978894, now seen corresponding path program 5 times [2024-06-03 20:02:34,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:34,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136866343] [2024-06-03 20:02:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:34,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:35,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:35,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136866343] [2024-06-03 20:02:35,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136866343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:35,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:35,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:02:35,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380217988] [2024-06-03 20:02:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:35,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:02:35,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:35,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:02:35,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:02:35,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:35,949 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) [2024-06-03 20:02:35,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:35,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:35,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:36,351 INFO L124 PetriNetUnfolderBase]: 686/1180 cut-off events. [2024-06-03 20:02:36,352 INFO L125 PetriNetUnfolderBase]: For 126457/126457 co-relation queries the response was YES. [2024-06-03 20:02:36,358 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. [2024-06-03 20:02:36,361 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 20 changer transitions 0/246 dead transitions. [2024-06-03 20:02:36,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 246 transitions, 2931 flow [2024-06-03 20:02:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:02:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:02:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 20:02:36,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-03 20:02:36,362 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2413 flow. Second operand 9 states and 104 transitions. [2024-06-03 20:02:36,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 246 transitions, 2931 flow [2024-06-03 20:02:36,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 246 transitions, 2712 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-03 20:02:36,609 INFO L231 Difference]: Finished difference. Result has 238 places, 235 transitions, 2242 flow [2024-06-03 20:02:36,609 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} [2024-06-03 20:02:36,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-03 20:02:36,609 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 235 transitions, 2242 flow [2024-06-03 20:02:36,609 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) [2024-06-03 20:02:36,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:36,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:36,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 20:02:36,610 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)] === [2024-06-03 20:02:36,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 618985590, now seen corresponding path program 16 times [2024-06-03 20:02:36,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:36,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132179887] [2024-06-03 20:02:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:37,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:37,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132179887] [2024-06-03 20:02:37,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132179887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:37,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:37,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:37,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510725033] [2024-06-03 20:02:37,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:37,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:37,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:37,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:37,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:37,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:37,874 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) [2024-06-03 20:02:37,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:37,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:37,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:38,427 INFO L124 PetriNetUnfolderBase]: 682/1174 cut-off events. [2024-06-03 20:02:38,427 INFO L125 PetriNetUnfolderBase]: For 121688/121688 co-relation queries the response was YES. [2024-06-03 20:02:38,432 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. [2024-06-03 20:02:38,435 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 29 changer transitions 0/249 dead transitions. [2024-06-03 20:02:38,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 249 transitions, 2922 flow [2024-06-03 20:02:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 20:02:38,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-03 20:02:38,436 INFO L175 Difference]: Start difference. First operand has 238 places, 235 transitions, 2242 flow. Second operand 10 states and 117 transitions. [2024-06-03 20:02:38,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 249 transitions, 2922 flow [2024-06-03 20:02:38,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 249 transitions, 2783 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:38,737 INFO L231 Difference]: Finished difference. Result has 239 places, 235 transitions, 2168 flow [2024-06-03 20:02:38,738 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} [2024-06-03 20:02:38,738 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-03 20:02:38,738 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 235 transitions, 2168 flow [2024-06-03 20:02:38,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:02:38,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:38,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 20:02:38,739 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)] === [2024-06-03 20:02:38,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash 914444358, now seen corresponding path program 5 times [2024-06-03 20:02:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:38,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135219953] [2024-06-03 20:02:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:39,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:39,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135219953] [2024-06-03 20:02:39,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135219953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:39,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:39,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:39,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109524855] [2024-06-03 20:02:39,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:39,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:39,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:39,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:39,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:39,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:39,776 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) [2024-06-03 20:02:39,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:39,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:39,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:40,199 INFO L124 PetriNetUnfolderBase]: 679/1169 cut-off events. [2024-06-03 20:02:40,199 INFO L125 PetriNetUnfolderBase]: For 115577/115577 co-relation queries the response was YES. [2024-06-03 20:02:40,205 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. [2024-06-03 20:02:40,208 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 226 selfloop transitions, 17 changer transitions 0/245 dead transitions. [2024-06-03 20:02:40,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 245 transitions, 2678 flow [2024-06-03 20:02:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:02:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:02:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 20:02:40,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:02:40,209 INFO L175 Difference]: Start difference. First operand has 239 places, 235 transitions, 2168 flow. Second operand 9 states and 99 transitions. [2024-06-03 20:02:40,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 245 transitions, 2678 flow [2024-06-03 20:02:40,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 245 transitions, 2605 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:40,497 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2134 flow [2024-06-03 20:02:40,497 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} [2024-06-03 20:02:40,497 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-03 20:02:40,498 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2134 flow [2024-06-03 20:02:40,498 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) [2024-06-03 20:02:40,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:40,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:40,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 20:02:40,498 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)] === [2024-06-03 20:02:40,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash 904316100, now seen corresponding path program 17 times [2024-06-03 20:02:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:40,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044253800] [2024-06-03 20:02:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:40,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:41,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:41,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044253800] [2024-06-03 20:02:41,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044253800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:41,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:41,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:02:41,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157840016] [2024-06-03 20:02:41,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:41,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:02:41,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:41,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:02:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:02:41,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:41,701 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) [2024-06-03 20:02:41,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:41,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:41,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:42,097 INFO L124 PetriNetUnfolderBase]: 675/1163 cut-off events. [2024-06-03 20:02:42,097 INFO L125 PetriNetUnfolderBase]: For 113860/113860 co-relation queries the response was YES. [2024-06-03 20:02:42,103 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. [2024-06-03 20:02:42,106 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 227 selfloop transitions, 20 changer transitions 0/249 dead transitions. [2024-06-03 20:02:42,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 249 transitions, 2708 flow [2024-06-03 20:02:42,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 20:02:42,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:02:42,107 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2134 flow. Second operand 10 states and 110 transitions. [2024-06-03 20:02:42,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 249 transitions, 2708 flow [2024-06-03 20:02:42,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 249 transitions, 2640 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:42,392 INFO L231 Difference]: Finished difference. Result has 242 places, 237 transitions, 2163 flow [2024-06-03 20:02:42,392 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} [2024-06-03 20:02:42,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-03 20:02:42,392 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 2163 flow [2024-06-03 20:02:42,393 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) [2024-06-03 20:02:42,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:42,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:42,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 20:02:42,393 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)] === [2024-06-03 20:02:42,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash -660887753, now seen corresponding path program 1 times [2024-06-03 20:02:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:42,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557562368] [2024-06-03 20:02:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:42,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:43,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557562368] [2024-06-03 20:02:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557562368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:43,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:43,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:43,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660299366] [2024-06-03 20:02:43,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:43,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:43,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:43,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:43,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:43,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:43,931 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) [2024-06-03 20:02:43,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:43,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:43,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:44,444 INFO L124 PetriNetUnfolderBase]: 686/1184 cut-off events. [2024-06-03 20:02:44,444 INFO L125 PetriNetUnfolderBase]: For 121720/121720 co-relation queries the response was YES. [2024-06-03 20:02:44,450 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. [2024-06-03 20:02:44,453 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 25 changer transitions 0/266 dead transitions. [2024-06-03 20:02:44,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 266 transitions, 2935 flow [2024-06-03 20:02:44,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 20:02:44,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 20:02:44,454 INFO L175 Difference]: Start difference. First operand has 242 places, 237 transitions, 2163 flow. Second operand 12 states and 141 transitions. [2024-06-03 20:02:44,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 266 transitions, 2935 flow [2024-06-03 20:02:44,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 266 transitions, 2838 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:44,737 INFO L231 Difference]: Finished difference. Result has 245 places, 239 transitions, 2142 flow [2024-06-03 20:02:44,740 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} [2024-06-03 20:02:44,740 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-03 20:02:44,740 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 239 transitions, 2142 flow [2024-06-03 20:02:44,740 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) [2024-06-03 20:02:44,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:44,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:44,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 20:02:44,741 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)] === [2024-06-03 20:02:44,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 64925819, now seen corresponding path program 2 times [2024-06-03 20:02:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:44,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565167197] [2024-06-03 20:02:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:44,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:46,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565167197] [2024-06-03 20:02:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565167197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:46,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:46,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520482420] [2024-06-03 20:02:46,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:46,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:46,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:46,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:46,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:46,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:46,242 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) [2024-06-03 20:02:46,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:46,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:46,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:46,764 INFO L124 PetriNetUnfolderBase]: 697/1205 cut-off events. [2024-06-03 20:02:46,764 INFO L125 PetriNetUnfolderBase]: For 131672/131672 co-relation queries the response was YES. [2024-06-03 20:02:46,773 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. [2024-06-03 20:02:46,777 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 25 changer transitions 0/267 dead transitions. [2024-06-03 20:02:46,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 267 transitions, 2920 flow [2024-06-03 20:02:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:02:46,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:02:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-03 20:02:46,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-03 20:02:46,785 INFO L175 Difference]: Start difference. First operand has 245 places, 239 transitions, 2142 flow. Second operand 12 states and 142 transitions. [2024-06-03 20:02:46,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 267 transitions, 2920 flow [2024-06-03 20:02:47,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 267 transitions, 2868 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:47,093 INFO L231 Difference]: Finished difference. Result has 249 places, 241 transitions, 2170 flow [2024-06-03 20:02:47,094 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} [2024-06-03 20:02:47,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-03 20:02:47,094 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 241 transitions, 2170 flow [2024-06-03 20:02:47,094 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) [2024-06-03 20:02:47,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:47,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:47,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 20:02:47,095 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)] === [2024-06-03 20:02:47,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:47,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1683747825, now seen corresponding path program 3 times [2024-06-03 20:02:47,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:47,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514253454] [2024-06-03 20:02:47,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:47,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:48,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:48,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514253454] [2024-06-03 20:02:48,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514253454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:48,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:48,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:48,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573506762] [2024-06-03 20:02:48,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:48,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:48,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:48,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:48,639 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) [2024-06-03 20:02:48,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:48,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:48,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:49,423 INFO L124 PetriNetUnfolderBase]: 694/1200 cut-off events. [2024-06-03 20:02:49,423 INFO L125 PetriNetUnfolderBase]: For 129260/129260 co-relation queries the response was YES. [2024-06-03 20:02:49,430 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. [2024-06-03 20:02:49,433 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 24 changer transitions 0/266 dead transitions. [2024-06-03 20:02:49,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 266 transitions, 2766 flow [2024-06-03 20:02:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 20:02:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 20:02:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-03 20:02:49,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35336538461538464 [2024-06-03 20:02:49,434 INFO L175 Difference]: Start difference. First operand has 249 places, 241 transitions, 2170 flow. Second operand 13 states and 147 transitions. [2024-06-03 20:02:49,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 266 transitions, 2766 flow [2024-06-03 20:02:49,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 266 transitions, 2726 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 20:02:49,771 INFO L231 Difference]: Finished difference. Result has 254 places, 241 transitions, 2182 flow [2024-06-03 20:02:49,772 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} [2024-06-03 20:02:49,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 20:02:49,772 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 241 transitions, 2182 flow [2024-06-03 20:02:49,772 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) [2024-06-03 20:02:49,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:49,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:49,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 20:02:49,772 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)] === [2024-06-03 20:02:49,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:49,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2056023077, now seen corresponding path program 4 times [2024-06-03 20:02:49,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:49,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951214261] [2024-06-03 20:02:49,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:49,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:51,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:51,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951214261] [2024-06-03 20:02:51,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951214261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:51,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:51,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:51,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926177491] [2024-06-03 20:02:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:51,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:51,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:51,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:51,279 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) [2024-06-03 20:02:51,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:51,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:51,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:51,727 INFO L124 PetriNetUnfolderBase]: 698/1208 cut-off events. [2024-06-03 20:02:51,728 INFO L125 PetriNetUnfolderBase]: For 132455/132455 co-relation queries the response was YES. [2024-06-03 20:02:51,734 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. [2024-06-03 20:02:51,737 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 235 selfloop transitions, 24 changer transitions 0/261 dead transitions. [2024-06-03 20:02:51,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 261 transitions, 2762 flow [2024-06-03 20:02:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:02:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:02:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 20:02:51,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-03 20:02:51,739 INFO L175 Difference]: Start difference. First operand has 254 places, 241 transitions, 2182 flow. Second operand 10 states and 118 transitions. [2024-06-03 20:02:51,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 261 transitions, 2762 flow [2024-06-03 20:02:52,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 261 transitions, 2709 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-03 20:02:52,074 INFO L231 Difference]: Finished difference. Result has 252 places, 242 transitions, 2195 flow [2024-06-03 20:02:52,074 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} [2024-06-03 20:02:52,074 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-03 20:02:52,074 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 242 transitions, 2195 flow [2024-06-03 20:02:52,075 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) [2024-06-03 20:02:52,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:52,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:52,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 20:02:52,075 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)] === [2024-06-03 20:02:52,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:52,075 INFO L85 PathProgramCache]: Analyzing trace with hash 2056028812, now seen corresponding path program 1 times [2024-06-03 20:02:52,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:52,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8932939] [2024-06-03 20:02:52,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:52,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:53,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:53,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:53,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8932939] [2024-06-03 20:02:53,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8932939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:53,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:53,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:53,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215191325] [2024-06-03 20:02:53,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:53,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:53,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:53,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:53,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:54,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:54,038 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) [2024-06-03 20:02:54,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:54,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:54,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:54,700 INFO L124 PetriNetUnfolderBase]: 694/1202 cut-off events. [2024-06-03 20:02:54,700 INFO L125 PetriNetUnfolderBase]: For 129369/129369 co-relation queries the response was YES. [2024-06-03 20:02:54,706 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. [2024-06-03 20:02:54,709 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 27 changer transitions 0/263 dead transitions. [2024-06-03 20:02:54,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 263 transitions, 2777 flow [2024-06-03 20:02:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:54,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 20:02:54,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 20:02:54,710 INFO L175 Difference]: Start difference. First operand has 252 places, 242 transitions, 2195 flow. Second operand 11 states and 130 transitions. [2024-06-03 20:02:54,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 263 transitions, 2777 flow [2024-06-03 20:02:55,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 263 transitions, 2715 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 20:02:55,025 INFO L231 Difference]: Finished difference. Result has 254 places, 242 transitions, 2192 flow [2024-06-03 20:02:55,025 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} [2024-06-03 20:02:55,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 20:02:55,026 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 242 transitions, 2192 flow [2024-06-03 20:02:55,026 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) [2024-06-03 20:02:55,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:55,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:55,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 20:02:55,026 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)] === [2024-06-03 20:02:55,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:55,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2055875207, now seen corresponding path program 5 times [2024-06-03 20:02:55,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:55,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894282448] [2024-06-03 20:02:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:55,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:56,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:56,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894282448] [2024-06-03 20:02:56,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894282448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:56,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:56,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:56,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817973885] [2024-06-03 20:02:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:56,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:56,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:56,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:56,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:56,600 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) [2024-06-03 20:02:56,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:56,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:56,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:57,064 INFO L124 PetriNetUnfolderBase]: 691/1197 cut-off events. [2024-06-03 20:02:57,065 INFO L125 PetriNetUnfolderBase]: For 123061/123061 co-relation queries the response was YES. [2024-06-03 20:02:57,071 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. [2024-06-03 20:02:57,074 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 20 changer transitions 0/263 dead transitions. [2024-06-03 20:02:57,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 263 transitions, 2770 flow [2024-06-03 20:02:57,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:57,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:57,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 20:02:57,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 20:02:57,075 INFO L175 Difference]: Start difference. First operand has 254 places, 242 transitions, 2192 flow. Second operand 11 states and 127 transitions. [2024-06-03 20:02:57,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 263 transitions, 2770 flow [2024-06-03 20:02:57,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 263 transitions, 2702 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:57,448 INFO L231 Difference]: Finished difference. Result has 255 places, 242 transitions, 2168 flow [2024-06-03 20:02:57,448 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} [2024-06-03 20:02:57,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-03 20:02:57,449 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 242 transitions, 2168 flow [2024-06-03 20:02:57,449 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) [2024-06-03 20:02:57,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:57,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:57,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 20:02:57,449 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)] === [2024-06-03 20:02:57,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:57,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1335082051, now seen corresponding path program 6 times [2024-06-03 20:02:57,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:57,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162538777] [2024-06-03 20:02:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:57,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:02:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:02:58,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:02:58,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162538777] [2024-06-03 20:02:58,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162538777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:02:58,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:02:58,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:02:58,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046074503] [2024-06-03 20:02:58,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:02:58,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:02:58,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:02:58,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:02:58,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:02:59,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:02:59,128 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) [2024-06-03 20:02:59,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:02:59,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:02:59,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:02:59,587 INFO L124 PetriNetUnfolderBase]: 698/1210 cut-off events. [2024-06-03 20:02:59,588 INFO L125 PetriNetUnfolderBase]: For 126077/126077 co-relation queries the response was YES. [2024-06-03 20:02:59,596 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. [2024-06-03 20:02:59,599 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 63 changer transitions 0/268 dead transitions. [2024-06-03 20:02:59,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 268 transitions, 2870 flow [2024-06-03 20:02:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:02:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:02:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 20:02:59,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 20:02:59,600 INFO L175 Difference]: Start difference. First operand has 255 places, 242 transitions, 2168 flow. Second operand 11 states and 135 transitions. [2024-06-03 20:02:59,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 268 transitions, 2870 flow [2024-06-03 20:02:59,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 268 transitions, 2808 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:02:59,941 INFO L231 Difference]: Finished difference. Result has 258 places, 249 transitions, 2373 flow [2024-06-03 20:02:59,941 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} [2024-06-03 20:02:59,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 20:02:59,941 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 249 transitions, 2373 flow [2024-06-03 20:02:59,941 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) [2024-06-03 20:02:59,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:02:59,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:02:59,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 20:02:59,942 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)] === [2024-06-03 20:02:59,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:02:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1335087786, now seen corresponding path program 2 times [2024-06-03 20:02:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:02:59,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690452668] [2024-06-03 20:02:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:02:59,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:02:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:02,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:02,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690452668] [2024-06-03 20:03:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690452668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:02,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529577517] [2024-06-03 20:03:02,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:02,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:02,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:02,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:02,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:02,179 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) [2024-06-03 20:03:02,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:02,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:02,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:02,740 INFO L124 PetriNetUnfolderBase]: 694/1204 cut-off events. [2024-06-03 20:03:02,740 INFO L125 PetriNetUnfolderBase]: For 123701/123701 co-relation queries the response was YES. [2024-06-03 20:03:02,747 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. [2024-06-03 20:03:02,750 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 86 changer transitions 0/276 dead transitions. [2024-06-03 20:03:02,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 276 transitions, 3017 flow [2024-06-03 20:03:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-03 20:03:02,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-03 20:03:02,751 INFO L175 Difference]: Start difference. First operand has 258 places, 249 transitions, 2373 flow. Second operand 11 states and 141 transitions. [2024-06-03 20:03:02,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 276 transitions, 3017 flow [2024-06-03 20:03:03,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 276 transitions, 2831 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-03 20:03:03,066 INFO L231 Difference]: Finished difference. Result has 266 places, 254 transitions, 2482 flow [2024-06-03 20:03:03,067 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} [2024-06-03 20:03:03,067 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-03 20:03:03,067 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 254 transitions, 2482 flow [2024-06-03 20:03:03,067 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) [2024-06-03 20:03:03,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:03,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:03,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 20:03:03,067 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)] === [2024-06-03 20:03:03,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:03,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1340659912, now seen corresponding path program 1 times [2024-06-03 20:03:03,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:03,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657689088] [2024-06-03 20:03:03,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:03,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:04,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:04,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:04,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657689088] [2024-06-03 20:03:04,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657689088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:04,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:04,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:04,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922063092] [2024-06-03 20:03:04,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:04,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:04,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:04,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:04,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:04,675 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) [2024-06-03 20:03:04,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:04,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:04,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:05,047 INFO L124 PetriNetUnfolderBase]: 698/1212 cut-off events. [2024-06-03 20:03:05,048 INFO L125 PetriNetUnfolderBase]: For 125526/125526 co-relation queries the response was YES. [2024-06-03 20:03:05,055 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. [2024-06-03 20:03:05,059 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 48 changer transitions 0/274 dead transitions. [2024-06-03 20:03:05,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 274 transitions, 3086 flow [2024-06-03 20:03:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:05,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 20:03:05,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-03 20:03:05,060 INFO L175 Difference]: Start difference. First operand has 266 places, 254 transitions, 2482 flow. Second operand 10 states and 123 transitions. [2024-06-03 20:03:05,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 274 transitions, 3086 flow [2024-06-03 20:03:05,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 274 transitions, 2983 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 20:03:05,396 INFO L231 Difference]: Finished difference. Result has 270 places, 255 transitions, 2487 flow [2024-06-03 20:03:05,396 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} [2024-06-03 20:03:05,396 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-03 20:03:05,396 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 255 transitions, 2487 flow [2024-06-03 20:03:05,397 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) [2024-06-03 20:03:05,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:05,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:05,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 20:03:05,397 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)] === [2024-06-03 20:03:05,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1287747034, now seen corresponding path program 3 times [2024-06-03 20:03:05,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:05,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474586796] [2024-06-03 20:03:05,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:05,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:06,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474586796] [2024-06-03 20:03:06,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474586796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:06,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:06,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:06,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311582175] [2024-06-03 20:03:06,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:06,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:06,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:06,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:06,906 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) [2024-06-03 20:03:06,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:06,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:06,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:07,381 INFO L124 PetriNetUnfolderBase]: 704/1222 cut-off events. [2024-06-03 20:03:07,381 INFO L125 PetriNetUnfolderBase]: For 128497/128497 co-relation queries the response was YES. [2024-06-03 20:03:07,388 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. [2024-06-03 20:03:07,391 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 123 changer transitions 0/279 dead transitions. [2024-06-03 20:03:07,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 279 transitions, 3463 flow [2024-06-03 20:03:07,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-03 20:03:07,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-03 20:03:07,392 INFO L175 Difference]: Start difference. First operand has 270 places, 255 transitions, 2487 flow. Second operand 10 states and 137 transitions. [2024-06-03 20:03:07,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 279 transitions, 3463 flow [2024-06-03 20:03:07,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 279 transitions, 3365 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:07,727 INFO L231 Difference]: Finished difference. Result has 272 places, 257 transitions, 2666 flow [2024-06-03 20:03:07,727 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} [2024-06-03 20:03:07,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-03 20:03:07,727 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 257 transitions, 2666 flow [2024-06-03 20:03:07,727 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) [2024-06-03 20:03:07,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:07,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:07,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 20:03:07,728 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)] === [2024-06-03 20:03:07,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1287752769, now seen corresponding path program 7 times [2024-06-03 20:03:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161331877] [2024-06-03 20:03:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:07,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:08,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161331877] [2024-06-03 20:03:08,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161331877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:08,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:08,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248549162] [2024-06-03 20:03:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:08,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:08,918 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) [2024-06-03 20:03:08,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:08,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:08,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:09,327 INFO L124 PetriNetUnfolderBase]: 708/1230 cut-off events. [2024-06-03 20:03:09,327 INFO L125 PetriNetUnfolderBase]: For 132298/132298 co-relation queries the response was YES. [2024-06-03 20:03:09,334 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. [2024-06-03 20:03:09,337 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 85 changer transitions 0/276 dead transitions. [2024-06-03 20:03:09,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 276 transitions, 3278 flow [2024-06-03 20:03:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-03 20:03:09,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-03 20:03:09,338 INFO L175 Difference]: Start difference. First operand has 272 places, 257 transitions, 2666 flow. Second operand 10 states and 129 transitions. [2024-06-03 20:03:09,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 276 transitions, 3278 flow [2024-06-03 20:03:09,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 276 transitions, 3027 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:09,690 INFO L231 Difference]: Finished difference. Result has 274 places, 258 transitions, 2605 flow [2024-06-03 20:03:09,691 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} [2024-06-03 20:03:09,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-03 20:03:09,691 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 258 transitions, 2605 flow [2024-06-03 20:03:09,691 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) [2024-06-03 20:03:09,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:09,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:09,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 20:03:09,691 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)] === [2024-06-03 20:03:09,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:09,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1340651976, now seen corresponding path program 4 times [2024-06-03 20:03:09,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:09,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57938631] [2024-06-03 20:03:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:09,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:11,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57938631] [2024-06-03 20:03:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57938631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:11,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505329677] [2024-06-03 20:03:11,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:11,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:11,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:11,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:11,335 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) [2024-06-03 20:03:11,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:11,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:11,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:11,922 INFO L124 PetriNetUnfolderBase]: 704/1224 cut-off events. [2024-06-03 20:03:11,922 INFO L125 PetriNetUnfolderBase]: For 125344/125344 co-relation queries the response was YES. [2024-06-03 20:03:11,930 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. [2024-06-03 20:03:11,933 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 188 selfloop transitions, 89 changer transitions 0/279 dead transitions. [2024-06-03 20:03:11,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 279 transitions, 3221 flow [2024-06-03 20:03:11,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:11,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-03 20:03:11,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-03 20:03:11,934 INFO L175 Difference]: Start difference. First operand has 274 places, 258 transitions, 2605 flow. Second operand 11 states and 138 transitions. [2024-06-03 20:03:11,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 279 transitions, 3221 flow [2024-06-03 20:03:12,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 279 transitions, 3031 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:12,216 INFO L231 Difference]: Finished difference. Result has 277 places, 258 transitions, 2598 flow [2024-06-03 20:03:12,217 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} [2024-06-03 20:03:12,217 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-03 20:03:12,217 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 258 transitions, 2598 flow [2024-06-03 20:03:12,217 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) [2024-06-03 20:03:12,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:12,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:12,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 20:03:12,217 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)] === [2024-06-03 20:03:12,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1334934181, now seen corresponding path program 8 times [2024-06-03 20:03:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:12,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44786287] [2024-06-03 20:03:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:12,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:13,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:13,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44786287] [2024-06-03 20:03:13,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44786287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:13,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:13,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:13,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367614270] [2024-06-03 20:03:13,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:13,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:13,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:13,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:13,431 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) [2024-06-03 20:03:13,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:13,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:13,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:13,878 INFO L124 PetriNetUnfolderBase]: 715/1245 cut-off events. [2024-06-03 20:03:13,878 INFO L125 PetriNetUnfolderBase]: For 135135/135135 co-relation queries the response was YES. [2024-06-03 20:03:13,885 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. [2024-06-03 20:03:13,888 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 194 selfloop transitions, 84 changer transitions 0/280 dead transitions. [2024-06-03 20:03:13,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 280 transitions, 3412 flow [2024-06-03 20:03:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-03 20:03:13,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-03 20:03:13,889 INFO L175 Difference]: Start difference. First operand has 277 places, 258 transitions, 2598 flow. Second operand 10 states and 131 transitions. [2024-06-03 20:03:13,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 280 transitions, 3412 flow [2024-06-03 20:03:14,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 280 transitions, 3247 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:14,206 INFO L231 Difference]: Finished difference. Result has 279 places, 260 transitions, 2639 flow [2024-06-03 20:03:14,206 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} [2024-06-03 20:03:14,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-03 20:03:14,206 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 260 transitions, 2639 flow [2024-06-03 20:03:14,206 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) [2024-06-03 20:03:14,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:14,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:14,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 20:03:14,206 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)] === [2024-06-03 20:03:14,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1334937901, now seen corresponding path program 9 times [2024-06-03 20:03:14,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:14,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817581592] [2024-06-03 20:03:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:14,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:15,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:15,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817581592] [2024-06-03 20:03:15,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817581592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:15,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:15,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908360372] [2024-06-03 20:03:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:15,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:15,404 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) [2024-06-03 20:03:15,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:15,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:15,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:15,807 INFO L124 PetriNetUnfolderBase]: 712/1240 cut-off events. [2024-06-03 20:03:15,808 INFO L125 PetriNetUnfolderBase]: For 130779/130779 co-relation queries the response was YES. [2024-06-03 20:03:15,815 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. [2024-06-03 20:03:15,819 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 83 changer transitions 0/278 dead transitions. [2024-06-03 20:03:15,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 278 transitions, 3241 flow [2024-06-03 20:03:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-03 20:03:15,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 20:03:15,820 INFO L175 Difference]: Start difference. First operand has 279 places, 260 transitions, 2639 flow. Second operand 10 states and 130 transitions. [2024-06-03 20:03:15,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 278 transitions, 3241 flow [2024-06-03 20:03:16,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 278 transitions, 3119 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 20:03:16,122 INFO L231 Difference]: Finished difference. Result has 283 places, 260 transitions, 2689 flow [2024-06-03 20:03:16,122 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} [2024-06-03 20:03:16,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-03 20:03:16,122 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 260 transitions, 2689 flow [2024-06-03 20:03:16,122 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) [2024-06-03 20:03:16,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:16,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:16,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 20:03:16,122 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)] === [2024-06-03 20:03:16,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:16,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1065456643, now seen corresponding path program 10 times [2024-06-03 20:03:16,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:16,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018692949] [2024-06-03 20:03:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:16,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:17,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:17,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018692949] [2024-06-03 20:03:17,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018692949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:17,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:17,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:17,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492001346] [2024-06-03 20:03:17,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:17,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:17,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:17,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:17,319 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) [2024-06-03 20:03:17,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:17,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:17,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:17,701 INFO L124 PetriNetUnfolderBase]: 716/1248 cut-off events. [2024-06-03 20:03:17,701 INFO L125 PetriNetUnfolderBase]: For 133730/133730 co-relation queries the response was YES. [2024-06-03 20:03:17,708 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. [2024-06-03 20:03:17,711 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 235 selfloop transitions, 41 changer transitions 0/278 dead transitions. [2024-06-03 20:03:17,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 278 transitions, 3307 flow [2024-06-03 20:03:17,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-03 20:03:17,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-03 20:03:17,712 INFO L175 Difference]: Start difference. First operand has 283 places, 260 transitions, 2689 flow. Second operand 10 states and 126 transitions. [2024-06-03 20:03:17,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 278 transitions, 3307 flow [2024-06-03 20:03:18,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 278 transitions, 3135 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:18,055 INFO L231 Difference]: Finished difference. Result has 284 places, 261 transitions, 2623 flow [2024-06-03 20:03:18,055 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} [2024-06-03 20:03:18,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-03 20:03:18,056 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 261 transitions, 2623 flow [2024-06-03 20:03:18,056 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) [2024-06-03 20:03:18,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:18,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:18,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 20:03:18,056 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)] === [2024-06-03 20:03:18,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1913112806, now seen corresponding path program 2 times [2024-06-03 20:03:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:18,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723531551] [2024-06-03 20:03:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:19,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:19,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723531551] [2024-06-03 20:03:19,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723531551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:19,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:19,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:19,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265493543] [2024-06-03 20:03:19,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:19,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:19,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:19,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:19,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:19,469 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) [2024-06-03 20:03:19,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:19,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:19,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:19,873 INFO L124 PetriNetUnfolderBase]: 720/1256 cut-off events. [2024-06-03 20:03:19,874 INFO L125 PetriNetUnfolderBase]: For 136419/136419 co-relation queries the response was YES. [2024-06-03 20:03:19,881 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. [2024-06-03 20:03:19,884 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 252 selfloop transitions, 25 changer transitions 0/279 dead transitions. [2024-06-03 20:03:19,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 279 transitions, 3240 flow [2024-06-03 20:03:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 20:03:19,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-03 20:03:19,885 INFO L175 Difference]: Start difference. First operand has 284 places, 261 transitions, 2623 flow. Second operand 10 states and 117 transitions. [2024-06-03 20:03:19,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 279 transitions, 3240 flow [2024-06-03 20:03:20,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 279 transitions, 3142 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:20,204 INFO L231 Difference]: Finished difference. Result has 287 places, 263 transitions, 2605 flow [2024-06-03 20:03:20,204 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} [2024-06-03 20:03:20,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-03 20:03:20,205 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 263 transitions, 2605 flow [2024-06-03 20:03:20,205 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) [2024-06-03 20:03:20,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:20,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:20,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 20:03:20,205 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)] === [2024-06-03 20:03:20,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1610686632, now seen corresponding path program 5 times [2024-06-03 20:03:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:20,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761089011] [2024-06-03 20:03:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:21,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761089011] [2024-06-03 20:03:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761089011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:21,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:21,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757877952] [2024-06-03 20:03:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:21,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:21,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:21,844 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) [2024-06-03 20:03:21,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:21,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:21,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:22,396 INFO L124 PetriNetUnfolderBase]: 716/1250 cut-off events. [2024-06-03 20:03:22,396 INFO L125 PetriNetUnfolderBase]: For 131366/131366 co-relation queries the response was YES. [2024-06-03 20:03:22,402 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. [2024-06-03 20:03:22,404 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 48 changer transitions 0/282 dead transitions. [2024-06-03 20:03:22,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 282 transitions, 3221 flow [2024-06-03 20:03:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:22,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 20:03:22,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 20:03:22,405 INFO L175 Difference]: Start difference. First operand has 287 places, 263 transitions, 2605 flow. Second operand 11 states and 135 transitions. [2024-06-03 20:03:22,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 282 transitions, 3221 flow [2024-06-03 20:03:22,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 282 transitions, 3160 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 20:03:22,739 INFO L231 Difference]: Finished difference. Result has 291 places, 263 transitions, 2645 flow [2024-06-03 20:03:22,739 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} [2024-06-03 20:03:22,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-03 20:03:22,739 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 263 transitions, 2645 flow [2024-06-03 20:03:22,739 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) [2024-06-03 20:03:22,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:22,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:22,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 20:03:22,740 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)] === [2024-06-03 20:03:22,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:22,741 INFO L85 PathProgramCache]: Analyzing trace with hash -2120187257, now seen corresponding path program 11 times [2024-06-03 20:03:22,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:22,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815012739] [2024-06-03 20:03:22,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:22,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815012739] [2024-06-03 20:03:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815012739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:23,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:23,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619479938] [2024-06-03 20:03:23,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:23,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:23,918 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) [2024-06-03 20:03:23,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:23,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:23,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:24,402 INFO L124 PetriNetUnfolderBase]: 763/1343 cut-off events. [2024-06-03 20:03:24,403 INFO L125 PetriNetUnfolderBase]: For 192522/192522 co-relation queries the response was YES. [2024-06-03 20:03:24,413 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. [2024-06-03 20:03:24,418 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 244 selfloop transitions, 43 changer transitions 0/289 dead transitions. [2024-06-03 20:03:24,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 289 transitions, 3557 flow [2024-06-03 20:03:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:24,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-03 20:03:24,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-03 20:03:24,419 INFO L175 Difference]: Start difference. First operand has 291 places, 263 transitions, 2645 flow. Second operand 10 states and 132 transitions. [2024-06-03 20:03:24,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 289 transitions, 3557 flow [2024-06-03 20:03:24,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 289 transitions, 3416 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:24,933 INFO L231 Difference]: Finished difference. Result has 292 places, 265 transitions, 2636 flow [2024-06-03 20:03:24,934 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} [2024-06-03 20:03:24,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-03 20:03:24,934 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 265 transitions, 2636 flow [2024-06-03 20:03:24,934 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) [2024-06-03 20:03:24,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:24,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:24,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 20:03:24,935 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)] === [2024-06-03 20:03:24,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1913103506, now seen corresponding path program 3 times [2024-06-03 20:03:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:24,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259428151] [2024-06-03 20:03:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:26,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:26,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259428151] [2024-06-03 20:03:26,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259428151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:26,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:26,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:26,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28922974] [2024-06-03 20:03:26,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:26,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:26,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:26,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:26,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:26,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:26,444 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) [2024-06-03 20:03:26,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:26,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:26,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:26,884 INFO L124 PetriNetUnfolderBase]: 767/1351 cut-off events. [2024-06-03 20:03:26,884 INFO L125 PetriNetUnfolderBase]: For 196493/196493 co-relation queries the response was YES. [2024-06-03 20:03:26,894 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. [2024-06-03 20:03:26,898 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 253 selfloop transitions, 27 changer transitions 0/282 dead transitions. [2024-06-03 20:03:26,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 282 transitions, 3248 flow [2024-06-03 20:03:26,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 20:03:26,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-03 20:03:26,899 INFO L175 Difference]: Start difference. First operand has 292 places, 265 transitions, 2636 flow. Second operand 10 states and 117 transitions. [2024-06-03 20:03:26,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 282 transitions, 3248 flow [2024-06-03 20:03:27,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 282 transitions, 3174 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-03 20:03:27,363 INFO L231 Difference]: Finished difference. Result has 296 places, 266 transitions, 2632 flow [2024-06-03 20:03:27,364 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} [2024-06-03 20:03:27,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-03 20:03:27,364 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 266 transitions, 2632 flow [2024-06-03 20:03:27,364 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) [2024-06-03 20:03:27,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:27,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:27,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 20:03:27,364 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)] === [2024-06-03 20:03:27,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:27,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1264758433, now seen corresponding path program 12 times [2024-06-03 20:03:27,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:27,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500073852] [2024-06-03 20:03:27,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:27,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:28,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:28,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500073852] [2024-06-03 20:03:28,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500073852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:28,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:28,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:28,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295685817] [2024-06-03 20:03:28,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:28,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:28,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:28,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:28,632 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) [2024-06-03 20:03:28,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:28,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:28,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:29,086 INFO L124 PetriNetUnfolderBase]: 755/1331 cut-off events. [2024-06-03 20:03:29,086 INFO L125 PetriNetUnfolderBase]: For 200767/200767 co-relation queries the response was YES. [2024-06-03 20:03:29,094 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. [2024-06-03 20:03:29,098 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 250 selfloop transitions, 28 changer transitions 9/289 dead transitions. [2024-06-03 20:03:29,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 289 transitions, 3336 flow [2024-06-03 20:03:29,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:29,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-03 20:03:29,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-03 20:03:29,099 INFO L175 Difference]: Start difference. First operand has 296 places, 266 transitions, 2632 flow. Second operand 10 states and 127 transitions. [2024-06-03 20:03:29,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 289 transitions, 3336 flow [2024-06-03 20:03:29,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 289 transitions, 3276 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:29,541 INFO L231 Difference]: Finished difference. Result has 298 places, 264 transitions, 2617 flow [2024-06-03 20:03:29,541 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} [2024-06-03 20:03:29,541 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-03 20:03:29,541 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 264 transitions, 2617 flow [2024-06-03 20:03:29,541 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) [2024-06-03 20:03:29,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:29,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:29,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 20:03:29,542 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)] === [2024-06-03 20:03:29,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1920522116, now seen corresponding path program 4 times [2024-06-03 20:03:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:29,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841776039] [2024-06-03 20:03:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:29,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:30,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:30,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841776039] [2024-06-03 20:03:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841776039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:30,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:30,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:30,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718605250] [2024-06-03 20:03:30,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:30,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:30,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:30,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:30,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:31,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:31,103 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) [2024-06-03 20:03:31,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:31,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:31,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:31,507 INFO L124 PetriNetUnfolderBase]: 723/1271 cut-off events. [2024-06-03 20:03:31,507 INFO L125 PetriNetUnfolderBase]: For 152079/152079 co-relation queries the response was YES. [2024-06-03 20:03:31,516 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. [2024-06-03 20:03:31,520 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 253 selfloop transitions, 27 changer transitions 0/282 dead transitions. [2024-06-03 20:03:31,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 282 transitions, 3237 flow [2024-06-03 20:03:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:31,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 20:03:31,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:03:31,521 INFO L175 Difference]: Start difference. First operand has 298 places, 264 transitions, 2617 flow. Second operand 10 states and 120 transitions. [2024-06-03 20:03:31,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 282 transitions, 3237 flow [2024-06-03 20:03:31,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 282 transitions, 3165 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:31,977 INFO L231 Difference]: Finished difference. Result has 300 places, 265 transitions, 2617 flow [2024-06-03 20:03:31,978 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} [2024-06-03 20:03:31,978 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-03 20:03:31,978 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 265 transitions, 2617 flow [2024-06-03 20:03:31,978 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) [2024-06-03 20:03:31,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:31,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:31,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 20:03:31,978 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)] === [2024-06-03 20:03:31,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:31,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1920731862, now seen corresponding path program 6 times [2024-06-03 20:03:31,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:31,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151825332] [2024-06-03 20:03:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:31,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:33,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151825332] [2024-06-03 20:03:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151825332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:33,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:33,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:33,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28524721] [2024-06-03 20:03:33,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:33,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:33,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:33,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:33,890 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) [2024-06-03 20:03:33,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:33,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:33,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:34,422 INFO L124 PetriNetUnfolderBase]: 729/1281 cut-off events. [2024-06-03 20:03:34,422 INFO L125 PetriNetUnfolderBase]: For 155217/155217 co-relation queries the response was YES. [2024-06-03 20:03:34,431 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. [2024-06-03 20:03:34,434 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 251 selfloop transitions, 33 changer transitions 0/286 dead transitions. [2024-06-03 20:03:34,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 286 transitions, 3265 flow [2024-06-03 20:03:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:34,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 20:03:34,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:03:34,437 INFO L175 Difference]: Start difference. First operand has 300 places, 265 transitions, 2617 flow. Second operand 11 states and 132 transitions. [2024-06-03 20:03:34,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 286 transitions, 3265 flow [2024-06-03 20:03:34,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 286 transitions, 3203 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:34,955 INFO L231 Difference]: Finished difference. Result has 303 places, 267 transitions, 2654 flow [2024-06-03 20:03:34,955 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} [2024-06-03 20:03:34,956 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-03 20:03:34,956 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 267 transitions, 2654 flow [2024-06-03 20:03:34,956 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) [2024-06-03 20:03:34,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:34,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:34,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 20:03:34,956 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)] === [2024-06-03 20:03:34,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1920530052, now seen corresponding path program 7 times [2024-06-03 20:03:34,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:34,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517505817] [2024-06-03 20:03:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:34,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:36,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:36,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517505817] [2024-06-03 20:03:36,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517505817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:36,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:36,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232589792] [2024-06-03 20:03:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:36,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:36,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:36,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:36,647 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) [2024-06-03 20:03:36,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:36,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:36,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:37,277 INFO L124 PetriNetUnfolderBase]: 777/1365 cut-off events. [2024-06-03 20:03:37,278 INFO L125 PetriNetUnfolderBase]: For 158646/158646 co-relation queries the response was YES. [2024-06-03 20:03:37,286 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. [2024-06-03 20:03:37,290 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 269 selfloop transitions, 34 changer transitions 0/305 dead transitions. [2024-06-03 20:03:37,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 305 transitions, 3560 flow [2024-06-03 20:03:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:03:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:03:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 20:03:37,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 20:03:37,291 INFO L175 Difference]: Start difference. First operand has 303 places, 267 transitions, 2654 flow. Second operand 12 states and 138 transitions. [2024-06-03 20:03:37,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 305 transitions, 3560 flow [2024-06-03 20:03:37,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 305 transitions, 3442 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:37,760 INFO L231 Difference]: Finished difference. Result has 312 places, 286 transitions, 2915 flow [2024-06-03 20:03:37,760 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} [2024-06-03 20:03:37,760 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-03 20:03:37,761 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 286 transitions, 2915 flow [2024-06-03 20:03:37,761 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) [2024-06-03 20:03:37,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:37,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:37,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 20:03:37,761 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)] === [2024-06-03 20:03:37,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:37,762 INFO L85 PathProgramCache]: Analyzing trace with hash -447691430, now seen corresponding path program 5 times [2024-06-03 20:03:37,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:37,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985895508] [2024-06-03 20:03:37,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:37,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:39,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:39,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985895508] [2024-06-03 20:03:39,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985895508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:39,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:39,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:39,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177115565] [2024-06-03 20:03:39,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:39,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:39,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:39,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:39,337 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) [2024-06-03 20:03:39,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:39,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:39,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:39,743 INFO L124 PetriNetUnfolderBase]: 781/1373 cut-off events. [2024-06-03 20:03:39,743 INFO L125 PetriNetUnfolderBase]: For 162310/162310 co-relation queries the response was YES. [2024-06-03 20:03:39,752 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. [2024-06-03 20:03:39,755 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 262 selfloop transitions, 40 changer transitions 0/304 dead transitions. [2024-06-03 20:03:39,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 304 transitions, 3581 flow [2024-06-03 20:03:39,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:39,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 20:03:39,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-03 20:03:39,757 INFO L175 Difference]: Start difference. First operand has 312 places, 286 transitions, 2915 flow. Second operand 10 states and 122 transitions. [2024-06-03 20:03:39,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 304 transitions, 3581 flow [2024-06-03 20:03:40,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 304 transitions, 3535 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-03 20:03:40,246 INFO L231 Difference]: Finished difference. Result has 319 places, 287 transitions, 2969 flow [2024-06-03 20:03:40,246 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} [2024-06-03 20:03:40,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-03 20:03:40,247 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 287 transitions, 2969 flow [2024-06-03 20:03:40,247 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) [2024-06-03 20:03:40,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:40,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:40,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 20:03:40,247 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)] === [2024-06-03 20:03:40,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:40,248 INFO L85 PathProgramCache]: Analyzing trace with hash -447699366, now seen corresponding path program 8 times [2024-06-03 20:03:40,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:40,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098955915] [2024-06-03 20:03:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:40,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:42,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:42,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098955915] [2024-06-03 20:03:42,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098955915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:42,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322303107] [2024-06-03 20:03:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:42,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:42,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:42,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:42,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:42,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:42,315 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) [2024-06-03 20:03:42,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:42,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:42,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:43,089 INFO L124 PetriNetUnfolderBase]: 787/1383 cut-off events. [2024-06-03 20:03:43,089 INFO L125 PetriNetUnfolderBase]: For 165621/165621 co-relation queries the response was YES. [2024-06-03 20:03:43,098 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. [2024-06-03 20:03:43,102 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 72 changer transitions 0/311 dead transitions. [2024-06-03 20:03:43,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 311 transitions, 4067 flow [2024-06-03 20:03:43,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-03 20:03:43,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 20:03:43,103 INFO L175 Difference]: Start difference. First operand has 319 places, 287 transitions, 2969 flow. Second operand 11 states and 143 transitions. [2024-06-03 20:03:43,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 311 transitions, 4067 flow [2024-06-03 20:03:43,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 311 transitions, 3977 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:43,620 INFO L231 Difference]: Finished difference. Result has 322 places, 289 transitions, 3052 flow [2024-06-03 20:03:43,620 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} [2024-06-03 20:03:43,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-03 20:03:43,620 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 289 transitions, 3052 flow [2024-06-03 20:03:43,621 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) [2024-06-03 20:03:43,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:43,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:43,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 20:03:43,621 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)] === [2024-06-03 20:03:43,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash -447901176, now seen corresponding path program 9 times [2024-06-03 20:03:43,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:43,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707232122] [2024-06-03 20:03:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:43,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707232122] [2024-06-03 20:03:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707232122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:45,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:45,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283430240] [2024-06-03 20:03:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:45,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:45,571 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) [2024-06-03 20:03:45,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:45,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:45,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:46,161 INFO L124 PetriNetUnfolderBase]: 783/1377 cut-off events. [2024-06-03 20:03:46,162 INFO L125 PetriNetUnfolderBase]: For 159619/159619 co-relation queries the response was YES. [2024-06-03 20:03:46,169 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. [2024-06-03 20:03:46,172 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 57 changer transitions 0/309 dead transitions. [2024-06-03 20:03:46,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 309 transitions, 3726 flow [2024-06-03 20:03:46,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-03 20:03:46,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-03 20:03:46,173 INFO L175 Difference]: Start difference. First operand has 322 places, 289 transitions, 3052 flow. Second operand 11 states and 138 transitions. [2024-06-03 20:03:46,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 309 transitions, 3726 flow [2024-06-03 20:03:46,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 309 transitions, 3558 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-03 20:03:46,648 INFO L231 Difference]: Finished difference. Result has 324 places, 289 transitions, 3003 flow [2024-06-03 20:03:46,648 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} [2024-06-03 20:03:46,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-03 20:03:46,649 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 289 transitions, 3003 flow [2024-06-03 20:03:46,649 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) [2024-06-03 20:03:46,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:46,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:46,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 20:03:46,649 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)] === [2024-06-03 20:03:46,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:46,650 INFO L85 PathProgramCache]: Analyzing trace with hash -447906911, now seen corresponding path program 13 times [2024-06-03 20:03:46,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:46,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340001978] [2024-06-03 20:03:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:46,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:47,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:47,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340001978] [2024-06-03 20:03:47,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340001978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:47,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:47,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:47,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928557858] [2024-06-03 20:03:47,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:47,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:47,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:47,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:47,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:48,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:48,051 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) [2024-06-03 20:03:48,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:48,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:48,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:48,547 INFO L124 PetriNetUnfolderBase]: 780/1372 cut-off events. [2024-06-03 20:03:48,547 INFO L125 PetriNetUnfolderBase]: For 152452/152452 co-relation queries the response was YES. [2024-06-03 20:03:48,557 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. [2024-06-03 20:03:48,560 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 258 selfloop transitions, 46 changer transitions 0/306 dead transitions. [2024-06-03 20:03:48,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 306 transitions, 3657 flow [2024-06-03 20:03:48,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 20:03:48,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:03:48,561 INFO L175 Difference]: Start difference. First operand has 324 places, 289 transitions, 3003 flow. Second operand 11 states and 132 transitions. [2024-06-03 20:03:48,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 306 transitions, 3657 flow [2024-06-03 20:03:49,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 306 transitions, 3487 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 20:03:49,099 INFO L231 Difference]: Finished difference. Result has 324 places, 289 transitions, 2929 flow [2024-06-03 20:03:49,099 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} [2024-06-03 20:03:49,100 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-03 20:03:49,100 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 289 transitions, 2929 flow [2024-06-03 20:03:49,100 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) [2024-06-03 20:03:49,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:49,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:49,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 20:03:49,100 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)] === [2024-06-03 20:03:49,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1746617509, now seen corresponding path program 14 times [2024-06-03 20:03:49,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:49,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801516102] [2024-06-03 20:03:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:49,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:50,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:50,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801516102] [2024-06-03 20:03:50,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801516102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:50,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:50,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:50,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928266786] [2024-06-03 20:03:50,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:50,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:50,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:50,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:50,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:50,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:50,513 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) [2024-06-03 20:03:50,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:50,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:50,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:51,098 INFO L124 PetriNetUnfolderBase]: 813/1439 cut-off events. [2024-06-03 20:03:51,098 INFO L125 PetriNetUnfolderBase]: For 205845/205845 co-relation queries the response was YES. [2024-06-03 20:03:51,108 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. [2024-06-03 20:03:51,112 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 261 selfloop transitions, 48 changer transitions 0/311 dead transitions. [2024-06-03 20:03:51,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 311 transitions, 3847 flow [2024-06-03 20:03:51,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:51,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 20:03:51,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 20:03:51,113 INFO L175 Difference]: Start difference. First operand has 324 places, 289 transitions, 2929 flow. Second operand 11 states and 134 transitions. [2024-06-03 20:03:51,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 311 transitions, 3847 flow [2024-06-03 20:03:51,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 311 transitions, 3745 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:03:51,749 INFO L231 Difference]: Finished difference. Result has 325 places, 290 transitions, 2949 flow [2024-06-03 20:03:51,749 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} [2024-06-03 20:03:51,749 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-03 20:03:51,749 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 290 transitions, 2949 flow [2024-06-03 20:03:51,749 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) [2024-06-03 20:03:51,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:51,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:51,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 20:03:51,750 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)] === [2024-06-03 20:03:51,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2008692826, now seen corresponding path program 6 times [2024-06-03 20:03:51,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:51,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93171502] [2024-06-03 20:03:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:51,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:53,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93171502] [2024-06-03 20:03:53,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93171502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:53,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:53,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:03:53,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229977692] [2024-06-03 20:03:53,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:53,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:03:53,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:03:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:03:53,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:53,463 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) [2024-06-03 20:03:53,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:53,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:53,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:53,946 INFO L124 PetriNetUnfolderBase]: 817/1447 cut-off events. [2024-06-03 20:03:53,946 INFO L125 PetriNetUnfolderBase]: For 210101/210101 co-relation queries the response was YES. [2024-06-03 20:03:53,957 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. [2024-06-03 20:03:53,962 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 284 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2024-06-03 20:03:53,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 304 transitions, 3603 flow [2024-06-03 20:03:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 20:03:53,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 20:03:53,963 INFO L175 Difference]: Start difference. First operand has 325 places, 290 transitions, 2949 flow. Second operand 10 states and 111 transitions. [2024-06-03 20:03:53,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 304 transitions, 3603 flow [2024-06-03 20:03:54,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 304 transitions, 3392 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-03 20:03:54,465 INFO L231 Difference]: Finished difference. Result has 324 places, 291 transitions, 2796 flow [2024-06-03 20:03:54,465 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} [2024-06-03 20:03:54,465 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-03 20:03:54,465 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 291 transitions, 2796 flow [2024-06-03 20:03:54,465 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) [2024-06-03 20:03:54,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:54,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:54,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 20:03:54,466 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)] === [2024-06-03 20:03:54,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:54,466 INFO L85 PathProgramCache]: Analyzing trace with hash 130899178, now seen corresponding path program 7 times [2024-06-03 20:03:54,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:54,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866582665] [2024-06-03 20:03:54,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:54,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:56,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:56,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:56,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866582665] [2024-06-03 20:03:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866582665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:56,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:56,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:56,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062705163] [2024-06-03 20:03:56,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:56,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:56,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:56,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:56,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:56,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:56,111 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) [2024-06-03 20:03:56,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:56,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:56,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:56,677 INFO L124 PetriNetUnfolderBase]: 821/1455 cut-off events. [2024-06-03 20:03:56,677 INFO L125 PetriNetUnfolderBase]: For 213999/213999 co-relation queries the response was YES. [2024-06-03 20:03:56,686 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. [2024-06-03 20:03:56,690 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 273 selfloop transitions, 30 changer transitions 0/305 dead transitions. [2024-06-03 20:03:56,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 305 transitions, 3454 flow [2024-06-03 20:03:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:03:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:03:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 20:03:56,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-03 20:03:56,691 INFO L175 Difference]: Start difference. First operand has 324 places, 291 transitions, 2796 flow. Second operand 10 states and 114 transitions. [2024-06-03 20:03:56,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 305 transitions, 3454 flow [2024-06-03 20:03:57,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 305 transitions, 3406 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 20:03:57,424 INFO L231 Difference]: Finished difference. Result has 326 places, 292 transitions, 2832 flow [2024-06-03 20:03:57,424 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} [2024-06-03 20:03:57,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-03 20:03:57,424 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 292 transitions, 2832 flow [2024-06-03 20:03:57,424 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) [2024-06-03 20:03:57,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:03:57,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:03:57,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 20:03:57,424 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)] === [2024-06-03 20:03:57,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:03:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2008684890, now seen corresponding path program 10 times [2024-06-03 20:03:57,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:03:57,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99223695] [2024-06-03 20:03:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:03:57,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:03:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:03:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:03:58,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:03:58,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99223695] [2024-06-03 20:03:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99223695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:03:58,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:03:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:03:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280987933] [2024-06-03 20:03:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:03:58,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:03:58,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:03:58,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:03:58,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:03:58,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:03:58,761 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) [2024-06-03 20:03:58,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:03:58,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:03:58,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:03:59,382 INFO L124 PetriNetUnfolderBase]: 827/1465 cut-off events. [2024-06-03 20:03:59,382 INFO L125 PetriNetUnfolderBase]: For 217953/217953 co-relation queries the response was YES. [2024-06-03 20:03:59,390 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. [2024-06-03 20:03:59,393 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 277 selfloop transitions, 31 changer transitions 0/310 dead transitions. [2024-06-03 20:03:59,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 310 transitions, 3726 flow [2024-06-03 20:03:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:03:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:03:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 20:03:59,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 20:03:59,394 INFO L175 Difference]: Start difference. First operand has 326 places, 292 transitions, 2832 flow. Second operand 11 states and 127 transitions. [2024-06-03 20:03:59,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 310 transitions, 3726 flow [2024-06-03 20:04:00,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 310 transitions, 3652 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 20:04:00,080 INFO L231 Difference]: Finished difference. Result has 329 places, 294 transitions, 2851 flow [2024-06-03 20:04:00,081 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} [2024-06-03 20:04:00,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-03 20:04:00,081 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 294 transitions, 2851 flow [2024-06-03 20:04:00,081 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) [2024-06-03 20:04:00,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:00,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:00,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 20:04:00,081 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)] === [2024-06-03 20:04:00,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:00,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1428028902, now seen corresponding path program 11 times [2024-06-03 20:04:00,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:00,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739666344] [2024-06-03 20:04:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:00,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:01,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:01,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739666344] [2024-06-03 20:04:01,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739666344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:01,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:01,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212683240] [2024-06-03 20:04:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:01,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:01,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:01,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:01,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:01,704 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) [2024-06-03 20:04:01,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:01,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:01,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:02,298 INFO L124 PetriNetUnfolderBase]: 833/1475 cut-off events. [2024-06-03 20:04:02,298 INFO L125 PetriNetUnfolderBase]: For 222661/222661 co-relation queries the response was YES. [2024-06-03 20:04:02,305 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. [2024-06-03 20:04:02,308 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 263 selfloop transitions, 48 changer transitions 0/313 dead transitions. [2024-06-03 20:04:02,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 313 transitions, 3551 flow [2024-06-03 20:04:02,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:02,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 20:04:02,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 20:04:02,309 INFO L175 Difference]: Start difference. First operand has 329 places, 294 transitions, 2851 flow. Second operand 11 states and 130 transitions. [2024-06-03 20:04:02,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 313 transitions, 3551 flow [2024-06-03 20:04:02,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 313 transitions, 3473 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:02,889 INFO L231 Difference]: Finished difference. Result has 331 places, 297 transitions, 2910 flow [2024-06-03 20:04:02,889 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} [2024-06-03 20:04:02,889 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-03 20:04:02,889 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 297 transitions, 2910 flow [2024-06-03 20:04:02,889 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) [2024-06-03 20:04:02,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:02,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:02,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 20:04:02,890 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)] === [2024-06-03 20:04:02,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:02,890 INFO L85 PathProgramCache]: Analyzing trace with hash 2008483080, now seen corresponding path program 12 times [2024-06-03 20:04:02,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:02,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001975915] [2024-06-03 20:04:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:02,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:04,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:04,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001975915] [2024-06-03 20:04:04,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001975915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:04,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:04,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:04,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421171366] [2024-06-03 20:04:04,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:04,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:04,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:04,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:04,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:04,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:04,465 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) [2024-06-03 20:04:04,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:04,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:04,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:05,037 INFO L124 PetriNetUnfolderBase]: 829/1469 cut-off events. [2024-06-03 20:04:05,037 INFO L125 PetriNetUnfolderBase]: For 215202/215202 co-relation queries the response was YES. [2024-06-03 20:04:05,047 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. [2024-06-03 20:04:05,050 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 285 selfloop transitions, 25 changer transitions 0/312 dead transitions. [2024-06-03 20:04:05,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 312 transitions, 3572 flow [2024-06-03 20:04:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 20:04:05,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-03 20:04:05,051 INFO L175 Difference]: Start difference. First operand has 331 places, 297 transitions, 2910 flow. Second operand 11 states and 123 transitions. [2024-06-03 20:04:05,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 312 transitions, 3572 flow [2024-06-03 20:04:05,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 312 transitions, 3470 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-03 20:04:05,659 INFO L231 Difference]: Finished difference. Result has 336 places, 297 transitions, 2863 flow [2024-06-03 20:04:05,659 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} [2024-06-03 20:04:05,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-03 20:04:05,660 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 297 transitions, 2863 flow [2024-06-03 20:04:05,660 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) [2024-06-03 20:04:05,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:05,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:05,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 20:04:05,660 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)] === [2024-06-03 20:04:05,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 125177167, now seen corresponding path program 15 times [2024-06-03 20:04:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:05,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218736156] [2024-06-03 20:04:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:05,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:06,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:06,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218736156] [2024-06-03 20:04:06,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218736156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:06,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:06,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224219305] [2024-06-03 20:04:06,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:06,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:06,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:07,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:07,080 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) [2024-06-03 20:04:07,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:07,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:07,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:07,625 INFO L124 PetriNetUnfolderBase]: 836/1482 cut-off events. [2024-06-03 20:04:07,625 INFO L125 PetriNetUnfolderBase]: For 219236/219236 co-relation queries the response was YES. [2024-06-03 20:04:07,634 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. [2024-06-03 20:04:07,637 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 263 selfloop transitions, 50 changer transitions 0/315 dead transitions. [2024-06-03 20:04:07,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 315 transitions, 3566 flow [2024-06-03 20:04:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:04:07,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:04:07,638 INFO L175 Difference]: Start difference. First operand has 336 places, 297 transitions, 2863 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:04:07,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 315 transitions, 3566 flow [2024-06-03 20:04:08,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 315 transitions, 3491 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:08,277 INFO L231 Difference]: Finished difference. Result has 337 places, 300 transitions, 2931 flow [2024-06-03 20:04:08,277 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} [2024-06-03 20:04:08,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-03 20:04:08,277 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 300 transitions, 2931 flow [2024-06-03 20:04:08,277 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) [2024-06-03 20:04:08,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:08,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:08,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 20:04:08,277 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)] === [2024-06-03 20:04:08,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:08,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2031549586, now seen corresponding path program 8 times [2024-06-03 20:04:08,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:08,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083091041] [2024-06-03 20:04:08,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:08,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:09,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:09,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083091041] [2024-06-03 20:04:09,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083091041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:09,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:09,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:09,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921510659] [2024-06-03 20:04:09,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:09,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:09,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:09,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:09,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:09,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:09,416 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) [2024-06-03 20:04:09,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:09,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:09,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:09,888 INFO L124 PetriNetUnfolderBase]: 840/1490 cut-off events. [2024-06-03 20:04:09,888 INFO L125 PetriNetUnfolderBase]: For 223400/223400 co-relation queries the response was YES. [2024-06-03 20:04:09,898 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. [2024-06-03 20:04:09,902 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 296 selfloop transitions, 15 changer transitions 0/313 dead transitions. [2024-06-03 20:04:09,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 313 transitions, 3599 flow [2024-06-03 20:04:09,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 20:04:09,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-03 20:04:09,903 INFO L175 Difference]: Start difference. First operand has 337 places, 300 transitions, 2931 flow. Second operand 10 states and 106 transitions. [2024-06-03 20:04:09,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 313 transitions, 3599 flow [2024-06-03 20:04:10,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 313 transitions, 3473 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:10,503 INFO L231 Difference]: Finished difference. Result has 338 places, 301 transitions, 2861 flow [2024-06-03 20:04:10,503 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} [2024-06-03 20:04:10,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-03 20:04:10,503 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 301 transitions, 2861 flow [2024-06-03 20:04:10,504 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) [2024-06-03 20:04:10,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:10,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:10,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 20:04:10,504 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)] === [2024-06-03 20:04:10,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:10,504 INFO L85 PathProgramCache]: Analyzing trace with hash 324838588, now seen corresponding path program 9 times [2024-06-03 20:04:10,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:10,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649602535] [2024-06-03 20:04:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:10,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:12,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:12,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649602535] [2024-06-03 20:04:12,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649602535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:12,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:12,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:12,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724349505] [2024-06-03 20:04:12,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:12,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:12,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:12,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:12,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:12,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:12,490 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) [2024-06-03 20:04:12,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:12,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:12,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:13,091 INFO L124 PetriNetUnfolderBase]: 844/1498 cut-off events. [2024-06-03 20:04:13,092 INFO L125 PetriNetUnfolderBase]: For 227655/227655 co-relation queries the response was YES. [2024-06-03 20:04:13,102 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. [2024-06-03 20:04:13,106 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 25 changer transitions 0/316 dead transitions. [2024-06-03 20:04:13,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 316 transitions, 3549 flow [2024-06-03 20:04:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 20:04:13,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-03 20:04:13,107 INFO L175 Difference]: Start difference. First operand has 338 places, 301 transitions, 2861 flow. Second operand 10 states and 116 transitions. [2024-06-03 20:04:13,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 316 transitions, 3549 flow [2024-06-03 20:04:13,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 316 transitions, 3503 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 20:04:13,779 INFO L231 Difference]: Finished difference. Result has 340 places, 302 transitions, 2893 flow [2024-06-03 20:04:13,779 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} [2024-06-03 20:04:13,779 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-03 20:04:13,779 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 302 transitions, 2893 flow [2024-06-03 20:04:13,779 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) [2024-06-03 20:04:13,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:13,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:13,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 20:04:13,779 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)] === [2024-06-03 20:04:13,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2030963252, now seen corresponding path program 10 times [2024-06-03 20:04:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:13,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027361761] [2024-06-03 20:04:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:15,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:15,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027361761] [2024-06-03 20:04:15,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027361761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:15,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:15,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:15,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885870525] [2024-06-03 20:04:15,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:15,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:15,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:15,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:15,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:15,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:15,186 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) [2024-06-03 20:04:15,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:15,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:15,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:15,690 INFO L124 PetriNetUnfolderBase]: 848/1506 cut-off events. [2024-06-03 20:04:15,690 INFO L125 PetriNetUnfolderBase]: For 231995/231995 co-relation queries the response was YES. [2024-06-03 20:04:15,701 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. [2024-06-03 20:04:15,705 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 294 selfloop transitions, 19 changer transitions 0/315 dead transitions. [2024-06-03 20:04:15,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 315 transitions, 3573 flow [2024-06-03 20:04:15,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:15,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 20:04:15,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-03 20:04:15,705 INFO L175 Difference]: Start difference. First operand has 340 places, 302 transitions, 2893 flow. Second operand 10 states and 109 transitions. [2024-06-03 20:04:15,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 315 transitions, 3573 flow [2024-06-03 20:04:16,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 315 transitions, 3505 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 20:04:16,365 INFO L231 Difference]: Finished difference. Result has 342 places, 303 transitions, 2893 flow [2024-06-03 20:04:16,365 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} [2024-06-03 20:04:16,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-03 20:04:16,366 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 303 transitions, 2893 flow [2024-06-03 20:04:16,366 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) [2024-06-03 20:04:16,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:16,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:16,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 20:04:16,366 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)] === [2024-06-03 20:04:16,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:16,366 INFO L85 PathProgramCache]: Analyzing trace with hash 324830652, now seen corresponding path program 13 times [2024-06-03 20:04:16,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:16,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749566359] [2024-06-03 20:04:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:16,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:17,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:17,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749566359] [2024-06-03 20:04:17,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749566359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:17,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:17,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434809097] [2024-06-03 20:04:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:17,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:17,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:17,955 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) [2024-06-03 20:04:17,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:17,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:17,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:18,597 INFO L124 PetriNetUnfolderBase]: 854/1516 cut-off events. [2024-06-03 20:04:18,597 INFO L125 PetriNetUnfolderBase]: For 235896/235896 co-relation queries the response was YES. [2024-06-03 20:04:18,608 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. [2024-06-03 20:04:18,612 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 290 selfloop transitions, 29 changer transitions 0/321 dead transitions. [2024-06-03 20:04:18,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 321 transitions, 3601 flow [2024-06-03 20:04:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:04:18,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:04:18,613 INFO L175 Difference]: Start difference. First operand has 342 places, 303 transitions, 2893 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:04:18,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 321 transitions, 3601 flow [2024-06-03 20:04:19,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 321 transitions, 3543 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-03 20:04:19,266 INFO L231 Difference]: Finished difference. Result has 345 places, 305 transitions, 2926 flow [2024-06-03 20:04:19,266 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} [2024-06-03 20:04:19,266 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-03 20:04:19,267 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 305 transitions, 2926 flow [2024-06-03 20:04:19,267 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) [2024-06-03 20:04:19,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:19,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:19,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 20:04:19,267 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)] === [2024-06-03 20:04:19,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2030694482, now seen corresponding path program 11 times [2024-06-03 20:04:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:19,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840126795] [2024-06-03 20:04:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:19,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:20,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:20,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840126795] [2024-06-03 20:04:20,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840126795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:20,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:20,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:20,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403720007] [2024-06-03 20:04:20,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:20,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:20,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:20,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:20,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:20,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:20,692 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) [2024-06-03 20:04:20,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:20,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:20,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:21,232 INFO L124 PetriNetUnfolderBase]: 858/1524 cut-off events. [2024-06-03 20:04:21,233 INFO L125 PetriNetUnfolderBase]: For 240219/240219 co-relation queries the response was YES. [2024-06-03 20:04:21,242 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. [2024-06-03 20:04:21,246 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 298 selfloop transitions, 18 changer transitions 0/318 dead transitions. [2024-06-03 20:04:21,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 318 transitions, 3612 flow [2024-06-03 20:04:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:21,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:21,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 20:04:21,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 20:04:21,247 INFO L175 Difference]: Start difference. First operand has 345 places, 305 transitions, 2926 flow. Second operand 10 states and 108 transitions. [2024-06-03 20:04:21,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 318 transitions, 3612 flow [2024-06-03 20:04:21,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 318 transitions, 3541 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:21,877 INFO L231 Difference]: Finished difference. Result has 346 places, 306 transitions, 2923 flow [2024-06-03 20:04:21,877 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} [2024-06-03 20:04:21,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-03 20:04:21,878 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 306 transitions, 2923 flow [2024-06-03 20:04:21,878 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) [2024-06-03 20:04:21,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:21,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 20:04:21,878 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)] === [2024-06-03 20:04:21,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash 125327052, now seen corresponding path program 14 times [2024-06-03 20:04:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:21,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022343012] [2024-06-03 20:04:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:21,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022343012] [2024-06-03 20:04:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022343012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:23,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292321639] [2024-06-03 20:04:23,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:23,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:23,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:23,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:23,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:23,385 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) [2024-06-03 20:04:23,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:23,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:23,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:23,925 INFO L124 PetriNetUnfolderBase]: 854/1518 cut-off events. [2024-06-03 20:04:23,925 INFO L125 PetriNetUnfolderBase]: For 232011/232011 co-relation queries the response was YES. [2024-06-03 20:04:23,936 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. [2024-06-03 20:04:23,940 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 52 changer transitions 0/321 dead transitions. [2024-06-03 20:04:23,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 321 transitions, 3603 flow [2024-06-03 20:04:23,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 20:04:23,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 20:04:23,941 INFO L175 Difference]: Start difference. First operand has 346 places, 306 transitions, 2923 flow. Second operand 11 states and 127 transitions. [2024-06-03 20:04:23,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 321 transitions, 3603 flow [2024-06-03 20:04:24,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 321 transitions, 3535 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 20:04:24,565 INFO L231 Difference]: Finished difference. Result has 349 places, 306 transitions, 2964 flow [2024-06-03 20:04:24,566 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} [2024-06-03 20:04:24,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-03 20:04:24,566 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 306 transitions, 2964 flow [2024-06-03 20:04:24,566 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) [2024-06-03 20:04:24,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:24,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:24,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 20:04:24,566 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)] === [2024-06-03 20:04:24,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash -107478879, now seen corresponding path program 16 times [2024-06-03 20:04:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:24,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962072493] [2024-06-03 20:04:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:24,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:25,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:25,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962072493] [2024-06-03 20:04:25,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962072493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:25,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:25,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:25,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439032627] [2024-06-03 20:04:25,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:25,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:25,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:25,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:25,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:25,901 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) [2024-06-03 20:04:25,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:25,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:25,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:26,530 INFO L124 PetriNetUnfolderBase]: 874/1562 cut-off events. [2024-06-03 20:04:26,530 INFO L125 PetriNetUnfolderBase]: For 300386/300386 co-relation queries the response was YES. [2024-06-03 20:04:26,541 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. [2024-06-03 20:04:26,545 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 21 changer transitions 6/326 dead transitions. [2024-06-03 20:04:26,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 326 transitions, 3703 flow [2024-06-03 20:04:26,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:26,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 20:04:26,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 20:04:26,546 INFO L175 Difference]: Start difference. First operand has 349 places, 306 transitions, 2964 flow. Second operand 11 states and 127 transitions. [2024-06-03 20:04:26,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 326 transitions, 3703 flow [2024-06-03 20:04:27,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 326 transitions, 3601 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:27,177 INFO L231 Difference]: Finished difference. Result has 351 places, 306 transitions, 2920 flow [2024-06-03 20:04:27,177 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} [2024-06-03 20:04:27,178 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-03 20:04:27,178 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 306 transitions, 2920 flow [2024-06-03 20:04:27,178 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) [2024-06-03 20:04:27,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:27,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:27,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 20:04:27,178 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)] === [2024-06-03 20:04:27,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash -200274907, now seen corresponding path program 17 times [2024-06-03 20:04:27,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:27,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763197786] [2024-06-03 20:04:27,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:27,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:28,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:28,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763197786] [2024-06-03 20:04:28,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763197786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:28,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:28,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:28,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414069040] [2024-06-03 20:04:28,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:28,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:28,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:28,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:28,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:28,985 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) [2024-06-03 20:04:28,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:28,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:28,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:29,498 INFO L124 PetriNetUnfolderBase]: 872/1560 cut-off events. [2024-06-03 20:04:29,498 INFO L125 PetriNetUnfolderBase]: For 240228/240228 co-relation queries the response was YES. [2024-06-03 20:04:29,509 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. [2024-06-03 20:04:29,513 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 280 selfloop transitions, 39 changer transitions 0/321 dead transitions. [2024-06-03 20:04:29,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 321 transitions, 3615 flow [2024-06-03 20:04:29,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:29,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 20:04:29,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 20:04:29,514 INFO L175 Difference]: Start difference. First operand has 351 places, 306 transitions, 2920 flow. Second operand 11 states and 125 transitions. [2024-06-03 20:04:29,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 321 transitions, 3615 flow [2024-06-03 20:04:30,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 321 transitions, 3559 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:30,116 INFO L231 Difference]: Finished difference. Result has 353 places, 307 transitions, 2969 flow [2024-06-03 20:04:30,117 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} [2024-06-03 20:04:30,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-03 20:04:30,117 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 307 transitions, 2969 flow [2024-06-03 20:04:30,117 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) [2024-06-03 20:04:30,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:30,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:30,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 20:04:30,117 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)] === [2024-06-03 20:04:30,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:30,117 INFO L85 PathProgramCache]: Analyzing trace with hash 130891242, now seen corresponding path program 15 times [2024-06-03 20:04:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:30,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326436436] [2024-06-03 20:04:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:31,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326436436] [2024-06-03 20:04:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326436436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:31,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:31,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:31,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146520757] [2024-06-03 20:04:31,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:31,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:31,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:31,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:31,951 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) [2024-06-03 20:04:31,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:31,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:31,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:32,706 INFO L124 PetriNetUnfolderBase]: 868/1554 cut-off events. [2024-06-03 20:04:32,706 INFO L125 PetriNetUnfolderBase]: For 231019/231019 co-relation queries the response was YES. [2024-06-03 20:04:32,718 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. [2024-06-03 20:04:32,722 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 49 changer transitions 0/322 dead transitions. [2024-06-03 20:04:32,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 322 transitions, 3651 flow [2024-06-03 20:04:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:04:32,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:04:32,723 INFO L175 Difference]: Start difference. First operand has 353 places, 307 transitions, 2969 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:04:32,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 322 transitions, 3651 flow [2024-06-03 20:04:33,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 322 transitions, 3542 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:33,363 INFO L231 Difference]: Finished difference. Result has 355 places, 307 transitions, 2963 flow [2024-06-03 20:04:33,364 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} [2024-06-03 20:04:33,364 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-03 20:04:33,364 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 307 transitions, 2963 flow [2024-06-03 20:04:33,364 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) [2024-06-03 20:04:33,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:33,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:33,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 20:04:33,364 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)] === [2024-06-03 20:04:33,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:33,364 INFO L85 PathProgramCache]: Analyzing trace with hash 324623107, now seen corresponding path program 18 times [2024-06-03 20:04:33,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:33,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968392493] [2024-06-03 20:04:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:33,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:34,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:34,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968392493] [2024-06-03 20:04:34,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968392493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:34,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:34,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:34,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671869445] [2024-06-03 20:04:34,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:34,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:34,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:34,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:34,849 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) [2024-06-03 20:04:34,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:34,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:34,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:35,405 INFO L124 PetriNetUnfolderBase]: 871/1567 cut-off events. [2024-06-03 20:04:35,406 INFO L125 PetriNetUnfolderBase]: For 288983/288983 co-relation queries the response was YES. [2024-06-03 20:04:35,417 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. [2024-06-03 20:04:35,421 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 294 selfloop transitions, 24 changer transitions 9/329 dead transitions. [2024-06-03 20:04:35,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 329 transitions, 3748 flow [2024-06-03 20:04:35,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 20:04:35,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:04:35,422 INFO L175 Difference]: Start difference. First operand has 355 places, 307 transitions, 2963 flow. Second operand 11 states and 132 transitions. [2024-06-03 20:04:35,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 329 transitions, 3748 flow [2024-06-03 20:04:35,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 329 transitions, 3632 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 20:04:35,958 INFO L231 Difference]: Finished difference. Result has 356 places, 306 transitions, 2899 flow [2024-06-03 20:04:35,958 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} [2024-06-03 20:04:35,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-03 20:04:35,958 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 306 transitions, 2899 flow [2024-06-03 20:04:35,959 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) [2024-06-03 20:04:35,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:35,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:35,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 20:04:35,959 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)] === [2024-06-03 20:04:35,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:35,960 INFO L85 PathProgramCache]: Analyzing trace with hash 130683697, now seen corresponding path program 19 times [2024-06-03 20:04:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:35,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869130744] [2024-06-03 20:04:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:35,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:37,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:37,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869130744] [2024-06-03 20:04:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869130744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:37,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:37,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:37,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747347117] [2024-06-03 20:04:37,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:37,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:37,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:37,575 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) [2024-06-03 20:04:37,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:37,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:37,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:38,129 INFO L124 PetriNetUnfolderBase]: 854/1532 cut-off events. [2024-06-03 20:04:38,129 INFO L125 PetriNetUnfolderBase]: For 155981/155981 co-relation queries the response was YES. [2024-06-03 20:04:38,141 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. [2024-06-03 20:04:38,145 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 279 selfloop transitions, 42 changer transitions 0/323 dead transitions. [2024-06-03 20:04:38,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 323 transitions, 3593 flow [2024-06-03 20:04:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 20:04:38,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 20:04:38,146 INFO L175 Difference]: Start difference. First operand has 356 places, 306 transitions, 2899 flow. Second operand 11 states and 125 transitions. [2024-06-03 20:04:38,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 323 transitions, 3593 flow [2024-06-03 20:04:38,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 323 transitions, 3513 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:38,683 INFO L231 Difference]: Finished difference. Result has 359 places, 309 transitions, 2948 flow [2024-06-03 20:04:38,683 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} [2024-06-03 20:04:38,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-03 20:04:38,683 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 309 transitions, 2948 flow [2024-06-03 20:04:38,683 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) [2024-06-03 20:04:38,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:38,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:38,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 20:04:38,684 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)] === [2024-06-03 20:04:38,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:38,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1621968312, now seen corresponding path program 16 times [2024-06-03 20:04:38,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:38,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208546317] [2024-06-03 20:04:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:38,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:40,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:40,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208546317] [2024-06-03 20:04:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208546317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:40,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:40,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:40,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808553743] [2024-06-03 20:04:40,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:40,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:40,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:40,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:40,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:40,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:40,307 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) [2024-06-03 20:04:40,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:40,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:40,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:40,916 INFO L124 PetriNetUnfolderBase]: 850/1526 cut-off events. [2024-06-03 20:04:40,916 INFO L125 PetriNetUnfolderBase]: For 144127/144127 co-relation queries the response was YES. [2024-06-03 20:04:40,927 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. [2024-06-03 20:04:40,931 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 295 selfloop transitions, 28 changer transitions 0/325 dead transitions. [2024-06-03 20:04:40,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 325 transitions, 3640 flow [2024-06-03 20:04:40,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:04:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:04:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 20:04:40,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 20:04:40,933 INFO L175 Difference]: Start difference. First operand has 359 places, 309 transitions, 2948 flow. Second operand 11 states and 127 transitions. [2024-06-03 20:04:40,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 325 transitions, 3640 flow [2024-06-03 20:04:41,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 325 transitions, 3527 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-03 20:04:41,407 INFO L231 Difference]: Finished difference. Result has 359 places, 309 transitions, 2896 flow [2024-06-03 20:04:41,407 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} [2024-06-03 20:04:41,407 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-03 20:04:41,407 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 309 transitions, 2896 flow [2024-06-03 20:04:41,407 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) [2024-06-03 20:04:41,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:41,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 20:04:41,408 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)] === [2024-06-03 20:04:41,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:41,408 INFO L85 PathProgramCache]: Analyzing trace with hash 332247898, now seen corresponding path program 12 times [2024-06-03 20:04:41,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:41,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133132584] [2024-06-03 20:04:41,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:41,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133132584] [2024-06-03 20:04:42,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133132584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:42,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:42,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:42,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657432947] [2024-06-03 20:04:42,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:42,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:42,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:42,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:42,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:42,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:42,898 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) [2024-06-03 20:04:42,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:42,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:42,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:43,435 INFO L124 PetriNetUnfolderBase]: 854/1534 cut-off events. [2024-06-03 20:04:43,435 INFO L125 PetriNetUnfolderBase]: For 142068/142068 co-relation queries the response was YES. [2024-06-03 20:04:43,448 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. [2024-06-03 20:04:43,451 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 302 selfloop transitions, 19 changer transitions 1/324 dead transitions. [2024-06-03 20:04:43,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 324 transitions, 3615 flow [2024-06-03 20:04:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-03 20:04:43,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-03 20:04:43,452 INFO L175 Difference]: Start difference. First operand has 359 places, 309 transitions, 2896 flow. Second operand 10 states and 112 transitions. [2024-06-03 20:04:43,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 324 transitions, 3615 flow [2024-06-03 20:04:43,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 324 transitions, 3509 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 20:04:43,914 INFO L231 Difference]: Finished difference. Result has 359 places, 310 transitions, 2870 flow [2024-06-03 20:04:43,914 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} [2024-06-03 20:04:43,914 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-03 20:04:43,914 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 310 transitions, 2870 flow [2024-06-03 20:04:43,914 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) [2024-06-03 20:04:43,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:43,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:43,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 20:04:43,915 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)] === [2024-06-03 20:04:43,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2015842666, now seen corresponding path program 13 times [2024-06-03 20:04:43,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:43,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804769851] [2024-06-03 20:04:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:43,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:45,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:45,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804769851] [2024-06-03 20:04:45,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804769851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:45,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:45,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:45,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273637585] [2024-06-03 20:04:45,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:45,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:45,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:45,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:45,294 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) [2024-06-03 20:04:45,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:45,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:45,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:45,805 INFO L124 PetriNetUnfolderBase]: 834/1494 cut-off events. [2024-06-03 20:04:45,805 INFO L125 PetriNetUnfolderBase]: For 144501/144501 co-relation queries the response was YES. [2024-06-03 20:04:45,815 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. [2024-06-03 20:04:45,819 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 306 selfloop transitions, 16 changer transitions 0/324 dead transitions. [2024-06-03 20:04:45,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 324 transitions, 3584 flow [2024-06-03 20:04:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 20:04:45,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-03 20:04:45,819 INFO L175 Difference]: Start difference. First operand has 359 places, 310 transitions, 2870 flow. Second operand 10 states and 108 transitions. [2024-06-03 20:04:45,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 324 transitions, 3584 flow [2024-06-03 20:04:46,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 324 transitions, 3522 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 20:04:46,262 INFO L231 Difference]: Finished difference. Result has 363 places, 312 transitions, 2891 flow [2024-06-03 20:04:46,262 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} [2024-06-03 20:04:46,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-03 20:04:46,263 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 312 transitions, 2891 flow [2024-06-03 20:04:46,263 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) [2024-06-03 20:04:46,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:46,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:46,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 20:04:46,263 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)] === [2024-06-03 20:04:46,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:46,263 INFO L85 PathProgramCache]: Analyzing trace with hash 332257198, now seen corresponding path program 14 times [2024-06-03 20:04:46,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:46,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486283790] [2024-06-03 20:04:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:47,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486283790] [2024-06-03 20:04:47,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486283790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:47,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:47,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:47,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949916856] [2024-06-03 20:04:47,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:47,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:47,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:47,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:47,661 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) [2024-06-03 20:04:47,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:47,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:47,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:48,205 INFO L124 PetriNetUnfolderBase]: 838/1502 cut-off events. [2024-06-03 20:04:48,205 INFO L125 PetriNetUnfolderBase]: For 146916/146916 co-relation queries the response was YES. [2024-06-03 20:04:48,215 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. [2024-06-03 20:04:48,218 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 305 selfloop transitions, 19 changer transitions 0/326 dead transitions. [2024-06-03 20:04:48,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 326 transitions, 3603 flow [2024-06-03 20:04:48,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 20:04:48,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 20:04:48,219 INFO L175 Difference]: Start difference. First operand has 363 places, 312 transitions, 2891 flow. Second operand 10 states and 111 transitions. [2024-06-03 20:04:48,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 326 transitions, 3603 flow [2024-06-03 20:04:48,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 326 transitions, 3548 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-03 20:04:48,681 INFO L231 Difference]: Finished difference. Result has 366 places, 313 transitions, 2912 flow [2024-06-03 20:04:48,681 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} [2024-06-03 20:04:48,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-03 20:04:48,681 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 313 transitions, 2912 flow [2024-06-03 20:04:48,681 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) [2024-06-03 20:04:48,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:48,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:48,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 20:04:48,682 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)] === [2024-06-03 20:04:48,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:48,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2016111436, now seen corresponding path program 15 times [2024-06-03 20:04:48,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:48,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47556868] [2024-06-03 20:04:48,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:48,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:49,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47556868] [2024-06-03 20:04:49,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47556868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:49,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:49,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:49,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791935334] [2024-06-03 20:04:49,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:49,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:49,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:49,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:50,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:50,036 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) [2024-06-03 20:04:50,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:50,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:50,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:50,516 INFO L124 PetriNetUnfolderBase]: 835/1497 cut-off events. [2024-06-03 20:04:50,516 INFO L125 PetriNetUnfolderBase]: For 134470/134470 co-relation queries the response was YES. [2024-06-03 20:04:50,527 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. [2024-06-03 20:04:50,530 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 308 selfloop transitions, 15 changer transitions 0/325 dead transitions. [2024-06-03 20:04:50,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 325 transitions, 3586 flow [2024-06-03 20:04:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 20:04:50,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-03 20:04:50,532 INFO L175 Difference]: Start difference. First operand has 366 places, 313 transitions, 2912 flow. Second operand 10 states and 107 transitions. [2024-06-03 20:04:50,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 325 transitions, 3586 flow [2024-06-03 20:04:51,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 325 transitions, 3520 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 20:04:51,053 INFO L231 Difference]: Finished difference. Result has 368 places, 313 transitions, 2880 flow [2024-06-03 20:04:51,054 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} [2024-06-03 20:04:51,054 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-03 20:04:51,054 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 313 transitions, 2880 flow [2024-06-03 20:04:51,055 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) [2024-06-03 20:04:51,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:51,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:51,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 20:04:51,055 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)] === [2024-06-03 20:04:51,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:51,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2030971188, now seen corresponding path program 17 times [2024-06-03 20:04:51,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:51,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035033866] [2024-06-03 20:04:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:51,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:52,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:52,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035033866] [2024-06-03 20:04:52,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035033866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:52,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:52,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 20:04:52,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906917201] [2024-06-03 20:04:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:52,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 20:04:52,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 20:04:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 20:04:52,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:52,148 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) [2024-06-03 20:04:52,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:52,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:52,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:52,650 INFO L124 PetriNetUnfolderBase]: 831/1491 cut-off events. [2024-06-03 20:04:52,651 INFO L125 PetriNetUnfolderBase]: For 121375/121375 co-relation queries the response was YES. [2024-06-03 20:04:52,661 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. [2024-06-03 20:04:52,664 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 302 selfloop transitions, 23 changer transitions 0/327 dead transitions. [2024-06-03 20:04:52,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 327 transitions, 3586 flow [2024-06-03 20:04:52,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:04:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:04:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 20:04:52,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-03 20:04:52,665 INFO L175 Difference]: Start difference. First operand has 368 places, 313 transitions, 2880 flow. Second operand 10 states and 111 transitions. [2024-06-03 20:04:52,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 327 transitions, 3586 flow [2024-06-03 20:04:53,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 327 transitions, 3472 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:53,096 INFO L231 Difference]: Finished difference. Result has 369 places, 315 transitions, 2847 flow [2024-06-03 20:04:53,096 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} [2024-06-03 20:04:53,096 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-03 20:04:53,096 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 315 transitions, 2847 flow [2024-06-03 20:04:53,096 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) [2024-06-03 20:04:53,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:53,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:53,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 20:04:53,097 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)] === [2024-06-03 20:04:53,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2136345336, now seen corresponding path program 18 times [2024-06-03 20:04:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:53,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120075490] [2024-06-03 20:04:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120075490] [2024-06-03 20:04:54,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120075490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:54,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:54,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:04:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677227942] [2024-06-03 20:04:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:54,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:04:54,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:54,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:04:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:04:54,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:54,653 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) [2024-06-03 20:04:54,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:54,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:54,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:55,414 INFO L124 PetriNetUnfolderBase]: 827/1485 cut-off events. [2024-06-03 20:04:55,414 INFO L125 PetriNetUnfolderBase]: For 107590/107590 co-relation queries the response was YES. [2024-06-03 20:04:55,425 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. [2024-06-03 20:04:55,429 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 297 selfloop transitions, 40 changer transitions 0/339 dead transitions. [2024-06-03 20:04:55,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 339 transitions, 3607 flow [2024-06-03 20:04:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:04:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:04:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-03 20:04:55,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-03 20:04:55,430 INFO L175 Difference]: Start difference. First operand has 369 places, 315 transitions, 2847 flow. Second operand 12 states and 143 transitions. [2024-06-03 20:04:55,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 339 transitions, 3607 flow [2024-06-03 20:04:55,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 339 transitions, 3500 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-03 20:04:55,785 INFO L231 Difference]: Finished difference. Result has 373 places, 317 transitions, 2860 flow [2024-06-03 20:04:55,785 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} [2024-06-03 20:04:55,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-03 20:04:55,785 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 317 transitions, 2860 flow [2024-06-03 20:04:55,785 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) [2024-06-03 20:04:55,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:55,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:55,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-03 20:04:55,786 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)] === [2024-06-03 20:04:55,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash 857051683, now seen corresponding path program 1 times [2024-06-03 20:04:55,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:55,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635050299] [2024-06-03 20:04:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:55,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:04:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:04:57,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:04:57,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635050299] [2024-06-03 20:04:57,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635050299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:04:57,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:04:57,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:04:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772822522] [2024-06-03 20:04:57,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:04:57,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:04:57,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:04:57,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:04:57,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:04:57,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:04:57,554 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) [2024-06-03 20:04:57,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:04:57,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:04:57,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:04:58,256 INFO L124 PetriNetUnfolderBase]: 868/1572 cut-off events. [2024-06-03 20:04:58,256 INFO L125 PetriNetUnfolderBase]: For 228990/228990 co-relation queries the response was YES. [2024-06-03 20:04:58,268 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. [2024-06-03 20:04:58,271 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 310 selfloop transitions, 26 changer transitions 16/354 dead transitions. [2024-06-03 20:04:58,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 354 transitions, 3952 flow [2024-06-03 20:04:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 20:04:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 20:04:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-03 20:04:58,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-03 20:04:58,272 INFO L175 Difference]: Start difference. First operand has 373 places, 317 transitions, 2860 flow. Second operand 13 states and 160 transitions. [2024-06-03 20:04:58,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 354 transitions, 3952 flow [2024-06-03 20:04:58,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 354 transitions, 3701 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-06-03 20:04:58,932 INFO L231 Difference]: Finished difference. Result has 373 places, 313 transitions, 2642 flow [2024-06-03 20:04:58,932 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} [2024-06-03 20:04:58,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-03 20:04:58,932 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 313 transitions, 2642 flow [2024-06-03 20:04:58,932 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) [2024-06-03 20:04:58,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:04:58,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:04:58,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-03 20:04:58,933 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)] === [2024-06-03 20:04:58,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:04:58,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2118129635, now seen corresponding path program 2 times [2024-06-03 20:04:58,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:04:58,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060839207] [2024-06-03 20:04:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:04:58,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:04:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:00,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:00,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060839207] [2024-06-03 20:05:00,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060839207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:00,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:00,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:00,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733212064] [2024-06-03 20:05:00,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:00,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:00,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:00,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:00,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:01,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:01,105 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) [2024-06-03 20:05:01,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:01,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:01,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:01,823 INFO L124 PetriNetUnfolderBase]: 870/1580 cut-off events. [2024-06-03 20:05:01,823 INFO L125 PetriNetUnfolderBase]: For 295488/295488 co-relation queries the response was YES. [2024-06-03 20:05:01,835 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. [2024-06-03 20:05:01,840 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 305 selfloop transitions, 21 changer transitions 13/341 dead transitions. [2024-06-03 20:05:01,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 341 transitions, 3708 flow [2024-06-03 20:05:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:01,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 20:05:01,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 20:05:01,841 INFO L175 Difference]: Start difference. First operand has 373 places, 313 transitions, 2642 flow. Second operand 11 states and 133 transitions. [2024-06-03 20:05:01,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 341 transitions, 3708 flow [2024-06-03 20:05:02,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 341 transitions, 3643 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-03 20:05:02,532 INFO L231 Difference]: Finished difference. Result has 366 places, 307 transitions, 2590 flow [2024-06-03 20:05:02,532 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} [2024-06-03 20:05:02,532 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-03 20:05:02,533 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 307 transitions, 2590 flow [2024-06-03 20:05:02,533 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) [2024-06-03 20:05:02,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:02,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:02,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-03 20:05:02,533 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)] === [2024-06-03 20:05:02,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1045529527, now seen corresponding path program 3 times [2024-06-03 20:05:02,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:02,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552535941] [2024-06-03 20:05:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:02,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:03,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:03,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552535941] [2024-06-03 20:05:03,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552535941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:03,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:03,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:03,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879693014] [2024-06-03 20:05:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:03,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:03,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:04,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:04,045 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) [2024-06-03 20:05:04,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:04,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:04,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:04,844 INFO L124 PetriNetUnfolderBase]: 851/1547 cut-off events. [2024-06-03 20:05:04,844 INFO L125 PetriNetUnfolderBase]: For 296412/296412 co-relation queries the response was YES. [2024-06-03 20:05:04,855 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. [2024-06-03 20:05:04,859 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 298 selfloop transitions, 28 changer transitions 10/338 dead transitions. [2024-06-03 20:05:04,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 338 transitions, 3400 flow [2024-06-03 20:05:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-03 20:05:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-03 20:05:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 165 transitions. [2024-06-03 20:05:04,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:05:04,860 INFO L175 Difference]: Start difference. First operand has 366 places, 307 transitions, 2590 flow. Second operand 15 states and 165 transitions. [2024-06-03 20:05:04,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 338 transitions, 3400 flow [2024-06-03 20:05:05,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 338 transitions, 3351 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-03 20:05:05,420 INFO L231 Difference]: Finished difference. Result has 362 places, 304 transitions, 2599 flow [2024-06-03 20:05:05,420 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} [2024-06-03 20:05:05,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-03 20:05:05,420 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 304 transitions, 2599 flow [2024-06-03 20:05:05,420 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) [2024-06-03 20:05:05,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:05,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:05,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-03 20:05:05,420 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)] === [2024-06-03 20:05:05,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:05,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1045524877, now seen corresponding path program 4 times [2024-06-03 20:05:05,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:05,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427637898] [2024-06-03 20:05:05,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:05,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:06,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:06,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:06,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427637898] [2024-06-03 20:05:06,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427637898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:06,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:06,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:06,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678499568] [2024-06-03 20:05:06,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:06,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:06,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:06,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:06,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:06,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:06,911 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) [2024-06-03 20:05:06,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:06,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:06,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:07,612 INFO L124 PetriNetUnfolderBase]: 837/1525 cut-off events. [2024-06-03 20:05:07,612 INFO L125 PetriNetUnfolderBase]: For 248161/248161 co-relation queries the response was YES. [2024-06-03 20:05:07,621 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. [2024-06-03 20:05:07,625 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 297 selfloop transitions, 18 changer transitions 20/337 dead transitions. [2024-06-03 20:05:07,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 337 transitions, 3631 flow [2024-06-03 20:05:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-03 20:05:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-03 20:05:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 159 transitions. [2024-06-03 20:05:07,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3549107142857143 [2024-06-03 20:05:07,626 INFO L175 Difference]: Start difference. First operand has 362 places, 304 transitions, 2599 flow. Second operand 14 states and 159 transitions. [2024-06-03 20:05:07,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 337 transitions, 3631 flow [2024-06-03 20:05:08,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 337 transitions, 3542 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-03 20:05:08,244 INFO L231 Difference]: Finished difference. Result has 362 places, 294 transitions, 2474 flow [2024-06-03 20:05:08,244 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} [2024-06-03 20:05:08,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-03 20:05:08,244 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 294 transitions, 2474 flow [2024-06-03 20:05:08,244 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) [2024-06-03 20:05:08,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:08,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:08,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-03 20:05:08,245 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)] === [2024-06-03 20:05:08,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:08,245 INFO L85 PathProgramCache]: Analyzing trace with hash -557350029, now seen corresponding path program 5 times [2024-06-03 20:05:08,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:08,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309470698] [2024-06-03 20:05:08,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:08,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:08,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309470698] [2024-06-03 20:05:10,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309470698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:10,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:10,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279861047] [2024-06-03 20:05:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:10,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:10,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:10,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:10,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:10,484 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) [2024-06-03 20:05:10,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:10,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:10,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:11,164 INFO L124 PetriNetUnfolderBase]: 783/1418 cut-off events. [2024-06-03 20:05:11,164 INFO L125 PetriNetUnfolderBase]: For 198474/198474 co-relation queries the response was YES. [2024-06-03 20:05:11,174 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. [2024-06-03 20:05:11,178 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 11 changer transitions 25/317 dead transitions. [2024-06-03 20:05:11,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 317 transitions, 3188 flow [2024-06-03 20:05:11,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 20:05:11,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:05:11,179 INFO L175 Difference]: Start difference. First operand has 362 places, 294 transitions, 2474 flow. Second operand 12 states and 132 transitions. [2024-06-03 20:05:11,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 317 transitions, 3188 flow [2024-06-03 20:05:11,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 317 transitions, 3146 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-03 20:05:11,516 INFO L231 Difference]: Finished difference. Result has 351 places, 285 transitions, 2384 flow [2024-06-03 20:05:11,517 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} [2024-06-03 20:05:11,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-03 20:05:11,517 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 285 transitions, 2384 flow [2024-06-03 20:05:11,517 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) [2024-06-03 20:05:11,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:11,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:11,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-03 20:05:11,517 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:05:11,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:11,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1265444631, now seen corresponding path program 1 times [2024-06-03 20:05:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:11,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099395570] [2024-06-03 20:05:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:12,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:12,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099395570] [2024-06-03 20:05:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099395570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:12,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:12,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:12,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049806061] [2024-06-03 20:05:12,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:12,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:12,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:12,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:12,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:12,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:12,924 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) [2024-06-03 20:05:12,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:12,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:12,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:13,350 INFO L124 PetriNetUnfolderBase]: 755/1361 cut-off events. [2024-06-03 20:05:13,351 INFO L125 PetriNetUnfolderBase]: For 168349/168349 co-relation queries the response was YES. [2024-06-03 20:05:13,359 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. [2024-06-03 20:05:13,362 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 125 changer transitions 7/308 dead transitions. [2024-06-03 20:05:13,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 308 transitions, 3112 flow [2024-06-03 20:05:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-03 20:05:13,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-03 20:05:13,363 INFO L175 Difference]: Start difference. First operand has 351 places, 285 transitions, 2384 flow. Second operand 11 states and 144 transitions. [2024-06-03 20:05:13,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 308 transitions, 3112 flow [2024-06-03 20:05:13,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 308 transitions, 3066 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:13,662 INFO L231 Difference]: Finished difference. Result has 336 places, 283 transitions, 2602 flow [2024-06-03 20:05:13,663 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} [2024-06-03 20:05:13,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-03 20:05:13,663 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 283 transitions, 2602 flow [2024-06-03 20:05:13,663 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) [2024-06-03 20:05:13,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:13,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:13,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-03 20:05:13,664 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)] === [2024-06-03 20:05:13,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:13,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1265451575, now seen corresponding path program 6 times [2024-06-03 20:05:13,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:13,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377148817] [2024-06-03 20:05:13,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:13,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:15,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:15,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377148817] [2024-06-03 20:05:15,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377148817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:15,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:15,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:15,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807626503] [2024-06-03 20:05:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:15,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:15,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:15,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:15,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:15,457 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) [2024-06-03 20:05:15,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:15,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:15,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:16,101 INFO L124 PetriNetUnfolderBase]: 747/1349 cut-off events. [2024-06-03 20:05:16,101 INFO L125 PetriNetUnfolderBase]: For 140970/140970 co-relation queries the response was YES. [2024-06-03 20:05:16,109 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. [2024-06-03 20:05:16,111 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 122 changer transitions 9/307 dead transitions. [2024-06-03 20:05:16,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 307 transitions, 3298 flow [2024-06-03 20:05:16,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-03 20:05:16,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-03 20:05:16,112 INFO L175 Difference]: Start difference. First operand has 336 places, 283 transitions, 2602 flow. Second operand 12 states and 153 transitions. [2024-06-03 20:05:16,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 307 transitions, 3298 flow [2024-06-03 20:05:16,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 307 transitions, 2987 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-03 20:05:16,466 INFO L231 Difference]: Finished difference. Result has 335 places, 280 transitions, 2519 flow [2024-06-03 20:05:16,467 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} [2024-06-03 20:05:16,467 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-03 20:05:16,467 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 280 transitions, 2519 flow [2024-06-03 20:05:16,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:16,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:16,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:16,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-03 20:05:16,467 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)] === [2024-06-03 20:05:16,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:16,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1395894629, now seen corresponding path program 7 times [2024-06-03 20:05:16,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:16,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727915882] [2024-06-03 20:05:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:16,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:17,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:17,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727915882] [2024-06-03 20:05:17,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727915882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:17,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:17,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:17,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163065867] [2024-06-03 20:05:17,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:17,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:17,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:17,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:17,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:17,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:17,892 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) [2024-06-03 20:05:17,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:17,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:17,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:18,472 INFO L124 PetriNetUnfolderBase]: 769/1399 cut-off events. [2024-06-03 20:05:18,472 INFO L125 PetriNetUnfolderBase]: For 207688/207688 co-relation queries the response was YES. [2024-06-03 20:05:18,482 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. [2024-06-03 20:05:18,486 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 89 changer transitions 8/309 dead transitions. [2024-06-03 20:05:18,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 309 transitions, 3501 flow [2024-06-03 20:05:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-03 20:05:18,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 20:05:18,487 INFO L175 Difference]: Start difference. First operand has 335 places, 280 transitions, 2519 flow. Second operand 12 states and 152 transitions. [2024-06-03 20:05:18,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 309 transitions, 3501 flow [2024-06-03 20:05:19,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 309 transitions, 3225 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-03 20:05:19,149 INFO L231 Difference]: Finished difference. Result has 332 places, 277 transitions, 2409 flow [2024-06-03 20:05:19,149 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} [2024-06-03 20:05:19,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-03 20:05:19,149 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 277 transitions, 2409 flow [2024-06-03 20:05:19,149 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) [2024-06-03 20:05:19,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:19,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:19,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-03 20:05:19,150 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)] === [2024-06-03 20:05:19,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1389223305, now seen corresponding path program 2 times [2024-06-03 20:05:19,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:19,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505078091] [2024-06-03 20:05:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:19,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:21,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:21,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505078091] [2024-06-03 20:05:21,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505078091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:21,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:21,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:21,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646037503] [2024-06-03 20:05:21,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:21,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:21,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:21,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:21,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:21,342 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) [2024-06-03 20:05:21,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:21,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:21,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:21,926 INFO L124 PetriNetUnfolderBase]: 747/1353 cut-off events. [2024-06-03 20:05:21,926 INFO L125 PetriNetUnfolderBase]: For 156369/156369 co-relation queries the response was YES. [2024-06-03 20:05:21,934 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. [2024-06-03 20:05:21,937 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 90 changer transitions 0/295 dead transitions. [2024-06-03 20:05:21,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 295 transitions, 3073 flow [2024-06-03 20:05:21,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:21,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:21,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 20:05:21,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 20:05:21,938 INFO L175 Difference]: Start difference. First operand has 332 places, 277 transitions, 2409 flow. Second operand 11 states and 133 transitions. [2024-06-03 20:05:21,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 295 transitions, 3073 flow [2024-06-03 20:05:22,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 295 transitions, 2884 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-03 20:05:22,424 INFO L231 Difference]: Finished difference. Result has 328 places, 278 transitions, 2438 flow [2024-06-03 20:05:22,425 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} [2024-06-03 20:05:22,425 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-03 20:05:22,425 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 278 transitions, 2438 flow [2024-06-03 20:05:22,425 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) [2024-06-03 20:05:22,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:22,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:22,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-03 20:05:22,425 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)] === [2024-06-03 20:05:22,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:22,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1994540619, now seen corresponding path program 3 times [2024-06-03 20:05:22,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:22,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49704303] [2024-06-03 20:05:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:22,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:24,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:24,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49704303] [2024-06-03 20:05:24,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49704303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:24,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:24,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:24,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346623552] [2024-06-03 20:05:24,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:24,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:24,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:24,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:24,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:24,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:24,428 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) [2024-06-03 20:05:24,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:24,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:24,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:25,011 INFO L124 PetriNetUnfolderBase]: 795/1453 cut-off events. [2024-06-03 20:05:25,011 INFO L125 PetriNetUnfolderBase]: For 267740/267740 co-relation queries the response was YES. [2024-06-03 20:05:25,022 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. [2024-06-03 20:05:25,026 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 91 changer transitions 7/306 dead transitions. [2024-06-03 20:05:25,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 306 transitions, 3432 flow [2024-06-03 20:05:25,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:25,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-03 20:05:25,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-03 20:05:25,027 INFO L175 Difference]: Start difference. First operand has 328 places, 278 transitions, 2438 flow. Second operand 12 states and 150 transitions. [2024-06-03 20:05:25,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 306 transitions, 3432 flow [2024-06-03 20:05:25,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 306 transitions, 3224 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-03 20:05:25,788 INFO L231 Difference]: Finished difference. Result has 331 places, 276 transitions, 2403 flow [2024-06-03 20:05:25,788 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} [2024-06-03 20:05:25,788 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-03 20:05:25,788 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 276 transitions, 2403 flow [2024-06-03 20:05:25,789 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) [2024-06-03 20:05:25,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:25,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:25,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-03 20:05:25,789 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)] === [2024-06-03 20:05:25,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1389460889, now seen corresponding path program 8 times [2024-06-03 20:05:25,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:25,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093973693] [2024-06-03 20:05:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:25,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:27,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:27,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093973693] [2024-06-03 20:05:27,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093973693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:27,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:27,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:27,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857850228] [2024-06-03 20:05:27,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:27,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:27,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:27,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:27,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:27,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:27,725 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) [2024-06-03 20:05:27,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:27,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:27,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:28,416 INFO L124 PetriNetUnfolderBase]: 779/1425 cut-off events. [2024-06-03 20:05:28,416 INFO L125 PetriNetUnfolderBase]: For 260395/260395 co-relation queries the response was YES. [2024-06-03 20:05:28,425 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. [2024-06-03 20:05:28,428 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 87 changer transitions 11/299 dead transitions. [2024-06-03 20:05:28,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 299 transitions, 3079 flow [2024-06-03 20:05:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-03 20:05:28,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-03 20:05:28,429 INFO L175 Difference]: Start difference. First operand has 331 places, 276 transitions, 2403 flow. Second operand 12 states and 146 transitions. [2024-06-03 20:05:28,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 299 transitions, 3079 flow [2024-06-03 20:05:29,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 299 transitions, 2900 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:29,059 INFO L231 Difference]: Finished difference. Result has 330 places, 273 transitions, 2380 flow [2024-06-03 20:05:29,059 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} [2024-06-03 20:05:29,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-03 20:05:29,059 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 273 transitions, 2380 flow [2024-06-03 20:05:29,060 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) [2024-06-03 20:05:29,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:29,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:29,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-03 20:05:29,060 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)] === [2024-06-03 20:05:29,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1561943835, now seen corresponding path program 4 times [2024-06-03 20:05:29,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:29,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547127976] [2024-06-03 20:05:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:29,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:30,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:30,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547127976] [2024-06-03 20:05:30,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547127976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:30,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:30,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:30,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690559140] [2024-06-03 20:05:30,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:30,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:30,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:30,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:30,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:30,953 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) [2024-06-03 20:05:30,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:30,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:30,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:31,452 INFO L124 PetriNetUnfolderBase]: 750/1370 cut-off events. [2024-06-03 20:05:31,452 INFO L125 PetriNetUnfolderBase]: For 192614/192614 co-relation queries the response was YES. [2024-06-03 20:05:31,461 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. [2024-06-03 20:05:31,465 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 87 changer transitions 0/292 dead transitions. [2024-06-03 20:05:31,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 292 transitions, 3044 flow [2024-06-03 20:05:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:31,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 20:05:31,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 20:05:31,466 INFO L175 Difference]: Start difference. First operand has 330 places, 273 transitions, 2380 flow. Second operand 11 states and 134 transitions. [2024-06-03 20:05:31,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 292 transitions, 3044 flow [2024-06-03 20:05:32,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 292 transitions, 2866 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:32,074 INFO L231 Difference]: Finished difference. Result has 327 places, 274 transitions, 2416 flow [2024-06-03 20:05:32,074 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} [2024-06-03 20:05:32,074 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-03 20:05:32,074 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 274 transitions, 2416 flow [2024-06-03 20:05:32,074 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) [2024-06-03 20:05:32,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:32,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:32,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-03 20:05:32,074 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)] === [2024-06-03 20:05:32,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:32,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1561950779, now seen corresponding path program 9 times [2024-06-03 20:05:32,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:32,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794006495] [2024-06-03 20:05:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:32,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:33,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794006495] [2024-06-03 20:05:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794006495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:33,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:33,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279192956] [2024-06-03 20:05:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:33,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:33,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:33,764 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) [2024-06-03 20:05:33,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:33,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:33,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:34,517 INFO L124 PetriNetUnfolderBase]: 768/1416 cut-off events. [2024-06-03 20:05:34,517 INFO L125 PetriNetUnfolderBase]: For 275127/275127 co-relation queries the response was YES. [2024-06-03 20:05:34,524 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. [2024-06-03 20:05:34,527 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 114 changer transitions 13/298 dead transitions. [2024-06-03 20:05:34,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 298 transitions, 3094 flow [2024-06-03 20:05:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:34,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-03 20:05:34,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 20:05:34,528 INFO L175 Difference]: Start difference. First operand has 327 places, 274 transitions, 2416 flow. Second operand 12 states and 152 transitions. [2024-06-03 20:05:34,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 298 transitions, 3094 flow [2024-06-03 20:05:34,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 298 transitions, 2890 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-03 20:05:34,996 INFO L231 Difference]: Finished difference. Result has 330 places, 267 transitions, 2390 flow [2024-06-03 20:05:34,997 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} [2024-06-03 20:05:34,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-03 20:05:34,997 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 267 transitions, 2390 flow [2024-06-03 20:05:34,997 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) [2024-06-03 20:05:34,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:34,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:34,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-03 20:05:34,997 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)] === [2024-06-03 20:05:34,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:34,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1566712379, now seen corresponding path program 10 times [2024-06-03 20:05:34,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:34,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774575333] [2024-06-03 20:05:34,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:34,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:36,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:36,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774575333] [2024-06-03 20:05:36,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774575333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:36,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:36,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:36,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748050206] [2024-06-03 20:05:36,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:36,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:36,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:36,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:36,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:36,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:36,639 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) [2024-06-03 20:05:36,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:36,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:36,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:37,222 INFO L124 PetriNetUnfolderBase]: 750/1390 cut-off events. [2024-06-03 20:05:37,222 INFO L125 PetriNetUnfolderBase]: For 254771/254771 co-relation queries the response was YES. [2024-06-03 20:05:37,231 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. [2024-06-03 20:05:37,235 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 197 selfloop transitions, 85 changer transitions 10/294 dead transitions. [2024-06-03 20:05:37,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 294 transitions, 3298 flow [2024-06-03 20:05:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:37,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-03 20:05:37,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-03 20:05:37,236 INFO L175 Difference]: Start difference. First operand has 330 places, 267 transitions, 2390 flow. Second operand 12 states and 149 transitions. [2024-06-03 20:05:37,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 294 transitions, 3298 flow [2024-06-03 20:05:37,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 294 transitions, 3056 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-03 20:05:37,770 INFO L231 Difference]: Finished difference. Result has 326 places, 264 transitions, 2307 flow [2024-06-03 20:05:37,770 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} [2024-06-03 20:05:37,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-03 20:05:37,770 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 264 transitions, 2307 flow [2024-06-03 20:05:37,770 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) [2024-06-03 20:05:37,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:37,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:37,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-03 20:05:37,771 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)] === [2024-06-03 20:05:37,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1562128409, now seen corresponding path program 11 times [2024-06-03 20:05:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:37,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083769612] [2024-06-03 20:05:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:39,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:39,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083769612] [2024-06-03 20:05:39,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083769612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:39,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:39,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:39,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569868136] [2024-06-03 20:05:39,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:39,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:39,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:39,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:39,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:39,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:39,399 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) [2024-06-03 20:05:39,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:39,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:39,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:39,945 INFO L124 PetriNetUnfolderBase]: 740/1372 cut-off events. [2024-06-03 20:05:39,946 INFO L125 PetriNetUnfolderBase]: For 248535/248535 co-relation queries the response was YES. [2024-06-03 20:05:39,955 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. [2024-06-03 20:05:39,959 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 95 changer transitions 11/287 dead transitions. [2024-06-03 20:05:39,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 287 transitions, 2953 flow [2024-06-03 20:05:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-03 20:05:39,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-03 20:05:39,960 INFO L175 Difference]: Start difference. First operand has 326 places, 264 transitions, 2307 flow. Second operand 12 states and 147 transitions. [2024-06-03 20:05:39,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 287 transitions, 2953 flow [2024-06-03 20:05:40,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 287 transitions, 2783 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:05:40,651 INFO L231 Difference]: Finished difference. Result has 324 places, 261 transitions, 2303 flow [2024-06-03 20:05:40,651 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} [2024-06-03 20:05:40,651 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-03 20:05:40,651 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 261 transitions, 2303 flow [2024-06-03 20:05:40,651 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) [2024-06-03 20:05:40,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:40,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:40,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-03 20:05:40,652 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)] === [2024-06-03 20:05:40,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1436331635, now seen corresponding path program 12 times [2024-06-03 20:05:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:40,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080200143] [2024-06-03 20:05:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:40,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:41,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:41,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080200143] [2024-06-03 20:05:41,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080200143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:41,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:41,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:41,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948068195] [2024-06-03 20:05:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:41,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:42,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:42,026 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) [2024-06-03 20:05:42,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:42,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:42,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:42,517 INFO L124 PetriNetUnfolderBase]: 711/1313 cut-off events. [2024-06-03 20:05:42,518 INFO L125 PetriNetUnfolderBase]: For 194157/194157 co-relation queries the response was YES. [2024-06-03 20:05:42,525 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. [2024-06-03 20:05:42,527 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 108 changer transitions 9/286 dead transitions. [2024-06-03 20:05:42,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 286 transitions, 3177 flow [2024-06-03 20:05:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:42,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-03 20:05:42,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-03 20:05:42,528 INFO L175 Difference]: Start difference. First operand has 324 places, 261 transitions, 2303 flow. Second operand 11 states and 142 transitions. [2024-06-03 20:05:42,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 286 transitions, 3177 flow [2024-06-03 20:05:43,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 286 transitions, 2979 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:05:43,027 INFO L231 Difference]: Finished difference. Result has 319 places, 257 transitions, 2300 flow [2024-06-03 20:05:43,027 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} [2024-06-03 20:05:43,027 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-03 20:05:43,027 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 257 transitions, 2300 flow [2024-06-03 20:05:43,027 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) [2024-06-03 20:05:43,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:43,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:43,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-03 20:05:43,028 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)] === [2024-06-03 20:05:43,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:43,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1000206733, now seen corresponding path program 13 times [2024-06-03 20:05:43,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:43,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112667415] [2024-06-03 20:05:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:43,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:44,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:44,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112667415] [2024-06-03 20:05:44,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112667415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:44,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:44,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:44,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002246523] [2024-06-03 20:05:44,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:44,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:44,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:44,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:44,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:44,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:44,489 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) [2024-06-03 20:05:44,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:44,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:44,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:45,000 INFO L124 PetriNetUnfolderBase]: 711/1313 cut-off events. [2024-06-03 20:05:45,000 INFO L125 PetriNetUnfolderBase]: For 216946/216946 co-relation queries the response was YES. [2024-06-03 20:05:45,008 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. [2024-06-03 20:05:45,011 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 67 changer transitions 7/281 dead transitions. [2024-06-03 20:05:45,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 281 transitions, 2978 flow [2024-06-03 20:05:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-03 20:05:45,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-03 20:05:45,012 INFO L175 Difference]: Start difference. First operand has 319 places, 257 transitions, 2300 flow. Second operand 11 states and 145 transitions. [2024-06-03 20:05:45,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 281 transitions, 2978 flow [2024-06-03 20:05:45,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 281 transitions, 2740 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:05:45,462 INFO L231 Difference]: Finished difference. Result has 313 places, 255 transitions, 2217 flow [2024-06-03 20:05:45,462 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} [2024-06-03 20:05:45,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-03 20:05:45,462 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 255 transitions, 2217 flow [2024-06-03 20:05:45,462 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) [2024-06-03 20:05:45,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:45,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:45,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-03 20:05:45,462 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)] === [2024-06-03 20:05:45,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:45,463 INFO L85 PathProgramCache]: Analyzing trace with hash 953311335, now seen corresponding path program 5 times [2024-06-03 20:05:45,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:45,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3938489] [2024-06-03 20:05:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:45,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:47,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:47,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3938489] [2024-06-03 20:05:47,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3938489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:47,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:47,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:47,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702517758] [2024-06-03 20:05:47,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:47,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:47,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:47,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:47,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:47,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:47,193 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) [2024-06-03 20:05:47,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:47,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:47,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:47,595 INFO L124 PetriNetUnfolderBase]: 691/1273 cut-off events. [2024-06-03 20:05:47,595 INFO L125 PetriNetUnfolderBase]: For 155657/155657 co-relation queries the response was YES. [2024-06-03 20:05:47,603 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. [2024-06-03 20:05:47,606 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 237 selfloop transitions, 34 changer transitions 0/273 dead transitions. [2024-06-03 20:05:47,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 273 transitions, 2839 flow [2024-06-03 20:05:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:47,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-03 20:05:47,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-03 20:05:47,607 INFO L175 Difference]: Start difference. First operand has 313 places, 255 transitions, 2217 flow. Second operand 11 states and 125 transitions. [2024-06-03 20:05:47,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 273 transitions, 2839 flow [2024-06-03 20:05:48,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 273 transitions, 2672 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-03 20:05:48,066 INFO L231 Difference]: Finished difference. Result has 314 places, 256 transitions, 2160 flow [2024-06-03 20:05:48,066 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} [2024-06-03 20:05:48,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-03 20:05:48,066 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 256 transitions, 2160 flow [2024-06-03 20:05:48,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:05:48,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:48,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:48,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-03 20:05:48,067 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)] === [2024-06-03 20:05:48,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:48,067 INFO L85 PathProgramCache]: Analyzing trace with hash 953599635, now seen corresponding path program 6 times [2024-06-03 20:05:48,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:48,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66236829] [2024-06-03 20:05:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:48,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:49,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:49,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:49,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66236829] [2024-06-03 20:05:49,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66236829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:49,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:49,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877164701] [2024-06-03 20:05:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:49,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:49,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:49,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:49,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:49,765 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) [2024-06-03 20:05:49,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:49,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:49,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:50,217 INFO L124 PetriNetUnfolderBase]: 703/1301 cut-off events. [2024-06-03 20:05:50,217 INFO L125 PetriNetUnfolderBase]: For 192512/192512 co-relation queries the response was YES. [2024-06-03 20:05:50,227 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. [2024-06-03 20:05:50,230 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 28 changer transitions 13/276 dead transitions. [2024-06-03 20:05:50,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 276 transitions, 2798 flow [2024-06-03 20:05:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 20:05:50,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 20:05:50,231 INFO L175 Difference]: Start difference. First operand has 314 places, 256 transitions, 2160 flow. Second operand 11 states and 127 transitions. [2024-06-03 20:05:50,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 276 transitions, 2798 flow [2024-06-03 20:05:50,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 276 transitions, 2698 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-03 20:05:50,789 INFO L231 Difference]: Finished difference. Result has 316 places, 252 transitions, 2091 flow [2024-06-03 20:05:50,790 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} [2024-06-03 20:05:50,790 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-03 20:05:50,790 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 252 transitions, 2091 flow [2024-06-03 20:05:50,790 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) [2024-06-03 20:05:50,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:50,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:50,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-03 20:05:50,790 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)] === [2024-06-03 20:05:50,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1000211383, now seen corresponding path program 14 times [2024-06-03 20:05:50,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:50,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110177321] [2024-06-03 20:05:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:50,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:52,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:52,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:52,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110177321] [2024-06-03 20:05:52,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110177321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:52,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:52,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:52,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272703840] [2024-06-03 20:05:52,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:52,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:52,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:52,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:52,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:52,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:52,496 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) [2024-06-03 20:05:52,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:52,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:52,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:53,073 INFO L124 PetriNetUnfolderBase]: 720/1340 cut-off events. [2024-06-03 20:05:53,073 INFO L125 PetriNetUnfolderBase]: For 258571/258571 co-relation queries the response was YES. [2024-06-03 20:05:53,083 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. [2024-06-03 20:05:53,087 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 62 changer transitions 8/281 dead transitions. [2024-06-03 20:05:53,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 281 transitions, 2983 flow [2024-06-03 20:05:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:05:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:05:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-03 20:05:53,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-03 20:05:53,088 INFO L175 Difference]: Start difference. First operand has 316 places, 252 transitions, 2091 flow. Second operand 12 states and 154 transitions. [2024-06-03 20:05:53,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 281 transitions, 2983 flow [2024-06-03 20:05:53,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 281 transitions, 2915 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 20:05:53,607 INFO L231 Difference]: Finished difference. Result has 313 places, 249 transitions, 2136 flow [2024-06-03 20:05:53,608 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} [2024-06-03 20:05:53,608 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-03 20:05:53,608 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 249 transitions, 2136 flow [2024-06-03 20:05:53,608 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) [2024-06-03 20:05:53,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:53,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:53,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-03 20:05:53,608 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)] === [2024-06-03 20:05:53,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1130299177, now seen corresponding path program 15 times [2024-06-03 20:05:53,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:53,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964578519] [2024-06-03 20:05:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:53,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:54,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:54,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964578519] [2024-06-03 20:05:54,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964578519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:54,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:54,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:05:54,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075755799] [2024-06-03 20:05:54,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:54,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:05:54,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:05:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:05:54,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:54,937 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) [2024-06-03 20:05:54,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:54,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:54,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:55,497 INFO L124 PetriNetUnfolderBase]: 725/1355 cut-off events. [2024-06-03 20:05:55,497 INFO L125 PetriNetUnfolderBase]: For 294254/294254 co-relation queries the response was YES. [2024-06-03 20:05:55,507 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. [2024-06-03 20:05:55,510 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 198 selfloop transitions, 57 changer transitions 15/272 dead transitions. [2024-06-03 20:05:55,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 272 transitions, 2760 flow [2024-06-03 20:05:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-03 20:05:55,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-03 20:05:55,511 INFO L175 Difference]: Start difference. First operand has 313 places, 249 transitions, 2136 flow. Second operand 11 states and 144 transitions. [2024-06-03 20:05:55,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 272 transitions, 2760 flow [2024-06-03 20:05:56,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 272 transitions, 2634 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 20:05:56,158 INFO L231 Difference]: Finished difference. Result has 309 places, 242 transitions, 2078 flow [2024-06-03 20:05:56,159 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} [2024-06-03 20:05:56,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-03 20:05:56,159 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 242 transitions, 2078 flow [2024-06-03 20:05:56,159 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) [2024-06-03 20:05:56,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:56,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:56,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-03 20:05:56,160 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)] === [2024-06-03 20:05:56,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:56,160 INFO L85 PathProgramCache]: Analyzing trace with hash -993540059, now seen corresponding path program 7 times [2024-06-03 20:05:56,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:56,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208585811] [2024-06-03 20:05:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:56,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:05:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:05:58,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:05:58,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208585811] [2024-06-03 20:05:58,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208585811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:05:58,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:05:58,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:05:58,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752560318] [2024-06-03 20:05:58,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:05:58,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:05:58,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:05:58,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:05:58,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:05:58,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:05:58,239 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) [2024-06-03 20:05:58,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:05:58,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:05:58,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:05:58,787 INFO L124 PetriNetUnfolderBase]: 686/1274 cut-off events. [2024-06-03 20:05:58,787 INFO L125 PetriNetUnfolderBase]: For 207545/207545 co-relation queries the response was YES. [2024-06-03 20:05:58,793 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. [2024-06-03 20:05:58,796 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 207 selfloop transitions, 52 changer transitions 0/261 dead transitions. [2024-06-03 20:05:58,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 261 transitions, 2684 flow [2024-06-03 20:05:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:05:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:05:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 20:05:58,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 20:05:58,797 INFO L175 Difference]: Start difference. First operand has 309 places, 242 transitions, 2078 flow. Second operand 11 states and 133 transitions. [2024-06-03 20:05:58,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 261 transitions, 2684 flow [2024-06-03 20:05:59,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 261 transitions, 2556 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-03 20:05:59,317 INFO L231 Difference]: Finished difference. Result has 301 places, 243 transitions, 2098 flow [2024-06-03 20:05:59,318 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} [2024-06-03 20:05:59,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-03 20:05:59,318 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 243 transitions, 2098 flow [2024-06-03 20:05:59,318 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) [2024-06-03 20:05:59,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:05:59,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:05:59,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-03 20:05:59,318 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)] === [2024-06-03 20:05:59,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:05:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash 723614355, now seen corresponding path program 8 times [2024-06-03 20:05:59,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:05:59,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404503783] [2024-06-03 20:05:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:05:59,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:05:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:00,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:00,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404503783] [2024-06-03 20:06:00,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404503783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:00,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:00,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:00,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855260748] [2024-06-03 20:06:00,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:00,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:00,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:00,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:00,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:00,835 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) [2024-06-03 20:06:00,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:00,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:00,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:01,262 INFO L124 PetriNetUnfolderBase]: 690/1282 cut-off events. [2024-06-03 20:06:01,262 INFO L125 PetriNetUnfolderBase]: For 190450/190450 co-relation queries the response was YES. [2024-06-03 20:06:01,270 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. [2024-06-03 20:06:01,274 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 56 changer transitions 0/262 dead transitions. [2024-06-03 20:06:01,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 262 transitions, 2706 flow [2024-06-03 20:06:01,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 20:06:01,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 20:06:01,274 INFO L175 Difference]: Start difference. First operand has 301 places, 243 transitions, 2098 flow. Second operand 11 states and 133 transitions. [2024-06-03 20:06:01,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 262 transitions, 2706 flow [2024-06-03 20:06:01,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 262 transitions, 2570 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-03 20:06:01,851 INFO L231 Difference]: Finished difference. Result has 303 places, 244 transitions, 2119 flow [2024-06-03 20:06:01,851 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} [2024-06-03 20:06:01,851 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-03 20:06:01,851 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 244 transitions, 2119 flow [2024-06-03 20:06:01,851 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) [2024-06-03 20:06:01,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:01,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:01,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-03 20:06:01,851 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)] === [2024-06-03 20:06:01,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1157667991, now seen corresponding path program 9 times [2024-06-03 20:06:01,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:01,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670120213] [2024-06-03 20:06:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:01,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:03,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670120213] [2024-06-03 20:06:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670120213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:03,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:03,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:03,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062032451] [2024-06-03 20:06:03,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:03,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:03,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:03,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:03,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:03,369 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) [2024-06-03 20:06:03,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:03,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:03,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:03,821 INFO L124 PetriNetUnfolderBase]: 730/1362 cut-off events. [2024-06-03 20:06:03,822 INFO L125 PetriNetUnfolderBase]: For 261846/261846 co-relation queries the response was YES. [2024-06-03 20:06:03,829 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. [2024-06-03 20:06:03,832 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 65 changer transitions 0/270 dead transitions. [2024-06-03 20:06:03,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 270 transitions, 3027 flow [2024-06-03 20:06:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-03 20:06:03,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-03 20:06:03,833 INFO L175 Difference]: Start difference. First operand has 303 places, 244 transitions, 2119 flow. Second operand 11 states and 143 transitions. [2024-06-03 20:06:03,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 270 transitions, 3027 flow [2024-06-03 20:06:04,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 270 transitions, 2882 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-03 20:06:04,569 INFO L231 Difference]: Finished difference. Result has 305 places, 246 transitions, 2190 flow [2024-06-03 20:06:04,569 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} [2024-06-03 20:06:04,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-03 20:06:04,569 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 246 transitions, 2190 flow [2024-06-03 20:06:04,569 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) [2024-06-03 20:06:04,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:04,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:04,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-03 20:06:04,570 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)] === [2024-06-03 20:06:04,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:04,570 INFO L85 PathProgramCache]: Analyzing trace with hash 593357301, now seen corresponding path program 10 times [2024-06-03 20:06:04,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:04,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856282414] [2024-06-03 20:06:04,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:04,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:05,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:05,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856282414] [2024-06-03 20:06:05,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856282414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:05,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:05,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:05,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919083392] [2024-06-03 20:06:05,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:05,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:05,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:06,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:06,102 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) [2024-06-03 20:06:06,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:06,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:06,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:06,614 INFO L124 PetriNetUnfolderBase]: 770/1442 cut-off events. [2024-06-03 20:06:06,614 INFO L125 PetriNetUnfolderBase]: For 332747/332747 co-relation queries the response was YES. [2024-06-03 20:06:06,624 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. [2024-06-03 20:06:06,628 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 57 changer transitions 0/271 dead transitions. [2024-06-03 20:06:06,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 271 transitions, 3102 flow [2024-06-03 20:06:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:06,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-03 20:06:06,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-03 20:06:06,629 INFO L175 Difference]: Start difference. First operand has 305 places, 246 transitions, 2190 flow. Second operand 11 states and 138 transitions. [2024-06-03 20:06:06,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 271 transitions, 3102 flow [2024-06-03 20:06:07,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 271 transitions, 2959 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-03 20:06:07,507 INFO L231 Difference]: Finished difference. Result has 308 places, 248 transitions, 2251 flow [2024-06-03 20:06:07,507 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} [2024-06-03 20:06:07,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-03 20:06:07,507 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 248 transitions, 2251 flow [2024-06-03 20:06:07,508 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) [2024-06-03 20:06:07,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:07,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:07,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-03 20:06:07,508 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)] === [2024-06-03 20:06:07,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1335045465, now seen corresponding path program 16 times [2024-06-03 20:06:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:07,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836853171] [2024-06-03 20:06:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:07,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:09,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:09,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836853171] [2024-06-03 20:06:09,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836853171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:09,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:09,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:09,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554686689] [2024-06-03 20:06:09,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:09,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:09,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:09,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:09,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:09,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:09,324 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) [2024-06-03 20:06:09,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:09,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:09,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:09,999 INFO L124 PetriNetUnfolderBase]: 795/1493 cut-off events. [2024-06-03 20:06:09,999 INFO L125 PetriNetUnfolderBase]: For 382652/382652 co-relation queries the response was YES. [2024-06-03 20:06:10,009 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. [2024-06-03 20:06:10,014 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 70 changer transitions 11/276 dead transitions. [2024-06-03 20:06:10,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 276 transitions, 2915 flow [2024-06-03 20:06:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-03 20:06:10,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-03 20:06:10,015 INFO L175 Difference]: Start difference. First operand has 308 places, 248 transitions, 2251 flow. Second operand 12 states and 148 transitions. [2024-06-03 20:06:10,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 276 transitions, 2915 flow [2024-06-03 20:06:11,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 276 transitions, 2794 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-03 20:06:11,048 INFO L231 Difference]: Finished difference. Result has 314 places, 249 transitions, 2284 flow [2024-06-03 20:06:11,049 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} [2024-06-03 20:06:11,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-03 20:06:11,049 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 249 transitions, 2284 flow [2024-06-03 20:06:11,049 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) [2024-06-03 20:06:11,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:11,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:11,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-03 20:06:11,049 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)] === [2024-06-03 20:06:11,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:11,050 INFO L85 PathProgramCache]: Analyzing trace with hash 723376771, now seen corresponding path program 17 times [2024-06-03 20:06:11,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:11,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677307601] [2024-06-03 20:06:11,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:11,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:13,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:13,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677307601] [2024-06-03 20:06:13,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677307601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:13,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:13,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:13,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777712353] [2024-06-03 20:06:13,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:13,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:13,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:13,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:13,231 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) [2024-06-03 20:06:13,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:13,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:13,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:13,949 INFO L124 PetriNetUnfolderBase]: 787/1481 cut-off events. [2024-06-03 20:06:13,949 INFO L125 PetriNetUnfolderBase]: For 388931/388931 co-relation queries the response was YES. [2024-06-03 20:06:13,958 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. [2024-06-03 20:06:13,962 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 41 changer transitions 21/273 dead transitions. [2024-06-03 20:06:13,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 273 transitions, 2912 flow [2024-06-03 20:06:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 20:06:13,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 20:06:13,963 INFO L175 Difference]: Start difference. First operand has 314 places, 249 transitions, 2284 flow. Second operand 12 states and 145 transitions. [2024-06-03 20:06:13,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 273 transitions, 2912 flow [2024-06-03 20:06:14,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 273 transitions, 2723 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:06:14,982 INFO L231 Difference]: Finished difference. Result has 314 places, 238 transitions, 2097 flow [2024-06-03 20:06:14,983 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} [2024-06-03 20:06:14,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-03 20:06:14,983 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 238 transitions, 2097 flow [2024-06-03 20:06:14,983 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) [2024-06-03 20:06:14,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:14,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:14,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-03 20:06:14,983 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)] === [2024-06-03 20:06:14,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:14,984 INFO L85 PathProgramCache]: Analyzing trace with hash 552991303, now seen corresponding path program 11 times [2024-06-03 20:06:14,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:14,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166891523] [2024-06-03 20:06:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:14,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:16,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:16,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166891523] [2024-06-03 20:06:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166891523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:16,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:16,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:16,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586074847] [2024-06-03 20:06:16,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:16,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:16,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:16,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:16,889 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) [2024-06-03 20:06:16,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:16,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:16,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:17,381 INFO L124 PetriNetUnfolderBase]: 732/1384 cut-off events. [2024-06-03 20:06:17,381 INFO L125 PetriNetUnfolderBase]: For 332298/332298 co-relation queries the response was YES. [2024-06-03 20:06:17,390 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. [2024-06-03 20:06:17,393 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 212 selfloop transitions, 41 changer transitions 0/255 dead transitions. [2024-06-03 20:06:17,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 255 transitions, 2649 flow [2024-06-03 20:06:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:17,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:06:17,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:06:17,394 INFO L175 Difference]: Start difference. First operand has 314 places, 238 transitions, 2097 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:06:17,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 255 transitions, 2649 flow [2024-06-03 20:06:18,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 255 transitions, 2545 flow, removed 11 selfloop flow, removed 13 redundant places. [2024-06-03 20:06:18,341 INFO L231 Difference]: Finished difference. Result has 304 places, 238 transitions, 2080 flow [2024-06-03 20:06:18,341 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} [2024-06-03 20:06:18,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-03 20:06:18,342 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 238 transitions, 2080 flow [2024-06-03 20:06:18,342 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) [2024-06-03 20:06:18,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:18,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:18,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-03 20:06:18,342 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)] === [2024-06-03 20:06:18,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:18,343 INFO L85 PathProgramCache]: Analyzing trace with hash -993777643, now seen corresponding path program 18 times [2024-06-03 20:06:18,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:18,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369633267] [2024-06-03 20:06:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:18,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:20,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:20,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369633267] [2024-06-03 20:06:20,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369633267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:20,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:20,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:20,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234383563] [2024-06-03 20:06:20,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:20,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:20,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:20,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:20,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:20,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:20,539 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) [2024-06-03 20:06:20,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:20,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:20,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:21,303 INFO L124 PetriNetUnfolderBase]: 727/1381 cut-off events. [2024-06-03 20:06:21,303 INFO L125 PetriNetUnfolderBase]: For 328823/328823 co-relation queries the response was YES. [2024-06-03 20:06:21,312 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. [2024-06-03 20:06:21,316 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 52 changer transitions 16/263 dead transitions. [2024-06-03 20:06:21,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 263 transitions, 2692 flow [2024-06-03 20:06:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-03 20:06:21,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-03 20:06:21,316 INFO L175 Difference]: Start difference. First operand has 304 places, 238 transitions, 2080 flow. Second operand 12 states and 152 transitions. [2024-06-03 20:06:21,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 263 transitions, 2692 flow [2024-06-03 20:06:22,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 263 transitions, 2579 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-03 20:06:22,056 INFO L231 Difference]: Finished difference. Result has 306 places, 232 transitions, 2031 flow [2024-06-03 20:06:22,056 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} [2024-06-03 20:06:22,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-03 20:06:22,056 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 232 transitions, 2031 flow [2024-06-03 20:06:22,056 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) [2024-06-03 20:06:22,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:22,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:22,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-03 20:06:22,057 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)] === [2024-06-03 20:06:22,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:22,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1301179237, now seen corresponding path program 19 times [2024-06-03 20:06:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:22,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968489298] [2024-06-03 20:06:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:22,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:23,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:23,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968489298] [2024-06-03 20:06:23,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968489298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:23,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:23,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:06:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30591610] [2024-06-03 20:06:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:23,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:06:23,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:06:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:06:23,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:23,421 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) [2024-06-03 20:06:23,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:23,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:23,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:23,950 INFO L124 PetriNetUnfolderBase]: 724/1380 cut-off events. [2024-06-03 20:06:23,950 INFO L125 PetriNetUnfolderBase]: For 344788/344788 co-relation queries the response was YES. [2024-06-03 20:06:23,957 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. [2024-06-03 20:06:23,960 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 46 changer transitions 9/259 dead transitions. [2024-06-03 20:06:23,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 259 transitions, 2859 flow [2024-06-03 20:06:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:23,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-03 20:06:23,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-03 20:06:23,960 INFO L175 Difference]: Start difference. First operand has 306 places, 232 transitions, 2031 flow. Second operand 11 states and 144 transitions. [2024-06-03 20:06:23,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 259 transitions, 2859 flow [2024-06-03 20:06:24,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 259 transitions, 2731 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-03 20:06:24,839 INFO L231 Difference]: Finished difference. Result has 298 places, 228 transitions, 1974 flow [2024-06-03 20:06:24,839 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} [2024-06-03 20:06:24,839 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-03 20:06:24,840 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 228 transitions, 1974 flow [2024-06-03 20:06:24,840 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) [2024-06-03 20:06:24,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:24,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:24,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-03 20:06:24,840 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)] === [2024-06-03 20:06:24,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:24,840 INFO L85 PathProgramCache]: Analyzing trace with hash 586855237, now seen corresponding path program 20 times [2024-06-03 20:06:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391484540] [2024-06-03 20:06:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:24,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:26,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:26,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391484540] [2024-06-03 20:06:26,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391484540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:26,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:26,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:26,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698775994] [2024-06-03 20:06:26,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:26,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:26,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:26,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:26,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:26,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:26,506 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) [2024-06-03 20:06:26,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:26,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:26,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:27,075 INFO L124 PetriNetUnfolderBase]: 719/1373 cut-off events. [2024-06-03 20:06:27,075 INFO L125 PetriNetUnfolderBase]: For 334864/334864 co-relation queries the response was YES. [2024-06-03 20:06:27,083 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. [2024-06-03 20:06:27,086 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 34 changer transitions 19/251 dead transitions. [2024-06-03 20:06:27,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 251 transitions, 2554 flow [2024-06-03 20:06:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:27,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-03 20:06:27,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-03 20:06:27,088 INFO L175 Difference]: Start difference. First operand has 298 places, 228 transitions, 1974 flow. Second operand 12 states and 142 transitions. [2024-06-03 20:06:27,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 251 transitions, 2554 flow [2024-06-03 20:06:27,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 251 transitions, 2461 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:06:27,751 INFO L231 Difference]: Finished difference. Result has 296 places, 219 transitions, 1872 flow [2024-06-03 20:06:27,751 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} [2024-06-03 20:06:27,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-03 20:06:27,751 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 219 transitions, 1872 flow [2024-06-03 20:06:27,751 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) [2024-06-03 20:06:27,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:27,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:27,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-03 20:06:27,752 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)] === [2024-06-03 20:06:27,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1301294557, now seen corresponding path program 21 times [2024-06-03 20:06:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:27,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855600280] [2024-06-03 20:06:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:27,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:29,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:29,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855600280] [2024-06-03 20:06:29,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855600280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:29,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:29,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:29,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135263447] [2024-06-03 20:06:29,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:29,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:29,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:29,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:29,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:29,398 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) [2024-06-03 20:06:29,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:29,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:29,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:29,997 INFO L124 PetriNetUnfolderBase]: 726/1402 cut-off events. [2024-06-03 20:06:29,997 INFO L125 PetriNetUnfolderBase]: For 385817/385817 co-relation queries the response was YES. [2024-06-03 20:06:30,008 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. [2024-06-03 20:06:30,014 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 44 changer transitions 11/248 dead transitions. [2024-06-03 20:06:30,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 248 transitions, 2674 flow [2024-06-03 20:06:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:30,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-03 20:06:30,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-03 20:06:30,014 INFO L175 Difference]: Start difference. First operand has 296 places, 219 transitions, 1872 flow. Second operand 12 states and 151 transitions. [2024-06-03 20:06:30,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 248 transitions, 2674 flow [2024-06-03 20:06:30,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 248 transitions, 2590 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 20:06:30,852 INFO L231 Difference]: Finished difference. Result has 290 places, 215 transitions, 1857 flow [2024-06-03 20:06:30,852 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} [2024-06-03 20:06:30,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-03 20:06:30,853 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 215 transitions, 1857 flow [2024-06-03 20:06:30,853 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) [2024-06-03 20:06:30,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:30,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:30,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-03 20:06:30,853 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)] === [2024-06-03 20:06:30,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:30,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1296526013, now seen corresponding path program 12 times [2024-06-03 20:06:30,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:30,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300389731] [2024-06-03 20:06:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:30,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:32,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:32,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:32,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300389731] [2024-06-03 20:06:32,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300389731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:32,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:32,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:32,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006866176] [2024-06-03 20:06:32,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:32,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:32,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:32,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:32,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:32,618 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) [2024-06-03 20:06:32,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:32,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:32,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:33,082 INFO L124 PetriNetUnfolderBase]: 700/1348 cut-off events. [2024-06-03 20:06:33,082 INFO L125 PetriNetUnfolderBase]: For 333873/333873 co-relation queries the response was YES. [2024-06-03 20:06:33,089 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. [2024-06-03 20:06:33,093 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 40 changer transitions 0/232 dead transitions. [2024-06-03 20:06:33,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 232 transitions, 2363 flow [2024-06-03 20:06:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 20:06:33,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-03 20:06:33,094 INFO L175 Difference]: Start difference. First operand has 290 places, 215 transitions, 1857 flow. Second operand 11 states and 130 transitions. [2024-06-03 20:06:33,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 232 transitions, 2363 flow [2024-06-03 20:06:33,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 232 transitions, 2274 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:06:33,918 INFO L231 Difference]: Finished difference. Result has 284 places, 215 transitions, 1852 flow [2024-06-03 20:06:33,918 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} [2024-06-03 20:06:33,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-03 20:06:33,918 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 215 transitions, 1852 flow [2024-06-03 20:06:33,918 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) [2024-06-03 20:06:33,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:33,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:33,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-03 20:06:33,919 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)] === [2024-06-03 20:06:33,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:33,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1296705937, now seen corresponding path program 22 times [2024-06-03 20:06:33,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:33,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093916641] [2024-06-03 20:06:33,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:33,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:35,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:35,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093916641] [2024-06-03 20:06:35,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093916641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:35,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:35,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:06:35,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210962404] [2024-06-03 20:06:35,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:35,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:06:35,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:06:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:06:35,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:35,316 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) [2024-06-03 20:06:35,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:35,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:35,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:35,900 INFO L124 PetriNetUnfolderBase]: 687/1325 cut-off events. [2024-06-03 20:06:35,900 INFO L125 PetriNetUnfolderBase]: For 304818/304818 co-relation queries the response was YES. [2024-06-03 20:06:35,906 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. [2024-06-03 20:06:35,909 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 186 selfloop transitions, 42 changer transitions 8/238 dead transitions. [2024-06-03 20:06:35,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 238 transitions, 2408 flow [2024-06-03 20:06:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:35,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-03 20:06:35,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-03 20:06:35,910 INFO L175 Difference]: Start difference. First operand has 284 places, 215 transitions, 1852 flow. Second operand 11 states and 142 transitions. [2024-06-03 20:06:35,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 238 transitions, 2408 flow [2024-06-03 20:06:36,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 238 transitions, 2302 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-03 20:06:36,628 INFO L231 Difference]: Finished difference. Result has 285 places, 211 transitions, 1804 flow [2024-06-03 20:06:36,628 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} [2024-06-03 20:06:36,628 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-03 20:06:36,628 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 211 transitions, 1804 flow [2024-06-03 20:06:36,628 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) [2024-06-03 20:06:36,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:36,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:36,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-03 20:06:36,628 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)] === [2024-06-03 20:06:36,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:36,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1166267533, now seen corresponding path program 23 times [2024-06-03 20:06:36,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:36,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783836287] [2024-06-03 20:06:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:36,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:38,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:38,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783836287] [2024-06-03 20:06:38,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783836287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:38,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:38,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278332326] [2024-06-03 20:06:38,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:38,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:38,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:38,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:38,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:38,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:38,454 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) [2024-06-03 20:06:38,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:38,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:38,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:39,061 INFO L124 PetriNetUnfolderBase]: 642/1238 cut-off events. [2024-06-03 20:06:39,061 INFO L125 PetriNetUnfolderBase]: For 266217/266217 co-relation queries the response was YES. [2024-06-03 20:06:39,066 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. [2024-06-03 20:06:39,069 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 33 changer transitions 19/234 dead transitions. [2024-06-03 20:06:39,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 234 transitions, 2350 flow [2024-06-03 20:06:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-03 20:06:39,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-03 20:06:39,070 INFO L175 Difference]: Start difference. First operand has 285 places, 211 transitions, 1804 flow. Second operand 12 states and 143 transitions. [2024-06-03 20:06:39,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 234 transitions, 2350 flow [2024-06-03 20:06:39,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 234 transitions, 2245 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-03 20:06:39,570 INFO L231 Difference]: Finished difference. Result has 282 places, 203 transitions, 1713 flow [2024-06-03 20:06:39,570 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} [2024-06-03 20:06:39,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-03 20:06:39,570 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 203 transitions, 1713 flow [2024-06-03 20:06:39,570 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) [2024-06-03 20:06:39,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:39,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:39,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-03 20:06:39,570 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)] === [2024-06-03 20:06:39,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:39,571 INFO L85 PathProgramCache]: Analyzing trace with hash 716947681, now seen corresponding path program 24 times [2024-06-03 20:06:39,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:39,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493935171] [2024-06-03 20:06:39,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:39,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:40,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:40,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493935171] [2024-06-03 20:06:40,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493935171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:40,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:40,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:40,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132690296] [2024-06-03 20:06:40,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:40,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:40,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:40,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:41,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:41,139 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) [2024-06-03 20:06:41,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:41,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:41,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:41,609 INFO L124 PetriNetUnfolderBase]: 585/1123 cut-off events. [2024-06-03 20:06:41,610 INFO L125 PetriNetUnfolderBase]: For 193274/193274 co-relation queries the response was YES. [2024-06-03 20:06:41,616 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. [2024-06-03 20:06:41,619 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 41 changer transitions 11/225 dead transitions. [2024-06-03 20:06:41,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 225 transitions, 2237 flow [2024-06-03 20:06:41,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 20:06:41,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 20:06:41,620 INFO L175 Difference]: Start difference. First operand has 282 places, 203 transitions, 1713 flow. Second operand 12 states and 141 transitions. [2024-06-03 20:06:41,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 225 transitions, 2237 flow [2024-06-03 20:06:41,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 225 transitions, 2155 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-03 20:06:41,994 INFO L231 Difference]: Finished difference. Result has 271 places, 200 transitions, 1695 flow [2024-06-03 20:06:41,994 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} [2024-06-03 20:06:41,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-03 20:06:41,995 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 200 transitions, 1695 flow [2024-06-03 20:06:41,995 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) [2024-06-03 20:06:41,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:41,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:41,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-03 20:06:41,995 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)] === [2024-06-03 20:06:41,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 716943031, now seen corresponding path program 25 times [2024-06-03 20:06:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:41,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687099722] [2024-06-03 20:06:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:43,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:43,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:43,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687099722] [2024-06-03 20:06:43,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687099722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:43,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:43,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:43,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991552656] [2024-06-03 20:06:43,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:43,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:43,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:43,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:43,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:43,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:43,675 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) [2024-06-03 20:06:43,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:43,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:43,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:44,111 INFO L124 PetriNetUnfolderBase]: 551/1057 cut-off events. [2024-06-03 20:06:44,111 INFO L125 PetriNetUnfolderBase]: For 132827/132827 co-relation queries the response was YES. [2024-06-03 20:06:44,117 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. [2024-06-03 20:06:44,120 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 37 changer transitions 14/221 dead transitions. [2024-06-03 20:06:44,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 221 transitions, 2201 flow [2024-06-03 20:06:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:44,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 20:06:44,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 20:06:44,121 INFO L175 Difference]: Start difference. First operand has 271 places, 200 transitions, 1695 flow. Second operand 12 states and 138 transitions. [2024-06-03 20:06:44,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 221 transitions, 2201 flow [2024-06-03 20:06:44,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 221 transitions, 2113 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:06:44,418 INFO L231 Difference]: Finished difference. Result has 269 places, 195 transitions, 1645 flow [2024-06-03 20:06:44,418 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} [2024-06-03 20:06:44,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-03 20:06:44,418 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 195 transitions, 1645 flow [2024-06-03 20:06:44,418 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) [2024-06-03 20:06:44,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:44,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:44,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-03 20:06:44,418 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)] === [2024-06-03 20:06:44,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1689315779, now seen corresponding path program 26 times [2024-06-03 20:06:44,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:44,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390030278] [2024-06-03 20:06:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:44,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:46,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390030278] [2024-06-03 20:06:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390030278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:46,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:46,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976102619] [2024-06-03 20:06:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:46,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:46,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:46,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:46,279 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) [2024-06-03 20:06:46,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:46,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:46,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:46,914 INFO L124 PetriNetUnfolderBase]: 575/1105 cut-off events. [2024-06-03 20:06:46,915 INFO L125 PetriNetUnfolderBase]: For 169824/169824 co-relation queries the response was YES. [2024-06-03 20:06:46,920 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. [2024-06-03 20:06:46,923 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 78 changer transitions 7/223 dead transitions. [2024-06-03 20:06:46,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 223 transitions, 2381 flow [2024-06-03 20:06:46,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-03 20:06:46,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-03 20:06:46,924 INFO L175 Difference]: Start difference. First operand has 269 places, 195 transitions, 1645 flow. Second operand 12 states and 146 transitions. [2024-06-03 20:06:46,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 223 transitions, 2381 flow [2024-06-03 20:06:47,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 223 transitions, 2279 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-03 20:06:47,276 INFO L231 Difference]: Finished difference. Result has 260 places, 195 transitions, 1710 flow [2024-06-03 20:06:47,276 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} [2024-06-03 20:06:47,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-03 20:06:47,277 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 195 transitions, 1710 flow [2024-06-03 20:06:47,277 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) [2024-06-03 20:06:47,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:47,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:47,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-03 20:06:47,277 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)] === [2024-06-03 20:06:47,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:47,278 INFO L85 PathProgramCache]: Analyzing trace with hash -414469499, now seen corresponding path program 27 times [2024-06-03 20:06:47,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:47,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139122153] [2024-06-03 20:06:47,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:47,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:48,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:48,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139122153] [2024-06-03 20:06:48,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139122153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:48,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:48,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:48,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702930678] [2024-06-03 20:06:48,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:48,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:48,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:49,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:49,088 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) [2024-06-03 20:06:49,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:49,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:49,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:49,635 INFO L124 PetriNetUnfolderBase]: 544/1044 cut-off events. [2024-06-03 20:06:49,635 INFO L125 PetriNetUnfolderBase]: For 129077/129077 co-relation queries the response was YES. [2024-06-03 20:06:49,640 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. [2024-06-03 20:06:49,643 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 75 changer transitions 13/216 dead transitions. [2024-06-03 20:06:49,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 216 transitions, 2214 flow [2024-06-03 20:06:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-03 20:06:49,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-03 20:06:49,644 INFO L175 Difference]: Start difference. First operand has 260 places, 195 transitions, 1710 flow. Second operand 12 states and 140 transitions. [2024-06-03 20:06:49,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 216 transitions, 2214 flow [2024-06-03 20:06:49,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 216 transitions, 2089 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 20:06:49,890 INFO L231 Difference]: Finished difference. Result has 261 places, 191 transitions, 1709 flow [2024-06-03 20:06:49,890 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} [2024-06-03 20:06:49,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-03 20:06:49,890 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 191 transitions, 1709 flow [2024-06-03 20:06:49,890 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) [2024-06-03 20:06:49,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:49,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:49,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-03 20:06:49,891 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)] === [2024-06-03 20:06:49,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:49,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1918137821, now seen corresponding path program 28 times [2024-06-03 20:06:49,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:49,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749241944] [2024-06-03 20:06:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:49,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:52,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:52,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749241944] [2024-06-03 20:06:52,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749241944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:52,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:52,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899167668] [2024-06-03 20:06:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:52,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:52,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:52,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:52,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:52,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:52,272 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) [2024-06-03 20:06:52,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:52,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:52,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:52,888 INFO L124 PetriNetUnfolderBase]: 567/1093 cut-off events. [2024-06-03 20:06:52,888 INFO L125 PetriNetUnfolderBase]: For 162857/162857 co-relation queries the response was YES. [2024-06-03 20:06:52,894 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. [2024-06-03 20:06:52,897 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 73 changer transitions 11/218 dead transitions. [2024-06-03 20:06:52,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 218 transitions, 2441 flow [2024-06-03 20:06:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:06:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:06:52,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 20:06:52,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 20:06:52,898 INFO L175 Difference]: Start difference. First operand has 261 places, 191 transitions, 1709 flow. Second operand 12 states and 145 transitions. [2024-06-03 20:06:52,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 218 transitions, 2441 flow [2024-06-03 20:06:53,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 218 transitions, 2287 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 20:06:53,262 INFO L231 Difference]: Finished difference. Result has 258 places, 187 transitions, 1676 flow [2024-06-03 20:06:53,262 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} [2024-06-03 20:06:53,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 20:06:53,262 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 187 transitions, 1676 flow [2024-06-03 20:06:53,262 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) [2024-06-03 20:06:53,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:53,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:53,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-03 20:06:53,262 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)] === [2024-06-03 20:06:53,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash -23494333, now seen corresponding path program 13 times [2024-06-03 20:06:53,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:53,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142181245] [2024-06-03 20:06:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:53,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:54,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:54,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142181245] [2024-06-03 20:06:54,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142181245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:54,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:54,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:54,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810782472] [2024-06-03 20:06:54,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:54,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:54,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:54,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:54,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:54,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:54,839 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) [2024-06-03 20:06:54,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:54,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:54,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:55,361 INFO L124 PetriNetUnfolderBase]: 548/1052 cut-off events. [2024-06-03 20:06:55,361 INFO L125 PetriNetUnfolderBase]: For 141627/141627 co-relation queries the response was YES. [2024-06-03 20:06:55,366 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. [2024-06-03 20:06:55,369 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 34 changer transitions 0/204 dead transitions. [2024-06-03 20:06:55,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 204 transitions, 2152 flow [2024-06-03 20:06:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 20:06:55,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-03 20:06:55,370 INFO L175 Difference]: Start difference. First operand has 258 places, 187 transitions, 1676 flow. Second operand 11 states and 129 transitions. [2024-06-03 20:06:55,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 204 transitions, 2152 flow [2024-06-03 20:06:55,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 204 transitions, 1977 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-03 20:06:55,666 INFO L231 Difference]: Finished difference. Result has 250 places, 188 transitions, 1603 flow [2024-06-03 20:06:55,667 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} [2024-06-03 20:06:55,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-03 20:06:55,667 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 188 transitions, 1603 flow [2024-06-03 20:06:55,667 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) [2024-06-03 20:06:55,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:55,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:55,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-03 20:06:55,668 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)] === [2024-06-03 20:06:55,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1913369277, now seen corresponding path program 14 times [2024-06-03 20:06:55,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:55,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845547339] [2024-06-03 20:06:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:55,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:57,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:57,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845547339] [2024-06-03 20:06:57,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845547339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:57,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:57,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:57,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289872684] [2024-06-03 20:06:57,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:57,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:57,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:57,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:57,657 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) [2024-06-03 20:06:57,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:57,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:57,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:06:58,089 INFO L124 PetriNetUnfolderBase]: 552/1060 cut-off events. [2024-06-03 20:06:58,089 INFO L125 PetriNetUnfolderBase]: For 134552/134552 co-relation queries the response was YES. [2024-06-03 20:06:58,094 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. [2024-06-03 20:06:58,097 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 50 changer transitions 0/204 dead transitions. [2024-06-03 20:06:58,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 204 transitions, 2077 flow [2024-06-03 20:06:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:06:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:06:58,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 20:06:58,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-03 20:06:58,098 INFO L175 Difference]: Start difference. First operand has 250 places, 188 transitions, 1603 flow. Second operand 11 states and 126 transitions. [2024-06-03 20:06:58,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 204 transitions, 2077 flow [2024-06-03 20:06:58,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 204 transitions, 1985 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-03 20:06:58,417 INFO L231 Difference]: Finished difference. Result has 252 places, 189 transitions, 1647 flow [2024-06-03 20:06:58,417 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} [2024-06-03 20:06:58,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-03 20:06:58,418 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 189 transitions, 1647 flow [2024-06-03 20:06:58,418 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) [2024-06-03 20:06:58,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:06:58,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:06:58,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-03 20:06:58,419 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)] === [2024-06-03 20:06:58,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:06:58,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1925350841, now seen corresponding path program 15 times [2024-06-03 20:06:58,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:06:58,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160957945] [2024-06-03 20:06:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:06:58,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:06:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:06:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:06:59,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:06:59,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160957945] [2024-06-03 20:06:59,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160957945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:06:59,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:06:59,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:06:59,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590977576] [2024-06-03 20:06:59,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:06:59,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:06:59,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:06:59,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:06:59,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:06:59,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:06:59,835 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) [2024-06-03 20:06:59,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:06:59,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:06:59,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:00,258 INFO L124 PetriNetUnfolderBase]: 564/1088 cut-off events. [2024-06-03 20:07:00,258 INFO L125 PetriNetUnfolderBase]: For 159629/159629 co-relation queries the response was YES. [2024-06-03 20:07:00,263 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. [2024-06-03 20:07:00,266 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 14 changer transitions 13/210 dead transitions. [2024-06-03 20:07:00,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 210 transitions, 2182 flow [2024-06-03 20:07:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 20:07:00,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-03 20:07:00,267 INFO L175 Difference]: Start difference. First operand has 252 places, 189 transitions, 1647 flow. Second operand 11 states and 123 transitions. [2024-06-03 20:07:00,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 210 transitions, 2182 flow [2024-06-03 20:07:00,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 210 transitions, 2054 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-03 20:07:00,547 INFO L231 Difference]: Finished difference. Result has 255 places, 187 transitions, 1533 flow [2024-06-03 20:07:00,548 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} [2024-06-03 20:07:00,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-03 20:07:00,548 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 187 transitions, 1533 flow [2024-06-03 20:07:00,548 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) [2024-06-03 20:07:00,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:00,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:00,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-03 20:07:00,548 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)] === [2024-06-03 20:07:00,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:00,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1325717511, now seen corresponding path program 16 times [2024-06-03 20:07:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:00,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025038203] [2024-06-03 20:07:00,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:00,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:02,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:02,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025038203] [2024-06-03 20:07:02,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025038203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:02,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:02,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494199512] [2024-06-03 20:07:02,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:02,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:02,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:03,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:03,028 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) [2024-06-03 20:07:03,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:03,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:03,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:03,556 INFO L124 PetriNetUnfolderBase]: 530/1018 cut-off events. [2024-06-03 20:07:03,557 INFO L125 PetriNetUnfolderBase]: For 141555/141555 co-relation queries the response was YES. [2024-06-03 20:07:03,562 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. [2024-06-03 20:07:03,565 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 45 changer transitions 0/203 dead transitions. [2024-06-03 20:07:03,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 203 transitions, 2007 flow [2024-06-03 20:07:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 20:07:03,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 20:07:03,566 INFO L175 Difference]: Start difference. First operand has 255 places, 187 transitions, 1533 flow. Second operand 11 states and 127 transitions. [2024-06-03 20:07:03,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 203 transitions, 2007 flow [2024-06-03 20:07:03,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 203 transitions, 1973 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:07:03,860 INFO L231 Difference]: Finished difference. Result has 254 places, 188 transitions, 1627 flow [2024-06-03 20:07:03,860 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} [2024-06-03 20:07:03,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 20:07:03,860 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 188 transitions, 1627 flow [2024-06-03 20:07:03,860 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) [2024-06-03 20:07:03,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:03,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:03,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-03 20:07:03,861 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)] === [2024-06-03 20:07:03,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1152817057, now seen corresponding path program 29 times [2024-06-03 20:07:03,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:03,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107052261] [2024-06-03 20:07:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:03,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:05,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107052261] [2024-06-03 20:07:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107052261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:05,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:05,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:07:05,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597060416] [2024-06-03 20:07:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:05,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:07:05,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:07:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:07:05,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:05,293 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) [2024-06-03 20:07:05,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:05,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:05,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:05,792 INFO L124 PetriNetUnfolderBase]: 546/1054 cut-off events. [2024-06-03 20:07:05,792 INFO L125 PetriNetUnfolderBase]: For 170939/170939 co-relation queries the response was YES. [2024-06-03 20:07:05,798 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. [2024-06-03 20:07:05,800 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 62 changer transitions 7/208 dead transitions. [2024-06-03 20:07:05,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 208 transitions, 2113 flow [2024-06-03 20:07:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-03 20:07:05,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-03 20:07:05,801 INFO L175 Difference]: Start difference. First operand has 254 places, 188 transitions, 1627 flow. Second operand 11 states and 135 transitions. [2024-06-03 20:07:05,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 208 transitions, 2113 flow [2024-06-03 20:07:06,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 208 transitions, 1962 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-03 20:07:06,123 INFO L231 Difference]: Finished difference. Result has 255 places, 185 transitions, 1586 flow [2024-06-03 20:07:06,123 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} [2024-06-03 20:07:06,124 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-03 20:07:06,124 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 185 transitions, 1586 flow [2024-06-03 20:07:06,124 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) [2024-06-03 20:07:06,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:06,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:06,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-03 20:07:06,124 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)] === [2024-06-03 20:07:06,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:06,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1252087001, now seen corresponding path program 17 times [2024-06-03 20:07:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:06,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911392945] [2024-06-03 20:07:06,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:06,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:07,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:07,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911392945] [2024-06-03 20:07:07,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911392945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:07,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:07,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:07,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379337316] [2024-06-03 20:07:07,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:07,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:07,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:07,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:07,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:07,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:07,676 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) [2024-06-03 20:07:07,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:07,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:07,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:08,154 INFO L124 PetriNetUnfolderBase]: 562/1086 cut-off events. [2024-06-03 20:07:08,154 INFO L125 PetriNetUnfolderBase]: For 190235/190235 co-relation queries the response was YES. [2024-06-03 20:07:08,159 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. [2024-06-03 20:07:08,161 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 36 changer transitions 0/208 dead transitions. [2024-06-03 20:07:08,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 208 transitions, 2312 flow [2024-06-03 20:07:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:08,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 20:07:08,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-03 20:07:08,162 INFO L175 Difference]: Start difference. First operand has 255 places, 185 transitions, 1586 flow. Second operand 11 states and 134 transitions. [2024-06-03 20:07:08,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 208 transitions, 2312 flow [2024-06-03 20:07:08,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 208 transitions, 2179 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-03 20:07:08,510 INFO L231 Difference]: Finished difference. Result has 254 places, 187 transitions, 1601 flow [2024-06-03 20:07:08,510 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} [2024-06-03 20:07:08,511 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 20:07:08,511 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 187 transitions, 1601 flow [2024-06-03 20:07:08,511 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) [2024-06-03 20:07:08,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:08,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:08,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-03 20:07:08,511 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)] === [2024-06-03 20:07:08,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2133441095, now seen corresponding path program 18 times [2024-06-03 20:07:08,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:08,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224138043] [2024-06-03 20:07:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:08,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:09,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:09,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:09,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224138043] [2024-06-03 20:07:09,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224138043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:09,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:09,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050971658] [2024-06-03 20:07:09,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:09,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:09,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:09,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:09,992 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) [2024-06-03 20:07:09,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:09,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:09,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:10,471 INFO L124 PetriNetUnfolderBase]: 582/1130 cut-off events. [2024-06-03 20:07:10,471 INFO L125 PetriNetUnfolderBase]: For 228338/228338 co-relation queries the response was YES. [2024-06-03 20:07:10,476 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. [2024-06-03 20:07:10,478 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 26 changer transitions 7/207 dead transitions. [2024-06-03 20:07:10,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 207 transitions, 2115 flow [2024-06-03 20:07:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:07:10,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:07:10,479 INFO L175 Difference]: Start difference. First operand has 254 places, 187 transitions, 1601 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:07:10,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 207 transitions, 2115 flow [2024-06-03 20:07:10,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 207 transitions, 2029 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-03 20:07:10,842 INFO L231 Difference]: Finished difference. Result has 258 places, 185 transitions, 1589 flow [2024-06-03 20:07:10,842 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} [2024-06-03 20:07:10,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 20:07:10,842 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 185 transitions, 1589 flow [2024-06-03 20:07:10,842 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) [2024-06-03 20:07:10,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:10,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:10,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-03 20:07:10,843 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)] === [2024-06-03 20:07:10,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1446473027, now seen corresponding path program 19 times [2024-06-03 20:07:10,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:10,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509410235] [2024-06-03 20:07:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:10,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:12,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:12,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509410235] [2024-06-03 20:07:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509410235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:12,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:12,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:12,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432835124] [2024-06-03 20:07:12,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:12,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:12,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:12,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:12,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:12,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:12,187 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) [2024-06-03 20:07:12,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:12,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:12,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:12,623 INFO L124 PetriNetUnfolderBase]: 562/1090 cut-off events. [2024-06-03 20:07:12,623 INFO L125 PetriNetUnfolderBase]: For 195185/195185 co-relation queries the response was YES. [2024-06-03 20:07:12,629 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. [2024-06-03 20:07:12,632 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 182 selfloop transitions, 16 changer transitions 0/200 dead transitions. [2024-06-03 20:07:12,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 200 transitions, 2053 flow [2024-06-03 20:07:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:12,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 20:07:12,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-03 20:07:12,632 INFO L175 Difference]: Start difference. First operand has 258 places, 185 transitions, 1589 flow. Second operand 11 states and 115 transitions. [2024-06-03 20:07:12,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 200 transitions, 2053 flow [2024-06-03 20:07:13,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 200 transitions, 1966 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-03 20:07:13,016 INFO L231 Difference]: Finished difference. Result has 259 places, 186 transitions, 1578 flow [2024-06-03 20:07:13,016 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} [2024-06-03 20:07:13,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-03 20:07:13,016 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 186 transitions, 1578 flow [2024-06-03 20:07:13,017 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) [2024-06-03 20:07:13,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:13,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:13,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-03 20:07:13,017 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)] === [2024-06-03 20:07:13,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1473567269, now seen corresponding path program 20 times [2024-06-03 20:07:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423626257] [2024-06-03 20:07:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:13,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:14,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423626257] [2024-06-03 20:07:14,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423626257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:14,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:14,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:14,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702972661] [2024-06-03 20:07:14,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:14,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:14,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:14,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:14,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:14,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:14,832 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) [2024-06-03 20:07:14,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:14,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:14,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:15,275 INFO L124 PetriNetUnfolderBase]: 559/1085 cut-off events. [2024-06-03 20:07:15,275 INFO L125 PetriNetUnfolderBase]: For 191263/191263 co-relation queries the response was YES. [2024-06-03 20:07:15,283 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. [2024-06-03 20:07:15,286 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 27 changer transitions 0/202 dead transitions. [2024-06-03 20:07:15,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 202 transitions, 2022 flow [2024-06-03 20:07:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 20:07:15,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-03 20:07:15,287 INFO L175 Difference]: Start difference. First operand has 259 places, 186 transitions, 1578 flow. Second operand 11 states and 126 transitions. [2024-06-03 20:07:15,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 202 transitions, 2022 flow [2024-06-03 20:07:15,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 202 transitions, 1956 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-03 20:07:15,739 INFO L231 Difference]: Finished difference. Result has 261 places, 186 transitions, 1570 flow [2024-06-03 20:07:15,739 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} [2024-06-03 20:07:15,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-03 20:07:15,739 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 186 transitions, 1570 flow [2024-06-03 20:07:15,739 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) [2024-06-03 20:07:15,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:15,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:15,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-03 20:07:15,740 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)] === [2024-06-03 20:07:15,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:15,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1479816435, now seen corresponding path program 30 times [2024-06-03 20:07:15,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:15,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219862022] [2024-06-03 20:07:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:15,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:17,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:17,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219862022] [2024-06-03 20:07:17,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219862022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:17,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:17,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:17,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400719507] [2024-06-03 20:07:17,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:17,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:17,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:17,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:17,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:17,880 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) [2024-06-03 20:07:17,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:17,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:17,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:18,630 INFO L124 PetriNetUnfolderBase]: 575/1121 cut-off events. [2024-06-03 20:07:18,630 INFO L125 PetriNetUnfolderBase]: For 226815/226815 co-relation queries the response was YES. [2024-06-03 20:07:18,636 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. [2024-06-03 20:07:18,638 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 23 changer transitions 16/208 dead transitions. [2024-06-03 20:07:18,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 208 transitions, 2060 flow [2024-06-03 20:07:18,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:07:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:07:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 20:07:18,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 20:07:18,639 INFO L175 Difference]: Start difference. First operand has 261 places, 186 transitions, 1570 flow. Second operand 12 states and 141 transitions. [2024-06-03 20:07:18,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 208 transitions, 2060 flow [2024-06-03 20:07:19,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 208 transitions, 1978 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-03 20:07:19,047 INFO L231 Difference]: Finished difference. Result has 263 places, 180 transitions, 1493 flow [2024-06-03 20:07:19,048 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} [2024-06-03 20:07:19,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-03 20:07:19,048 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 180 transitions, 1493 flow [2024-06-03 20:07:19,048 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) [2024-06-03 20:07:19,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:19,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:19,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-03 20:07:19,048 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)] === [2024-06-03 20:07:19,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:19,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1473560325, now seen corresponding path program 31 times [2024-06-03 20:07:19,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:19,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092760107] [2024-06-03 20:07:19,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:19,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:21,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:21,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092760107] [2024-06-03 20:07:21,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092760107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:21,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:21,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242655885] [2024-06-03 20:07:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:21,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:21,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:21,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:21,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:21,358 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) [2024-06-03 20:07:21,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:21,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:21,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:21,921 INFO L124 PetriNetUnfolderBase]: 555/1089 cut-off events. [2024-06-03 20:07:21,921 INFO L125 PetriNetUnfolderBase]: For 231400/231400 co-relation queries the response was YES. [2024-06-03 20:07:21,927 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. [2024-06-03 20:07:21,930 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 166 selfloop transitions, 22 changer transitions 11/201 dead transitions. [2024-06-03 20:07:21,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 201 transitions, 1965 flow [2024-06-03 20:07:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:07:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:07:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-03 20:07:21,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-03 20:07:21,930 INFO L175 Difference]: Start difference. First operand has 263 places, 180 transitions, 1493 flow. Second operand 12 states and 137 transitions. [2024-06-03 20:07:21,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 201 transitions, 1965 flow [2024-06-03 20:07:22,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 201 transitions, 1909 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-03 20:07:22,313 INFO L231 Difference]: Finished difference. Result has 257 places, 177 transitions, 1458 flow [2024-06-03 20:07:22,313 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} [2024-06-03 20:07:22,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-03 20:07:22,313 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 177 transitions, 1458 flow [2024-06-03 20:07:22,313 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) [2024-06-03 20:07:22,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:22,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:22,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-03 20:07:22,314 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)] === [2024-06-03 20:07:22,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1473382695, now seen corresponding path program 32 times [2024-06-03 20:07:22,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:22,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480885202] [2024-06-03 20:07:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:22,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:23,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:23,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480885202] [2024-06-03 20:07:23,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480885202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:23,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:23,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:23,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725838723] [2024-06-03 20:07:23,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:23,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:23,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:23,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:23,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:23,893 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) [2024-06-03 20:07:23,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:23,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:23,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:24,456 INFO L124 PetriNetUnfolderBase]: 541/1067 cut-off events. [2024-06-03 20:07:24,456 INFO L125 PetriNetUnfolderBase]: For 208628/208628 co-relation queries the response was YES. [2024-06-03 20:07:24,461 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. [2024-06-03 20:07:24,463 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 23 changer transitions 7/203 dead transitions. [2024-06-03 20:07:24,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 203 transitions, 2134 flow [2024-06-03 20:07:24,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:07:24,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:07:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-03 20:07:24,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-03 20:07:24,463 INFO L175 Difference]: Start difference. First operand has 257 places, 177 transitions, 1458 flow. Second operand 12 states and 143 transitions. [2024-06-03 20:07:24,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 203 transitions, 2134 flow [2024-06-03 20:07:24,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 203 transitions, 2082 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:07:24,828 INFO L231 Difference]: Finished difference. Result has 255 places, 175 transitions, 1444 flow [2024-06-03 20:07:24,829 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} [2024-06-03 20:07:24,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-03 20:07:24,829 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 175 transitions, 1444 flow [2024-06-03 20:07:24,829 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) [2024-06-03 20:07:24,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:24,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:24,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-03 20:07:24,829 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)] === [2024-06-03 20:07:24,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:24,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1933386041, now seen corresponding path program 21 times [2024-06-03 20:07:24,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:24,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531362825] [2024-06-03 20:07:24,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:24,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:26,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:26,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531362825] [2024-06-03 20:07:26,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531362825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:26,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:26,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:07:26,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760921057] [2024-06-03 20:07:26,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:26,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:07:26,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:26,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:07:26,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:07:26,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:26,350 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) [2024-06-03 20:07:26,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:26,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:26,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:26,732 INFO L124 PetriNetUnfolderBase]: 527/1037 cut-off events. [2024-06-03 20:07:26,732 INFO L125 PetriNetUnfolderBase]: For 182368/182368 co-relation queries the response was YES. [2024-06-03 20:07:26,737 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. [2024-06-03 20:07:26,740 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 172 selfloop transitions, 16 changer transitions 0/190 dead transitions. [2024-06-03 20:07:26,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 190 transitions, 1892 flow [2024-06-03 20:07:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:26,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 20:07:26,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-03 20:07:26,741 INFO L175 Difference]: Start difference. First operand has 255 places, 175 transitions, 1444 flow. Second operand 11 states and 116 transitions. [2024-06-03 20:07:26,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 190 transitions, 1892 flow [2024-06-03 20:07:27,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 190 transitions, 1847 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 20:07:27,088 INFO L231 Difference]: Finished difference. Result has 254 places, 176 transitions, 1475 flow [2024-06-03 20:07:27,089 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} [2024-06-03 20:07:27,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 20:07:27,089 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 176 transitions, 1475 flow [2024-06-03 20:07:27,089 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) [2024-06-03 20:07:27,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:27,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:27,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-03 20:07:27,089 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)] === [2024-06-03 20:07:27,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2139927845, now seen corresponding path program 22 times [2024-06-03 20:07:27,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:27,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301572291] [2024-06-03 20:07:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:28,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:28,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301572291] [2024-06-03 20:07:28,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301572291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:28,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:28,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:28,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099180050] [2024-06-03 20:07:28,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:28,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:28,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:28,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:28,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:28,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:28,697 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) [2024-06-03 20:07:28,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:28,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:28,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:29,153 INFO L124 PetriNetUnfolderBase]: 531/1045 cut-off events. [2024-06-03 20:07:29,153 INFO L125 PetriNetUnfolderBase]: For 179545/179545 co-relation queries the response was YES. [2024-06-03 20:07:29,159 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. [2024-06-03 20:07:29,161 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 27 changer transitions 0/192 dead transitions. [2024-06-03 20:07:29,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 192 transitions, 1935 flow [2024-06-03 20:07:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 20:07:29,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 20:07:29,162 INFO L175 Difference]: Start difference. First operand has 254 places, 176 transitions, 1475 flow. Second operand 11 states and 124 transitions. [2024-06-03 20:07:29,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 192 transitions, 1935 flow [2024-06-03 20:07:29,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 192 transitions, 1869 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-03 20:07:29,520 INFO L231 Difference]: Finished difference. Result has 256 places, 177 transitions, 1509 flow [2024-06-03 20:07:29,521 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} [2024-06-03 20:07:29,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-03 20:07:29,521 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 177 transitions, 1509 flow [2024-06-03 20:07:29,521 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) [2024-06-03 20:07:29,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:29,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:29,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-03 20:07:29,521 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)] === [2024-06-03 20:07:29,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash -30161007, now seen corresponding path program 33 times [2024-06-03 20:07:29,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:29,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565026793] [2024-06-03 20:07:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:29,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:30,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:30,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565026793] [2024-06-03 20:07:30,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565026793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:30,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:30,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:30,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772516890] [2024-06-03 20:07:30,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:30,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:30,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:30,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:30,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:31,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:31,081 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) [2024-06-03 20:07:31,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:31,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:31,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:31,578 INFO L124 PetriNetUnfolderBase]: 518/1022 cut-off events. [2024-06-03 20:07:31,578 INFO L125 PetriNetUnfolderBase]: For 175735/175735 co-relation queries the response was YES. [2024-06-03 20:07:31,583 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. [2024-06-03 20:07:31,586 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 163 selfloop transitions, 20 changer transitions 13/198 dead transitions. [2024-06-03 20:07:31,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 198 transitions, 1975 flow [2024-06-03 20:07:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:07:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:07:31,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-03 20:07:31,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-03 20:07:31,587 INFO L175 Difference]: Start difference. First operand has 256 places, 177 transitions, 1509 flow. Second operand 12 states and 137 transitions. [2024-06-03 20:07:31,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 198 transitions, 1975 flow [2024-06-03 20:07:31,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 198 transitions, 1885 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-03 20:07:31,913 INFO L231 Difference]: Finished difference. Result has 259 places, 173 transitions, 1427 flow [2024-06-03 20:07:31,913 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} [2024-06-03 20:07:31,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-03 20:07:31,913 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 173 transitions, 1427 flow [2024-06-03 20:07:31,914 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) [2024-06-03 20:07:31,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:31,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:31,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-03 20:07:31,914 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)] === [2024-06-03 20:07:31,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:31,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1709750999, now seen corresponding path program 23 times [2024-06-03 20:07:31,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:31,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422283235] [2024-06-03 20:07:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:31,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:33,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:33,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422283235] [2024-06-03 20:07:33,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422283235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:33,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:33,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069482869] [2024-06-03 20:07:33,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:33,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:33,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:33,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:33,487 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) [2024-06-03 20:07:33,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:33,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:33,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:33,945 INFO L124 PetriNetUnfolderBase]: 497/979 cut-off events. [2024-06-03 20:07:33,945 INFO L125 PetriNetUnfolderBase]: For 148843/148843 co-relation queries the response was YES. [2024-06-03 20:07:33,950 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. [2024-06-03 20:07:33,952 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 20 changer transitions 0/189 dead transitions. [2024-06-03 20:07:33,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 189 transitions, 1881 flow [2024-06-03 20:07:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 20:07:33,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 20:07:33,953 INFO L175 Difference]: Start difference. First operand has 259 places, 173 transitions, 1427 flow. Second operand 11 states and 120 transitions. [2024-06-03 20:07:33,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 189 transitions, 1881 flow [2024-06-03 20:07:34,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 189 transitions, 1837 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 20:07:34,248 INFO L231 Difference]: Finished difference. Result has 254 places, 174 transitions, 1471 flow [2024-06-03 20:07:34,249 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} [2024-06-03 20:07:34,249 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 20:07:34,249 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 174 transitions, 1471 flow [2024-06-03 20:07:34,249 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) [2024-06-03 20:07:34,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:34,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:34,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-03 20:07:34,249 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)] === [2024-06-03 20:07:34,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1925054171, now seen corresponding path program 24 times [2024-06-03 20:07:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322974505] [2024-06-03 20:07:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:35,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:35,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322974505] [2024-06-03 20:07:35,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322974505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:35,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:35,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:35,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056586420] [2024-06-03 20:07:35,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:35,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:35,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:35,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:35,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:35,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:35,985 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) [2024-06-03 20:07:35,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:35,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:35,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:36,556 INFO L124 PetriNetUnfolderBase]: 501/987 cut-off events. [2024-06-03 20:07:36,557 INFO L125 PetriNetUnfolderBase]: For 149860/149860 co-relation queries the response was YES. [2024-06-03 20:07:36,562 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. [2024-06-03 20:07:36,564 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 171 selfloop transitions, 18 changer transitions 0/191 dead transitions. [2024-06-03 20:07:36,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 191 transitions, 1931 flow [2024-06-03 20:07:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:07:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:07:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-03 20:07:36,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-03 20:07:36,565 INFO L175 Difference]: Start difference. First operand has 254 places, 174 transitions, 1471 flow. Second operand 12 states and 127 transitions. [2024-06-03 20:07:36,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 191 transitions, 1931 flow [2024-06-03 20:07:36,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 191 transitions, 1853 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-03 20:07:36,912 INFO L231 Difference]: Finished difference. Result has 257 places, 175 transitions, 1479 flow [2024-06-03 20:07:36,912 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} [2024-06-03 20:07:36,912 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-03 20:07:36,912 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 175 transitions, 1479 flow [2024-06-03 20:07:36,912 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) [2024-06-03 20:07:36,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:36,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:36,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-03 20:07:36,913 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)] === [2024-06-03 20:07:36,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:36,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1687541177, now seen corresponding path program 25 times [2024-06-03 20:07:36,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:36,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291035347] [2024-06-03 20:07:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:36,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:38,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:38,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291035347] [2024-06-03 20:07:38,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291035347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:38,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:38,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:38,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970438720] [2024-06-03 20:07:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:38,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:38,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:38,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:38,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:38,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:38,507 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) [2024-06-03 20:07:38,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:38,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:38,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:38,981 INFO L124 PetriNetUnfolderBase]: 507/1005 cut-off events. [2024-06-03 20:07:38,981 INFO L125 PetriNetUnfolderBase]: For 176303/176303 co-relation queries the response was YES. [2024-06-03 20:07:38,987 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. [2024-06-03 20:07:38,989 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 158 selfloop transitions, 18 changer transitions 16/194 dead transitions. [2024-06-03 20:07:38,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 194 transitions, 1973 flow [2024-06-03 20:07:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:38,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-03 20:07:38,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-03 20:07:38,990 INFO L175 Difference]: Start difference. First operand has 257 places, 175 transitions, 1479 flow. Second operand 11 states and 124 transitions. [2024-06-03 20:07:38,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 194 transitions, 1973 flow [2024-06-03 20:07:39,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 194 transitions, 1897 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-03 20:07:39,334 INFO L231 Difference]: Finished difference. Result has 258 places, 168 transitions, 1396 flow [2024-06-03 20:07:39,334 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} [2024-06-03 20:07:39,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 20:07:39,334 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 168 transitions, 1396 flow [2024-06-03 20:07:39,334 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) [2024-06-03 20:07:39,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:39,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:39,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-03 20:07:39,335 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)] === [2024-06-03 20:07:39,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:39,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1710039299, now seen corresponding path program 26 times [2024-06-03 20:07:39,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:39,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708295521] [2024-06-03 20:07:39,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:39,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:40,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:40,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708295521] [2024-06-03 20:07:40,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708295521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:40,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:40,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257168948] [2024-06-03 20:07:40,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:40,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:40,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:40,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:40,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:40,768 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) [2024-06-03 20:07:40,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:40,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:40,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:41,127 INFO L124 PetriNetUnfolderBase]: 470/938 cut-off events. [2024-06-03 20:07:41,127 INFO L125 PetriNetUnfolderBase]: For 139717/139717 co-relation queries the response was YES. [2024-06-03 20:07:41,132 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. [2024-06-03 20:07:41,134 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 20 changer transitions 0/184 dead transitions. [2024-06-03 20:07:41,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 184 transitions, 1842 flow [2024-06-03 20:07:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:41,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 20:07:41,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-03 20:07:41,135 INFO L175 Difference]: Start difference. First operand has 258 places, 168 transitions, 1396 flow. Second operand 11 states and 120 transitions. [2024-06-03 20:07:41,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 184 transitions, 1842 flow [2024-06-03 20:07:41,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 184 transitions, 1804 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 20:07:41,449 INFO L231 Difference]: Finished difference. Result has 256 places, 169 transitions, 1450 flow [2024-06-03 20:07:41,449 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} [2024-06-03 20:07:41,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-03 20:07:41,449 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 169 transitions, 1450 flow [2024-06-03 20:07:41,449 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) [2024-06-03 20:07:41,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:41,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-03 20:07:41,449 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)] === [2024-06-03 20:07:41,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1687532807, now seen corresponding path program 27 times [2024-06-03 20:07:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:41,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057880998] [2024-06-03 20:07:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:42,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057880998] [2024-06-03 20:07:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057880998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:42,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:42,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:42,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558825495] [2024-06-03 20:07:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:42,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:42,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:42,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:42,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:42,824 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) [2024-06-03 20:07:42,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:42,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:42,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:43,222 INFO L124 PetriNetUnfolderBase]: 482/966 cut-off events. [2024-06-03 20:07:43,222 INFO L125 PetriNetUnfolderBase]: For 162367/162367 co-relation queries the response was YES. [2024-06-03 20:07:43,228 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. [2024-06-03 20:07:43,230 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 156 selfloop transitions, 14 changer transitions 14/186 dead transitions. [2024-06-03 20:07:43,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 186 transitions, 1910 flow [2024-06-03 20:07:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 20:07:43,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-03 20:07:43,231 INFO L175 Difference]: Start difference. First operand has 256 places, 169 transitions, 1450 flow. Second operand 11 states and 119 transitions. [2024-06-03 20:07:43,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 186 transitions, 1910 flow [2024-06-03 20:07:43,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 186 transitions, 1828 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-03 20:07:43,545 INFO L231 Difference]: Finished difference. Result has 258 places, 164 transitions, 1365 flow [2024-06-03 20:07:43,545 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} [2024-06-03 20:07:43,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-03 20:07:43,546 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 164 transitions, 1365 flow [2024-06-03 20:07:43,546 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) [2024-06-03 20:07:43,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:43,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:43,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-03 20:07:43,546 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)] === [2024-06-03 20:07:43,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:43,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2139936215, now seen corresponding path program 28 times [2024-06-03 20:07:43,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:43,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826615663] [2024-06-03 20:07:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:43,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:45,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:45,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826615663] [2024-06-03 20:07:45,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826615663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:45,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:45,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:45,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301489964] [2024-06-03 20:07:45,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:45,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:45,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:45,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:45,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:45,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:45,497 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) [2024-06-03 20:07:45,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:45,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:45,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:45,934 INFO L124 PetriNetUnfolderBase]: 461/923 cut-off events. [2024-06-03 20:07:45,934 INFO L125 PetriNetUnfolderBase]: For 143434/143434 co-relation queries the response was YES. [2024-06-03 20:07:45,939 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. [2024-06-03 20:07:45,941 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 153 selfloop transitions, 25 changer transitions 0/180 dead transitions. [2024-06-03 20:07:45,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 180 transitions, 1807 flow [2024-06-03 20:07:45,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 20:07:45,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-03 20:07:45,942 INFO L175 Difference]: Start difference. First operand has 258 places, 164 transitions, 1365 flow. Second operand 11 states and 123 transitions. [2024-06-03 20:07:45,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 180 transitions, 1807 flow [2024-06-03 20:07:46,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 180 transitions, 1743 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:07:46,239 INFO L231 Difference]: Finished difference. Result has 252 places, 165 transitions, 1405 flow [2024-06-03 20:07:46,239 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} [2024-06-03 20:07:46,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-03 20:07:46,239 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 165 transitions, 1405 flow [2024-06-03 20:07:46,240 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) [2024-06-03 20:07:46,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:46,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:46,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-03 20:07:46,241 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)] === [2024-06-03 20:07:46,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:46,241 INFO L85 PathProgramCache]: Analyzing trace with hash -409827869, now seen corresponding path program 34 times [2024-06-03 20:07:46,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:46,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763393947] [2024-06-03 20:07:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:46,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:47,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:47,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763393947] [2024-06-03 20:07:47,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763393947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:47,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:47,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 20:07:47,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998247105] [2024-06-03 20:07:47,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:47,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 20:07:47,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 20:07:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 20:07:47,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:47,532 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) [2024-06-03 20:07:47,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:47,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:47,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:47,959 INFO L124 PetriNetUnfolderBase]: 477/959 cut-off events. [2024-06-03 20:07:47,959 INFO L125 PetriNetUnfolderBase]: For 168896/168896 co-relation queries the response was YES. [2024-06-03 20:07:47,965 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. [2024-06-03 20:07:47,967 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 45 changer transitions 14/184 dead transitions. [2024-06-03 20:07:47,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 184 transitions, 1835 flow [2024-06-03 20:07:47,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:47,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 20:07:47,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-03 20:07:47,968 INFO L175 Difference]: Start difference. First operand has 252 places, 165 transitions, 1405 flow. Second operand 11 states and 133 transitions. [2024-06-03 20:07:47,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 184 transitions, 1835 flow [2024-06-03 20:07:48,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 184 transitions, 1741 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 20:07:48,253 INFO L231 Difference]: Finished difference. Result has 254 places, 159 transitions, 1361 flow [2024-06-03 20:07:48,253 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} [2024-06-03 20:07:48,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-03 20:07:48,254 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 159 transitions, 1361 flow [2024-06-03 20:07:48,254 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) [2024-06-03 20:07:48,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:48,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:48,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-03 20:07:48,255 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)] === [2024-06-03 20:07:48,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash -237092025, now seen corresponding path program 29 times [2024-06-03 20:07:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:48,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209084760] [2024-06-03 20:07:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:48,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:50,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209084760] [2024-06-03 20:07:50,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209084760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:50,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:50,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:50,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926092937] [2024-06-03 20:07:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:50,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:50,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:50,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:50,647 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) [2024-06-03 20:07:50,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:50,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:50,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:51,186 INFO L124 PetriNetUnfolderBase]: 447/901 cut-off events. [2024-06-03 20:07:51,186 INFO L125 PetriNetUnfolderBase]: For 140475/140475 co-relation queries the response was YES. [2024-06-03 20:07:51,191 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. [2024-06-03 20:07:51,193 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 40 changer transitions 0/177 dead transitions. [2024-06-03 20:07:51,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 177 transitions, 2031 flow [2024-06-03 20:07:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:07:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:07:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 20:07:51,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-03 20:07:51,195 INFO L175 Difference]: Start difference. First operand has 254 places, 159 transitions, 1361 flow. Second operand 11 states and 128 transitions. [2024-06-03 20:07:51,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 177 transitions, 2031 flow [2024-06-03 20:07:51,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 177 transitions, 1919 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-03 20:07:51,490 INFO L231 Difference]: Finished difference. Result has 248 places, 161 transitions, 1443 flow [2024-06-03 20:07:51,490 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} [2024-06-03 20:07:51,491 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-03 20:07:51,491 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 161 transitions, 1443 flow [2024-06-03 20:07:51,491 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) [2024-06-03 20:07:51,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:51,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:51,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-03 20:07:51,491 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)] === [2024-06-03 20:07:51,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash -243767069, now seen corresponding path program 35 times [2024-06-03 20:07:51,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:51,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752102858] [2024-06-03 20:07:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:53,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:53,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:53,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752102858] [2024-06-03 20:07:53,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752102858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:53,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:53,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:53,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614495532] [2024-06-03 20:07:53,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:53,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:53,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:53,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:53,218 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) [2024-06-03 20:07:53,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:53,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:53,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:53,766 INFO L124 PetriNetUnfolderBase]: 463/937 cut-off events. [2024-06-03 20:07:53,766 INFO L125 PetriNetUnfolderBase]: For 161345/161345 co-relation queries the response was YES. [2024-06-03 20:07:53,771 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. [2024-06-03 20:07:53,773 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 43 changer transitions 11/183 dead transitions. [2024-06-03 20:07:53,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 183 transitions, 1881 flow [2024-06-03 20:07:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:07:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:07:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 20:07:53,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-03 20:07:53,774 INFO L175 Difference]: Start difference. First operand has 248 places, 161 transitions, 1443 flow. Second operand 12 states and 145 transitions. [2024-06-03 20:07:53,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 183 transitions, 1881 flow [2024-06-03 20:07:54,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 183 transitions, 1749 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-03 20:07:54,082 INFO L231 Difference]: Finished difference. Result has 252 places, 158 transitions, 1379 flow [2024-06-03 20:07:54,082 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} [2024-06-03 20:07:54,082 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-03 20:07:54,082 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 158 transitions, 1379 flow [2024-06-03 20:07:54,082 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) [2024-06-03 20:07:54,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:54,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:54,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-03 20:07:54,082 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)] === [2024-06-03 20:07:54,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1740886331, now seen corresponding path program 36 times [2024-06-03 20:07:54,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:54,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057103794] [2024-06-03 20:07:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:54,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:55,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:55,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057103794] [2024-06-03 20:07:55,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057103794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:55,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:55,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:55,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772491478] [2024-06-03 20:07:55,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:55,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:55,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:55,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:55,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:55,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:55,774 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) [2024-06-03 20:07:55,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:55,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:55,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:56,310 INFO L124 PetriNetUnfolderBase]: 455/925 cut-off events. [2024-06-03 20:07:56,310 INFO L125 PetriNetUnfolderBase]: For 163297/163297 co-relation queries the response was YES. [2024-06-03 20:07:56,315 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. [2024-06-03 20:07:56,317 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 34 changer transitions 16/179 dead transitions. [2024-06-03 20:07:56,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 179 transitions, 1805 flow [2024-06-03 20:07:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:07:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:07:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-03 20:07:56,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-03 20:07:56,317 INFO L175 Difference]: Start difference. First operand has 252 places, 158 transitions, 1379 flow. Second operand 12 states and 141 transitions. [2024-06-03 20:07:56,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 179 transitions, 1805 flow [2024-06-03 20:07:56,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 179 transitions, 1696 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-03 20:07:56,588 INFO L231 Difference]: Finished difference. Result has 250 places, 152 transitions, 1301 flow [2024-06-03 20:07:56,589 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} [2024-06-03 20:07:56,589 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-03 20:07:56,589 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 152 transitions, 1301 flow [2024-06-03 20:07:56,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:07:56,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:56,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:56,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-03 20:07:56,589 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)] === [2024-06-03 20:07:56,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:56,589 INFO L85 PathProgramCache]: Analyzing trace with hash -410005499, now seen corresponding path program 37 times [2024-06-03 20:07:56,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:56,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037452108] [2024-06-03 20:07:56,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:56,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:07:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:07:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:07:58,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037452108] [2024-06-03 20:07:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037452108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:07:58,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:07:58,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:07:58,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578298234] [2024-06-03 20:07:58,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:07:58,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:07:58,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:07:58,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:07:58,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:07:58,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:07:58,380 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) [2024-06-03 20:07:58,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:07:58,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:07:58,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:07:58,852 INFO L124 PetriNetUnfolderBase]: 431/885 cut-off events. [2024-06-03 20:07:58,852 INFO L125 PetriNetUnfolderBase]: For 155547/155547 co-relation queries the response was YES. [2024-06-03 20:07:58,856 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. [2024-06-03 20:07:58,858 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 36 changer transitions 14/171 dead transitions. [2024-06-03 20:07:58,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 171 transitions, 1697 flow [2024-06-03 20:07:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:07:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:07:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 20:07:58,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-03 20:07:58,858 INFO L175 Difference]: Start difference. First operand has 250 places, 152 transitions, 1301 flow. Second operand 12 states and 135 transitions. [2024-06-03 20:07:58,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 171 transitions, 1697 flow [2024-06-03 20:07:59,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 171 transitions, 1617 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 20:07:59,082 INFO L231 Difference]: Finished difference. Result has 244 places, 147 transitions, 1267 flow [2024-06-03 20:07:59,082 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} [2024-06-03 20:07:59,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-03 20:07:59,083 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 147 transitions, 1267 flow [2024-06-03 20:07:59,083 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) [2024-06-03 20:07:59,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:07:59,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:07:59,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-03 20:07:59,083 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)] === [2024-06-03 20:07:59,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:07:59,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2139690261, now seen corresponding path program 38 times [2024-06-03 20:07:59,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:07:59,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133083214] [2024-06-03 20:07:59,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:07:59,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:07:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:02,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133083214] [2024-06-03 20:08:02,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133083214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:02,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:02,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:08:02,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320969118] [2024-06-03 20:08:02,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:02,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:08:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:02,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:08:02,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:08:02,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:02,918 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) [2024-06-03 20:08:02,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:02,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:02,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:03,599 INFO L124 PetriNetUnfolderBase]: 426/874 cut-off events. [2024-06-03 20:08:03,599 INFO L125 PetriNetUnfolderBase]: For 152222/152222 co-relation queries the response was YES. [2024-06-03 20:08:03,603 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. [2024-06-03 20:08:03,605 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 132 selfloop transitions, 23 changer transitions 11/168 dead transitions. [2024-06-03 20:08:03,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 168 transitions, 1671 flow [2024-06-03 20:08:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:03,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-03 20:08:03,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-03 20:08:03,606 INFO L175 Difference]: Start difference. First operand has 244 places, 147 transitions, 1267 flow. Second operand 12 states and 137 transitions. [2024-06-03 20:08:03,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 168 transitions, 1671 flow [2024-06-03 20:08:03,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 168 transitions, 1591 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:08:03,835 INFO L231 Difference]: Finished difference. Result has 237 places, 144 transitions, 1216 flow [2024-06-03 20:08:03,836 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} [2024-06-03 20:08:03,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-03 20:08:03,836 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 144 transitions, 1216 flow [2024-06-03 20:08:03,836 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) [2024-06-03 20:08:03,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:03,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:03,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-03 20:08:03,836 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)] === [2024-06-03 20:08:03,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:03,836 INFO L85 PathProgramCache]: Analyzing trace with hash -243587145, now seen corresponding path program 30 times [2024-06-03 20:08:03,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:03,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812828410] [2024-06-03 20:08:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:05,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:05,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812828410] [2024-06-03 20:08:05,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812828410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:05,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:05,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:08:05,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173909986] [2024-06-03 20:08:05,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:05,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:08:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:08:05,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:08:05,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:05,932 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) [2024-06-03 20:08:05,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:05,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:05,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:06,357 INFO L124 PetriNetUnfolderBase]: 397/819 cut-off events. [2024-06-03 20:08:06,358 INFO L125 PetriNetUnfolderBase]: For 108497/108497 co-relation queries the response was YES. [2024-06-03 20:08:06,361 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. [2024-06-03 20:08:06,363 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 32 changer transitions 0/159 dead transitions. [2024-06-03 20:08:06,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 159 transitions, 1570 flow [2024-06-03 20:08:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:08:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:08:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 20:08:06,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-03 20:08:06,364 INFO L175 Difference]: Start difference. First operand has 237 places, 144 transitions, 1216 flow. Second operand 11 states and 126 transitions. [2024-06-03 20:08:06,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 159 transitions, 1570 flow [2024-06-03 20:08:06,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 159 transitions, 1488 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-03 20:08:06,545 INFO L231 Difference]: Finished difference. Result has 234 places, 144 transitions, 1202 flow [2024-06-03 20:08:06,545 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} [2024-06-03 20:08:06,545 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-03 20:08:06,545 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 144 transitions, 1202 flow [2024-06-03 20:08:06,545 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) [2024-06-03 20:08:06,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:06,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:06,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-03 20:08:06,546 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)] === [2024-06-03 20:08:06,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:06,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2133256521, now seen corresponding path program 39 times [2024-06-03 20:08:06,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:06,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138920125] [2024-06-03 20:08:06,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:06,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:07,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138920125] [2024-06-03 20:08:07,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138920125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:07,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:07,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:08:07,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789797865] [2024-06-03 20:08:07,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:07,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:08:07,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:07,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:08:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:08:08,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:08,130 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) [2024-06-03 20:08:08,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:08,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:08,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:08,663 INFO L124 PetriNetUnfolderBase]: 438/906 cut-off events. [2024-06-03 20:08:08,663 INFO L125 PetriNetUnfolderBase]: For 157050/157050 co-relation queries the response was YES. [2024-06-03 20:08:08,667 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. [2024-06-03 20:08:08,669 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 21 changer transitions 8/169 dead transitions. [2024-06-03 20:08:08,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 169 transitions, 1788 flow [2024-06-03 20:08:08,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:08,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 20:08:08,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 20:08:08,670 INFO L175 Difference]: Start difference. First operand has 234 places, 144 transitions, 1202 flow. Second operand 12 states and 138 transitions. [2024-06-03 20:08:08,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 169 transitions, 1788 flow [2024-06-03 20:08:08,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 169 transitions, 1722 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-03 20:08:08,919 INFO L231 Difference]: Finished difference. Result has 236 places, 141 transitions, 1161 flow [2024-06-03 20:08:08,919 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} [2024-06-03 20:08:08,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-03 20:08:08,919 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 141 transitions, 1161 flow [2024-06-03 20:08:08,919 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) [2024-06-03 20:08:08,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:08,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:08,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-03 20:08:08,919 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)] === [2024-06-03 20:08:08,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:08,920 INFO L85 PathProgramCache]: Analyzing trace with hash -243771719, now seen corresponding path program 40 times [2024-06-03 20:08:08,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:08,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885809328] [2024-06-03 20:08:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:08,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:10,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:10,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885809328] [2024-06-03 20:08:10,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885809328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:10,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:10,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:08:10,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967540295] [2024-06-03 20:08:10,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:10,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:08:10,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:10,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:08:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:08:10,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:10,668 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) [2024-06-03 20:08:10,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:10,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:10,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:11,147 INFO L124 PetriNetUnfolderBase]: 446/926 cut-off events. [2024-06-03 20:08:11,147 INFO L125 PetriNetUnfolderBase]: For 180822/180822 co-relation queries the response was YES. [2024-06-03 20:08:11,152 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. [2024-06-03 20:08:11,154 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 30 changer transitions 8/167 dead transitions. [2024-06-03 20:08:11,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 167 transitions, 1749 flow [2024-06-03 20:08:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-03 20:08:11,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-03 20:08:11,155 INFO L175 Difference]: Start difference. First operand has 236 places, 141 transitions, 1161 flow. Second operand 12 states and 144 transitions. [2024-06-03 20:08:11,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 167 transitions, 1749 flow [2024-06-03 20:08:11,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 167 transitions, 1695 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 20:08:11,462 INFO L231 Difference]: Finished difference. Result has 233 places, 138 transitions, 1157 flow [2024-06-03 20:08:11,462 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} [2024-06-03 20:08:11,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-03 20:08:11,463 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 138 transitions, 1157 flow [2024-06-03 20:08:11,463 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) [2024-06-03 20:08:11,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:11,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:11,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-03 20:08:11,463 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)] === [2024-06-03 20:08:11,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:11,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1687244507, now seen corresponding path program 31 times [2024-06-03 20:08:11,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:11,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061423391] [2024-06-03 20:08:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:12,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:12,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:12,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061423391] [2024-06-03 20:08:12,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061423391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:12,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:12,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:08:12,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942929811] [2024-06-03 20:08:12,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:12,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:08:12,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:12,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:08:12,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:08:12,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:12,995 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) [2024-06-03 20:08:12,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:12,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:12,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:13,438 INFO L124 PetriNetUnfolderBase]: 424/880 cut-off events. [2024-06-03 20:08:13,438 INFO L125 PetriNetUnfolderBase]: For 146973/146973 co-relation queries the response was YES. [2024-06-03 20:08:13,442 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. [2024-06-03 20:08:13,444 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 133 selfloop transitions, 17 changer transitions 0/152 dead transitions. [2024-06-03 20:08:13,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 152 transitions, 1489 flow [2024-06-03 20:08:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:08:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:08:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 20:08:13,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-03 20:08:13,445 INFO L175 Difference]: Start difference. First operand has 233 places, 138 transitions, 1157 flow. Second operand 11 states and 116 transitions. [2024-06-03 20:08:13,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 152 transitions, 1489 flow [2024-06-03 20:08:13,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 152 transitions, 1425 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:08:13,708 INFO L231 Difference]: Finished difference. Result has 230 places, 138 transitions, 1131 flow [2024-06-03 20:08:13,708 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} [2024-06-03 20:08:13,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-03 20:08:13,708 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 138 transitions, 1131 flow [2024-06-03 20:08:13,708 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) [2024-06-03 20:08:13,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:13,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:13,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-03 20:08:13,709 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)] === [2024-06-03 20:08:13,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1319223817, now seen corresponding path program 41 times [2024-06-03 20:08:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:13,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497368669] [2024-06-03 20:08:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:15,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497368669] [2024-06-03 20:08:15,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497368669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:15,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:15,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:08:15,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537221800] [2024-06-03 20:08:15,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:15,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:08:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:15,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:08:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:08:15,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:15,508 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) [2024-06-03 20:08:15,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:15,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:15,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:16,074 INFO L124 PetriNetUnfolderBase]: 411/857 cut-off events. [2024-06-03 20:08:16,074 INFO L125 PetriNetUnfolderBase]: For 137068/137068 co-relation queries the response was YES. [2024-06-03 20:08:16,077 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. [2024-06-03 20:08:16,079 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 29 changer transitions 11/159 dead transitions. [2024-06-03 20:08:16,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 159 transitions, 1517 flow [2024-06-03 20:08:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 20:08:16,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-03 20:08:16,080 INFO L175 Difference]: Start difference. First operand has 230 places, 138 transitions, 1131 flow. Second operand 12 states and 139 transitions. [2024-06-03 20:08:16,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 159 transitions, 1517 flow [2024-06-03 20:08:16,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 159 transitions, 1308 flow, removed 24 selfloop flow, removed 17 redundant places. [2024-06-03 20:08:16,294 INFO L231 Difference]: Finished difference. Result has 225 places, 135 transitions, 965 flow [2024-06-03 20:08:16,294 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} [2024-06-03 20:08:16,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-03 20:08:16,294 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 135 transitions, 965 flow [2024-06-03 20:08:16,294 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) [2024-06-03 20:08:16,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:16,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:16,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-03 20:08:16,294 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)] === [2024-06-03 20:08:16,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2133434151, now seen corresponding path program 42 times [2024-06-03 20:08:16,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:16,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516025098] [2024-06-03 20:08:16,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:16,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:17,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:17,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516025098] [2024-06-03 20:08:17,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516025098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:17,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:17,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:08:17,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178989679] [2024-06-03 20:08:17,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:17,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:08:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:08:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:08:18,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:18,049 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) [2024-06-03 20:08:18,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:18,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:18,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:18,608 INFO L124 PetriNetUnfolderBase]: 372/784 cut-off events. [2024-06-03 20:08:18,608 INFO L125 PetriNetUnfolderBase]: For 105506/105506 co-relation queries the response was YES. [2024-06-03 20:08:18,611 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. [2024-06-03 20:08:18,612 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 19 changer transitions 11/155 dead transitions. [2024-06-03 20:08:18,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 155 transitions, 1331 flow [2024-06-03 20:08:18,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-03 20:08:18,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-03 20:08:18,613 INFO L175 Difference]: Start difference. First operand has 225 places, 135 transitions, 965 flow. Second operand 12 states and 134 transitions. [2024-06-03 20:08:18,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 155 transitions, 1331 flow [2024-06-03 20:08:18,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 155 transitions, 1267 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:08:18,775 INFO L231 Difference]: Finished difference. Result has 222 places, 131 transitions, 914 flow [2024-06-03 20:08:18,775 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} [2024-06-03 20:08:18,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-03 20:08:18,775 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 131 transitions, 914 flow [2024-06-03 20:08:18,775 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) [2024-06-03 20:08:18,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:18,775 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] [2024-06-03 20:08:18,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-03 20:08:18,776 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)] === [2024-06-03 20:08:18,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash -317337961, now seen corresponding path program 1 times [2024-06-03 20:08:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161264957] [2024-06-03 20:08:18,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:18,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:20,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:20,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161264957] [2024-06-03 20:08:20,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161264957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:20,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:20,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:20,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128784579] [2024-06-03 20:08:20,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:20,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:20,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:20,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:20,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:20,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:20,876 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) [2024-06-03 20:08:20,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:20,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:20,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:21,256 INFO L124 PetriNetUnfolderBase]: 354/754 cut-off events. [2024-06-03 20:08:21,256 INFO L125 PetriNetUnfolderBase]: For 90665/90665 co-relation queries the response was YES. [2024-06-03 20:08:21,259 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. [2024-06-03 20:08:21,261 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 45 changer transitions 12/152 dead transitions. [2024-06-03 20:08:21,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 152 transitions, 1274 flow [2024-06-03 20:08:21,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:21,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-03 20:08:21,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-03 20:08:21,262 INFO L175 Difference]: Start difference. First operand has 222 places, 131 transitions, 914 flow. Second operand 12 states and 138 transitions. [2024-06-03 20:08:21,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 152 transitions, 1274 flow [2024-06-03 20:08:21,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 152 transitions, 1201 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-03 20:08:21,397 INFO L231 Difference]: Finished difference. Result has 217 places, 127 transitions, 916 flow [2024-06-03 20:08:21,397 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} [2024-06-03 20:08:21,398 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-03 20:08:21,398 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 127 transitions, 916 flow [2024-06-03 20:08:21,398 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) [2024-06-03 20:08:21,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:21,398 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] [2024-06-03 20:08:21,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-03 20:08:21,398 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)] === [2024-06-03 20:08:21,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -116248711, now seen corresponding path program 2 times [2024-06-03 20:08:21,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:21,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81242473] [2024-06-03 20:08:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:21,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:23,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81242473] [2024-06-03 20:08:23,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81242473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:23,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:23,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:23,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305865659] [2024-06-03 20:08:23,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:23,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:23,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:23,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:23,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:23,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:23,554 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) [2024-06-03 20:08:23,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:23,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:23,930 INFO L124 PetriNetUnfolderBase]: 330/702 cut-off events. [2024-06-03 20:08:23,930 INFO L125 PetriNetUnfolderBase]: For 69633/69633 co-relation queries the response was YES. [2024-06-03 20:08:23,933 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. [2024-06-03 20:08:23,934 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 89 selfloop transitions, 43 changer transitions 11/145 dead transitions. [2024-06-03 20:08:23,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 145 transitions, 1250 flow [2024-06-03 20:08:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:08:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:08:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 20:08:23,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-03 20:08:23,935 INFO L175 Difference]: Start difference. First operand has 217 places, 127 transitions, 916 flow. Second operand 11 states and 127 transitions. [2024-06-03 20:08:23,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 145 transitions, 1250 flow [2024-06-03 20:08:24,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 145 transitions, 1152 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:08:24,041 INFO L231 Difference]: Finished difference. Result has 210 places, 122 transitions, 880 flow [2024-06-03 20:08:24,041 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} [2024-06-03 20:08:24,042 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-03 20:08:24,042 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 122 transitions, 880 flow [2024-06-03 20:08:24,042 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) [2024-06-03 20:08:24,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:24,042 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] [2024-06-03 20:08:24,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-03 20:08:24,042 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)] === [2024-06-03 20:08:24,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:24,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1175617845, now seen corresponding path program 3 times [2024-06-03 20:08:24,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018885823] [2024-06-03 20:08:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:24,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:26,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018885823] [2024-06-03 20:08:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018885823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:26,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:26,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:26,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478191353] [2024-06-03 20:08:26,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:26,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:26,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:26,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:26,889 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) [2024-06-03 20:08:26,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:26,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:26,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:27,409 INFO L124 PetriNetUnfolderBase]: 302/642 cut-off events. [2024-06-03 20:08:27,409 INFO L125 PetriNetUnfolderBase]: For 48355/48355 co-relation queries the response was YES. [2024-06-03 20:08:27,411 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. [2024-06-03 20:08:27,412 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 34 changer transitions 23/142 dead transitions. [2024-06-03 20:08:27,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 142 transitions, 1212 flow [2024-06-03 20:08:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 20:08:27,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:08:27,412 INFO L175 Difference]: Start difference. First operand has 210 places, 122 transitions, 880 flow. Second operand 12 states and 132 transitions. [2024-06-03 20:08:27,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 142 transitions, 1212 flow [2024-06-03 20:08:27,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 142 transitions, 1116 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-03 20:08:27,484 INFO L231 Difference]: Finished difference. Result has 202 places, 112 transitions, 796 flow [2024-06-03 20:08:27,484 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} [2024-06-03 20:08:27,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-03 20:08:27,484 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 112 transitions, 796 flow [2024-06-03 20:08:27,484 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) [2024-06-03 20:08:27,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:27,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:27,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-03 20:08:27,485 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)] === [2024-06-03 20:08:27,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:27,485 INFO L85 PathProgramCache]: Analyzing trace with hash -255379751, now seen corresponding path program 4 times [2024-06-03 20:08:27,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:27,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367420079] [2024-06-03 20:08:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:27,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:29,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:29,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367420079] [2024-06-03 20:08:29,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367420079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:29,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:29,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:29,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167666890] [2024-06-03 20:08:29,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:29,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:29,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:29,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:29,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:29,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:29,731 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) [2024-06-03 20:08:29,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:29,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:29,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:30,095 INFO L124 PetriNetUnfolderBase]: 284/605 cut-off events. [2024-06-03 20:08:30,095 INFO L125 PetriNetUnfolderBase]: For 43216/43216 co-relation queries the response was YES. [2024-06-03 20:08:30,097 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. [2024-06-03 20:08:30,098 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 22 changer transitions 19/131 dead transitions. [2024-06-03 20:08:30,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 131 transitions, 1102 flow [2024-06-03 20:08:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-03 20:08:30,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-03 20:08:30,098 INFO L175 Difference]: Start difference. First operand has 202 places, 112 transitions, 796 flow. Second operand 12 states and 130 transitions. [2024-06-03 20:08:30,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 131 transitions, 1102 flow [2024-06-03 20:08:30,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 131 transitions, 993 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-03 20:08:30,152 INFO L231 Difference]: Finished difference. Result has 186 places, 105 transitions, 695 flow [2024-06-03 20:08:30,152 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} [2024-06-03 20:08:30,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-03 20:08:30,153 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 105 transitions, 695 flow [2024-06-03 20:08:30,153 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) [2024-06-03 20:08:30,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:30,153 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] [2024-06-03 20:08:30,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-03 20:08:30,153 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)] === [2024-06-03 20:08:30,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:30,153 INFO L85 PathProgramCache]: Analyzing trace with hash -893327225, now seen corresponding path program 5 times [2024-06-03 20:08:30,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:30,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579744983] [2024-06-03 20:08:30,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:30,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:32,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:32,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579744983] [2024-06-03 20:08:32,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579744983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:32,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:32,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895133638] [2024-06-03 20:08:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:32,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:32,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:32,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:32,611 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) [2024-06-03 20:08:32,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:32,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:32,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:32,981 INFO L124 PetriNetUnfolderBase]: 260/557 cut-off events. [2024-06-03 20:08:32,981 INFO L125 PetriNetUnfolderBase]: For 37059/37059 co-relation queries the response was YES. [2024-06-03 20:08:32,983 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. [2024-06-03 20:08:32,984 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 82 selfloop transitions, 22 changer transitions 18/124 dead transitions. [2024-06-03 20:08:32,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 124 transitions, 987 flow [2024-06-03 20:08:32,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:32,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 20:08:32,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-03 20:08:32,985 INFO L175 Difference]: Start difference. First operand has 186 places, 105 transitions, 695 flow. Second operand 12 states and 132 transitions. [2024-06-03 20:08:32,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 124 transitions, 987 flow [2024-06-03 20:08:33,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 124 transitions, 933 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 20:08:33,029 INFO L231 Difference]: Finished difference. Result has 179 places, 98 transitions, 654 flow [2024-06-03 20:08:33,030 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} [2024-06-03 20:08:33,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-03 20:08:33,030 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 98 transitions, 654 flow [2024-06-03 20:08:33,030 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) [2024-06-03 20:08:33,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:33,030 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] [2024-06-03 20:08:33,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-03 20:08:33,030 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)] === [2024-06-03 20:08:33,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:33,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1214207931, now seen corresponding path program 6 times [2024-06-03 20:08:33,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:33,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37695084] [2024-06-03 20:08:33,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:33,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:35,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:35,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37695084] [2024-06-03 20:08:35,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37695084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:35,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:35,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637368999] [2024-06-03 20:08:35,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:35,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:35,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:35,708 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) [2024-06-03 20:08:35,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:35,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:35,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:36,188 INFO L124 PetriNetUnfolderBase]: 244/525 cut-off events. [2024-06-03 20:08:36,188 INFO L125 PetriNetUnfolderBase]: For 34813/34813 co-relation queries the response was YES. [2024-06-03 20:08:36,190 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. [2024-06-03 20:08:36,192 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 12 changer transitions 30/116 dead transitions. [2024-06-03 20:08:36,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 116 transitions, 926 flow [2024-06-03 20:08:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:36,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-03 20:08:36,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-03 20:08:36,193 INFO L175 Difference]: Start difference. First operand has 179 places, 98 transitions, 654 flow. Second operand 12 states and 127 transitions. [2024-06-03 20:08:36,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 116 transitions, 926 flow [2024-06-03 20:08:36,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 116 transitions, 870 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 20:08:36,249 INFO L231 Difference]: Finished difference. Result has 169 places, 83 transitions, 542 flow [2024-06-03 20:08:36,249 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} [2024-06-03 20:08:36,249 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-03 20:08:36,249 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 83 transitions, 542 flow [2024-06-03 20:08:36,250 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) [2024-06-03 20:08:36,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:36,250 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] [2024-06-03 20:08:36,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-03 20:08:36,250 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)] === [2024-06-03 20:08:36,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash 374697735, now seen corresponding path program 7 times [2024-06-03 20:08:36,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:36,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789556404] [2024-06-03 20:08:36,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:36,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:38,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:38,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789556404] [2024-06-03 20:08:38,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789556404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:38,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:38,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:38,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288236262] [2024-06-03 20:08:38,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:38,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:38,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:38,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:38,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:38,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:38,982 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) [2024-06-03 20:08:38,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:38,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:38,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:39,537 INFO L124 PetriNetUnfolderBase]: 234/496 cut-off events. [2024-06-03 20:08:39,537 INFO L125 PetriNetUnfolderBase]: For 39046/39046 co-relation queries the response was YES. [2024-06-03 20:08:39,538 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. [2024-06-03 20:08:39,539 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 23 changer transitions 10/103 dead transitions. [2024-06-03 20:08:39,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 103 transitions, 908 flow [2024-06-03 20:08:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:39,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:39,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-03 20:08:39,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-03 20:08:39,540 INFO L175 Difference]: Start difference. First operand has 169 places, 83 transitions, 542 flow. Second operand 12 states and 129 transitions. [2024-06-03 20:08:39,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 103 transitions, 908 flow [2024-06-03 20:08:39,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 103 transitions, 822 flow, removed 16 selfloop flow, removed 18 redundant places. [2024-06-03 20:08:39,593 INFO L231 Difference]: Finished difference. Result has 144 places, 79 transitions, 501 flow [2024-06-03 20:08:39,593 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} [2024-06-03 20:08:39,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-03 20:08:39,593 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 79 transitions, 501 flow [2024-06-03 20:08:39,593 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) [2024-06-03 20:08:39,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:39,593 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] [2024-06-03 20:08:39,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-03 20:08:39,594 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)] === [2024-06-03 20:08:39,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1038733881, now seen corresponding path program 8 times [2024-06-03 20:08:39,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:39,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906826887] [2024-06-03 20:08:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:39,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:42,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:42,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906826887] [2024-06-03 20:08:42,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906826887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:42,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:42,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:42,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978465469] [2024-06-03 20:08:42,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:42,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:42,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:42,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:42,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:42,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:42,628 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) [2024-06-03 20:08:42,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:42,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:42,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:42,996 INFO L124 PetriNetUnfolderBase]: 207/439 cut-off events. [2024-06-03 20:08:42,997 INFO L125 PetriNetUnfolderBase]: For 22532/22532 co-relation queries the response was YES. [2024-06-03 20:08:42,998 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. [2024-06-03 20:08:42,998 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 55 selfloop transitions, 21 changer transitions 16/94 dead transitions. [2024-06-03 20:08:42,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 94 transitions, 721 flow [2024-06-03 20:08:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-03 20:08:42,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3203125 [2024-06-03 20:08:42,999 INFO L175 Difference]: Start difference. First operand has 144 places, 79 transitions, 501 flow. Second operand 12 states and 123 transitions. [2024-06-03 20:08:42,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 94 transitions, 721 flow [2024-06-03 20:08:43,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 94 transitions, 668 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:08:43,028 INFO L231 Difference]: Finished difference. Result has 139 places, 73 transitions, 462 flow [2024-06-03 20:08:43,028 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} [2024-06-03 20:08:43,028 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-03 20:08:43,028 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 73 transitions, 462 flow [2024-06-03 20:08:43,028 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) [2024-06-03 20:08:43,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:43,028 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] [2024-06-03 20:08:43,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-03 20:08:43,028 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)] === [2024-06-03 20:08:43,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:43,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2097315545, now seen corresponding path program 9 times [2024-06-03 20:08:43,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:43,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122712368] [2024-06-03 20:08:43,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:43,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:44,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:44,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122712368] [2024-06-03 20:08:44,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122712368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:44,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:44,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:08:44,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508888986] [2024-06-03 20:08:44,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:44,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:08:44,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:44,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:08:44,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:08:44,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:44,732 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) [2024-06-03 20:08:44,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:44,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:44,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:45,009 INFO L124 PetriNetUnfolderBase]: 196/414 cut-off events. [2024-06-03 20:08:45,009 INFO L125 PetriNetUnfolderBase]: For 19930/19930 co-relation queries the response was YES. [2024-06-03 20:08:45,010 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. [2024-06-03 20:08:45,011 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 61 selfloop transitions, 13 changer transitions 12/88 dead transitions. [2024-06-03 20:08:45,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 88 transitions, 672 flow [2024-06-03 20:08:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:08:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:08:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 20:08:45,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-03 20:08:45,012 INFO L175 Difference]: Start difference. First operand has 139 places, 73 transitions, 462 flow. Second operand 11 states and 116 transitions. [2024-06-03 20:08:45,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 88 transitions, 672 flow [2024-06-03 20:08:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 88 transitions, 618 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 20:08:45,030 INFO L231 Difference]: Finished difference. Result has 127 places, 69 transitions, 415 flow [2024-06-03 20:08:45,030 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} [2024-06-03 20:08:45,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-03 20:08:45,031 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 69 transitions, 415 flow [2024-06-03 20:08:45,031 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) [2024-06-03 20:08:45,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:45,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:45,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-03 20:08:45,031 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)] === [2024-06-03 20:08:45,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1362705413, now seen corresponding path program 10 times [2024-06-03 20:08:45,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:45,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805373164] [2024-06-03 20:08:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:45,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:47,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:47,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805373164] [2024-06-03 20:08:47,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805373164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:47,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:47,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:47,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35643550] [2024-06-03 20:08:47,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:47,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:47,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:47,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:47,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:47,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:47,528 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) [2024-06-03 20:08:47,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:47,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:47,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:47,912 INFO L124 PetriNetUnfolderBase]: 182/388 cut-off events. [2024-06-03 20:08:47,912 INFO L125 PetriNetUnfolderBase]: For 15878/15878 co-relation queries the response was YES. [2024-06-03 20:08:47,913 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. [2024-06-03 20:08:47,913 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 15 changer transitions 10/86 dead transitions. [2024-06-03 20:08:47,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 86 transitions, 625 flow [2024-06-03 20:08:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:47,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-03 20:08:47,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-03 20:08:47,914 INFO L175 Difference]: Start difference. First operand has 127 places, 69 transitions, 415 flow. Second operand 12 states and 126 transitions. [2024-06-03 20:08:47,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 86 transitions, 625 flow [2024-06-03 20:08:47,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 86 transitions, 591 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 20:08:47,927 INFO L231 Difference]: Finished difference. Result has 122 places, 65 transitions, 394 flow [2024-06-03 20:08:47,927 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} [2024-06-03 20:08:47,927 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-03 20:08:47,928 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 65 transitions, 394 flow [2024-06-03 20:08:47,928 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) [2024-06-03 20:08:47,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:47,928 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] [2024-06-03 20:08:47,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-03 20:08:47,928 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)] === [2024-06-03 20:08:47,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:47,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1256350317, now seen corresponding path program 11 times [2024-06-03 20:08:47,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:47,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373659297] [2024-06-03 20:08:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:49,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:49,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373659297] [2024-06-03 20:08:49,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373659297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:49,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:49,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:49,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052956652] [2024-06-03 20:08:49,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:49,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:49,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:49,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:49,570 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) [2024-06-03 20:08:49,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:49,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:49,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:49,854 INFO L124 PetriNetUnfolderBase]: 170/364 cut-off events. [2024-06-03 20:08:49,854 INFO L125 PetriNetUnfolderBase]: For 14404/14404 co-relation queries the response was YES. [2024-06-03 20:08:49,855 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. [2024-06-03 20:08:49,855 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 9 changer transitions 17/81 dead transitions. [2024-06-03 20:08:49,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 81 transitions, 586 flow [2024-06-03 20:08:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-03 20:08:49,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-03 20:08:49,856 INFO L175 Difference]: Start difference. First operand has 122 places, 65 transitions, 394 flow. Second operand 12 states and 120 transitions. [2024-06-03 20:08:49,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 81 transitions, 586 flow [2024-06-03 20:08:49,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 81 transitions, 548 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-03 20:08:49,868 INFO L231 Difference]: Finished difference. Result has 116 places, 60 transitions, 354 flow [2024-06-03 20:08:49,868 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} [2024-06-03 20:08:49,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-03 20:08:49,869 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 60 transitions, 354 flow [2024-06-03 20:08:49,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:08:49,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:49,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:49,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-03 20:08:49,869 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)] === [2024-06-03 20:08:49,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash -948768639, now seen corresponding path program 12 times [2024-06-03 20:08:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:49,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211619021] [2024-06-03 20:08:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:49,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211619021] [2024-06-03 20:08:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211619021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:51,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:51,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322773221] [2024-06-03 20:08:51,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:51,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:51,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:51,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:51,713 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) [2024-06-03 20:08:51,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:51,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:51,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:52,048 INFO L124 PetriNetUnfolderBase]: 152/330 cut-off events. [2024-06-03 20:08:52,048 INFO L125 PetriNetUnfolderBase]: For 12298/12298 co-relation queries the response was YES. [2024-06-03 20:08:52,049 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. [2024-06-03 20:08:52,050 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 46 selfloop transitions, 6 changer transitions 22/76 dead transitions. [2024-06-03 20:08:52,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 76 transitions, 538 flow [2024-06-03 20:08:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-03 20:08:52,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-03 20:08:52,050 INFO L175 Difference]: Start difference. First operand has 116 places, 60 transitions, 354 flow. Second operand 12 states and 119 transitions. [2024-06-03 20:08:52,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 76 transitions, 538 flow [2024-06-03 20:08:52,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 76 transitions, 510 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 20:08:52,072 INFO L231 Difference]: Finished difference. Result has 108 places, 51 transitions, 287 flow [2024-06-03 20:08:52,072 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} [2024-06-03 20:08:52,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-03 20:08:52,072 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 51 transitions, 287 flow [2024-06-03 20:08:52,072 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) [2024-06-03 20:08:52,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:52,072 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] [2024-06-03 20:08:52,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-03 20:08:52,073 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)] === [2024-06-03 20:08:52,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:52,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2106252845, now seen corresponding path program 13 times [2024-06-03 20:08:52,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:52,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248566491] [2024-06-03 20:08:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:52,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:53,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:53,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248566491] [2024-06-03 20:08:53,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248566491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:53,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:53,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623744585] [2024-06-03 20:08:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:53,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:53,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:53,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:53,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:54,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:54,067 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) [2024-06-03 20:08:54,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:54,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:54,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:54,335 INFO L124 PetriNetUnfolderBase]: 131/287 cut-off events. [2024-06-03 20:08:54,335 INFO L125 PetriNetUnfolderBase]: For 9758/9758 co-relation queries the response was YES. [2024-06-03 20:08:54,336 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. [2024-06-03 20:08:54,336 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 39 selfloop transitions, 10 changer transitions 17/68 dead transitions. [2024-06-03 20:08:54,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 68 transitions, 459 flow [2024-06-03 20:08:54,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:08:54,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:08:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-03 20:08:54,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-03 20:08:54,337 INFO L175 Difference]: Start difference. First operand has 108 places, 51 transitions, 287 flow. Second operand 12 states and 121 transitions. [2024-06-03 20:08:54,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 68 transitions, 459 flow [2024-06-03 20:08:54,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 68 transitions, 431 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 20:08:54,344 INFO L231 Difference]: Finished difference. Result has 96 places, 46 transitions, 264 flow [2024-06-03 20:08:54,344 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} [2024-06-03 20:08:54,345 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-03 20:08:54,345 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 46 transitions, 264 flow [2024-06-03 20:08:54,345 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) [2024-06-03 20:08:54,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:54,345 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] [2024-06-03 20:08:54,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-03 20:08:54,345 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)] === [2024-06-03 20:08:54,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1913254539, now seen corresponding path program 14 times [2024-06-03 20:08:54,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:54,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593827438] [2024-06-03 20:08:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:54,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:57,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:57,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593827438] [2024-06-03 20:08:57,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593827438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:57,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:57,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:08:57,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260561156] [2024-06-03 20:08:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:57,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:08:57,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:57,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:08:57,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:08:57,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:57,248 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) [2024-06-03 20:08:57,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:57,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:57,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:57,775 INFO L124 PetriNetUnfolderBase]: 115/255 cut-off events. [2024-06-03 20:08:57,776 INFO L125 PetriNetUnfolderBase]: For 7579/7579 co-relation queries the response was YES. [2024-06-03 20:08:57,776 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. [2024-06-03 20:08:57,777 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 36 selfloop transitions, 14 changer transitions 9/61 dead transitions. [2024-06-03 20:08:57,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 414 flow [2024-06-03 20:08:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:08:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:08:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 20:08:57,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-03 20:08:57,777 INFO L175 Difference]: Start difference. First operand has 96 places, 46 transitions, 264 flow. Second operand 11 states and 115 transitions. [2024-06-03 20:08:57,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 414 flow [2024-06-03 20:08:57,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 61 transitions, 386 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:08:57,783 INFO L231 Difference]: Finished difference. Result has 88 places, 43 transitions, 252 flow [2024-06-03 20:08:57,783 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} [2024-06-03 20:08:57,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-03 20:08:57,784 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 43 transitions, 252 flow [2024-06-03 20:08:57,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:08:57,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:57,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:08:57,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-03 20:08:57,784 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)] === [2024-06-03 20:08:57,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash 443926327, now seen corresponding path program 15 times [2024-06-03 20:08:57,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:57,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207123050] [2024-06-03 20:08:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:57,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:08:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:08:59,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:08:59,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207123050] [2024-06-03 20:08:59,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207123050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:08:59,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:08:59,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:08:59,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944436879] [2024-06-03 20:08:59,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:08:59,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:08:59,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:08:59,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:08:59,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:08:59,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:08:59,480 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) [2024-06-03 20:08:59,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:08:59,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:08:59,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:08:59,786 INFO L124 PetriNetUnfolderBase]: 105/237 cut-off events. [2024-06-03 20:08:59,786 INFO L125 PetriNetUnfolderBase]: For 6076/6076 co-relation queries the response was YES. [2024-06-03 20:08:59,787 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. [2024-06-03 20:08:59,787 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 34 selfloop transitions, 9 changer transitions 12/57 dead transitions. [2024-06-03 20:08:59,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 57 transitions, 392 flow [2024-06-03 20:08:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:08:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:08:59,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-03 20:08:59,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-03 20:08:59,788 INFO L175 Difference]: Start difference. First operand has 88 places, 43 transitions, 252 flow. Second operand 11 states and 111 transitions. [2024-06-03 20:08:59,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 57 transitions, 392 flow [2024-06-03 20:08:59,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 57 transitions, 358 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 20:08:59,793 INFO L231 Difference]: Finished difference. Result has 84 places, 39 transitions, 217 flow [2024-06-03 20:08:59,793 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} [2024-06-03 20:08:59,793 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-03 20:08:59,793 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 39 transitions, 217 flow [2024-06-03 20:08:59,793 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) [2024-06-03 20:08:59,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:08:59,793 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] [2024-06-03 20:08:59,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-03 20:08:59,794 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)] === [2024-06-03 20:08:59,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:08:59,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1564054133, now seen corresponding path program 16 times [2024-06-03 20:08:59,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:08:59,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039873322] [2024-06-03 20:08:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:08:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:08:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:09:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:09:01,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:09:01,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039873322] [2024-06-03 20:09:01,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039873322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:09:01,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:09:01,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:09:01,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326619258] [2024-06-03 20:09:01,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:09:01,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:09:01,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:09:01,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:09:01,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:09:01,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:09:01,859 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) [2024-06-03 20:09:01,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:09:01,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:09:01,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:09:02,053 INFO L124 PetriNetUnfolderBase]: 91/211 cut-off events. [2024-06-03 20:09:02,053 INFO L125 PetriNetUnfolderBase]: For 5148/5148 co-relation queries the response was YES. [2024-06-03 20:09:02,053 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. [2024-06-03 20:09:02,054 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 6 changer transitions 18/54 dead transitions. [2024-06-03 20:09:02,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 54 transitions, 353 flow [2024-06-03 20:09:02,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:09:02,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:09:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-03 20:09:02,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-03 20:09:02,054 INFO L175 Difference]: Start difference. First operand has 84 places, 39 transitions, 217 flow. Second operand 12 states and 118 transitions. [2024-06-03 20:09:02,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 54 transitions, 353 flow [2024-06-03 20:09:02,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 54 transitions, 321 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 20:09:02,058 INFO L231 Difference]: Finished difference. Result has 78 places, 32 transitions, 167 flow [2024-06-03 20:09:02,058 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} [2024-06-03 20:09:02,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-03 20:09:02,059 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 32 transitions, 167 flow [2024-06-03 20:09:02,059 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) [2024-06-03 20:09:02,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:09:02,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:09:02,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-03 20:09:02,059 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)] === [2024-06-03 20:09:02,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:09:02,059 INFO L85 PathProgramCache]: Analyzing trace with hash 452863627, now seen corresponding path program 17 times [2024-06-03 20:09:02,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:09:02,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479001223] [2024-06-03 20:09:02,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:09:02,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:09:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:09:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:09:03,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:09:03,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479001223] [2024-06-03 20:09:03,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479001223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:09:03,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:09:03,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 20:09:03,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50012270] [2024-06-03 20:09:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:09:03,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 20:09:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:09:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 20:09:03,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 20:09:03,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:09:03,707 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) [2024-06-03 20:09:03,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:09:03,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:09:03,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:09:03,925 INFO L124 PetriNetUnfolderBase]: 79/183 cut-off events. [2024-06-03 20:09:03,925 INFO L125 PetriNetUnfolderBase]: For 4316/4316 co-relation queries the response was YES. [2024-06-03 20:09:03,925 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. [2024-06-03 20:09:03,926 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 23 selfloop transitions, 6 changer transitions 15/46 dead transitions. [2024-06-03 20:09:03,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 46 transitions, 285 flow [2024-06-03 20:09:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 20:09:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 20:09:03,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-03 20:09:03,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-03 20:09:03,926 INFO L175 Difference]: Start difference. First operand has 78 places, 32 transitions, 167 flow. Second operand 11 states and 107 transitions. [2024-06-03 20:09:03,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 46 transitions, 285 flow [2024-06-03 20:09:03,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 46 transitions, 259 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-03 20:09:03,929 INFO L231 Difference]: Finished difference. Result has 65 places, 27 transitions, 135 flow [2024-06-03 20:09:03,929 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} [2024-06-03 20:09:03,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-03 20:09:03,929 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 27 transitions, 135 flow [2024-06-03 20:09:03,929 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) [2024-06-03 20:09:03,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:09:03,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:09:03,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-03 20:09:03,929 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)] === [2024-06-03 20:09:03,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:09:03,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1746811943, now seen corresponding path program 18 times [2024-06-03 20:09:03,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:09:03,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196215583] [2024-06-03 20:09:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:09:03,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:09:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:09:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:09:06,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:09:06,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196215583] [2024-06-03 20:09:06,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196215583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:09:06,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:09:06,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:09:06,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052884478] [2024-06-03 20:09:06,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:09:06,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:09:06,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:09:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:09:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:09:06,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:09:06,633 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) [2024-06-03 20:09:06,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:09:06,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:09:06,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:09:06,895 INFO L124 PetriNetUnfolderBase]: 48/118 cut-off events. [2024-06-03 20:09:06,895 INFO L125 PetriNetUnfolderBase]: For 1518/1518 co-relation queries the response was YES. [2024-06-03 20:09:06,896 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. [2024-06-03 20:09:06,896 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 20 selfloop transitions, 9 changer transitions 10/41 dead transitions. [2024-06-03 20:09:06,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 41 transitions, 243 flow [2024-06-03 20:09:06,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:09:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:09:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-03 20:09:06,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2864583333333333 [2024-06-03 20:09:06,896 INFO L175 Difference]: Start difference. First operand has 65 places, 27 transitions, 135 flow. Second operand 12 states and 110 transitions. [2024-06-03 20:09:06,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 41 transitions, 243 flow [2024-06-03 20:09:06,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 41 transitions, 223 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 20:09:06,898 INFO L231 Difference]: Finished difference. Result has 59 places, 23 transitions, 117 flow [2024-06-03 20:09:06,898 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} [2024-06-03 20:09:06,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-03 20:09:06,898 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 23 transitions, 117 flow [2024-06-03 20:09:06,898 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) [2024-06-03 20:09:06,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:09:06,898 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] [2024-06-03 20:09:06,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-03 20:09:06,898 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)] === [2024-06-03 20:09:06,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:09:06,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1301313385, now seen corresponding path program 19 times [2024-06-03 20:09:06,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:09:06,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994811429] [2024-06-03 20:09:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:09:06,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:09:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:09:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:09:08,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:09:08,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994811429] [2024-06-03 20:09:08,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994811429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:09:08,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:09:08,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-03 20:09:08,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962034027] [2024-06-03 20:09:08,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:09:08,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-03 20:09:08,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:09:08,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-03 20:09:08,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-03 20:09:08,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-03 20:09:08,907 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) [2024-06-03 20:09:08,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:09:08,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-03 20:09:08,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:09:09,148 INFO L124 PetriNetUnfolderBase]: 21/61 cut-off events. [2024-06-03 20:09:09,148 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-06-03 20:09:09,148 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. [2024-06-03 20:09:09,148 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-03 20:09:09,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 31 transitions, 165 flow [2024-06-03 20:09:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 20:09:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 20:09:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 102 transitions. [2024-06-03 20:09:09,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.265625 [2024-06-03 20:09:09,149 INFO L175 Difference]: Start difference. First operand has 59 places, 23 transitions, 117 flow. Second operand 12 states and 102 transitions. [2024-06-03 20:09:09,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 31 transitions, 165 flow [2024-06-03 20:09:09,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 127 flow, removed 1 selfloop flow, removed 19 redundant places. [2024-06-03 20:09:09,149 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-03 20:09:09,149 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} [2024-06-03 20:09:09,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-03 20:09:09,149 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-03 20:09:09,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:09:09,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 20:09:09,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 20:09:09,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 20:09:09,152 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 20:09:09,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-03 20:09:09,153 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] [2024-06-03 20:09:09,155 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:09:09,155 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:09:09,158 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 20:09:09,158 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 20:09:09,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:09:09 BasicIcfg [2024-06-03 20:09:09,159 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:09:09,159 INFO L158 Benchmark]: Toolchain (without parser) took 499254.01ms. Allocated memory was 184.5MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 106.5MB in the beginning and 808.3MB in the end (delta: -701.8MB). Peak memory consumption was 379.4MB. Max. memory is 16.1GB. [2024-06-03 20:09:09,159 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:09:09,160 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 184.5MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:09:09,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.20ms. Allocated memory is still 184.5MB. Free memory was 106.3MB in the beginning and 126.1MB in the end (delta: -19.8MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-06-03 20:09:09,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.84ms. Allocated memory is still 184.5MB. Free memory was 126.1MB in the beginning and 123.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:09:09,160 INFO L158 Benchmark]: Boogie Preprocessor took 39.95ms. Allocated memory is still 184.5MB. Free memory was 123.0MB in the beginning and 119.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 20:09:09,160 INFO L158 Benchmark]: RCFGBuilder took 660.05ms. Allocated memory is still 184.5MB. Free memory was 119.8MB in the beginning and 61.1MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-03 20:09:09,161 INFO L158 Benchmark]: TraceAbstraction took 497937.46ms. Allocated memory was 184.5MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 60.1MB in the beginning and 808.3MB in the end (delta: -748.2MB). Peak memory consumption was 332.6MB. Max. memory is 16.1GB. [2024-06-03 20:09:09,162 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 0.17ms. Allocated memory is still 184.5MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.07ms. Allocated memory is still 184.5MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.20ms. Allocated memory is still 184.5MB. Free memory was 106.3MB in the beginning and 126.1MB in the end (delta: -19.8MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.84ms. Allocated memory is still 184.5MB. Free memory was 126.1MB in the beginning and 123.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.95ms. Allocated memory is still 184.5MB. Free memory was 123.0MB in the beginning and 119.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 660.05ms. Allocated memory is still 184.5MB. Free memory was 119.8MB in the beginning and 61.1MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 497937.46ms. Allocated memory was 184.5MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 60.1MB in the beginning and 808.3MB in the end (delta: -748.2MB). Peak memory consumption was 332.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 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: 497.8s, OverallIterations: 222, TraceHistogramMax: 1, PathProgramHistogramMax: 42, EmptinessCheckTime: 0.0s, AutomataDifference: 192.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15041 SdHoareTripleChecker+Valid, 73.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13023 mSDsluCounter, 5099 SdHoareTripleChecker+Invalid, 63.9s 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, 84.8s 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, 301.6s 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! [2024-06-03 20:09:09,273 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