./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 19:17:38,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:17:38,981 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:17:38,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:17:38,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:17:39,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:17:39,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:17:39,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:17:39,002 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:17:39,003 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:17:39,003 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:17:39,003 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:17:39,004 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:17:39,004 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:17:39,004 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:17:39,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:17:39,005 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:17:39,005 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:17:39,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:17:39,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:17:39,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:17:39,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:17:39,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:17:39,007 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:17:39,007 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:17:39,007 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:17:39,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:17:39,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:17:39,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:17:39,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:17:39,020 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:17:39,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:17:39,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:17:39,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:17:39,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:17:39,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:17:39,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:17:39,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:17:39,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:17:39,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:17:39,022 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:17:39,022 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:17:39,022 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:17:39,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:17:39,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:17:39,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:17:39,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:17:39,316 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:17:39,317 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:17:39,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-03 19:17:40,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:17:40,538 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:17:40,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-03 19:17:40,549 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47c24979d/3f4a0b5ae101472085326043885d254b/FLAGad222b50d [2024-06-03 19:17:40,559 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47c24979d/3f4a0b5ae101472085326043885d254b [2024-06-03 19:17:40,561 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:17:40,562 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:17:40,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml [2024-06-03 19:17:40,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:17:40,695 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:17:40,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:17:40,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:17:40,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:17:40,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:17:40" (1/2) ... [2024-06-03 19:17:40,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b143ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:17:40, skipping insertion in model container [2024-06-03 19:17:40,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:17:40" (1/2) ... [2024-06-03 19:17:40,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5cfb021b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:17:40, skipping insertion in model container [2024-06-03 19:17:40,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:17:40" (2/2) ... [2024-06-03 19:17:40,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b143ad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:40, skipping insertion in model container [2024-06-03 19:17:40,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:17:40" (2/2) ... [2024-06-03 19:17:40,706 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:17:40,762 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:17:40,763 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-03 19:17:40,763 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! 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 || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-03 19:17:40,764 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:17:40,764 INFO L106 edCorrectnessWitness]: ghost_update [L822-L822] multithreaded = 1; [2024-06-03 19:17:40,799 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:17:41,109 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:17:41,121 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:17:41,243 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:17:41,270 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:17:41,270 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41 WrapperNode [2024-06-03 19:17:41,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:17:41,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:17:41,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:17:41,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:17:41,277 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,324 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-03 19:17:41,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:17:41,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:17:41,326 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:17:41,326 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:17:41,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,349 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 19:17:41,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:17:41,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:17:41,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:17:41,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:17:41,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (1/1) ... [2024-06-03 19:17:41,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:17:41,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:17:41,411 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 19:17:41,429 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 19:17:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:17:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:17:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:17:41,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:17:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:17:41,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:17:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:17:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:17:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:17:41,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:17:41,441 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 19:17:41,583 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:17:41,585 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:17:41,829 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:17:41,835 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:17:41,994 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:17:41,994 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:17:41,996 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:17:41 BoogieIcfgContainer [2024-06-03 19:17:41,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:17:41,998 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:17:41,998 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:17:42,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:17:42,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:17:40" (1/4) ... [2024-06-03 19:17:42,001 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e01afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:17:42, skipping insertion in model container [2024-06-03 19:17:42,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:17:40" (2/4) ... [2024-06-03 19:17:42,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e01afb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:17:42, skipping insertion in model container [2024-06-03 19:17:42,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:17:41" (3/4) ... [2024-06-03 19:17:42,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47e01afb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:17:42, skipping insertion in model container [2024-06-03 19:17:42,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:17:41" (4/4) ... [2024-06-03 19:17:42,007 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_pso.opt_tso.opt.i [2024-06-03 19:17:42,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:17:42,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 19:17:42,020 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:17:42,051 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:17:42,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-03 19:17:42,101 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-03 19:17:42,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:17:42,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-03 19:17:42,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-03 19:17:42,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-03 19:17:42,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:17:42,122 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;@3bc38fa1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:17:42,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 19:17:42,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:17:42,125 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:17:42,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:17:42,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:42,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:17:42,127 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 19:17:42,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1928007687, now seen corresponding path program 1 times [2024-06-03 19:17:42,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:42,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311213169] [2024-06-03 19:17:42,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:42,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:17:42,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:42,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311213169] [2024-06-03 19:17:42,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311213169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:42,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:42,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:17:42,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745577166] [2024-06-03 19:17:42,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:42,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:17:42,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:17:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:17:42,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-03 19:17:42,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.0) 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 19:17:42,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:42,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-03 19:17:42,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:43,043 INFO L124 PetriNetUnfolderBase]: 131/259 cut-off events. [2024-06-03 19:17:43,044 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 19:17:43,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 259 events. 131/259 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 969 event pairs, 75 based on Foata normal form. 1/250 useless extension candidates. Maximal degree in co-relation 503. Up to 235 conditions per place. [2024-06-03 19:17:43,047 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-03 19:17:43,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-03 19:17:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:17:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:17:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-03 19:17:43,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-03 19:17:43,056 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-03 19:17:43,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-03 19:17:43,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 19:17:43,060 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-03 19:17:43,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-03 19:17:43,063 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-03 19:17:43,063 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-03 19:17:43,063 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 19:17:43,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:43,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:43,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:17:43,064 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 19:17:43,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1684465704, now seen corresponding path program 1 times [2024-06-03 19:17:43,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:43,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334703367] [2024-06-03 19:17:43,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:43,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:43,539 INFO 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 19:17:43,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:43,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334703367] [2024-06-03 19:17:43,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334703367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:43,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:43,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:17:43,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251380530] [2024-06-03 19:17:43,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:43,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:17:43,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:17:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:17:43,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-03 19:17:43,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:43,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:43,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-03 19:17:43,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:43,672 INFO L124 PetriNetUnfolderBase]: 147/276 cut-off events. [2024-06-03 19:17:43,673 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-03 19:17:43,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 276 events. 147/276 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 977 event pairs, 47 based on Foata normal form. 4/280 useless extension candidates. Maximal degree in co-relation 623. Up to 244 conditions per place. [2024-06-03 19:17:43,674 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-03 19:17:43,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 165 flow [2024-06-03 19:17:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:17:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:17:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-03 19:17:43,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-06-03 19:17:43,676 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 67 transitions. [2024-06-03 19:17:43,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 165 flow [2024-06-03 19:17:43,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:17:43,678 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-03 19:17:43,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-03 19:17:43,678 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-03 19:17:43,678 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-03 19:17:43,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:43,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:43,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:43,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:17:43,679 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 19:17:43,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:43,680 INFO L85 PathProgramCache]: Analyzing trace with hash 480685493, now seen corresponding path program 1 times [2024-06-03 19:17:43,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:43,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539372731] [2024-06-03 19:17:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:43,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:44,484 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 19:17:44,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539372731] [2024-06-03 19:17:44,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539372731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:44,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:44,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:17:44,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323404718] [2024-06-03 19:17:44,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:44,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:17:44,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:44,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:17:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:17:44,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-03 19:17:44,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:44,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:44,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-03 19:17:44,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:44,769 INFO L124 PetriNetUnfolderBase]: 143/268 cut-off events. [2024-06-03 19:17:44,769 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-03 19:17:44,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 268 events. 143/268 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 921 event pairs, 25 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 671. Up to 218 conditions per place. [2024-06-03 19:17:44,774 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-03 19:17:44,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 210 flow [2024-06-03 19:17:44,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:17:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:17:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-03 19:17:44,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-03 19:17:44,778 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 6 states and 89 transitions. [2024-06-03 19:17:44,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 210 flow [2024-06-03 19:17:44,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 198 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 19:17:44,783 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 111 flow [2024-06-03 19:17:44,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2024-06-03 19:17:44,784 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2024-06-03 19:17:44,785 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 111 flow [2024-06-03 19:17:44,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:44,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:44,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:44,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:17:44,785 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 19:17:44,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:44,786 INFO L85 PathProgramCache]: Analyzing trace with hash 349645541, now seen corresponding path program 1 times [2024-06-03 19:17:44,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:44,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227922499] [2024-06-03 19:17:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:44,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:44,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:45,323 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 19:17:45,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:45,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227922499] [2024-06-03 19:17:45,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227922499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:45,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:45,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:17:45,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553169023] [2024-06-03 19:17:45,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:45,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:17:45,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:45,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:17:45,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:17:45,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-03 19:17:45,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:45,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:45,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-03 19:17:45,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:45,494 INFO L124 PetriNetUnfolderBase]: 119/238 cut-off events. [2024-06-03 19:17:45,494 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-06-03 19:17:45,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 238 events. 119/238 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 843 event pairs, 34 based on Foata normal form. 1/239 useless extension candidates. Maximal degree in co-relation 642. Up to 211 conditions per place. [2024-06-03 19:17:45,496 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-03 19:17:45,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 191 flow [2024-06-03 19:17:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:17:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:17:45,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-06-03 19:17:45,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43870967741935485 [2024-06-03 19:17:45,497 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 111 flow. Second operand 5 states and 68 transitions. [2024-06-03 19:17:45,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 191 flow [2024-06-03 19:17:45,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 175 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 19:17:45,499 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 122 flow [2024-06-03 19:17:45,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-03 19:17:45,500 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-03 19:17:45,500 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 122 flow [2024-06-03 19:17:45,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:45,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:45,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:45,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:17:45,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:17:45,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:45,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2045889131, now seen corresponding path program 1 times [2024-06-03 19:17:45,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:45,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716759161] [2024-06-03 19:17:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:45,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:17:46,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:46,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716759161] [2024-06-03 19:17:46,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716759161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:46,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:46,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:17:46,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689234985] [2024-06-03 19:17:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:46,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:17:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:17:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:17:46,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-03 19:17:46,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 19:17:46,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:46,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-03 19:17:46,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:46,488 INFO L124 PetriNetUnfolderBase]: 115/232 cut-off events. [2024-06-03 19:17:46,488 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2024-06-03 19:17:46,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 232 events. 115/232 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 812 event pairs, 32 based on Foata normal form. 2/234 useless extension candidates. Maximal degree in co-relation 658. Up to 199 conditions per place. [2024-06-03 19:17:46,490 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-03 19:17:46,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 216 flow [2024-06-03 19:17:46,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:17:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:17:46,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-06-03 19:17:46,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-03 19:17:46,491 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 122 flow. Second operand 6 states and 80 transitions. [2024-06-03 19:17:46,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 216 flow [2024-06-03 19:17:46,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 205 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 19:17:46,493 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 144 flow [2024-06-03 19:17:46,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-03 19:17:46,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-03 19:17:46,494 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 144 flow [2024-06-03 19:17:46,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 19:17:46,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:46,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:46,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:17:46,495 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 19:17:46,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:46,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1001732070, now seen corresponding path program 1 times [2024-06-03 19:17:46,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:46,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474697470] [2024-06-03 19:17:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:47,010 INFO 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 19:17:47,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:47,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474697470] [2024-06-03 19:17:47,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474697470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:47,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:47,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:17:47,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591988327] [2024-06-03 19:17:47,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:47,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:17:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:17:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:17:47,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:47,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:47,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:47,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:47,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:47,221 INFO L124 PetriNetUnfolderBase]: 141/268 cut-off events. [2024-06-03 19:17:47,221 INFO L125 PetriNetUnfolderBase]: For 511/511 co-relation queries the response was YES. [2024-06-03 19:17:47,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 268 events. 141/268 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 940 event pairs, 38 based on Foata normal form. 2/270 useless extension candidates. Maximal degree in co-relation 832. Up to 237 conditions per place. [2024-06-03 19:17:47,223 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-03 19:17:47,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 260 flow [2024-06-03 19:17:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:17:47,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:17:47,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-03 19:17:47,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-03 19:17:47,224 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 144 flow. Second operand 6 states and 78 transitions. [2024-06-03 19:17:47,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 260 flow [2024-06-03 19:17:47,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 243 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 19:17:47,226 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 160 flow [2024-06-03 19:17:47,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-03 19:17:47,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-03 19:17:47,227 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 160 flow [2024-06-03 19:17:47,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:47,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:47,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:47,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:17:47,227 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 19:17:47,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1001939460, now seen corresponding path program 2 times [2024-06-03 19:17:47,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:47,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372927096] [2024-06-03 19:17:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:47,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:17:47,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:47,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372927096] [2024-06-03 19:17:47,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372927096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:47,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:47,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:17:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373987057] [2024-06-03 19:17:47,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:47,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:17:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:17:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:17:47,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:47,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:47,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:47,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:47,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:47,918 INFO L124 PetriNetUnfolderBase]: 142/273 cut-off events. [2024-06-03 19:17:47,918 INFO L125 PetriNetUnfolderBase]: For 682/684 co-relation queries the response was YES. [2024-06-03 19:17:47,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 273 events. 142/273 cut-off events. For 682/684 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 966 event pairs, 42 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 891. Up to 230 conditions per place. [2024-06-03 19:17:47,920 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2024-06-03 19:17:47,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 276 flow [2024-06-03 19:17:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:17:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:17:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-03 19:17:47,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-03 19:17:47,921 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 160 flow. Second operand 6 states and 78 transitions. [2024-06-03 19:17:47,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 276 flow [2024-06-03 19:17:47,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 259 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 19:17:47,923 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 186 flow [2024-06-03 19:17:47,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-03 19:17:47,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-03 19:17:47,924 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 186 flow [2024-06-03 19:17:47,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:47,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:47,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:47,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:17:47,925 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 19:17:47,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1850957652, now seen corresponding path program 1 times [2024-06-03 19:17:47,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:47,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887419874] [2024-06-03 19:17:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:48,542 INFO 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 19:17:48,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:48,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887419874] [2024-06-03 19:17:48,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887419874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:48,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:48,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:17:48,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912207761] [2024-06-03 19:17:48,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:48,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:17:48,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:48,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:17:48,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:17:48,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:48,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 186 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:48,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:48,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:48,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:48,838 INFO L124 PetriNetUnfolderBase]: 153/295 cut-off events. [2024-06-03 19:17:48,839 INFO L125 PetriNetUnfolderBase]: For 880/880 co-relation queries the response was YES. [2024-06-03 19:17:48,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 295 events. 153/295 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1076 event pairs, 38 based on Foata normal form. 1/296 useless extension candidates. Maximal degree in co-relation 1032. Up to 254 conditions per place. [2024-06-03 19:17:48,841 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-03 19:17:48,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 366 flow [2024-06-03 19:17:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:17:48,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:17:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-03 19:17:48,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-03 19:17:48,842 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 186 flow. Second operand 8 states and 99 transitions. [2024-06-03 19:17:48,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 55 transitions, 366 flow [2024-06-03 19:17:48,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 335 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 19:17:48,844 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 247 flow [2024-06-03 19:17:48,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=247, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-03 19:17:48,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-03 19:17:48,845 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 247 flow [2024-06-03 19:17:48,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:48,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:48,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:48,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:17:48,846 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 19:17:48,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:48,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1756143508, now seen corresponding path program 2 times [2024-06-03 19:17:48,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:48,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168489945] [2024-06-03 19:17:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:17:49,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:49,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168489945] [2024-06-03 19:17:49,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168489945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:49,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:49,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:17:49,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718076049] [2024-06-03 19:17:49,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:49,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:17:49,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:17:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:17:49,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:49,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:49,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:49,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:49,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:49,763 INFO L124 PetriNetUnfolderBase]: 151/292 cut-off events. [2024-06-03 19:17:49,763 INFO L125 PetriNetUnfolderBase]: For 1132/1132 co-relation queries the response was YES. [2024-06-03 19:17:49,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 292 events. 151/292 cut-off events. For 1132/1132 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1071 event pairs, 37 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 1079. Up to 239 conditions per place. [2024-06-03 19:17:49,765 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 38 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-03 19:17:49,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 409 flow [2024-06-03 19:17:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:17:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:17:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-03 19:17:49,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-03 19:17:49,766 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 247 flow. Second operand 7 states and 90 transitions. [2024-06-03 19:17:49,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 409 flow [2024-06-03 19:17:49,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 379 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-03 19:17:49,768 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 281 flow [2024-06-03 19:17:49,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=281, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-03 19:17:49,769 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-03 19:17:49,769 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 281 flow [2024-06-03 19:17:49,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:49,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:49,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:49,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:17:49,770 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 19:17:49,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:49,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1756023352, now seen corresponding path program 1 times [2024-06-03 19:17:49,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:49,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689352633] [2024-06-03 19:17:49,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:49,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:50,443 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 19:17:50,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:50,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689352633] [2024-06-03 19:17:50,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689352633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:50,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:50,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:17:50,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503293598] [2024-06-03 19:17:50,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:50,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:17:50,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:50,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:17:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:17:50,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:50,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 281 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:50,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:50,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:50,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:50,677 INFO L124 PetriNetUnfolderBase]: 157/302 cut-off events. [2024-06-03 19:17:50,677 INFO L125 PetriNetUnfolderBase]: For 1473/1473 co-relation queries the response was YES. [2024-06-03 19:17:50,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 302 events. 157/302 cut-off events. For 1473/1473 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1106 event pairs, 36 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 1168. Up to 255 conditions per place. [2024-06-03 19:17:50,679 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 42 selfloop transitions, 13 changer transitions 0/58 dead transitions. [2024-06-03 19:17:50,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 437 flow [2024-06-03 19:17:50,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:17:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:17:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-03 19:17:50,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-03 19:17:50,680 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 281 flow. Second operand 7 states and 89 transitions. [2024-06-03 19:17:50,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 437 flow [2024-06-03 19:17:50,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 391 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-03 19:17:50,682 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 291 flow [2024-06-03 19:17:50,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-06-03 19:17:50,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-03 19:17:50,683 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 291 flow [2024-06-03 19:17:50,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:50,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:50,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:50,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:17:50,684 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 19:17:50,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:50,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1578891832, now seen corresponding path program 2 times [2024-06-03 19:17:50,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:50,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564494302] [2024-06-03 19:17:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:50,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:17:51,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564494302] [2024-06-03 19:17:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564494302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:51,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:17:51,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996897553] [2024-06-03 19:17:51,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:51,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:17:51,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:51,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:17:51,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:17:51,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:51,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:51,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:51,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:51,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:51,625 INFO L124 PetriNetUnfolderBase]: 163/313 cut-off events. [2024-06-03 19:17:51,626 INFO L125 PetriNetUnfolderBase]: For 1481/1483 co-relation queries the response was YES. [2024-06-03 19:17:51,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 313 events. 163/313 cut-off events. For 1481/1483 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1147 event pairs, 39 based on Foata normal form. 4/317 useless extension candidates. Maximal degree in co-relation 1226. Up to 256 conditions per place. [2024-06-03 19:17:51,628 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 41 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2024-06-03 19:17:51,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 457 flow [2024-06-03 19:17:51,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:17:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:17:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-03 19:17:51,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-03 19:17:51,629 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 291 flow. Second operand 7 states and 89 transitions. [2024-06-03 19:17:51,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 457 flow [2024-06-03 19:17:51,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 425 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 19:17:51,632 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 325 flow [2024-06-03 19:17:51,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-03 19:17:51,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-03 19:17:51,633 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 325 flow [2024-06-03 19:17:51,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:51,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:51,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:51,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:17:51,634 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 19:17:51,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 995590324, now seen corresponding path program 3 times [2024-06-03 19:17:51,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:51,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564410853] [2024-06-03 19:17:51,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:51,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:17:52,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:52,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564410853] [2024-06-03 19:17:52,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564410853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:52,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:52,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:17:52,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921502340] [2024-06-03 19:17:52,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:52,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:17:52,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:52,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:17:52,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:17:52,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:52,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:52,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:52,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:52,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:52,595 INFO L124 PetriNetUnfolderBase]: 161/310 cut-off events. [2024-06-03 19:17:52,595 INFO L125 PetriNetUnfolderBase]: For 1676/1678 co-relation queries the response was YES. [2024-06-03 19:17:52,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 310 events. 161/310 cut-off events. For 1676/1678 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1153 event pairs, 39 based on Foata normal form. 3/313 useless extension candidates. Maximal degree in co-relation 1284. Up to 241 conditions per place. [2024-06-03 19:17:52,597 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 22 changer transitions 0/63 dead transitions. [2024-06-03 19:17:52,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 495 flow [2024-06-03 19:17:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:17:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:17:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-03 19:17:52,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-03 19:17:52,598 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 325 flow. Second operand 7 states and 89 transitions. [2024-06-03 19:17:52,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 495 flow [2024-06-03 19:17:52,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 451 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-03 19:17:52,601 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 371 flow [2024-06-03 19:17:52,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-03 19:17:52,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-03 19:17:52,602 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 371 flow [2024-06-03 19:17:52,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:52,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:52,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:52,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:17:52,603 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 19:17:52,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1262900598, now seen corresponding path program 1 times [2024-06-03 19:17:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:52,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406275036] [2024-06-03 19:17:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:53,779 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 19:17:53,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:53,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406275036] [2024-06-03 19:17:53,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406275036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:53,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:53,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:17:53,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260802621] [2024-06-03 19:17:53,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:53,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:17:53,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:53,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:17:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:17:53,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:53,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 371 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:53,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:53,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:53,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:54,066 INFO L124 PetriNetUnfolderBase]: 164/316 cut-off events. [2024-06-03 19:17:54,067 INFO L125 PetriNetUnfolderBase]: For 2013/2013 co-relation queries the response was YES. [2024-06-03 19:17:54,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 316 events. 164/316 cut-off events. For 2013/2013 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1184 event pairs, 35 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 1389. Up to 256 conditions per place. [2024-06-03 19:17:54,069 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 18 changer transitions 0/70 dead transitions. [2024-06-03 19:17:54,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 563 flow [2024-06-03 19:17:54,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:17:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:17:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-03 19:17:54,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-03 19:17:54,070 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 371 flow. Second operand 8 states and 100 transitions. [2024-06-03 19:17:54,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 563 flow [2024-06-03 19:17:54,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 537 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-03 19:17:54,073 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 413 flow [2024-06-03 19:17:54,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=413, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-06-03 19:17:54,074 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-03 19:17:54,074 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 413 flow [2024-06-03 19:17:54,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:54,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:54,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:54,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:17:54,075 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 19:17:54,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:54,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1768299273, now seen corresponding path program 1 times [2024-06-03 19:17:54,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:54,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116506281] [2024-06-03 19:17:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:54,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:54,879 INFO 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 19:17:54,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:54,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116506281] [2024-06-03 19:17:54,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116506281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:54,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:54,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:17:54,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226869842] [2024-06-03 19:17:54,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:54,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:17:54,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:54,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:17:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:17:54,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:54,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 413 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:54,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:54,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:54,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:55,129 INFO L124 PetriNetUnfolderBase]: 170/326 cut-off events. [2024-06-03 19:17:55,129 INFO L125 PetriNetUnfolderBase]: For 2469/2469 co-relation queries the response was YES. [2024-06-03 19:17:55,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 326 events. 170/326 cut-off events. For 2469/2469 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1233 event pairs, 34 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 1509. Up to 271 conditions per place. [2024-06-03 19:17:55,131 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 52 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2024-06-03 19:17:55,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 613 flow [2024-06-03 19:17:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:17:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:17:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-03 19:17:55,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-03 19:17:55,133 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 413 flow. Second operand 8 states and 100 transitions. [2024-06-03 19:17:55,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 613 flow [2024-06-03 19:17:55,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 563 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 19:17:55,136 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 435 flow [2024-06-03 19:17:55,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=435, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-06-03 19:17:55,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-03 19:17:55,138 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 435 flow [2024-06-03 19:17:55,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:55,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:55,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:55,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:17:55,138 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 19:17:55,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:55,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1768299490, now seen corresponding path program 2 times [2024-06-03 19:17:55,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:55,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114997593] [2024-06-03 19:17:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:55,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:17:56,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:56,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114997593] [2024-06-03 19:17:56,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114997593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:56,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:56,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:17:56,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096546164] [2024-06-03 19:17:56,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:56,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:17:56,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:17:56,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:17:56,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:56,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 435 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:56,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:56,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:56,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:56,833 INFO L124 PetriNetUnfolderBase]: 173/332 cut-off events. [2024-06-03 19:17:56,833 INFO L125 PetriNetUnfolderBase]: For 2748/2748 co-relation queries the response was YES. [2024-06-03 19:17:56,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1639 conditions, 332 events. 173/332 cut-off events. For 2748/2748 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1253 event pairs, 36 based on Foata normal form. 1/333 useless extension candidates. Maximal degree in co-relation 1604. Up to 254 conditions per place. [2024-06-03 19:17:56,836 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 25 changer transitions 0/76 dead transitions. [2024-06-03 19:17:56,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 663 flow [2024-06-03 19:17:56,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:17:56,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:17:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 19:17:56,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-03 19:17:56,837 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 435 flow. Second operand 9 states and 110 transitions. [2024-06-03 19:17:56,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 663 flow [2024-06-03 19:17:56,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 76 transitions, 611 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-03 19:17:56,844 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 504 flow [2024-06-03 19:17:56,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-06-03 19:17:56,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-03 19:17:56,845 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 504 flow [2024-06-03 19:17:56,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:56,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:56,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:56,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:17:56,846 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 19:17:56,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:56,846 INFO L85 PathProgramCache]: Analyzing trace with hash 798796899, now seen corresponding path program 2 times [2024-06-03 19:17:56,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:56,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039768512] [2024-06-03 19:17:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:56,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:17:57,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:57,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039768512] [2024-06-03 19:17:57,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039768512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:57,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:57,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:17:57,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319267342] [2024-06-03 19:17:57,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:57,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:17:57,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:17:57,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:17:57,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:57,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 504 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:57,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:57,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:57,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:58,020 INFO L124 PetriNetUnfolderBase]: 176/337 cut-off events. [2024-06-03 19:17:58,020 INFO L125 PetriNetUnfolderBase]: For 3263/3263 co-relation queries the response was YES. [2024-06-03 19:17:58,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 337 events. 176/337 cut-off events. For 3263/3263 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1279 event pairs, 37 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 1701. Up to 300 conditions per place. [2024-06-03 19:17:58,022 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-06-03 19:17:58,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 698 flow [2024-06-03 19:17:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:17:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:17:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 19:17:58,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-03 19:17:58,024 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 504 flow. Second operand 8 states and 94 transitions. [2024-06-03 19:17:58,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 698 flow [2024-06-03 19:17:58,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 630 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-03 19:17:58,029 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 502 flow [2024-06-03 19:17:58,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2024-06-03 19:17:58,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-03 19:17:58,030 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 502 flow [2024-06-03 19:17:58,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:58,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:58,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:58,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:17:58,031 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 19:17:58,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:58,032 INFO L85 PathProgramCache]: Analyzing trace with hash 798529772, now seen corresponding path program 3 times [2024-06-03 19:17:58,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:58,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071660883] [2024-06-03 19:17:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:58,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:17:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:17:58,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:17:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071660883] [2024-06-03 19:17:58,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071660883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:17:58,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:17:58,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:17:58,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789419542] [2024-06-03 19:17:58,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:17:58,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:17:58,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:17:58,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:17:58,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:17:59,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:17:59,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 502 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:59,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:17:59,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:17:59,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:17:59,271 INFO L124 PetriNetUnfolderBase]: 179/346 cut-off events. [2024-06-03 19:17:59,272 INFO L125 PetriNetUnfolderBase]: For 3616/3618 co-relation queries the response was YES. [2024-06-03 19:17:59,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 346 events. 179/346 cut-off events. For 3616/3618 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1338 event pairs, 37 based on Foata normal form. 3/349 useless extension candidates. Maximal degree in co-relation 1748. Up to 261 conditions per place. [2024-06-03 19:17:59,274 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 27 changer transitions 0/82 dead transitions. [2024-06-03 19:17:59,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 792 flow [2024-06-03 19:17:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:17:59,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:17:59,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-03 19:17:59,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-03 19:17:59,289 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 502 flow. Second operand 8 states and 100 transitions. [2024-06-03 19:17:59,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 792 flow [2024-06-03 19:17:59,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 750 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-03 19:17:59,293 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 587 flow [2024-06-03 19:17:59,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=587, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-06-03 19:17:59,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-03 19:17:59,294 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 587 flow [2024-06-03 19:17:59,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:17:59,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:17:59,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:17:59,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:17:59,294 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 19:17:59,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:17:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash 798529989, now seen corresponding path program 3 times [2024-06-03 19:17:59,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:17:59,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496879119] [2024-06-03 19:17:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:17:59,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:17:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:00,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:00,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:00,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496879119] [2024-06-03 19:18:00,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496879119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:00,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:00,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:00,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456733667] [2024-06-03 19:18:00,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:00,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:00,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:00,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:00,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:00,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:00,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 587 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:00,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:00,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:00,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:00,533 INFO L124 PetriNetUnfolderBase]: 200/380 cut-off events. [2024-06-03 19:18:00,533 INFO L125 PetriNetUnfolderBase]: For 5064/5066 co-relation queries the response was YES. [2024-06-03 19:18:00,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2105 conditions, 380 events. 200/380 cut-off events. For 5064/5066 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1502 event pairs, 35 based on Foata normal form. 4/384 useless extension candidates. Maximal degree in co-relation 2064. Up to 256 conditions per place. [2024-06-03 19:18:00,536 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 33 changer transitions 0/92 dead transitions. [2024-06-03 19:18:00,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 92 transitions, 963 flow [2024-06-03 19:18:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:18:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:18:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-03 19:18:00,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-03 19:18:00,537 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 587 flow. Second operand 8 states and 106 transitions. [2024-06-03 19:18:00,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 92 transitions, 963 flow [2024-06-03 19:18:00,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 913 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-03 19:18:00,549 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 731 flow [2024-06-03 19:18:00,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=731, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-06-03 19:18:00,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-03 19:18:00,550 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 731 flow [2024-06-03 19:18:00,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:00,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:00,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:00,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:18:00,550 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 19:18:00,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:00,551 INFO L85 PathProgramCache]: Analyzing trace with hash 791178339, now seen corresponding path program 4 times [2024-06-03 19:18:00,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:00,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246714760] [2024-06-03 19:18:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:00,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:01,267 INFO 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 19:18:01,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:01,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246714760] [2024-06-03 19:18:01,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246714760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:01,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:01,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:01,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401646675] [2024-06-03 19:18:01,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:01,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:01,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:01,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:01,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:01,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:01,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 731 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:01,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:01,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:01,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:01,557 INFO L124 PetriNetUnfolderBase]: 202/384 cut-off events. [2024-06-03 19:18:01,557 INFO L125 PetriNetUnfolderBase]: For 5765/5767 co-relation queries the response was YES. [2024-06-03 19:18:01,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 384 events. 202/384 cut-off events. For 5765/5767 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1527 event pairs, 37 based on Foata normal form. 6/390 useless extension candidates. Maximal degree in co-relation 2208. Up to 309 conditions per place. [2024-06-03 19:18:01,560 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 20 changer transitions 0/92 dead transitions. [2024-06-03 19:18:01,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 986 flow [2024-06-03 19:18:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:18:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:18:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-03 19:18:01,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-03 19:18:01,562 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 731 flow. Second operand 8 states and 101 transitions. [2024-06-03 19:18:01,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 986 flow [2024-06-03 19:18:01,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 933 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-03 19:18:01,569 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 781 flow [2024-06-03 19:18:01,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=781, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2024-06-03 19:18:01,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-03 19:18:01,571 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 781 flow [2024-06-03 19:18:01,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:01,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:01,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:01,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 19:18:01,571 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 19:18:01,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1701005736, now seen corresponding path program 4 times [2024-06-03 19:18:01,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:01,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26444397] [2024-06-03 19:18:01,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:01,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:02,680 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 19:18:02,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:02,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26444397] [2024-06-03 19:18:02,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26444397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:02,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:02,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:02,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199816282] [2024-06-03 19:18:02,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:02,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:02,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:02,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:02,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 781 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:02,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:02,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:02,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:03,015 INFO L124 PetriNetUnfolderBase]: 200/381 cut-off events. [2024-06-03 19:18:03,016 INFO L125 PetriNetUnfolderBase]: For 5414/5416 co-relation queries the response was YES. [2024-06-03 19:18:03,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2235 conditions, 381 events. 200/381 cut-off events. For 5414/5416 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1509 event pairs, 37 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 2190. Up to 315 conditions per place. [2024-06-03 19:18:03,018 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 19 changer transitions 0/91 dead transitions. [2024-06-03 19:18:03,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 977 flow [2024-06-03 19:18:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:18:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:18:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-03 19:18:03,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-03 19:18:03,019 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 781 flow. Second operand 8 states and 99 transitions. [2024-06-03 19:18:03,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 977 flow [2024-06-03 19:18:03,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 899 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-03 19:18:03,026 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 746 flow [2024-06-03 19:18:03,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=746, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2024-06-03 19:18:03,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-03 19:18:03,027 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 746 flow [2024-06-03 19:18:03,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:03,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:03,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 19:18:03,028 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 19:18:03,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:03,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1693377039, now seen corresponding path program 1 times [2024-06-03 19:18:03,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:03,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635362268] [2024-06-03 19:18:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:03,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:03,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635362268] [2024-06-03 19:18:03,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635362268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:03,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:03,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:03,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451910098] [2024-06-03 19:18:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:03,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:03,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:03,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 746 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:03,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:03,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:03,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:04,152 INFO L124 PetriNetUnfolderBase]: 197/374 cut-off events. [2024-06-03 19:18:04,153 INFO L125 PetriNetUnfolderBase]: For 5316/5316 co-relation queries the response was YES. [2024-06-03 19:18:04,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2133 conditions, 374 events. 197/374 cut-off events. For 5316/5316 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1460 event pairs, 36 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 2087. Up to 329 conditions per place. [2024-06-03 19:18:04,155 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 77 selfloop transitions, 12 changer transitions 0/92 dead transitions. [2024-06-03 19:18:04,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 946 flow [2024-06-03 19:18:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:18:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:18:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-03 19:18:04,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-03 19:18:04,156 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 746 flow. Second operand 8 states and 94 transitions. [2024-06-03 19:18:04,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 946 flow [2024-06-03 19:18:04,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 869 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:04,166 INFO L231 Difference]: Finished difference. Result has 94 places, 83 transitions, 697 flow [2024-06-03 19:18:04,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=697, PETRI_PLACES=94, PETRI_TRANSITIONS=83} [2024-06-03 19:18:04,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-03 19:18:04,167 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 697 flow [2024-06-03 19:18:04,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:04,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:04,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:04,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 19:18:04,167 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 19:18:04,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:04,168 INFO L85 PathProgramCache]: Analyzing trace with hash 378967173, now seen corresponding path program 1 times [2024-06-03 19:18:04,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:04,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912505583] [2024-06-03 19:18:04,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:04,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:04,860 INFO 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 19:18:04,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912505583] [2024-06-03 19:18:04,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912505583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:04,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:04,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:04,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670619633] [2024-06-03 19:18:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:04,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:04,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:04,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:04,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:04,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:04,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:04,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:05,182 INFO L124 PetriNetUnfolderBase]: 201/383 cut-off events. [2024-06-03 19:18:05,183 INFO L125 PetriNetUnfolderBase]: For 5684/5684 co-relation queries the response was YES. [2024-06-03 19:18:05,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 383 events. 201/383 cut-off events. For 5684/5684 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1529 event pairs, 14 based on Foata normal form. 2/385 useless extension candidates. Maximal degree in co-relation 2072. Up to 301 conditions per place. [2024-06-03 19:18:05,186 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 82 selfloop transitions, 14 changer transitions 0/99 dead transitions. [2024-06-03 19:18:05,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 99 transitions, 939 flow [2024-06-03 19:18:05,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:18:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:18:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-03 19:18:05,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-03 19:18:05,188 INFO L175 Difference]: Start difference. First operand has 94 places, 83 transitions, 697 flow. Second operand 8 states and 99 transitions. [2024-06-03 19:18:05,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 99 transitions, 939 flow [2024-06-03 19:18:05,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 99 transitions, 896 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:05,196 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 698 flow [2024-06-03 19:18:05,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-03 19:18:05,196 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-03 19:18:05,197 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 698 flow [2024-06-03 19:18:05,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:05,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:05,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:05,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 19:18:05,197 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 19:18:05,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash 265466253, now seen corresponding path program 2 times [2024-06-03 19:18:05,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:05,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885122504] [2024-06-03 19:18:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:05,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:05,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885122504] [2024-06-03 19:18:05,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885122504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:05,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:05,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:05,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749087972] [2024-06-03 19:18:05,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:05,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:05,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:05,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:05,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:05,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:05,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 698 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:05,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:05,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:05,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:06,281 INFO L124 PetriNetUnfolderBase]: 212/404 cut-off events. [2024-06-03 19:18:06,282 INFO L125 PetriNetUnfolderBase]: For 6234/6234 co-relation queries the response was YES. [2024-06-03 19:18:06,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 404 events. 212/404 cut-off events. For 6234/6234 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1646 event pairs, 35 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 2184. Up to 339 conditions per place. [2024-06-03 19:18:06,286 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 81 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2024-06-03 19:18:06,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 1009 flow [2024-06-03 19:18:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:06,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 19:18:06,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:18:06,288 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 698 flow. Second operand 9 states and 108 transitions. [2024-06-03 19:18:06,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 1009 flow [2024-06-03 19:18:06,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 965 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 19:18:06,295 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 812 flow [2024-06-03 19:18:06,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=812, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2024-06-03 19:18:06,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-03 19:18:06,296 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 812 flow [2024-06-03 19:18:06,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:06,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:06,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:06,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 19:18:06,296 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 19:18:06,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:06,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1633635095, now seen corresponding path program 3 times [2024-06-03 19:18:06,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:06,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465272150] [2024-06-03 19:18:06,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:06,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:07,151 INFO 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 19:18:07,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:07,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465272150] [2024-06-03 19:18:07,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465272150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:07,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:07,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:07,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897053436] [2024-06-03 19:18:07,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:07,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:07,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:07,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:07,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:07,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:07,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 812 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:07,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:07,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:07,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:07,481 INFO L124 PetriNetUnfolderBase]: 216/412 cut-off events. [2024-06-03 19:18:07,482 INFO L125 PetriNetUnfolderBase]: For 6976/6976 co-relation queries the response was YES. [2024-06-03 19:18:07,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 412 events. 216/412 cut-off events. For 6976/6976 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1707 event pairs, 48 based on Foata normal form. 2/414 useless extension candidates. Maximal degree in co-relation 2280. Up to 347 conditions per place. [2024-06-03 19:18:07,484 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 85 selfloop transitions, 21 changer transitions 0/109 dead transitions. [2024-06-03 19:18:07,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 109 transitions, 1082 flow [2024-06-03 19:18:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:18:07,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-03 19:18:07,486 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 812 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:18:07,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 109 transitions, 1082 flow [2024-06-03 19:18:07,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 109 transitions, 1048 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-03 19:18:07,495 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 859 flow [2024-06-03 19:18:07,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=859, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-06-03 19:18:07,495 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-03 19:18:07,496 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 859 flow [2024-06-03 19:18:07,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:07,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:07,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:07,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 19:18:07,496 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 19:18:07,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1855657033, now seen corresponding path program 1 times [2024-06-03 19:18:07,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:07,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142209359] [2024-06-03 19:18:07,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:07,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:08,477 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 19:18:08,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:08,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142209359] [2024-06-03 19:18:08,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142209359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:08,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:08,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:08,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610001896] [2024-06-03 19:18:08,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:08,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:08,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:08,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:08,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:08,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:08,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 859 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:08,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:08,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:08,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:08,764 INFO L124 PetriNetUnfolderBase]: 225/427 cut-off events. [2024-06-03 19:18:08,764 INFO L125 PetriNetUnfolderBase]: For 7644/7644 co-relation queries the response was YES. [2024-06-03 19:18:08,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 427 events. 225/427 cut-off events. For 7644/7644 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1786 event pairs, 45 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 2398. Up to 359 conditions per place. [2024-06-03 19:18:08,767 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2024-06-03 19:18:08,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 114 transitions, 1161 flow [2024-06-03 19:18:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 19:18:08,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-03 19:18:08,768 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 859 flow. Second operand 10 states and 122 transitions. [2024-06-03 19:18:08,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 114 transitions, 1161 flow [2024-06-03 19:18:08,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 1082 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-03 19:18:08,779 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 882 flow [2024-06-03 19:18:08,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=882, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2024-06-03 19:18:08,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-03 19:18:08,780 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 882 flow [2024-06-03 19:18:08,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:08,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:08,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:08,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 19:18:08,780 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 19:18:08,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash -898013573, now seen corresponding path program 4 times [2024-06-03 19:18:08,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:08,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495896185] [2024-06-03 19:18:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:08,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:09,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:09,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495896185] [2024-06-03 19:18:09,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495896185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:09,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:09,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:09,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741322281] [2024-06-03 19:18:09,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:09,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:09,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:09,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:09,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:09,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 882 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:09,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:09,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:09,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:09,873 INFO L124 PetriNetUnfolderBase]: 229/435 cut-off events. [2024-06-03 19:18:09,873 INFO L125 PetriNetUnfolderBase]: For 8167/8167 co-relation queries the response was YES. [2024-06-03 19:18:09,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 435 events. 229/435 cut-off events. For 8167/8167 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1822 event pairs, 30 based on Foata normal form. 2/437 useless extension candidates. Maximal degree in co-relation 2452. Up to 370 conditions per place. [2024-06-03 19:18:09,876 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 90 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-03 19:18:09,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 1152 flow [2024-06-03 19:18:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:09,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:18:09,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-03 19:18:09,880 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 882 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:18:09,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 1152 flow [2024-06-03 19:18:09,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 1086 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:09,890 INFO L231 Difference]: Finished difference. Result has 114 places, 100 transitions, 878 flow [2024-06-03 19:18:09,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=878, PETRI_PLACES=114, PETRI_TRANSITIONS=100} [2024-06-03 19:18:09,890 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-03 19:18:09,890 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 100 transitions, 878 flow [2024-06-03 19:18:09,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:09,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:09,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:09,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 19:18:09,891 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 19:18:09,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:09,891 INFO L85 PathProgramCache]: Analyzing trace with hash -782722403, now seen corresponding path program 5 times [2024-06-03 19:18:09,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:09,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984110189] [2024-06-03 19:18:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:09,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:10,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:10,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984110189] [2024-06-03 19:18:10,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984110189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:10,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:10,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:10,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630474165] [2024-06-03 19:18:10,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:10,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:10,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:10,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:10,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:10,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:10,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 100 transitions, 878 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:10,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:10,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:10,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:10,795 INFO L124 PetriNetUnfolderBase]: 239/455 cut-off events. [2024-06-03 19:18:10,795 INFO L125 PetriNetUnfolderBase]: For 8728/8728 co-relation queries the response was YES. [2024-06-03 19:18:10,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2581 conditions, 455 events. 239/455 cut-off events. For 8728/8728 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1945 event pairs, 54 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2527. Up to 401 conditions per place. [2024-06-03 19:18:10,799 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 98 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-06-03 19:18:10,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 1188 flow [2024-06-03 19:18:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:10,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:10,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-03 19:18:10,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:18:10,800 INFO L175 Difference]: Start difference. First operand has 114 places, 100 transitions, 878 flow. Second operand 9 states and 108 transitions. [2024-06-03 19:18:10,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 117 transitions, 1188 flow [2024-06-03 19:18:10,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 1144 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 19:18:10,810 INFO L231 Difference]: Finished difference. Result has 119 places, 105 transitions, 938 flow [2024-06-03 19:18:10,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=938, PETRI_PLACES=119, PETRI_TRANSITIONS=105} [2024-06-03 19:18:10,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-03 19:18:10,811 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 105 transitions, 938 flow [2024-06-03 19:18:10,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:10,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:10,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:10,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 19:18:10,812 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 19:18:10,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash -898008613, now seen corresponding path program 2 times [2024-06-03 19:18:10,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:10,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614113669] [2024-06-03 19:18:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:10,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:11,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614113669] [2024-06-03 19:18:11,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614113669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:11,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:11,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:11,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457661180] [2024-06-03 19:18:11,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:11,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:11,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:11,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:11,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:11,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 938 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:11,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:11,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:11,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:11,961 INFO L124 PetriNetUnfolderBase]: 248/470 cut-off events. [2024-06-03 19:18:11,962 INFO L125 PetriNetUnfolderBase]: For 9489/9489 co-relation queries the response was YES. [2024-06-03 19:18:11,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 470 events. 248/470 cut-off events. For 9489/9489 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2031 event pairs, 54 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 2640. Up to 411 conditions per place. [2024-06-03 19:18:11,965 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 19 changer transitions 0/123 dead transitions. [2024-06-03 19:18:11,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 123 transitions, 1264 flow [2024-06-03 19:18:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:18:11,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:18:11,966 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 938 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:18:11,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 123 transitions, 1264 flow [2024-06-03 19:18:11,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 123 transitions, 1224 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-03 19:18:11,978 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 998 flow [2024-06-03 19:18:11,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=998, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-06-03 19:18:11,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-03 19:18:11,978 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 998 flow [2024-06-03 19:18:11,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:11,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:11,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:11,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 19:18:11,979 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 19:18:11,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1791700543, now seen corresponding path program 3 times [2024-06-03 19:18:11,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:11,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107040375] [2024-06-03 19:18:11,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:11,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:12,922 INFO 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 19:18:12,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:12,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107040375] [2024-06-03 19:18:12,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107040375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:12,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:12,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:12,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342945501] [2024-06-03 19:18:12,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:12,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:12,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:12,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:12,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:13,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:13,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 998 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:13,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:13,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:13,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:13,282 INFO L124 PetriNetUnfolderBase]: 271/512 cut-off events. [2024-06-03 19:18:13,283 INFO L125 PetriNetUnfolderBase]: For 10412/10412 co-relation queries the response was YES. [2024-06-03 19:18:13,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2970 conditions, 512 events. 271/512 cut-off events. For 10412/10412 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2285 event pairs, 53 based on Foata normal form. 1/513 useless extension candidates. Maximal degree in co-relation 2911. Up to 438 conditions per place. [2024-06-03 19:18:13,286 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 25 changer transitions 0/134 dead transitions. [2024-06-03 19:18:13,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 1466 flow [2024-06-03 19:18:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 19:18:13,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-03 19:18:13,288 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 998 flow. Second operand 10 states and 123 transitions. [2024-06-03 19:18:13,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 1466 flow [2024-06-03 19:18:13,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 134 transitions, 1402 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:13,301 INFO L231 Difference]: Finished difference. Result has 130 places, 120 transitions, 1133 flow [2024-06-03 19:18:13,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1133, PETRI_PLACES=130, PETRI_TRANSITIONS=120} [2024-06-03 19:18:13,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-03 19:18:13,302 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 120 transitions, 1133 flow [2024-06-03 19:18:13,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:13,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:13,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:13,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 19:18:13,303 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 19:18:13,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1791707301, now seen corresponding path program 1 times [2024-06-03 19:18:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927903307] [2024-06-03 19:18:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:14,055 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 19:18:14,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:14,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927903307] [2024-06-03 19:18:14,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927903307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:14,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:14,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:14,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094258452] [2024-06-03 19:18:14,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:14,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:14,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:14,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:14,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:14,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:14,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 120 transitions, 1133 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:14,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:14,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:14,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:14,350 INFO L124 PetriNetUnfolderBase]: 277/522 cut-off events. [2024-06-03 19:18:14,350 INFO L125 PetriNetUnfolderBase]: For 11494/11494 co-relation queries the response was YES. [2024-06-03 19:18:14,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 522 events. 277/522 cut-off events. For 11494/11494 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2324 event pairs, 52 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 3047. Up to 452 conditions per place. [2024-06-03 19:18:14,354 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 22 changer transitions 0/135 dead transitions. [2024-06-03 19:18:14,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 1485 flow [2024-06-03 19:18:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-03 19:18:14,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-03 19:18:14,356 INFO L175 Difference]: Start difference. First operand has 130 places, 120 transitions, 1133 flow. Second operand 9 states and 112 transitions. [2024-06-03 19:18:14,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 1485 flow [2024-06-03 19:18:14,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 135 transitions, 1432 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-03 19:18:14,371 INFO L231 Difference]: Finished difference. Result has 135 places, 124 transitions, 1205 flow [2024-06-03 19:18:14,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=135, PETRI_TRANSITIONS=124} [2024-06-03 19:18:14,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-03 19:18:14,371 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 124 transitions, 1205 flow [2024-06-03 19:18:14,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:14,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:14,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:14,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 19:18:14,372 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 19:18:14,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:14,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2131648787, now seen corresponding path program 4 times [2024-06-03 19:18:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:14,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672912229] [2024-06-03 19:18:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:15,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:15,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:15,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672912229] [2024-06-03 19:18:15,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672912229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:15,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:15,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:15,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231688032] [2024-06-03 19:18:15,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:15,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:15,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:15,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:15,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:15,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 124 transitions, 1205 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:15,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:15,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:15,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:15,578 INFO L124 PetriNetUnfolderBase]: 283/534 cut-off events. [2024-06-03 19:18:15,579 INFO L125 PetriNetUnfolderBase]: For 12357/12357 co-relation queries the response was YES. [2024-06-03 19:18:15,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3267 conditions, 534 events. 283/534 cut-off events. For 12357/12357 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2399 event pairs, 53 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 3202. Up to 444 conditions per place. [2024-06-03 19:18:15,582 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 30 changer transitions 0/141 dead transitions. [2024-06-03 19:18:15,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 141 transitions, 1651 flow [2024-06-03 19:18:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:15,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:18:15,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:18:15,589 INFO L175 Difference]: Start difference. First operand has 135 places, 124 transitions, 1205 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:18:15,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 141 transitions, 1651 flow [2024-06-03 19:18:15,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 141 transitions, 1562 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-03 19:18:15,607 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 1268 flow [2024-06-03 19:18:15,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2024-06-03 19:18:15,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-03 19:18:15,607 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 1268 flow [2024-06-03 19:18:15,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:15,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:15,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:15,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 19:18:15,608 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 19:18:15,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash 383553933, now seen corresponding path program 6 times [2024-06-03 19:18:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753974065] [2024-06-03 19:18:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:15,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:16,281 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 19:18:16,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:16,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753974065] [2024-06-03 19:18:16,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753974065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:16,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:16,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595667008] [2024-06-03 19:18:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:16,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:16,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:16,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 1268 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:16,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:16,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:16,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:16,574 INFO L124 PetriNetUnfolderBase]: 287/542 cut-off events. [2024-06-03 19:18:16,574 INFO L125 PetriNetUnfolderBase]: For 13388/13388 co-relation queries the response was YES. [2024-06-03 19:18:16,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3337 conditions, 542 events. 287/542 cut-off events. For 13388/13388 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2453 event pairs, 54 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 3271. Up to 482 conditions per place. [2024-06-03 19:18:16,578 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 119 selfloop transitions, 16 changer transitions 0/138 dead transitions. [2024-06-03 19:18:16,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 138 transitions, 1580 flow [2024-06-03 19:18:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:16,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 19:18:16,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-03 19:18:16,580 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 1268 flow. Second operand 9 states and 105 transitions. [2024-06-03 19:18:16,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 138 transitions, 1580 flow [2024-06-03 19:18:16,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 138 transitions, 1521 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-03 19:18:16,598 INFO L231 Difference]: Finished difference. Result has 143 places, 129 transitions, 1267 flow [2024-06-03 19:18:16,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1267, PETRI_PLACES=143, PETRI_TRANSITIONS=129} [2024-06-03 19:18:16,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-03 19:18:16,599 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 129 transitions, 1267 flow [2024-06-03 19:18:16,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:16,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:16,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:16,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 19:18:16,600 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 19:18:16,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:16,600 INFO L85 PathProgramCache]: Analyzing trace with hash 901827525, now seen corresponding path program 5 times [2024-06-03 19:18:16,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:16,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192305994] [2024-06-03 19:18:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:16,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:17,543 INFO 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 19:18:17,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:17,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192305994] [2024-06-03 19:18:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192305994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:17,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:17,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:17,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928819214] [2024-06-03 19:18:17,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:17,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:17,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:17,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 129 transitions, 1267 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:17,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:17,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:17,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:17,886 INFO L124 PetriNetUnfolderBase]: 290/549 cut-off events. [2024-06-03 19:18:17,886 INFO L125 PetriNetUnfolderBase]: For 13584/13584 co-relation queries the response was YES. [2024-06-03 19:18:17,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3401 conditions, 549 events. 290/549 cut-off events. For 13584/13584 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2510 event pairs, 44 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3333. Up to 456 conditions per place. [2024-06-03 19:18:17,890 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 33 changer transitions 0/145 dead transitions. [2024-06-03 19:18:17,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 145 transitions, 1633 flow [2024-06-03 19:18:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 19:18:17,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-03 19:18:17,893 INFO L175 Difference]: Start difference. First operand has 143 places, 129 transitions, 1267 flow. Second operand 9 states and 110 transitions. [2024-06-03 19:18:17,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 145 transitions, 1633 flow [2024-06-03 19:18:17,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 145 transitions, 1532 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-03 19:18:17,912 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 1301 flow [2024-06-03 19:18:17,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1301, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-06-03 19:18:17,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-03 19:18:17,913 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 1301 flow [2024-06-03 19:18:17,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:17,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:17,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:17,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 19:18:17,914 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 19:18:17,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash 383738383, now seen corresponding path program 6 times [2024-06-03 19:18:17,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:17,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303129255] [2024-06-03 19:18:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:17,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:18,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:18,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303129255] [2024-06-03 19:18:18,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303129255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:18,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:18,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:18,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139805994] [2024-06-03 19:18:18,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:18,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:18,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:18,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:18,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:18,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 1301 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:18,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:18,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:18,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:19,286 INFO L124 PetriNetUnfolderBase]: 307/582 cut-off events. [2024-06-03 19:18:19,287 INFO L125 PetriNetUnfolderBase]: For 16505/16505 co-relation queries the response was YES. [2024-06-03 19:18:19,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 582 events. 307/582 cut-off events. For 16505/16505 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2711 event pairs, 52 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3704. Up to 438 conditions per place. [2024-06-03 19:18:19,291 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 46 changer transitions 0/150 dead transitions. [2024-06-03 19:18:19,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 150 transitions, 1797 flow [2024-06-03 19:18:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:18:19,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-03 19:18:19,292 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 1301 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:18:19,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 150 transitions, 1797 flow [2024-06-03 19:18:19,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 150 transitions, 1702 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:19,316 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 1419 flow [2024-06-03 19:18:19,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1419, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2024-06-03 19:18:19,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-03 19:18:19,317 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 1419 flow [2024-06-03 19:18:19,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:19,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:19,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:19,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 19:18:19,318 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 19:18:19,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash 383738631, now seen corresponding path program 2 times [2024-06-03 19:18:19,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:19,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515339654] [2024-06-03 19:18:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:19,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:20,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:20,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515339654] [2024-06-03 19:18:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515339654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:20,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:20,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:20,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021890347] [2024-06-03 19:18:20,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:20,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:20,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:20,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:20,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:20,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 1419 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:20,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:20,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:20,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:20,566 INFO L124 PetriNetUnfolderBase]: 302/573 cut-off events. [2024-06-03 19:18:20,567 INFO L125 PetriNetUnfolderBase]: For 16626/16626 co-relation queries the response was YES. [2024-06-03 19:18:20,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3707 conditions, 573 events. 302/573 cut-off events. For 16626/16626 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2655 event pairs, 53 based on Foata normal form. 2/575 useless extension candidates. Maximal degree in co-relation 3640. Up to 471 conditions per place. [2024-06-03 19:18:20,571 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 34 changer transitions 0/148 dead transitions. [2024-06-03 19:18:20,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 148 transitions, 1733 flow [2024-06-03 19:18:20,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:20,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:18:20,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-03 19:18:20,589 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 1419 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:18:20,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 148 transitions, 1733 flow [2024-06-03 19:18:20,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 148 transitions, 1622 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-03 19:18:20,612 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 1386 flow [2024-06-03 19:18:20,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1386, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2024-06-03 19:18:20,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-03 19:18:20,612 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 1386 flow [2024-06-03 19:18:20,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:20,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:20,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:20,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 19:18:20,613 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 19:18:20,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash 383731873, now seen corresponding path program 7 times [2024-06-03 19:18:20,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:20,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366515515] [2024-06-03 19:18:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:20,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:21,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:21,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366515515] [2024-06-03 19:18:21,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366515515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:21,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:21,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:21,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389284044] [2024-06-03 19:18:21,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:21,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:21,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 1386 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:21,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:21,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:21,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:22,282 INFO L124 PetriNetUnfolderBase]: 300/570 cut-off events. [2024-06-03 19:18:22,282 INFO L125 PetriNetUnfolderBase]: For 14469/14469 co-relation queries the response was YES. [2024-06-03 19:18:22,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3599 conditions, 570 events. 300/570 cut-off events. For 14469/14469 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2645 event pairs, 52 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 3531. Up to 462 conditions per place. [2024-06-03 19:18:22,286 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 38 changer transitions 0/151 dead transitions. [2024-06-03 19:18:22,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 151 transitions, 1761 flow [2024-06-03 19:18:22,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:18:22,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-03 19:18:22,287 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 1386 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:18:22,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 151 transitions, 1761 flow [2024-06-03 19:18:22,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 151 transitions, 1648 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:22,311 INFO L231 Difference]: Finished difference. Result has 148 places, 141 transitions, 1430 flow [2024-06-03 19:18:22,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2024-06-03 19:18:22,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-03 19:18:22,311 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 1430 flow [2024-06-03 19:18:22,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:22,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:22,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:22,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 19:18:22,312 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 19:18:22,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:22,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1191747187, now seen corresponding path program 7 times [2024-06-03 19:18:22,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:22,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049344859] [2024-06-03 19:18:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:22,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:22,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049344859] [2024-06-03 19:18:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049344859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:22,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:22,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:18:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585300910] [2024-06-03 19:18:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:22,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:18:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:18:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:18:23,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:23,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 1430 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:23,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:23,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:23,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:23,226 INFO L124 PetriNetUnfolderBase]: 297/565 cut-off events. [2024-06-03 19:18:23,226 INFO L125 PetriNetUnfolderBase]: For 14643/14643 co-relation queries the response was YES. [2024-06-03 19:18:23,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3534 conditions, 565 events. 297/565 cut-off events. For 14643/14643 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2619 event pairs, 54 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3464. Up to 484 conditions per place. [2024-06-03 19:18:23,230 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 126 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-06-03 19:18:23,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 150 transitions, 1750 flow [2024-06-03 19:18:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:18:23,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:18:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-03 19:18:23,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-03 19:18:23,234 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 1430 flow. Second operand 8 states and 97 transitions. [2024-06-03 19:18:23,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 150 transitions, 1750 flow [2024-06-03 19:18:23,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 150 transitions, 1653 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:23,259 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 1387 flow [2024-06-03 19:18:23,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1387, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2024-06-03 19:18:23,260 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-03 19:18:23,260 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 1387 flow [2024-06-03 19:18:23,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:23,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:23,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:23,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 19:18:23,261 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 19:18:23,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:23,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1243274467, now seen corresponding path program 8 times [2024-06-03 19:18:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:23,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721631806] [2024-06-03 19:18:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:23,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:24,415 INFO 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 19:18:24,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:24,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721631806] [2024-06-03 19:18:24,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721631806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:24,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:24,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:24,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702587929] [2024-06-03 19:18:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:24,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:24,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:24,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:24,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:24,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:24,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 1387 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:24,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:24,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:24,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:24,675 INFO L124 PetriNetUnfolderBase]: 313/593 cut-off events. [2024-06-03 19:18:24,675 INFO L125 PetriNetUnfolderBase]: For 16440/16440 co-relation queries the response was YES. [2024-06-03 19:18:24,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 593 events. 313/593 cut-off events. For 16440/16440 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2785 event pairs, 54 based on Foata normal form. 2/595 useless extension candidates. Maximal degree in co-relation 3742. Up to 478 conditions per place. [2024-06-03 19:18:24,679 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 31 changer transitions 0/157 dead transitions. [2024-06-03 19:18:24,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 157 transitions, 1903 flow [2024-06-03 19:18:24,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:18:24,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-03 19:18:24,680 INFO L175 Difference]: Start difference. First operand has 149 places, 142 transitions, 1387 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:18:24,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 157 transitions, 1903 flow [2024-06-03 19:18:24,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 157 transitions, 1804 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:24,705 INFO L231 Difference]: Finished difference. Result has 151 places, 147 transitions, 1468 flow [2024-06-03 19:18:24,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1468, PETRI_PLACES=151, PETRI_TRANSITIONS=147} [2024-06-03 19:18:24,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-03 19:18:24,706 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 147 transitions, 1468 flow [2024-06-03 19:18:24,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:24,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:24,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:24,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 19:18:24,707 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 19:18:24,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:24,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1243280977, now seen corresponding path program 9 times [2024-06-03 19:18:24,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:24,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209433825] [2024-06-03 19:18:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:25,887 INFO 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 19:18:25,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209433825] [2024-06-03 19:18:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209433825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:25,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:25,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182771529] [2024-06-03 19:18:25,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:25,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:26,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:26,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 147 transitions, 1468 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:26,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:26,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:26,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:26,291 INFO L124 PetriNetUnfolderBase]: 311/590 cut-off events. [2024-06-03 19:18:26,291 INFO L125 PetriNetUnfolderBase]: For 16034/16034 co-relation queries the response was YES. [2024-06-03 19:18:26,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3787 conditions, 590 events. 311/590 cut-off events. For 16034/16034 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2768 event pairs, 54 based on Foata normal form. 1/591 useless extension candidates. Maximal degree in co-relation 3716. Up to 492 conditions per place. [2024-06-03 19:18:26,295 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 128 selfloop transitions, 30 changer transitions 0/161 dead transitions. [2024-06-03 19:18:26,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 161 transitions, 1928 flow [2024-06-03 19:18:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:26,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-03 19:18:26,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-03 19:18:26,309 INFO L175 Difference]: Start difference. First operand has 151 places, 147 transitions, 1468 flow. Second operand 9 states and 111 transitions. [2024-06-03 19:18:26,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 161 transitions, 1928 flow [2024-06-03 19:18:26,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 161 transitions, 1802 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-03 19:18:26,339 INFO L231 Difference]: Finished difference. Result has 157 places, 153 transitions, 1556 flow [2024-06-03 19:18:26,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1556, PETRI_PLACES=157, PETRI_TRANSITIONS=153} [2024-06-03 19:18:26,341 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-03 19:18:26,341 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 153 transitions, 1556 flow [2024-06-03 19:18:26,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:26,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:26,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:26,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 19:18:26,342 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 19:18:26,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:26,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1237024867, now seen corresponding path program 10 times [2024-06-03 19:18:26,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:26,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807619128] [2024-06-03 19:18:26,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:26,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:27,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807619128] [2024-06-03 19:18:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807619128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:27,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164419705] [2024-06-03 19:18:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:27,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:27,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:27,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 153 transitions, 1556 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:27,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:27,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:27,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:27,748 INFO L124 PetriNetUnfolderBase]: 314/597 cut-off events. [2024-06-03 19:18:27,748 INFO L125 PetriNetUnfolderBase]: For 16712/16712 co-relation queries the response was YES. [2024-06-03 19:18:27,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 597 events. 314/597 cut-off events. For 16712/16712 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2825 event pairs, 54 based on Foata normal form. 1/598 useless extension candidates. Maximal degree in co-relation 3791. Up to 428 conditions per place. [2024-06-03 19:18:27,752 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 56 changer transitions 0/168 dead transitions. [2024-06-03 19:18:27,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 168 transitions, 2111 flow [2024-06-03 19:18:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-03 19:18:27,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-03 19:18:27,771 INFO L175 Difference]: Start difference. First operand has 157 places, 153 transitions, 1556 flow. Second operand 9 states and 113 transitions. [2024-06-03 19:18:27,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 168 transitions, 2111 flow [2024-06-03 19:18:27,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 168 transitions, 2027 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-03 19:18:27,800 INFO L231 Difference]: Finished difference. Result has 163 places, 159 transitions, 1735 flow [2024-06-03 19:18:27,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1735, PETRI_PLACES=163, PETRI_TRANSITIONS=159} [2024-06-03 19:18:27,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-03 19:18:27,801 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 159 transitions, 1735 flow [2024-06-03 19:18:27,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:27,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:27,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:27,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 19:18:27,801 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 19:18:27,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash -963661587, now seen corresponding path program 11 times [2024-06-03 19:18:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:27,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856687633] [2024-06-03 19:18:27,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:27,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:28,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:28,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856687633] [2024-06-03 19:18:28,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856687633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:28,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:28,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:28,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448065892] [2024-06-03 19:18:28,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:28,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:28,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:28,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:29,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:29,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 159 transitions, 1735 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:29,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:29,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:29,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:29,341 INFO L124 PetriNetUnfolderBase]: 317/604 cut-off events. [2024-06-03 19:18:29,342 INFO L125 PetriNetUnfolderBase]: For 17850/17850 co-relation queries the response was YES. [2024-06-03 19:18:29,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 604 events. 317/604 cut-off events. For 17850/17850 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2881 event pairs, 54 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 3944. Up to 432 conditions per place. [2024-06-03 19:18:29,346 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 57 changer transitions 0/170 dead transitions. [2024-06-03 19:18:29,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 170 transitions, 2221 flow [2024-06-03 19:18:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:29,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 19:18:29,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-03 19:18:29,348 INFO L175 Difference]: Start difference. First operand has 163 places, 159 transitions, 1735 flow. Second operand 9 states and 114 transitions. [2024-06-03 19:18:29,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 170 transitions, 2221 flow [2024-06-03 19:18:29,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 170 transitions, 2041 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-03 19:18:29,379 INFO L231 Difference]: Finished difference. Result has 167 places, 161 transitions, 1732 flow [2024-06-03 19:18:29,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1732, PETRI_PLACES=167, PETRI_TRANSITIONS=161} [2024-06-03 19:18:29,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-03 19:18:29,380 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 161 transitions, 1732 flow [2024-06-03 19:18:29,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:29,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:29,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:29,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 19:18:29,381 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 19:18:29,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:29,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1006802189, now seen corresponding path program 3 times [2024-06-03 19:18:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412570553] [2024-06-03 19:18:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:29,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:30,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:30,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412570553] [2024-06-03 19:18:30,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412570553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:30,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:30,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531540150] [2024-06-03 19:18:30,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:30,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:30,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:30,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:30,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 161 transitions, 1732 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:30,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:30,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:30,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:30,735 INFO L124 PetriNetUnfolderBase]: 320/608 cut-off events. [2024-06-03 19:18:30,736 INFO L125 PetriNetUnfolderBase]: For 17893/17893 co-relation queries the response was YES. [2024-06-03 19:18:30,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4010 conditions, 608 events. 320/608 cut-off events. For 17893/17893 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2881 event pairs, 76 based on Foata normal form. 1/609 useless extension candidates. Maximal degree in co-relation 3931. Up to 538 conditions per place. [2024-06-03 19:18:30,740 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 19 changer transitions 0/173 dead transitions. [2024-06-03 19:18:30,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 173 transitions, 2190 flow [2024-06-03 19:18:30,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:30,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-03 19:18:30,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-03 19:18:30,741 INFO L175 Difference]: Start difference. First operand has 167 places, 161 transitions, 1732 flow. Second operand 10 states and 116 transitions. [2024-06-03 19:18:30,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 173 transitions, 2190 flow [2024-06-03 19:18:30,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 173 transitions, 2045 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-03 19:18:30,772 INFO L231 Difference]: Finished difference. Result has 171 places, 163 transitions, 1650 flow [2024-06-03 19:18:30,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1650, PETRI_PLACES=171, PETRI_TRANSITIONS=163} [2024-06-03 19:18:30,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-03 19:18:30,773 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 163 transitions, 1650 flow [2024-06-03 19:18:30,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:30,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:30,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:30,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 19:18:30,774 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 19:18:30,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:30,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1007099107, now seen corresponding path program 12 times [2024-06-03 19:18:30,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:30,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968516660] [2024-06-03 19:18:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:30,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:31,966 INFO 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 19:18:31,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:31,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968516660] [2024-06-03 19:18:31,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968516660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:31,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:31,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:31,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621128923] [2024-06-03 19:18:31,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:31,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:31,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:32,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:32,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 163 transitions, 1650 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:32,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:32,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:32,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:32,363 INFO L124 PetriNetUnfolderBase]: 318/605 cut-off events. [2024-06-03 19:18:32,364 INFO L125 PetriNetUnfolderBase]: For 17507/17507 co-relation queries the response was YES. [2024-06-03 19:18:32,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3841 conditions, 605 events. 318/605 cut-off events. For 17507/17507 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2855 event pairs, 76 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 3762. Up to 542 conditions per place. [2024-06-03 19:18:32,368 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 15 changer transitions 0/171 dead transitions. [2024-06-03 19:18:32,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 2004 flow [2024-06-03 19:18:32,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 19:18:32,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-03 19:18:32,387 INFO L175 Difference]: Start difference. First operand has 171 places, 163 transitions, 1650 flow. Second operand 9 states and 104 transitions. [2024-06-03 19:18:32,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 2004 flow [2024-06-03 19:18:32,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 171 transitions, 1924 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:32,420 INFO L231 Difference]: Finished difference. Result has 172 places, 163 transitions, 1605 flow [2024-06-03 19:18:32,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1605, PETRI_PLACES=172, PETRI_TRANSITIONS=163} [2024-06-03 19:18:32,421 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-03 19:18:32,421 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 163 transitions, 1605 flow [2024-06-03 19:18:32,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:32,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:32,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:32,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 19:18:32,421 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 19:18:32,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:32,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1007098859, now seen corresponding path program 4 times [2024-06-03 19:18:32,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067834385] [2024-06-03 19:18:32,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:33,808 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 19:18:33,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:33,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067834385] [2024-06-03 19:18:33,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067834385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:33,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:33,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:33,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402924189] [2024-06-03 19:18:33,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:33,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:33,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:33,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:33,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:33,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 163 transitions, 1605 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:33,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:33,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:33,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:34,274 INFO L124 PetriNetUnfolderBase]: 316/602 cut-off events. [2024-06-03 19:18:34,274 INFO L125 PetriNetUnfolderBase]: For 17206/17206 co-relation queries the response was YES. [2024-06-03 19:18:34,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 602 events. 316/602 cut-off events. For 17206/17206 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2858 event pairs, 76 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 3675. Up to 539 conditions per place. [2024-06-03 19:18:34,278 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 15 changer transitions 0/171 dead transitions. [2024-06-03 19:18:34,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 171 transitions, 1959 flow [2024-06-03 19:18:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-03 19:18:34,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-03 19:18:34,288 INFO L175 Difference]: Start difference. First operand has 172 places, 163 transitions, 1605 flow. Second operand 9 states and 104 transitions. [2024-06-03 19:18:34,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 171 transitions, 1959 flow [2024-06-03 19:18:34,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 171 transitions, 1901 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 19:18:34,325 INFO L231 Difference]: Finished difference. Result has 172 places, 163 transitions, 1582 flow [2024-06-03 19:18:34,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=172, PETRI_TRANSITIONS=163} [2024-06-03 19:18:34,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-03 19:18:34,326 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 163 transitions, 1582 flow [2024-06-03 19:18:34,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:34,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:34,326 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 19:18:34,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 19:18:34,327 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 19:18:34,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash 960608963, now seen corresponding path program 1 times [2024-06-03 19:18:34,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:34,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824920292] [2024-06-03 19:18:34,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:34,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:35,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:35,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824920292] [2024-06-03 19:18:35,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824920292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:35,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:35,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:35,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264980296] [2024-06-03 19:18:35,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:35,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:35,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:35,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:35,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:35,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:35,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 163 transitions, 1582 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:35,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:35,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:35,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:35,568 INFO L124 PetriNetUnfolderBase]: 329/632 cut-off events. [2024-06-03 19:18:35,568 INFO L125 PetriNetUnfolderBase]: For 18980/18980 co-relation queries the response was YES. [2024-06-03 19:18:35,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 632 events. 329/632 cut-off events. For 18980/18980 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3086 event pairs, 44 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 3764. Up to 528 conditions per place. [2024-06-03 19:18:35,573 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 160 selfloop transitions, 21 changer transitions 0/184 dead transitions. [2024-06-03 19:18:35,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 184 transitions, 2010 flow [2024-06-03 19:18:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:35,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:35,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 19:18:35,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-03 19:18:35,575 INFO L175 Difference]: Start difference. First operand has 172 places, 163 transitions, 1582 flow. Second operand 10 states and 122 transitions. [2024-06-03 19:18:35,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 184 transitions, 2010 flow [2024-06-03 19:18:35,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 184 transitions, 1973 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:35,614 INFO L231 Difference]: Finished difference. Result has 176 places, 166 transitions, 1621 flow [2024-06-03 19:18:35,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1621, PETRI_PLACES=176, PETRI_TRANSITIONS=166} [2024-06-03 19:18:35,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-03 19:18:35,614 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 166 transitions, 1621 flow [2024-06-03 19:18:35,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:35,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:35,615 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 19:18:35,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 19:18:35,615 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 19:18:35,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1713289199, now seen corresponding path program 2 times [2024-06-03 19:18:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:35,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213612586] [2024-06-03 19:18:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:36,660 INFO 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 19:18:36,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:36,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213612586] [2024-06-03 19:18:36,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213612586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:36,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:36,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:36,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347751111] [2024-06-03 19:18:36,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:36,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:36,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:36,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:36,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:36,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:36,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 166 transitions, 1621 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:36,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:36,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:36,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:37,024 INFO L124 PetriNetUnfolderBase]: 333/640 cut-off events. [2024-06-03 19:18:37,024 INFO L125 PetriNetUnfolderBase]: For 19711/19711 co-relation queries the response was YES. [2024-06-03 19:18:37,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 640 events. 333/640 cut-off events. For 19711/19711 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3124 event pairs, 51 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 3866. Up to 545 conditions per place. [2024-06-03 19:18:37,029 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 22 changer transitions 0/183 dead transitions. [2024-06-03 19:18:37,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 2035 flow [2024-06-03 19:18:37,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:37,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:37,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:18:37,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-03 19:18:37,031 INFO L175 Difference]: Start difference. First operand has 176 places, 166 transitions, 1621 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:18:37,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 2035 flow [2024-06-03 19:18:37,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 183 transitions, 1989 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-03 19:18:37,072 INFO L231 Difference]: Finished difference. Result has 180 places, 167 transitions, 1639 flow [2024-06-03 19:18:37,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1639, PETRI_PLACES=180, PETRI_TRANSITIONS=167} [2024-06-03 19:18:37,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-03 19:18:37,073 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 167 transitions, 1639 flow [2024-06-03 19:18:37,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:37,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:37,073 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 19:18:37,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 19:18:37,073 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 19:18:37,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1690798079, now seen corresponding path program 3 times [2024-06-03 19:18:37,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:37,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967125365] [2024-06-03 19:18:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:37,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:37,956 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 19:18:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967125365] [2024-06-03 19:18:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967125365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:37,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:37,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:37,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038331041] [2024-06-03 19:18:37,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:37,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:37,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:37,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:37,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:38,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:38,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 167 transitions, 1639 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:38,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:38,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:38,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:38,321 INFO L124 PetriNetUnfolderBase]: 337/648 cut-off events. [2024-06-03 19:18:38,321 INFO L125 PetriNetUnfolderBase]: For 20930/20930 co-relation queries the response was YES. [2024-06-03 19:18:38,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 648 events. 337/648 cut-off events. For 20930/20930 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3186 event pairs, 57 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 3929. Up to 558 conditions per place. [2024-06-03 19:18:38,326 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 157 selfloop transitions, 23 changer transitions 0/183 dead transitions. [2024-06-03 19:18:38,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 183 transitions, 2053 flow [2024-06-03 19:18:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:18:38,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-03 19:18:38,327 INFO L175 Difference]: Start difference. First operand has 180 places, 167 transitions, 1639 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:18:38,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 183 transitions, 2053 flow [2024-06-03 19:18:38,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 183 transitions, 1999 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:38,371 INFO L231 Difference]: Finished difference. Result has 182 places, 168 transitions, 1653 flow [2024-06-03 19:18:38,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1653, PETRI_PLACES=182, PETRI_TRANSITIONS=168} [2024-06-03 19:18:38,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-03 19:18:38,372 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 168 transitions, 1653 flow [2024-06-03 19:18:38,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:38,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:38,372 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 19:18:38,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 19:18:38,373 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 19:18:38,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:38,373 INFO L85 PathProgramCache]: Analyzing trace with hash 935085345, now seen corresponding path program 4 times [2024-06-03 19:18:38,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571650141] [2024-06-03 19:18:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:38,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:39,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:39,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571650141] [2024-06-03 19:18:39,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571650141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:39,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:39,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:39,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528297704] [2024-06-03 19:18:39,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:39,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:39,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:39,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:39,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:39,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 168 transitions, 1653 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:39,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:39,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:39,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:39,534 INFO L124 PetriNetUnfolderBase]: 350/675 cut-off events. [2024-06-03 19:18:39,534 INFO L125 PetriNetUnfolderBase]: For 21850/21850 co-relation queries the response was YES. [2024-06-03 19:18:39,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 675 events. 350/675 cut-off events. For 21850/21850 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3383 event pairs, 31 based on Foata normal form. 2/677 useless extension candidates. Maximal degree in co-relation 4043. Up to 543 conditions per place. [2024-06-03 19:18:39,539 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 163 selfloop transitions, 23 changer transitions 0/189 dead transitions. [2024-06-03 19:18:39,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 189 transitions, 2099 flow [2024-06-03 19:18:39,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:18:39,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:18:39,541 INFO L175 Difference]: Start difference. First operand has 182 places, 168 transitions, 1653 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:18:39,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 189 transitions, 2099 flow [2024-06-03 19:18:39,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 189 transitions, 2041 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:39,605 INFO L231 Difference]: Finished difference. Result has 185 places, 171 transitions, 1681 flow [2024-06-03 19:18:39,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1681, PETRI_PLACES=185, PETRI_TRANSITIONS=171} [2024-06-03 19:18:39,605 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-03 19:18:39,606 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 171 transitions, 1681 flow [2024-06-03 19:18:39,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:39,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:39,606 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 19:18:39,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 19:18:39,606 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 19:18:39,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:39,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2137785535, now seen corresponding path program 5 times [2024-06-03 19:18:39,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:39,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555492867] [2024-06-03 19:18:39,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:39,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:40,475 INFO 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 19:18:40,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:40,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555492867] [2024-06-03 19:18:40,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555492867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:40,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:40,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840123908] [2024-06-03 19:18:40,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:40,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:40,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:40,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:40,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:40,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:40,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 171 transitions, 1681 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:40,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:40,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:40,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:40,799 INFO L124 PetriNetUnfolderBase]: 363/702 cut-off events. [2024-06-03 19:18:40,800 INFO L125 PetriNetUnfolderBase]: For 22877/22877 co-relation queries the response was YES. [2024-06-03 19:18:40,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4267 conditions, 702 events. 363/702 cut-off events. For 22877/22877 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3578 event pairs, 42 based on Foata normal form. 2/704 useless extension candidates. Maximal degree in co-relation 4180. Up to 598 conditions per place. [2024-06-03 19:18:40,805 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 168 selfloop transitions, 20 changer transitions 0/191 dead transitions. [2024-06-03 19:18:40,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 191 transitions, 2137 flow [2024-06-03 19:18:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 19:18:40,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-03 19:18:40,806 INFO L175 Difference]: Start difference. First operand has 185 places, 171 transitions, 1681 flow. Second operand 10 states and 122 transitions. [2024-06-03 19:18:40,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 191 transitions, 2137 flow [2024-06-03 19:18:40,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 191 transitions, 2066 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:40,856 INFO L231 Difference]: Finished difference. Result has 190 places, 174 transitions, 1700 flow [2024-06-03 19:18:40,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1700, PETRI_PLACES=190, PETRI_TRANSITIONS=174} [2024-06-03 19:18:40,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-03 19:18:40,857 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 174 transitions, 1700 flow [2024-06-03 19:18:40,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:40,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:40,857 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 19:18:40,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 19:18:40,858 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 19:18:40,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:40,858 INFO L85 PathProgramCache]: Analyzing trace with hash 2139659485, now seen corresponding path program 6 times [2024-06-03 19:18:40,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:40,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041843401] [2024-06-03 19:18:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:40,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:41,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:41,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041843401] [2024-06-03 19:18:41,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041843401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:41,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:41,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:41,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954227060] [2024-06-03 19:18:41,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:41,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:41,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:41,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:41,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:41,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:41,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 174 transitions, 1700 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:41,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:41,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:41,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:42,211 INFO L124 PetriNetUnfolderBase]: 367/710 cut-off events. [2024-06-03 19:18:42,212 INFO L125 PetriNetUnfolderBase]: For 23939/23939 co-relation queries the response was YES. [2024-06-03 19:18:42,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4313 conditions, 710 events. 367/710 cut-off events. For 23939/23939 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3634 event pairs, 44 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 4224. Up to 615 conditions per place. [2024-06-03 19:18:42,216 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 166 selfloop transitions, 21 changer transitions 0/190 dead transitions. [2024-06-03 19:18:42,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 190 transitions, 2134 flow [2024-06-03 19:18:42,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:42,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:18:42,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-03 19:18:42,217 INFO L175 Difference]: Start difference. First operand has 190 places, 174 transitions, 1700 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:18:42,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 190 transitions, 2134 flow [2024-06-03 19:18:42,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 190 transitions, 2076 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 19:18:42,272 INFO L231 Difference]: Finished difference. Result has 194 places, 175 transitions, 1712 flow [2024-06-03 19:18:42,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1712, PETRI_PLACES=194, PETRI_TRANSITIONS=175} [2024-06-03 19:18:42,273 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-03 19:18:42,273 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 175 transitions, 1712 flow [2024-06-03 19:18:42,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:42,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:42,274 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 19:18:42,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 19:18:42,275 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 19:18:42,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2068468131, now seen corresponding path program 7 times [2024-06-03 19:18:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:42,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85084663] [2024-06-03 19:18:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:42,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:43,229 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 19:18:43,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:43,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85084663] [2024-06-03 19:18:43,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85084663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:43,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:43,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:43,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450397690] [2024-06-03 19:18:43,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:43,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:43,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:43,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:43,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:43,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 175 transitions, 1712 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:43,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:43,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:43,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:43,575 INFO L124 PetriNetUnfolderBase]: 371/718 cut-off events. [2024-06-03 19:18:43,576 INFO L125 PetriNetUnfolderBase]: For 24996/24996 co-relation queries the response was YES. [2024-06-03 19:18:43,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4365 conditions, 718 events. 371/718 cut-off events. For 24996/24996 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3710 event pairs, 46 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4275. Up to 628 conditions per place. [2024-06-03 19:18:43,581 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 165 selfloop transitions, 22 changer transitions 0/190 dead transitions. [2024-06-03 19:18:43,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 190 transitions, 2146 flow [2024-06-03 19:18:43,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:43,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:18:43,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-03 19:18:43,582 INFO L175 Difference]: Start difference. First operand has 194 places, 175 transitions, 1712 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:18:43,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 190 transitions, 2146 flow [2024-06-03 19:18:43,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 190 transitions, 2086 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:43,636 INFO L231 Difference]: Finished difference. Result has 196 places, 176 transitions, 1726 flow [2024-06-03 19:18:43,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1726, PETRI_PLACES=196, PETRI_TRANSITIONS=176} [2024-06-03 19:18:43,637 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-03 19:18:43,637 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 176 transitions, 1726 flow [2024-06-03 19:18:43,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:43,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:43,637 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 19:18:43,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 19:18:43,638 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 19:18:43,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:43,638 INFO L85 PathProgramCache]: Analyzing trace with hash -291862919, now seen corresponding path program 8 times [2024-06-03 19:18:43,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:43,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886854827] [2024-06-03 19:18:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:43,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:44,748 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 19:18:44,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:44,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886854827] [2024-06-03 19:18:44,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886854827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:44,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:44,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762764298] [2024-06-03 19:18:44,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:44,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:44,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:44,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:44,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 176 transitions, 1726 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:44,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:44,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:44,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:45,070 INFO L124 PetriNetUnfolderBase]: 375/726 cut-off events. [2024-06-03 19:18:45,070 INFO L125 PetriNetUnfolderBase]: For 26092/26092 co-relation queries the response was YES. [2024-06-03 19:18:45,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 726 events. 375/726 cut-off events. For 26092/26092 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3780 event pairs, 74 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4331. Up to 643 conditions per place. [2024-06-03 19:18:45,075 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 167 selfloop transitions, 20 changer transitions 0/190 dead transitions. [2024-06-03 19:18:45,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 190 transitions, 2158 flow [2024-06-03 19:18:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:18:45,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:18:45,076 INFO L175 Difference]: Start difference. First operand has 196 places, 176 transitions, 1726 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:18:45,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 190 transitions, 2158 flow [2024-06-03 19:18:45,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 190 transitions, 2094 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:45,133 INFO L231 Difference]: Finished difference. Result has 198 places, 177 transitions, 1734 flow [2024-06-03 19:18:45,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1734, PETRI_PLACES=198, PETRI_TRANSITIONS=177} [2024-06-03 19:18:45,134 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-03 19:18:45,134 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 177 transitions, 1734 flow [2024-06-03 19:18:45,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:45,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:45,134 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 19:18:45,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 19:18:45,134 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 19:18:45,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash -297225299, now seen corresponding path program 9 times [2024-06-03 19:18:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:45,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412479072] [2024-06-03 19:18:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:45,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:46,006 INFO 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 19:18:46,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:46,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412479072] [2024-06-03 19:18:46,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412479072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:46,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:46,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:46,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128456547] [2024-06-03 19:18:46,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:46,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:46,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:46,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:46,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:46,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:46,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 177 transitions, 1734 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:46,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:46,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:46,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:46,409 INFO L124 PetriNetUnfolderBase]: 379/734 cut-off events. [2024-06-03 19:18:46,409 INFO L125 PetriNetUnfolderBase]: For 27014/27014 co-relation queries the response was YES. [2024-06-03 19:18:46,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 734 events. 379/734 cut-off events. For 27014/27014 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3837 event pairs, 76 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4382. Up to 657 conditions per place. [2024-06-03 19:18:46,414 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 171 selfloop transitions, 18 changer transitions 0/192 dead transitions. [2024-06-03 19:18:46,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 192 transitions, 2188 flow [2024-06-03 19:18:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:18:46,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-03 19:18:46,415 INFO L175 Difference]: Start difference. First operand has 198 places, 177 transitions, 1734 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:18:46,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 192 transitions, 2188 flow [2024-06-03 19:18:46,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 192 transitions, 2120 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:46,479 INFO L231 Difference]: Finished difference. Result has 201 places, 179 transitions, 1757 flow [2024-06-03 19:18:46,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=201, PETRI_TRANSITIONS=179} [2024-06-03 19:18:46,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-03 19:18:46,479 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 179 transitions, 1757 flow [2024-06-03 19:18:46,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:46,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:46,480 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 19:18:46,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 19:18:46,480 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 19:18:46,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash -297373169, now seen corresponding path program 10 times [2024-06-03 19:18:46,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:46,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114570995] [2024-06-03 19:18:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:46,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:47,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:47,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114570995] [2024-06-03 19:18:47,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114570995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:47,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:47,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:47,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408294820] [2024-06-03 19:18:47,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:47,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:47,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:47,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:47,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:47,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 179 transitions, 1757 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:47,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:47,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:47,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:47,741 INFO L124 PetriNetUnfolderBase]: 383/742 cut-off events. [2024-06-03 19:18:47,742 INFO L125 PetriNetUnfolderBase]: For 28152/28152 co-relation queries the response was YES. [2024-06-03 19:18:47,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4528 conditions, 742 events. 383/742 cut-off events. For 28152/28152 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3880 event pairs, 76 based on Foata normal form. 2/744 useless extension candidates. Maximal degree in co-relation 4434. Up to 660 conditions per place. [2024-06-03 19:18:47,748 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 17 changer transitions 0/194 dead transitions. [2024-06-03 19:18:47,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 194 transitions, 2203 flow [2024-06-03 19:18:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:18:47,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:18:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:18:47,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-03 19:18:47,750 INFO L175 Difference]: Start difference. First operand has 201 places, 179 transitions, 1757 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:18:47,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 194 transitions, 2203 flow [2024-06-03 19:18:47,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 194 transitions, 2146 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:47,829 INFO L231 Difference]: Finished difference. Result has 204 places, 180 transitions, 1770 flow [2024-06-03 19:18:47,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1770, PETRI_PLACES=204, PETRI_TRANSITIONS=180} [2024-06-03 19:18:47,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-03 19:18:47,830 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 180 transitions, 1770 flow [2024-06-03 19:18:47,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:47,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:47,830 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 19:18:47,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 19:18:47,831 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 19:18:47,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:47,833 INFO L85 PathProgramCache]: Analyzing trace with hash 835380139, now seen corresponding path program 1 times [2024-06-03 19:18:47,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:47,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565217834] [2024-06-03 19:18:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:47,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:49,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:49,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565217834] [2024-06-03 19:18:49,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565217834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:49,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:49,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:18:49,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226268372] [2024-06-03 19:18:49,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:49,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:18:49,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:49,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:18:49,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:18:49,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:49,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 180 transitions, 1770 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:49,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:49,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:49,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:50,499 INFO L124 PetriNetUnfolderBase]: 386/746 cut-off events. [2024-06-03 19:18:50,499 INFO L125 PetriNetUnfolderBase]: For 27754/27754 co-relation queries the response was YES. [2024-06-03 19:18:50,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4560 conditions, 746 events. 386/746 cut-off events. For 27754/27754 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3914 event pairs, 52 based on Foata normal form. 1/747 useless extension candidates. Maximal degree in co-relation 4465. Up to 621 conditions per place. [2024-06-03 19:18:50,504 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 41 changer transitions 0/196 dead transitions. [2024-06-03 19:18:50,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 196 transitions, 2238 flow [2024-06-03 19:18:50,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:18:50,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:18:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:18:50,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-03 19:18:50,506 INFO L175 Difference]: Start difference. First operand has 204 places, 180 transitions, 1770 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:18:50,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 196 transitions, 2238 flow [2024-06-03 19:18:50,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 196 transitions, 2178 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:50,578 INFO L231 Difference]: Finished difference. Result has 208 places, 183 transitions, 1867 flow [2024-06-03 19:18:50,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1867, PETRI_PLACES=208, PETRI_TRANSITIONS=183} [2024-06-03 19:18:50,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-03 19:18:50,579 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 183 transitions, 1867 flow [2024-06-03 19:18:50,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:50,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:50,580 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 19:18:50,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 19:18:50,580 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 19:18:50,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:50,580 INFO L85 PathProgramCache]: Analyzing trace with hash 835589668, now seen corresponding path program 1 times [2024-06-03 19:18:50,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:50,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164989710] [2024-06-03 19:18:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:51,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:51,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:51,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164989710] [2024-06-03 19:18:51,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164989710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:51,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:51,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:18:51,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589945816] [2024-06-03 19:18:51,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:51,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:18:51,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:51,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:18:51,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:18:51,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:51,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 183 transitions, 1867 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:51,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:51,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:51,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:52,069 INFO L124 PetriNetUnfolderBase]: 406/791 cut-off events. [2024-06-03 19:18:52,070 INFO L125 PetriNetUnfolderBase]: For 43078/43078 co-relation queries the response was YES. [2024-06-03 19:18:52,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4853 conditions, 791 events. 406/791 cut-off events. For 43078/43078 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4234 event pairs, 82 based on Foata normal form. 12/803 useless extension candidates. Maximal degree in co-relation 4756. Up to 657 conditions per place. [2024-06-03 19:18:52,078 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 22 changer transitions 7/202 dead transitions. [2024-06-03 19:18:52,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 202 transitions, 2385 flow [2024-06-03 19:18:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:18:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:18:52,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-03 19:18:52,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-03 19:18:52,093 INFO L175 Difference]: Start difference. First operand has 208 places, 183 transitions, 1867 flow. Second operand 11 states and 136 transitions. [2024-06-03 19:18:52,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 202 transitions, 2385 flow [2024-06-03 19:18:52,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 202 transitions, 2286 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 19:18:52,173 INFO L231 Difference]: Finished difference. Result has 211 places, 181 transitions, 1789 flow [2024-06-03 19:18:52,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1789, PETRI_PLACES=211, PETRI_TRANSITIONS=181} [2024-06-03 19:18:52,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-03 19:18:52,174 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 181 transitions, 1789 flow [2024-06-03 19:18:52,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:52,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:52,175 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 19:18:52,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 19:18:52,175 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 19:18:52,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:52,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1511128281, now seen corresponding path program 2 times [2024-06-03 19:18:52,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:52,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772216043] [2024-06-03 19:18:52,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:52,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:53,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:53,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772216043] [2024-06-03 19:18:53,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772216043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:53,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:53,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:18:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909891935] [2024-06-03 19:18:53,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:53,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:18:53,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:53,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:18:53,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:18:53,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:53,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 181 transitions, 1789 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:53,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:53,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:53,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:53,909 INFO L124 PetriNetUnfolderBase]: 380/740 cut-off events. [2024-06-03 19:18:53,909 INFO L125 PetriNetUnfolderBase]: For 27920/27920 co-relation queries the response was YES. [2024-06-03 19:18:53,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4444 conditions, 740 events. 380/740 cut-off events. For 27920/27920 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3924 event pairs, 78 based on Foata normal form. 1/741 useless extension candidates. Maximal degree in co-relation 4346. Up to 651 conditions per place. [2024-06-03 19:18:53,914 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 165 selfloop transitions, 26 changer transitions 0/194 dead transitions. [2024-06-03 19:18:53,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 194 transitions, 2203 flow [2024-06-03 19:18:53,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:18:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:18:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 19:18:53,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-03 19:18:53,915 INFO L175 Difference]: Start difference. First operand has 211 places, 181 transitions, 1789 flow. Second operand 11 states and 131 transitions. [2024-06-03 19:18:53,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 194 transitions, 2203 flow [2024-06-03 19:18:53,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 194 transitions, 2117 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-03 19:18:53,984 INFO L231 Difference]: Finished difference. Result has 213 places, 181 transitions, 1760 flow [2024-06-03 19:18:53,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1760, PETRI_PLACES=213, PETRI_TRANSITIONS=181} [2024-06-03 19:18:53,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-03 19:18:53,985 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 181 transitions, 1760 flow [2024-06-03 19:18:53,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:53,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:53,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:18:53,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 19:18:53,985 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 19:18:53,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash -360479763, now seen corresponding path program 11 times [2024-06-03 19:18:53,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:53,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793058126] [2024-06-03 19:18:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:53,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:54,793 INFO 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 19:18:54,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:54,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793058126] [2024-06-03 19:18:54,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793058126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:54,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:54,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:54,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878608474] [2024-06-03 19:18:54,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:54,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:54,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:54,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:54,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:54,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:54,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 181 transitions, 1760 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:54,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:54,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:54,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:55,177 INFO L124 PetriNetUnfolderBase]: 384/748 cut-off events. [2024-06-03 19:18:55,178 INFO L125 PetriNetUnfolderBase]: For 30513/30513 co-relation queries the response was YES. [2024-06-03 19:18:55,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 748 events. 384/748 cut-off events. For 30513/30513 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3975 event pairs, 63 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 4395. Up to 619 conditions per place. [2024-06-03 19:18:55,183 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 164 selfloop transitions, 29 changer transitions 0/196 dead transitions. [2024-06-03 19:18:55,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 196 transitions, 2212 flow [2024-06-03 19:18:55,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:55,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:55,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 19:18:55,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-03 19:18:55,184 INFO L175 Difference]: Start difference. First operand has 213 places, 181 transitions, 1760 flow. Second operand 9 states and 110 transitions. [2024-06-03 19:18:55,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 196 transitions, 2212 flow [2024-06-03 19:18:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 196 transitions, 2137 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 19:18:55,254 INFO L231 Difference]: Finished difference. Result has 212 places, 182 transitions, 1785 flow [2024-06-03 19:18:55,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1785, PETRI_PLACES=212, PETRI_TRANSITIONS=182} [2024-06-03 19:18:55,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-03 19:18:55,254 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 182 transitions, 1785 flow [2024-06-03 19:18:55,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:55,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:55,255 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 19:18:55,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 19:18:55,255 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 19:18:55,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:55,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1133253409, now seen corresponding path program 12 times [2024-06-03 19:18:55,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:55,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793687493] [2024-06-03 19:18:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:55,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:56,313 INFO 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 19:18:56,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:56,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793687493] [2024-06-03 19:18:56,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793687493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:56,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:56,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:56,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491467120] [2024-06-03 19:18:56,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:56,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:56,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:56,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:56,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:56,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:56,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 182 transitions, 1785 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:56,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:56,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:56,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:56,704 INFO L124 PetriNetUnfolderBase]: 388/756 cut-off events. [2024-06-03 19:18:56,705 INFO L125 PetriNetUnfolderBase]: For 32074/32074 co-relation queries the response was YES. [2024-06-03 19:18:56,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 756 events. 388/756 cut-off events. For 32074/32074 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4032 event pairs, 71 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 4514. Up to 642 conditions per place. [2024-06-03 19:18:56,711 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 161 selfloop transitions, 32 changer transitions 0/196 dead transitions. [2024-06-03 19:18:56,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 196 transitions, 2237 flow [2024-06-03 19:18:56,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-03 19:18:56,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-03 19:18:56,719 INFO L175 Difference]: Start difference. First operand has 212 places, 182 transitions, 1785 flow. Second operand 9 states and 110 transitions. [2024-06-03 19:18:56,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 196 transitions, 2237 flow [2024-06-03 19:18:56,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 196 transitions, 2147 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:56,808 INFO L231 Difference]: Finished difference. Result has 214 places, 183 transitions, 1803 flow [2024-06-03 19:18:56,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1803, PETRI_PLACES=214, PETRI_TRANSITIONS=183} [2024-06-03 19:18:56,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-03 19:18:56,809 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 183 transitions, 1803 flow [2024-06-03 19:18:56,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:56,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:56,810 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 19:18:56,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 19:18:56,810 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 19:18:56,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:56,810 INFO L85 PathProgramCache]: Analyzing trace with hash -362353713, now seen corresponding path program 13 times [2024-06-03 19:18:56,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:56,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731309458] [2024-06-03 19:18:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:56,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:57,706 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 19:18:57,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:57,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731309458] [2024-06-03 19:18:57,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731309458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:57,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:57,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:57,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792375154] [2024-06-03 19:18:57,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:57,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:57,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:57,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 183 transitions, 1803 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:57,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:57,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:57,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:58,077 INFO L124 PetriNetUnfolderBase]: 392/764 cut-off events. [2024-06-03 19:18:58,077 INFO L125 PetriNetUnfolderBase]: For 30924/30924 co-relation queries the response was YES. [2024-06-03 19:18:58,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4632 conditions, 764 events. 392/764 cut-off events. For 30924/30924 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4078 event pairs, 37 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 4531. Up to 577 conditions per place. [2024-06-03 19:18:58,083 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 167 selfloop transitions, 29 changer transitions 0/199 dead transitions. [2024-06-03 19:18:58,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 199 transitions, 2263 flow [2024-06-03 19:18:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 19:18:58,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-03 19:18:58,086 INFO L175 Difference]: Start difference. First operand has 214 places, 183 transitions, 1803 flow. Second operand 9 states and 109 transitions. [2024-06-03 19:18:58,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 199 transitions, 2263 flow [2024-06-03 19:18:58,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 199 transitions, 2169 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:58,157 INFO L231 Difference]: Finished difference. Result has 216 places, 184 transitions, 1811 flow [2024-06-03 19:18:58,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1811, PETRI_PLACES=216, PETRI_TRANSITIONS=184} [2024-06-03 19:18:58,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-03 19:18:58,159 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 184 transitions, 1811 flow [2024-06-03 19:18:58,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:58,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:58,159 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 19:18:58,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 19:18:58,160 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 19:18:58,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1552904877, now seen corresponding path program 14 times [2024-06-03 19:18:58,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:58,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473257909] [2024-06-03 19:18:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:58,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:18:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:18:59,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:18:59,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473257909] [2024-06-03 19:18:59,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473257909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:18:59,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:18:59,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:18:59,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345281300] [2024-06-03 19:18:59,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:18:59,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:18:59,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:18:59,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:18:59,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:18:59,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:18:59,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 184 transitions, 1811 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:59,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:18:59,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:18:59,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:18:59,473 INFO L124 PetriNetUnfolderBase]: 396/772 cut-off events. [2024-06-03 19:18:59,473 INFO L125 PetriNetUnfolderBase]: For 29690/29690 co-relation queries the response was YES. [2024-06-03 19:18:59,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 772 events. 396/772 cut-off events. For 29690/29690 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4145 event pairs, 82 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 4558. Up to 680 conditions per place. [2024-06-03 19:18:59,479 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 171 selfloop transitions, 23 changer transitions 0/197 dead transitions. [2024-06-03 19:18:59,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 197 transitions, 2265 flow [2024-06-03 19:18:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:18:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:18:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:18:59,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-03 19:18:59,481 INFO L175 Difference]: Start difference. First operand has 216 places, 184 transitions, 1811 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:18:59,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 197 transitions, 2265 flow [2024-06-03 19:18:59,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 197 transitions, 2177 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 19:18:59,557 INFO L231 Difference]: Finished difference. Result has 219 places, 186 transitions, 1824 flow [2024-06-03 19:18:59,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=219, PETRI_TRANSITIONS=186} [2024-06-03 19:18:59,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-03 19:18:59,558 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 186 transitions, 1824 flow [2024-06-03 19:18:59,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:18:59,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:18:59,558 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 19:18:59,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 19:18:59,559 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 19:18:59,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:18:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1552757007, now seen corresponding path program 15 times [2024-06-03 19:18:59,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:18:59,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120932553] [2024-06-03 19:18:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:18:59,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:18:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:00,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:00,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:00,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120932553] [2024-06-03 19:19:00,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120932553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:00,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:00,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:00,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923077679] [2024-06-03 19:19:00,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:00,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:00,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:00,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:00,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:00,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:00,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 186 transitions, 1824 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:00,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:00,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:00,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:00,940 INFO L124 PetriNetUnfolderBase]: 400/780 cut-off events. [2024-06-03 19:19:00,940 INFO L125 PetriNetUnfolderBase]: For 27525/27525 co-relation queries the response was YES. [2024-06-03 19:19:00,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 780 events. 400/780 cut-off events. For 27525/27525 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4196 event pairs, 78 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 4521. Up to 678 conditions per place. [2024-06-03 19:19:00,947 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 174 selfloop transitions, 22 changer transitions 0/199 dead transitions. [2024-06-03 19:19:00,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 199 transitions, 2270 flow [2024-06-03 19:19:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:19:00,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-03 19:19:00,948 INFO L175 Difference]: Start difference. First operand has 219 places, 186 transitions, 1824 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:19:00,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 199 transitions, 2270 flow [2024-06-03 19:19:01,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 199 transitions, 2207 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-03 19:19:01,024 INFO L231 Difference]: Finished difference. Result has 222 places, 187 transitions, 1839 flow [2024-06-03 19:19:01,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1839, PETRI_PLACES=222, PETRI_TRANSITIONS=187} [2024-06-03 19:19:01,025 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-03 19:19:01,025 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 187 transitions, 1839 flow [2024-06-03 19:19:01,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:01,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:01,025 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 19:19:01,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 19:19:01,026 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 19:19:01,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:01,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1558267257, now seen corresponding path program 16 times [2024-06-03 19:19:01,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:01,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381221219] [2024-06-03 19:19:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:02,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:02,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381221219] [2024-06-03 19:19:02,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381221219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:02,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:02,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:02,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176988715] [2024-06-03 19:19:02,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:02,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:02,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:02,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:02,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:02,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:02,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 187 transitions, 1839 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:02,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:02,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:02,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:02,467 INFO L124 PetriNetUnfolderBase]: 404/788 cut-off events. [2024-06-03 19:19:02,467 INFO L125 PetriNetUnfolderBase]: For 27600/27600 co-relation queries the response was YES. [2024-06-03 19:19:02,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4664 conditions, 788 events. 404/788 cut-off events. For 27600/27600 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4259 event pairs, 82 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 4559. Up to 684 conditions per place. [2024-06-03 19:19:02,473 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 167 selfloop transitions, 29 changer transitions 0/199 dead transitions. [2024-06-03 19:19:02,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 199 transitions, 2283 flow [2024-06-03 19:19:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 19:19:02,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-03 19:19:02,474 INFO L175 Difference]: Start difference. First operand has 222 places, 187 transitions, 1839 flow. Second operand 9 states and 109 transitions. [2024-06-03 19:19:02,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 199 transitions, 2283 flow [2024-06-03 19:19:02,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 199 transitions, 2217 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 19:19:02,549 INFO L231 Difference]: Finished difference. Result has 224 places, 188 transitions, 1865 flow [2024-06-03 19:19:02,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1865, PETRI_PLACES=224, PETRI_TRANSITIONS=188} [2024-06-03 19:19:02,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-03 19:19:02,549 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 188 transitions, 1865 flow [2024-06-03 19:19:02,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:02,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:02,550 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 19:19:02,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 19:19:02,550 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 19:19:02,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2021115441, now seen corresponding path program 3 times [2024-06-03 19:19:02,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:02,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176562095] [2024-06-03 19:19:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:02,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:03,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:03,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176562095] [2024-06-03 19:19:03,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176562095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:03,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:03,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:03,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917177241] [2024-06-03 19:19:03,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:03,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:03,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:03,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:03,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:03,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:03,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 188 transitions, 1865 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:03,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:03,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:03,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:04,132 INFO L124 PetriNetUnfolderBase]: 407/795 cut-off events. [2024-06-03 19:19:04,132 INFO L125 PetriNetUnfolderBase]: For 26488/26488 co-relation queries the response was YES. [2024-06-03 19:19:04,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 795 events. 407/795 cut-off events. For 26488/26488 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4310 event pairs, 72 based on Foata normal form. 1/796 useless extension candidates. Maximal degree in co-relation 4601. Up to 679 conditions per place. [2024-06-03 19:19:04,138 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 40 changer transitions 0/203 dead transitions. [2024-06-03 19:19:04,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 203 transitions, 2349 flow [2024-06-03 19:19:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:19:04,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:19:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:19:04,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:19:04,139 INFO L175 Difference]: Start difference. First operand has 224 places, 188 transitions, 1865 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:19:04,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 203 transitions, 2349 flow [2024-06-03 19:19:04,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 203 transitions, 2271 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 19:19:04,215 INFO L231 Difference]: Finished difference. Result has 227 places, 190 transitions, 1933 flow [2024-06-03 19:19:04,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1933, PETRI_PLACES=227, PETRI_TRANSITIONS=190} [2024-06-03 19:19:04,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-03 19:19:04,216 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 190 transitions, 1933 flow [2024-06-03 19:19:04,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:04,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:04,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:19:04,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 19:19:04,217 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 19:19:04,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1558273209, now seen corresponding path program 4 times [2024-06-03 19:19:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:04,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495617983] [2024-06-03 19:19:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:05,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:05,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495617983] [2024-06-03 19:19:05,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495617983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:05,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:05,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:05,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693888905] [2024-06-03 19:19:05,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:05,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:05,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:05,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:05,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:05,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 190 transitions, 1933 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:05,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:05,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:05,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:05,866 INFO L124 PetriNetUnfolderBase]: 410/800 cut-off events. [2024-06-03 19:19:05,866 INFO L125 PetriNetUnfolderBase]: For 26430/26430 co-relation queries the response was YES. [2024-06-03 19:19:05,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 800 events. 410/800 cut-off events. For 26430/26430 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4333 event pairs, 82 based on Foata normal form. 1/801 useless extension candidates. Maximal degree in co-relation 4668. Up to 657 conditions per place. [2024-06-03 19:19:05,873 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 152 selfloop transitions, 48 changer transitions 0/203 dead transitions. [2024-06-03 19:19:05,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 203 transitions, 2511 flow [2024-06-03 19:19:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 19:19:05,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-03 19:19:05,874 INFO L175 Difference]: Start difference. First operand has 227 places, 190 transitions, 1933 flow. Second operand 9 states and 115 transitions. [2024-06-03 19:19:05,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 203 transitions, 2511 flow [2024-06-03 19:19:05,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 203 transitions, 2395 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-03 19:19:05,956 INFO L231 Difference]: Finished difference. Result has 228 places, 192 transitions, 1973 flow [2024-06-03 19:19:05,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1973, PETRI_PLACES=228, PETRI_TRANSITIONS=192} [2024-06-03 19:19:05,956 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-03 19:19:05,957 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 192 transitions, 1973 flow [2024-06-03 19:19:05,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:05,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:05,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:19:05,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 19:19:05,957 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 19:19:05,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:05,958 INFO L85 PathProgramCache]: Analyzing trace with hash -989003248, now seen corresponding path program 2 times [2024-06-03 19:19:05,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:05,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089320505] [2024-06-03 19:19:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:06,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089320505] [2024-06-03 19:19:06,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089320505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:06,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:06,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:06,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741812253] [2024-06-03 19:19:06,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:06,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:06,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:06,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:06,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:06,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:06,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 192 transitions, 1973 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:06,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:06,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:06,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:07,263 INFO L124 PetriNetUnfolderBase]: 430/844 cut-off events. [2024-06-03 19:19:07,264 INFO L125 PetriNetUnfolderBase]: For 41892/41892 co-relation queries the response was YES. [2024-06-03 19:19:07,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5034 conditions, 844 events. 430/844 cut-off events. For 41892/41892 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4640 event pairs, 86 based on Foata normal form. 12/856 useless extension candidates. Maximal degree in co-relation 4926. Up to 684 conditions per place. [2024-06-03 19:19:07,270 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 168 selfloop transitions, 30 changer transitions 7/208 dead transitions. [2024-06-03 19:19:07,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 208 transitions, 2501 flow [2024-06-03 19:19:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-03 19:19:07,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-03 19:19:07,271 INFO L175 Difference]: Start difference. First operand has 228 places, 192 transitions, 1973 flow. Second operand 9 states and 115 transitions. [2024-06-03 19:19:07,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 208 transitions, 2501 flow [2024-06-03 19:19:07,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 208 transitions, 2390 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-03 19:19:07,359 INFO L231 Difference]: Finished difference. Result has 230 places, 190 transitions, 1915 flow [2024-06-03 19:19:07,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1915, PETRI_PLACES=230, PETRI_TRANSITIONS=190} [2024-06-03 19:19:07,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-03 19:19:07,360 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 190 transitions, 1915 flow [2024-06-03 19:19:07,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:07,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:07,361 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 19:19:07,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 19:19:07,361 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 19:19:07,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:07,361 INFO L85 PathProgramCache]: Analyzing trace with hash -989010967, now seen corresponding path program 5 times [2024-06-03 19:19:07,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:07,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791723906] [2024-06-03 19:19:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:07,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:08,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:08,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791723906] [2024-06-03 19:19:08,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791723906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:08,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:08,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:08,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4789790] [2024-06-03 19:19:08,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:08,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:08,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:08,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:08,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 190 transitions, 1915 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:08,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:08,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:08,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:09,321 INFO L124 PetriNetUnfolderBase]: 404/793 cut-off events. [2024-06-03 19:19:09,321 INFO L125 PetriNetUnfolderBase]: For 25714/25714 co-relation queries the response was YES. [2024-06-03 19:19:09,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4625 conditions, 793 events. 404/793 cut-off events. For 25714/25714 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4328 event pairs, 82 based on Foata normal form. 1/794 useless extension candidates. Maximal degree in co-relation 4517. Up to 675 conditions per place. [2024-06-03 19:19:09,327 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 40 changer transitions 0/201 dead transitions. [2024-06-03 19:19:09,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 201 transitions, 2337 flow [2024-06-03 19:19:09,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:19:09,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:19:09,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:19:09,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:19:09,329 INFO L175 Difference]: Start difference. First operand has 230 places, 190 transitions, 1915 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:19:09,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 201 transitions, 2337 flow [2024-06-03 19:19:09,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 201 transitions, 2231 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-03 19:19:09,410 INFO L231 Difference]: Finished difference. Result has 233 places, 190 transitions, 1897 flow [2024-06-03 19:19:09,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1897, PETRI_PLACES=233, PETRI_TRANSITIONS=190} [2024-06-03 19:19:09,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-03 19:19:09,410 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 190 transitions, 1897 flow [2024-06-03 19:19:09,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:09,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:09,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:19:09,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 19:19:09,411 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 19:19:09,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:09,411 INFO L85 PathProgramCache]: Analyzing trace with hash 191055161, now seen corresponding path program 17 times [2024-06-03 19:19:09,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:09,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633508905] [2024-06-03 19:19:09,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:09,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:10,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633508905] [2024-06-03 19:19:10,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633508905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:10,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:10,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:10,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021497594] [2024-06-03 19:19:10,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:10,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:10,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:10,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:10,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:10,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:10,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 190 transitions, 1897 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:10,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:10,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:10,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:10,860 INFO L124 PetriNetUnfolderBase]: 408/801 cut-off events. [2024-06-03 19:19:10,860 INFO L125 PetriNetUnfolderBase]: For 26973/26973 co-relation queries the response was YES. [2024-06-03 19:19:10,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4648 conditions, 801 events. 408/801 cut-off events. For 26973/26973 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4375 event pairs, 85 based on Foata normal form. 2/803 useless extension candidates. Maximal degree in co-relation 4539. Up to 674 conditions per place. [2024-06-03 19:19:10,866 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 160 selfloop transitions, 37 changer transitions 0/200 dead transitions. [2024-06-03 19:19:10,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 200 transitions, 2335 flow [2024-06-03 19:19:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 19:19:10,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-03 19:19:10,867 INFO L175 Difference]: Start difference. First operand has 233 places, 190 transitions, 1897 flow. Second operand 9 states and 109 transitions. [2024-06-03 19:19:10,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 200 transitions, 2335 flow [2024-06-03 19:19:10,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 200 transitions, 2206 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:19:10,944 INFO L231 Difference]: Finished difference. Result has 231 places, 191 transitions, 1872 flow [2024-06-03 19:19:10,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1872, PETRI_PLACES=231, PETRI_TRANSITIONS=191} [2024-06-03 19:19:10,944 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-03 19:19:10,944 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 191 transitions, 1872 flow [2024-06-03 19:19:10,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:10,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:10,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:19:10,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 19:19:10,945 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 19:19:10,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:10,945 INFO L85 PathProgramCache]: Analyzing trace with hash 107628093, now seen corresponding path program 18 times [2024-06-03 19:19:10,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:10,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573298886] [2024-06-03 19:19:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:10,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:11,956 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 19:19:11,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:11,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573298886] [2024-06-03 19:19:11,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573298886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:11,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:11,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:11,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031191903] [2024-06-03 19:19:11,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:11,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:11,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:12,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:12,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 191 transitions, 1872 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:12,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:12,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:12,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:12,258 INFO L124 PetriNetUnfolderBase]: 412/807 cut-off events. [2024-06-03 19:19:12,258 INFO L125 PetriNetUnfolderBase]: For 27078/27078 co-relation queries the response was YES. [2024-06-03 19:19:12,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 807 events. 412/807 cut-off events. For 27078/27078 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4404 event pairs, 87 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 4578. Up to 715 conditions per place. [2024-06-03 19:19:12,264 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 176 selfloop transitions, 23 changer transitions 0/202 dead transitions. [2024-06-03 19:19:12,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 202 transitions, 2326 flow [2024-06-03 19:19:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:19:12,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-03 19:19:12,265 INFO L175 Difference]: Start difference. First operand has 231 places, 191 transitions, 1872 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:19:12,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 202 transitions, 2326 flow [2024-06-03 19:19:12,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 202 transitions, 2230 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 19:19:12,338 INFO L231 Difference]: Finished difference. Result has 234 places, 193 transitions, 1869 flow [2024-06-03 19:19:12,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1869, PETRI_PLACES=234, PETRI_TRANSITIONS=193} [2024-06-03 19:19:12,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-03 19:19:12,339 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 193 transitions, 1869 flow [2024-06-03 19:19:12,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:12,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:12,339 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 19:19:12,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 19:19:12,339 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 19:19:12,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:12,340 INFO L85 PathProgramCache]: Analyzing trace with hash 107480223, now seen corresponding path program 19 times [2024-06-03 19:19:12,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:12,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396550787] [2024-06-03 19:19:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:12,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:13,319 INFO 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 19:19:13,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:13,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396550787] [2024-06-03 19:19:13,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396550787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:13,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:13,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:13,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96653887] [2024-06-03 19:19:13,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:13,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:13,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:13,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:13,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 193 transitions, 1869 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:13,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:13,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:13,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:13,695 INFO L124 PetriNetUnfolderBase]: 416/817 cut-off events. [2024-06-03 19:19:13,695 INFO L125 PetriNetUnfolderBase]: For 28140/28140 co-relation queries the response was YES. [2024-06-03 19:19:13,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4719 conditions, 817 events. 416/817 cut-off events. For 28140/28140 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4495 event pairs, 85 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 4608. Up to 718 conditions per place. [2024-06-03 19:19:13,702 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 179 selfloop transitions, 22 changer transitions 0/204 dead transitions. [2024-06-03 19:19:13,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 204 transitions, 2321 flow [2024-06-03 19:19:13,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:13,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-03 19:19:13,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-03 19:19:13,704 INFO L175 Difference]: Start difference. First operand has 234 places, 193 transitions, 1869 flow. Second operand 9 states and 107 transitions. [2024-06-03 19:19:13,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 204 transitions, 2321 flow [2024-06-03 19:19:13,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 204 transitions, 2256 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 19:19:13,790 INFO L231 Difference]: Finished difference. Result has 237 places, 194 transitions, 1882 flow [2024-06-03 19:19:13,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1882, PETRI_PLACES=237, PETRI_TRANSITIONS=194} [2024-06-03 19:19:13,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-03 19:19:13,790 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 194 transitions, 1882 flow [2024-06-03 19:19:13,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:13,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:13,791 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 19:19:13,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 19:19:13,791 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 19:19:13,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:13,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1716054103, now seen corresponding path program 20 times [2024-06-03 19:19:13,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:13,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782055194] [2024-06-03 19:19:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:13,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:14,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:14,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782055194] [2024-06-03 19:19:14,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782055194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:14,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:14,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304918291] [2024-06-03 19:19:14,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:14,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:14,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:14,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:14,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:14,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:14,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 194 transitions, 1882 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:14,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:14,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:14,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:15,206 INFO L124 PetriNetUnfolderBase]: 413/812 cut-off events. [2024-06-03 19:19:15,207 INFO L125 PetriNetUnfolderBase]: For 25990/25990 co-relation queries the response was YES. [2024-06-03 19:19:15,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4556 conditions, 812 events. 413/812 cut-off events. For 25990/25990 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4479 event pairs, 86 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 4444. Up to 712 conditions per place. [2024-06-03 19:19:15,213 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 174 selfloop transitions, 26 changer transitions 0/203 dead transitions. [2024-06-03 19:19:15,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 203 transitions, 2302 flow [2024-06-03 19:19:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 19:19:15,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-03 19:19:15,214 INFO L175 Difference]: Start difference. First operand has 237 places, 194 transitions, 1882 flow. Second operand 9 states and 109 transitions. [2024-06-03 19:19:15,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 203 transitions, 2302 flow [2024-06-03 19:19:15,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 203 transitions, 2234 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 19:19:15,299 INFO L231 Difference]: Finished difference. Result has 239 places, 194 transitions, 1870 flow [2024-06-03 19:19:15,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1870, PETRI_PLACES=239, PETRI_TRANSITIONS=194} [2024-06-03 19:19:15,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-03 19:19:15,300 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 194 transitions, 1870 flow [2024-06-03 19:19:15,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:15,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:15,300 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 19:19:15,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 19:19:15,300 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 19:19:15,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:15,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2035359457, now seen corresponding path program 6 times [2024-06-03 19:19:15,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:15,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592280742] [2024-06-03 19:19:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:15,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:16,750 INFO 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 19:19:16,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:16,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592280742] [2024-06-03 19:19:16,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592280742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:16,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:16,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:16,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918545512] [2024-06-03 19:19:16,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:16,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:16,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:16,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:16,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:16,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:16,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 194 transitions, 1870 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:16,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:16,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:16,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:17,229 INFO L124 PetriNetUnfolderBase]: 416/817 cut-off events. [2024-06-03 19:19:17,230 INFO L125 PetriNetUnfolderBase]: For 25270/25270 co-relation queries the response was YES. [2024-06-03 19:19:17,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4583 conditions, 817 events. 416/817 cut-off events. For 25270/25270 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4504 event pairs, 86 based on Foata normal form. 1/818 useless extension candidates. Maximal degree in co-relation 4470. Up to 708 conditions per place. [2024-06-03 19:19:17,236 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 33 changer transitions 0/205 dead transitions. [2024-06-03 19:19:17,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 205 transitions, 2338 flow [2024-06-03 19:19:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:19:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:19:17,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:19:17,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:19:17,238 INFO L175 Difference]: Start difference. First operand has 239 places, 194 transitions, 1870 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:19:17,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 205 transitions, 2338 flow [2024-06-03 19:19:17,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 205 transitions, 2207 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:19:17,332 INFO L231 Difference]: Finished difference. Result has 241 places, 196 transitions, 1858 flow [2024-06-03 19:19:17,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=241, PETRI_TRANSITIONS=196} [2024-06-03 19:19:17,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-03 19:19:17,333 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 196 transitions, 1858 flow [2024-06-03 19:19:17,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:17,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:17,334 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 19:19:17,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 19:19:17,334 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 19:19:17,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2035351738, now seen corresponding path program 3 times [2024-06-03 19:19:17,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:17,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150062608] [2024-06-03 19:19:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:18,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:18,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150062608] [2024-06-03 19:19:18,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150062608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:18,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:18,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:18,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042783441] [2024-06-03 19:19:18,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:18,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:18,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:18,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:18,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:18,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:18,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 196 transitions, 1858 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:18,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:18,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:18,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:19,120 INFO L124 PetriNetUnfolderBase]: 432/851 cut-off events. [2024-06-03 19:19:19,120 INFO L125 PetriNetUnfolderBase]: For 39468/39468 co-relation queries the response was YES. [2024-06-03 19:19:19,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4714 conditions, 851 events. 432/851 cut-off events. For 39468/39468 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4700 event pairs, 90 based on Foata normal form. 10/861 useless extension candidates. Maximal degree in co-relation 4600. Up to 712 conditions per place. [2024-06-03 19:19:19,127 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 29 changer transitions 4/210 dead transitions. [2024-06-03 19:19:19,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 210 transitions, 2370 flow [2024-06-03 19:19:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:19:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:19:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:19:19,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:19:19,128 INFO L175 Difference]: Start difference. First operand has 241 places, 196 transitions, 1858 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:19:19,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 210 transitions, 2370 flow [2024-06-03 19:19:19,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 210 transitions, 2248 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-03 19:19:19,223 INFO L231 Difference]: Finished difference. Result has 243 places, 196 transitions, 1810 flow [2024-06-03 19:19:19,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1810, PETRI_PLACES=243, PETRI_TRANSITIONS=196} [2024-06-03 19:19:19,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-03 19:19:19,224 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 196 transitions, 1810 flow [2024-06-03 19:19:19,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:19,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:19,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:19:19,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 19:19:19,225 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 19:19:19,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1841621857, now seen corresponding path program 7 times [2024-06-03 19:19:19,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:19,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950380649] [2024-06-03 19:19:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:21,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:21,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950380649] [2024-06-03 19:19:21,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950380649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:21,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:21,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734442650] [2024-06-03 19:19:21,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:21,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:21,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:21,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:21,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:21,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 196 transitions, 1810 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:21,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:21,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:21,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:21,971 INFO L124 PetriNetUnfolderBase]: 429/846 cut-off events. [2024-06-03 19:19:21,971 INFO L125 PetriNetUnfolderBase]: For 27219/27219 co-relation queries the response was YES. [2024-06-03 19:19:21,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 846 events. 429/846 cut-off events. For 27219/27219 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4678 event pairs, 90 based on Foata normal form. 1/847 useless extension candidates. Maximal degree in co-relation 4531. Up to 676 conditions per place. [2024-06-03 19:19:21,977 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 58 changer transitions 0/207 dead transitions. [2024-06-03 19:19:21,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 207 transitions, 2292 flow [2024-06-03 19:19:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:19:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:19:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 19:19:21,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-03 19:19:21,979 INFO L175 Difference]: Start difference. First operand has 243 places, 196 transitions, 1810 flow. Second operand 10 states and 122 transitions. [2024-06-03 19:19:21,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 207 transitions, 2292 flow [2024-06-03 19:19:22,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 207 transitions, 2204 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 19:19:22,075 INFO L231 Difference]: Finished difference. Result has 243 places, 198 transitions, 1901 flow [2024-06-03 19:19:22,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1901, PETRI_PLACES=243, PETRI_TRANSITIONS=198} [2024-06-03 19:19:22,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-03 19:19:22,075 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 198 transitions, 1901 flow [2024-06-03 19:19:22,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:22,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:22,076 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 19:19:22,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 19:19:22,076 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 19:19:22,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1841420047, now seen corresponding path program 8 times [2024-06-03 19:19:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:22,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848470481] [2024-06-03 19:19:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:22,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:23,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848470481] [2024-06-03 19:19:23,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848470481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:23,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:23,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:23,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425808645] [2024-06-03 19:19:23,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:23,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:23,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:23,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:23,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 198 transitions, 1901 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:23,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:23,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:23,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:24,054 INFO L124 PetriNetUnfolderBase]: 432/853 cut-off events. [2024-06-03 19:19:24,054 INFO L125 PetriNetUnfolderBase]: For 28583/28583 co-relation queries the response was YES. [2024-06-03 19:19:24,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 853 events. 432/853 cut-off events. For 28583/28583 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4740 event pairs, 90 based on Foata normal form. 1/854 useless extension candidates. Maximal degree in co-relation 4655. Up to 681 conditions per place. [2024-06-03 19:19:24,060 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 149 selfloop transitions, 57 changer transitions 0/209 dead transitions. [2024-06-03 19:19:24,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 209 transitions, 2391 flow [2024-06-03 19:19:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:19:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:19:24,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 19:19:24,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-03 19:19:24,062 INFO L175 Difference]: Start difference. First operand has 243 places, 198 transitions, 1901 flow. Second operand 10 states and 123 transitions. [2024-06-03 19:19:24,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 209 transitions, 2391 flow [2024-06-03 19:19:24,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 209 transitions, 2228 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-03 19:19:24,159 INFO L231 Difference]: Finished difference. Result has 245 places, 200 transitions, 1919 flow [2024-06-03 19:19:24,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1919, PETRI_PLACES=245, PETRI_TRANSITIONS=200} [2024-06-03 19:19:24,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-03 19:19:24,159 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 200 transitions, 1919 flow [2024-06-03 19:19:24,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:24,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:24,160 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 19:19:24,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 19:19:24,160 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 19:19:24,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2035561267, now seen corresponding path program 9 times [2024-06-03 19:19:24,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:24,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145287793] [2024-06-03 19:19:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:24,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:25,473 INFO 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 19:19:25,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:25,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145287793] [2024-06-03 19:19:25,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145287793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:25,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:25,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:25,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526750951] [2024-06-03 19:19:25,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:25,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:25,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:25,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:25,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:25,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:25,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 200 transitions, 1919 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:25,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:25,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:25,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:25,980 INFO L124 PetriNetUnfolderBase]: 430/850 cut-off events. [2024-06-03 19:19:25,981 INFO L125 PetriNetUnfolderBase]: For 27505/27505 co-relation queries the response was YES. [2024-06-03 19:19:25,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 850 events. 430/850 cut-off events. For 27505/27505 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4723 event pairs, 90 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 4558. Up to 741 conditions per place. [2024-06-03 19:19:25,988 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 32 changer transitions 0/209 dead transitions. [2024-06-03 19:19:25,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 209 transitions, 2351 flow [2024-06-03 19:19:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:19:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:19:25,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:19:25,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-03 19:19:25,989 INFO L175 Difference]: Start difference. First operand has 245 places, 200 transitions, 1919 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:19:25,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 209 transitions, 2351 flow [2024-06-03 19:19:26,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 209 transitions, 2156 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-03 19:19:26,088 INFO L231 Difference]: Finished difference. Result has 247 places, 200 transitions, 1793 flow [2024-06-03 19:19:26,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1793, PETRI_PLACES=247, PETRI_TRANSITIONS=200} [2024-06-03 19:19:26,088 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-03 19:19:26,088 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 200 transitions, 1793 flow [2024-06-03 19:19:26,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:26,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:26,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:19:26,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 19:19:26,089 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 19:19:26,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1841412328, now seen corresponding path program 4 times [2024-06-03 19:19:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:26,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472316693] [2024-06-03 19:19:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:26,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:26,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472316693] [2024-06-03 19:19:26,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472316693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:26,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:26,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:26,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049892213] [2024-06-03 19:19:26,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:26,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:26,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:26,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:27,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:27,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 200 transitions, 1793 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:27,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:27,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:27,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:27,260 INFO L124 PetriNetUnfolderBase]: 434/858 cut-off events. [2024-06-03 19:19:27,260 INFO L125 PetriNetUnfolderBase]: For 29564/29564 co-relation queries the response was YES. [2024-06-03 19:19:27,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4611 conditions, 858 events. 434/858 cut-off events. For 29564/29564 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4787 event pairs, 90 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 4495. Up to 698 conditions per place. [2024-06-03 19:19:27,268 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 49 changer transitions 0/210 dead transitions. [2024-06-03 19:19:27,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 210 transitions, 2247 flow [2024-06-03 19:19:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-03 19:19:27,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-03 19:19:27,269 INFO L175 Difference]: Start difference. First operand has 247 places, 200 transitions, 1793 flow. Second operand 9 states and 114 transitions. [2024-06-03 19:19:27,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 210 transitions, 2247 flow [2024-06-03 19:19:27,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 210 transitions, 2163 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:19:27,364 INFO L231 Difference]: Finished difference. Result has 247 places, 201 transitions, 1833 flow [2024-06-03 19:19:27,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1833, PETRI_PLACES=247, PETRI_TRANSITIONS=201} [2024-06-03 19:19:27,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-03 19:19:27,365 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 201 transitions, 1833 flow [2024-06-03 19:19:27,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:27,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:27,365 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 19:19:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 19:19:27,366 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 19:19:27,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:27,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1841412607, now seen corresponding path program 10 times [2024-06-03 19:19:27,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:27,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020057691] [2024-06-03 19:19:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:27,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:28,598 INFO 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 19:19:28,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:28,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020057691] [2024-06-03 19:19:28,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020057691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:28,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:28,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:28,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051525582] [2024-06-03 19:19:28,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:28,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:28,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:28,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:28,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:28,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 201 transitions, 1833 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:28,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:28,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:28,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:29,002 INFO L124 PetriNetUnfolderBase]: 437/865 cut-off events. [2024-06-03 19:19:29,002 INFO L125 PetriNetUnfolderBase]: For 29066/29066 co-relation queries the response was YES. [2024-06-03 19:19:29,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4725 conditions, 865 events. 437/865 cut-off events. For 29066/29066 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4850 event pairs, 92 based on Foata normal form. 1/866 useless extension candidates. Maximal degree in co-relation 4608. Up to 626 conditions per place. [2024-06-03 19:19:29,008 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 76 changer transitions 0/214 dead transitions. [2024-06-03 19:19:29,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 214 transitions, 2521 flow [2024-06-03 19:19:29,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:29,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-03 19:19:29,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-03 19:19:29,010 INFO L175 Difference]: Start difference. First operand has 247 places, 201 transitions, 1833 flow. Second operand 9 states and 118 transitions. [2024-06-03 19:19:29,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 214 transitions, 2521 flow [2024-06-03 19:19:29,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 214 transitions, 2407 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 19:19:29,105 INFO L231 Difference]: Finished difference. Result has 249 places, 205 transitions, 2007 flow [2024-06-03 19:19:29,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2007, PETRI_PLACES=249, PETRI_TRANSITIONS=205} [2024-06-03 19:19:29,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-03 19:19:29,106 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 205 transitions, 2007 flow [2024-06-03 19:19:29,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:29,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:29,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:19:29,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 19:19:29,106 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 19:19:29,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1145769278, now seen corresponding path program 5 times [2024-06-03 19:19:29,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:29,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712906518] [2024-06-03 19:19:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:29,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:30,159 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 19:19:30,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712906518] [2024-06-03 19:19:30,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712906518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:30,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:30,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82052360] [2024-06-03 19:19:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:30,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:30,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:30,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:30,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:30,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 205 transitions, 2007 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:30,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:30,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:30,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:30,561 INFO L124 PetriNetUnfolderBase]: 441/872 cut-off events. [2024-06-03 19:19:30,561 INFO L125 PetriNetUnfolderBase]: For 32270/32270 co-relation queries the response was YES. [2024-06-03 19:19:30,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 872 events. 441/872 cut-off events. For 32270/32270 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4889 event pairs, 129 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 4720. Up to 772 conditions per place. [2024-06-03 19:19:30,569 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 195 selfloop transitions, 21 changer transitions 0/219 dead transitions. [2024-06-03 19:19:30,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 219 transitions, 2613 flow [2024-06-03 19:19:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:30,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-03 19:19:30,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-03 19:19:30,570 INFO L175 Difference]: Start difference. First operand has 249 places, 205 transitions, 2007 flow. Second operand 11 states and 126 transitions. [2024-06-03 19:19:30,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 219 transitions, 2613 flow [2024-06-03 19:19:30,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 219 transitions, 2370 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-03 19:19:30,677 INFO L231 Difference]: Finished difference. Result has 251 places, 206 transitions, 1834 flow [2024-06-03 19:19:30,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1834, PETRI_PLACES=251, PETRI_TRANSITIONS=206} [2024-06-03 19:19:30,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-03 19:19:30,677 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 206 transitions, 1834 flow [2024-06-03 19:19:30,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:30,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:30,678 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 19:19:30,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 19:19:30,678 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 19:19:30,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:30,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1404383678, now seen corresponding path program 6 times [2024-06-03 19:19:30,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:30,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040730193] [2024-06-03 19:19:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:30,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:31,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:31,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040730193] [2024-06-03 19:19:31,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040730193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:31,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:31,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:31,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723328440] [2024-06-03 19:19:31,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:31,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:31,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:31,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:31,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:31,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:31,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 206 transitions, 1834 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:31,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:31,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:31,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:32,012 INFO L124 PetriNetUnfolderBase]: 438/867 cut-off events. [2024-06-03 19:19:32,012 INFO L125 PetriNetUnfolderBase]: For 27020/27020 co-relation queries the response was YES. [2024-06-03 19:19:32,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4435 conditions, 867 events. 438/867 cut-off events. For 27020/27020 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4847 event pairs, 130 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 4319. Up to 784 conditions per place. [2024-06-03 19:19:32,018 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 194 selfloop transitions, 18 changer transitions 0/215 dead transitions. [2024-06-03 19:19:32,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 215 transitions, 2278 flow [2024-06-03 19:19:32,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-03 19:19:32,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-03 19:19:32,019 INFO L175 Difference]: Start difference. First operand has 251 places, 206 transitions, 1834 flow. Second operand 9 states and 106 transitions. [2024-06-03 19:19:32,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 215 transitions, 2278 flow [2024-06-03 19:19:32,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 215 transitions, 2188 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-03 19:19:32,107 INFO L231 Difference]: Finished difference. Result has 251 places, 206 transitions, 1785 flow [2024-06-03 19:19:32,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1785, PETRI_PLACES=251, PETRI_TRANSITIONS=206} [2024-06-03 19:19:32,107 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-03 19:19:32,107 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 206 transitions, 1785 flow [2024-06-03 19:19:32,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:32,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:32,107 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 19:19:32,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 19:19:32,108 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 19:19:32,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:32,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1155292757, now seen corresponding path program 11 times [2024-06-03 19:19:32,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:32,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736547959] [2024-06-03 19:19:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:32,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:33,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:33,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736547959] [2024-06-03 19:19:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736547959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:33,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:33,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:19:33,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959347766] [2024-06-03 19:19:33,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:33,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:19:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:33,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:19:33,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:19:33,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:33,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 206 transitions, 1785 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:33,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:33,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:33,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:33,654 INFO L124 PetriNetUnfolderBase]: 441/872 cut-off events. [2024-06-03 19:19:33,654 INFO L125 PetriNetUnfolderBase]: For 25715/25715 co-relation queries the response was YES. [2024-06-03 19:19:33,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4410 conditions, 872 events. 441/872 cut-off events. For 25715/25715 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4891 event pairs, 130 based on Foata normal form. 1/873 useless extension candidates. Maximal degree in co-relation 4294. Up to 785 conditions per place. [2024-06-03 19:19:33,661 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 23 changer transitions 0/217 dead transitions. [2024-06-03 19:19:33,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 217 transitions, 2413 flow [2024-06-03 19:19:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:19:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:19:33,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-03 19:19:33,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-03 19:19:33,663 INFO L175 Difference]: Start difference. First operand has 251 places, 206 transitions, 1785 flow. Second operand 9 states and 109 transitions. [2024-06-03 19:19:33,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 217 transitions, 2413 flow [2024-06-03 19:19:33,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 217 transitions, 2373 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 19:19:33,754 INFO L231 Difference]: Finished difference. Result has 252 places, 208 transitions, 1854 flow [2024-06-03 19:19:33,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1854, PETRI_PLACES=252, PETRI_TRANSITIONS=208} [2024-06-03 19:19:33,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-03 19:19:33,754 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 208 transitions, 1854 flow [2024-06-03 19:19:33,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:33,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:33,755 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 19:19:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 19:19:33,755 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 19:19:33,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1155300197, now seen corresponding path program 12 times [2024-06-03 19:19:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:33,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423960093] [2024-06-03 19:19:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:33,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:35,118 INFO 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 19:19:35,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:35,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423960093] [2024-06-03 19:19:35,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423960093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:35,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:35,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:35,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447260305] [2024-06-03 19:19:35,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:35,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:35,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:35,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:35,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 208 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:35,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:35,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:35,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:35,580 INFO L124 PetriNetUnfolderBase]: 439/869 cut-off events. [2024-06-03 19:19:35,581 INFO L125 PetriNetUnfolderBase]: For 24376/24376 co-relation queries the response was YES. [2024-06-03 19:19:35,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4335 conditions, 869 events. 439/869 cut-off events. For 24376/24376 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4884 event pairs, 130 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 4218. Up to 797 conditions per place. [2024-06-03 19:19:35,587 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 17 changer transitions 0/217 dead transitions. [2024-06-03 19:19:35,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 217 transitions, 2302 flow [2024-06-03 19:19:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:19:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:19:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 19:19:35,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-03 19:19:35,588 INFO L175 Difference]: Start difference. First operand has 252 places, 208 transitions, 1854 flow. Second operand 10 states and 114 transitions. [2024-06-03 19:19:35,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 217 transitions, 2302 flow [2024-06-03 19:19:35,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 217 transitions, 2169 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-03 19:19:35,668 INFO L231 Difference]: Finished difference. Result has 254 places, 208 transitions, 1760 flow [2024-06-03 19:19:35,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1760, PETRI_PLACES=254, PETRI_TRANSITIONS=208} [2024-06-03 19:19:35,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-03 19:19:35,669 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 208 transitions, 1760 flow [2024-06-03 19:19:35,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:35,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:35,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:19:35,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 19:19:35,669 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 19:19:35,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash -870504120, now seen corresponding path program 1 times [2024-06-03 19:19:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:35,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603236743] [2024-06-03 19:19:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:36,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603236743] [2024-06-03 19:19:36,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603236743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:36,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:36,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:36,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072753926] [2024-06-03 19:19:36,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:36,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:36,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:36,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:36,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:36,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:36,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 208 transitions, 1760 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:36,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:36,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:36,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:36,974 INFO L124 PetriNetUnfolderBase]: 451/898 cut-off events. [2024-06-03 19:19:36,975 INFO L125 PetriNetUnfolderBase]: For 36979/36979 co-relation queries the response was YES. [2024-06-03 19:19:36,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4356 conditions, 898 events. 451/898 cut-off events. For 36979/36979 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5079 event pairs, 75 based on Foata normal form. 8/906 useless extension candidates. Maximal degree in co-relation 4239. Up to 758 conditions per place. [2024-06-03 19:19:36,982 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 195 selfloop transitions, 17 changer transitions 16/231 dead transitions. [2024-06-03 19:19:36,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 231 transitions, 2300 flow [2024-06-03 19:19:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:19:36,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-03 19:19:36,984 INFO L175 Difference]: Start difference. First operand has 254 places, 208 transitions, 1760 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:19:36,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 231 transitions, 2300 flow [2024-06-03 19:19:37,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 231 transitions, 2222 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 19:19:37,078 INFO L231 Difference]: Finished difference. Result has 255 places, 204 transitions, 1687 flow [2024-06-03 19:19:37,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1687, PETRI_PLACES=255, PETRI_TRANSITIONS=204} [2024-06-03 19:19:37,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-03 19:19:37,078 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 204 transitions, 1687 flow [2024-06-03 19:19:37,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:37,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:37,079 INFO 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 19:19:37,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 19:19:37,079 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 19:19:37,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1572356600, now seen corresponding path program 2 times [2024-06-03 19:19:37,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:37,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290609727] [2024-06-03 19:19:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:37,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:38,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:38,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290609727] [2024-06-03 19:19:38,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290609727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:38,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:38,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253785786] [2024-06-03 19:19:38,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:38,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:38,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:38,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:38,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:38,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:38,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 204 transitions, 1687 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:38,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:38,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:38,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:38,532 INFO L124 PetriNetUnfolderBase]: 427/848 cut-off events. [2024-06-03 19:19:38,532 INFO L125 PetriNetUnfolderBase]: For 27062/27062 co-relation queries the response was YES. [2024-06-03 19:19:38,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 848 events. 427/848 cut-off events. For 27062/27062 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4741 event pairs, 63 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 4000. Up to 741 conditions per place. [2024-06-03 19:19:38,538 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 22 changer transitions 0/223 dead transitions. [2024-06-03 19:19:38,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 223 transitions, 2187 flow [2024-06-03 19:19:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:38,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:19:38,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-03 19:19:38,539 INFO L175 Difference]: Start difference. First operand has 255 places, 204 transitions, 1687 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:19:38,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 223 transitions, 2187 flow [2024-06-03 19:19:38,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 223 transitions, 2145 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:19:38,626 INFO L231 Difference]: Finished difference. Result has 249 places, 205 transitions, 1711 flow [2024-06-03 19:19:38,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1711, PETRI_PLACES=249, PETRI_TRANSITIONS=205} [2024-06-03 19:19:38,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-03 19:19:38,627 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 205 transitions, 1711 flow [2024-06-03 19:19:38,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:38,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:38,627 INFO 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 19:19:38,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 19:19:38,628 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 19:19:38,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:38,629 INFO L85 PathProgramCache]: Analyzing trace with hash -875131880, now seen corresponding path program 3 times [2024-06-03 19:19:38,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:38,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602438949] [2024-06-03 19:19:38,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:38,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:39,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:39,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602438949] [2024-06-03 19:19:39,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602438949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:39,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:39,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:39,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018450201] [2024-06-03 19:19:39,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:39,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:39,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:39,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:39,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 205 transitions, 1711 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:39,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:39,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:39,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:40,114 INFO L124 PetriNetUnfolderBase]: 438/869 cut-off events. [2024-06-03 19:19:40,115 INFO L125 PetriNetUnfolderBase]: For 31462/31462 co-relation queries the response was YES. [2024-06-03 19:19:40,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4380 conditions, 869 events. 438/869 cut-off events. For 31462/31462 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4862 event pairs, 69 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 4266. Up to 755 conditions per place. [2024-06-03 19:19:40,122 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 25 changer transitions 0/226 dead transitions. [2024-06-03 19:19:40,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 226 transitions, 2375 flow [2024-06-03 19:19:40,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-03 19:19:40,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-03 19:19:40,125 INFO L175 Difference]: Start difference. First operand has 249 places, 205 transitions, 1711 flow. Second operand 11 states and 133 transitions. [2024-06-03 19:19:40,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 226 transitions, 2375 flow [2024-06-03 19:19:40,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 226 transitions, 2319 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 19:19:40,237 INFO L231 Difference]: Finished difference. Result has 252 places, 208 transitions, 1761 flow [2024-06-03 19:19:40,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1761, PETRI_PLACES=252, PETRI_TRANSITIONS=208} [2024-06-03 19:19:40,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-03 19:19:40,238 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 208 transitions, 1761 flow [2024-06-03 19:19:40,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:40,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:40,239 INFO 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 19:19:40,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 19:19:40,239 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 19:19:40,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:40,240 INFO L85 PathProgramCache]: Analyzing trace with hash -705747240, now seen corresponding path program 4 times [2024-06-03 19:19:40,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:40,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013112453] [2024-06-03 19:19:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:40,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:41,456 INFO 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 19:19:41,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:41,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013112453] [2024-06-03 19:19:41,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013112453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:41,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:41,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:41,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340182950] [2024-06-03 19:19:41,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:41,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:41,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:41,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:41,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:41,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:41,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 208 transitions, 1761 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:41,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:41,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:41,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:41,850 INFO L124 PetriNetUnfolderBase]: 435/864 cut-off events. [2024-06-03 19:19:41,850 INFO L125 PetriNetUnfolderBase]: For 28044/28044 co-relation queries the response was YES. [2024-06-03 19:19:41,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4236 conditions, 864 events. 435/864 cut-off events. For 28044/28044 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4845 event pairs, 76 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 4120. Up to 767 conditions per place. [2024-06-03 19:19:41,857 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 24 changer transitions 0/224 dead transitions. [2024-06-03 19:19:41,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 224 transitions, 2243 flow [2024-06-03 19:19:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:19:41,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-03 19:19:41,859 INFO L175 Difference]: Start difference. First operand has 252 places, 208 transitions, 1761 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:19:41,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 224 transitions, 2243 flow [2024-06-03 19:19:41,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 224 transitions, 2184 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-03 19:19:41,961 INFO L231 Difference]: Finished difference. Result has 257 places, 208 transitions, 1754 flow [2024-06-03 19:19:41,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1754, PETRI_PLACES=257, PETRI_TRANSITIONS=208} [2024-06-03 19:19:41,962 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-03 19:19:41,962 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 208 transitions, 1754 flow [2024-06-03 19:19:41,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:41,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:41,962 INFO 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 19:19:41,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 19:19:41,963 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 19:19:41,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:41,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1077124360, now seen corresponding path program 5 times [2024-06-03 19:19:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957358151] [2024-06-03 19:19:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:41,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:42,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957358151] [2024-06-03 19:19:42,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957358151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:42,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:42,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:42,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577143085] [2024-06-03 19:19:42,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:42,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:42,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:42,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:43,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:43,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 208 transitions, 1754 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:43,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:43,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:43,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:43,341 INFO L124 PetriNetUnfolderBase]: 447/892 cut-off events. [2024-06-03 19:19:43,342 INFO L125 PetriNetUnfolderBase]: For 40926/40926 co-relation queries the response was YES. [2024-06-03 19:19:43,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4342 conditions, 892 events. 447/892 cut-off events. For 40926/40926 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4998 event pairs, 59 based on Foata normal form. 8/900 useless extension candidates. Maximal degree in co-relation 4224. Up to 727 conditions per place. [2024-06-03 19:19:43,349 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 193 selfloop transitions, 17 changer transitions 18/231 dead transitions. [2024-06-03 19:19:43,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 231 transitions, 2296 flow [2024-06-03 19:19:43,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:43,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:43,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 19:19:43,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:19:43,350 INFO L175 Difference]: Start difference. First operand has 257 places, 208 transitions, 1754 flow. Second operand 11 states and 132 transitions. [2024-06-03 19:19:43,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 231 transitions, 2296 flow [2024-06-03 19:19:43,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 231 transitions, 2245 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-03 19:19:43,476 INFO L231 Difference]: Finished difference. Result has 258 places, 203 transitions, 1706 flow [2024-06-03 19:19:43,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=258, PETRI_TRANSITIONS=203} [2024-06-03 19:19:43,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-03 19:19:43,476 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 203 transitions, 1706 flow [2024-06-03 19:19:43,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:43,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:43,477 INFO 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 19:19:43,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 19:19:43,477 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 19:19:43,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1567588056, now seen corresponding path program 1 times [2024-06-03 19:19:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:43,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295181715] [2024-06-03 19:19:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:44,782 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 19:19:44,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295181715] [2024-06-03 19:19:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295181715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:44,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:44,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:19:44,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147525941] [2024-06-03 19:19:44,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:44,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:19:44,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:44,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:19:44,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:19:44,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:44,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 203 transitions, 1706 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:44,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:44,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:44,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:45,243 INFO L124 PetriNetUnfolderBase]: 430/855 cut-off events. [2024-06-03 19:19:45,243 INFO L125 PetriNetUnfolderBase]: For 42111/42111 co-relation queries the response was YES. [2024-06-03 19:19:45,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4264 conditions, 855 events. 430/855 cut-off events. For 42111/42111 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4772 event pairs, 66 based on Foata normal form. 8/863 useless extension candidates. Maximal degree in co-relation 4145. Up to 731 conditions per place. [2024-06-03 19:19:45,252 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 21 changer transitions 9/222 dead transitions. [2024-06-03 19:19:45,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 222 transitions, 2240 flow [2024-06-03 19:19:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:19:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:19:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-03 19:19:45,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-03 19:19:45,253 INFO L175 Difference]: Start difference. First operand has 258 places, 203 transitions, 1706 flow. Second operand 12 states and 140 transitions. [2024-06-03 19:19:45,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 222 transitions, 2240 flow [2024-06-03 19:19:45,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 222 transitions, 2196 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:19:45,373 INFO L231 Difference]: Finished difference. Result has 253 places, 200 transitions, 1683 flow [2024-06-03 19:19:45,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1683, PETRI_PLACES=253, PETRI_TRANSITIONS=200} [2024-06-03 19:19:45,373 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-03 19:19:45,373 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 200 transitions, 1683 flow [2024-06-03 19:19:45,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:45,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:45,374 INFO 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 19:19:45,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 19:19:45,374 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 19:19:45,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:45,374 INFO L85 PathProgramCache]: Analyzing trace with hash -689829964, now seen corresponding path program 6 times [2024-06-03 19:19:45,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:45,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243159637] [2024-06-03 19:19:45,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:45,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:46,251 INFO 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 19:19:46,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:46,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243159637] [2024-06-03 19:19:46,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243159637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:46,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:46,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:46,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869088781] [2024-06-03 19:19:46,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:46,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:46,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:46,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:46,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:46,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:46,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 200 transitions, 1683 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:46,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:46,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:46,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:46,640 INFO L124 PetriNetUnfolderBase]: 417/828 cut-off events. [2024-06-03 19:19:46,641 INFO L125 PetriNetUnfolderBase]: For 29409/29409 co-relation queries the response was YES. [2024-06-03 19:19:46,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 828 events. 417/828 cut-off events. For 29409/29409 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4589 event pairs, 64 based on Foata normal form. 2/830 useless extension candidates. Maximal degree in co-relation 4004. Up to 725 conditions per place. [2024-06-03 19:19:46,647 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 17 changer transitions 0/220 dead transitions. [2024-06-03 19:19:46,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 220 transitions, 2185 flow [2024-06-03 19:19:46,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:19:46,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-03 19:19:46,649 INFO L175 Difference]: Start difference. First operand has 253 places, 200 transitions, 1683 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:19:46,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 220 transitions, 2185 flow [2024-06-03 19:19:46,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 220 transitions, 2135 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:19:46,753 INFO L231 Difference]: Finished difference. Result has 251 places, 201 transitions, 1693 flow [2024-06-03 19:19:46,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1693, PETRI_PLACES=251, PETRI_TRANSITIONS=201} [2024-06-03 19:19:46,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-03 19:19:46,754 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 201 transitions, 1693 flow [2024-06-03 19:19:46,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:46,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:46,754 INFO 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 19:19:46,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 19:19:46,755 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 19:19:46,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:46,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1904935612, now seen corresponding path program 7 times [2024-06-03 19:19:46,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:46,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560788984] [2024-06-03 19:19:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:46,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:47,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:47,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:47,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560788984] [2024-06-03 19:19:47,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560788984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:47,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:47,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:47,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042337442] [2024-06-03 19:19:47,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:47,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:47,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:47,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:47,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:47,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:47,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 201 transitions, 1693 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:47,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:47,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:47,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:48,036 INFO L124 PetriNetUnfolderBase]: 421/836 cut-off events. [2024-06-03 19:19:48,037 INFO L125 PetriNetUnfolderBase]: For 29593/29593 co-relation queries the response was YES. [2024-06-03 19:19:48,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4179 conditions, 836 events. 421/836 cut-off events. For 29593/29593 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4641 event pairs, 47 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 4063. Up to 731 conditions per place. [2024-06-03 19:19:48,044 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 20 changer transitions 0/218 dead transitions. [2024-06-03 19:19:48,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 218 transitions, 2185 flow [2024-06-03 19:19:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-03 19:19:48,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-03 19:19:48,045 INFO L175 Difference]: Start difference. First operand has 251 places, 201 transitions, 1693 flow. Second operand 11 states and 128 transitions. [2024-06-03 19:19:48,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 218 transitions, 2185 flow [2024-06-03 19:19:48,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 218 transitions, 2135 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-03 19:19:48,144 INFO L231 Difference]: Finished difference. Result has 253 places, 202 transitions, 1711 flow [2024-06-03 19:19:48,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1711, PETRI_PLACES=253, PETRI_TRANSITIONS=202} [2024-06-03 19:19:48,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-03 19:19:48,145 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 202 transitions, 1711 flow [2024-06-03 19:19:48,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:48,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:48,145 INFO 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 19:19:48,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 19:19:48,145 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 19:19:48,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash -571742284, now seen corresponding path program 8 times [2024-06-03 19:19:48,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:48,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192845389] [2024-06-03 19:19:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:48,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:49,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:49,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192845389] [2024-06-03 19:19:49,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192845389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:49,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:49,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:49,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599591505] [2024-06-03 19:19:49,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:49,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:49,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:49,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:49,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:49,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:49,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 202 transitions, 1711 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:49,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:49,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:49,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:49,538 INFO L124 PetriNetUnfolderBase]: 462/927 cut-off events. [2024-06-03 19:19:49,538 INFO L125 PetriNetUnfolderBase]: For 66389/66389 co-relation queries the response was YES. [2024-06-03 19:19:49,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5327 conditions, 927 events. 462/927 cut-off events. For 66389/66389 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5266 event pairs, 68 based on Foata normal form. 8/935 useless extension candidates. Maximal degree in co-relation 5210. Up to 728 conditions per place. [2024-06-03 19:19:49,546 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 20 changer transitions 7/225 dead transitions. [2024-06-03 19:19:49,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 225 transitions, 2455 flow [2024-06-03 19:19:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:19:49,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-03 19:19:49,548 INFO L175 Difference]: Start difference. First operand has 253 places, 202 transitions, 1711 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:19:49,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 225 transitions, 2455 flow [2024-06-03 19:19:49,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 225 transitions, 2397 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-03 19:19:49,704 INFO L231 Difference]: Finished difference. Result has 255 places, 200 transitions, 1678 flow [2024-06-03 19:19:49,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1678, PETRI_PLACES=255, PETRI_TRANSITIONS=200} [2024-06-03 19:19:49,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-03 19:19:49,705 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 200 transitions, 1678 flow [2024-06-03 19:19:49,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:49,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:49,705 INFO 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 19:19:49,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 19:19:49,706 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 19:19:49,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:49,706 INFO L85 PathProgramCache]: Analyzing trace with hash 302176026, now seen corresponding path program 9 times [2024-06-03 19:19:49,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:49,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603297109] [2024-06-03 19:19:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:49,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:50,739 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 19:19:50,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:50,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603297109] [2024-06-03 19:19:50,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603297109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:50,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:50,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:50,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820919524] [2024-06-03 19:19:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:50,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:50,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:50,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:50,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:50,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 200 transitions, 1678 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:50,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:50,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:50,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:51,189 INFO L124 PetriNetUnfolderBase]: 431/866 cut-off events. [2024-06-03 19:19:51,190 INFO L125 PetriNetUnfolderBase]: For 50436/50436 co-relation queries the response was YES. [2024-06-03 19:19:51,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 866 events. 431/866 cut-off events. For 50436/50436 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4874 event pairs, 57 based on Foata normal form. 10/876 useless extension candidates. Maximal degree in co-relation 4204. Up to 728 conditions per place. [2024-06-03 19:19:51,196 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 185 selfloop transitions, 16 changer transitions 14/218 dead transitions. [2024-06-03 19:19:51,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 218 transitions, 2224 flow [2024-06-03 19:19:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 19:19:51,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-03 19:19:51,197 INFO L175 Difference]: Start difference. First operand has 255 places, 200 transitions, 1678 flow. Second operand 11 states and 131 transitions. [2024-06-03 19:19:51,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 218 transitions, 2224 flow [2024-06-03 19:19:51,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 218 transitions, 2183 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 19:19:51,305 INFO L231 Difference]: Finished difference. Result has 254 places, 194 transitions, 1621 flow [2024-06-03 19:19:51,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1621, PETRI_PLACES=254, PETRI_TRANSITIONS=194} [2024-06-03 19:19:51,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-03 19:19:51,306 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 194 transitions, 1621 flow [2024-06-03 19:19:51,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:51,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:51,306 INFO 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 19:19:51,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 19:19:51,307 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 19:19:51,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:51,307 INFO L85 PathProgramCache]: Analyzing trace with hash -451381140, now seen corresponding path program 10 times [2024-06-03 19:19:51,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:51,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834999426] [2024-06-03 19:19:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:51,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:52,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:52,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834999426] [2024-06-03 19:19:52,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834999426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:52,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:52,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:52,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475293334] [2024-06-03 19:19:52,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:52,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:52,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:52,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:52,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:52,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:52,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 194 transitions, 1621 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:52,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:52,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:52,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:52,918 INFO L124 PetriNetUnfolderBase]: 410/823 cut-off events. [2024-06-03 19:19:52,918 INFO L125 PetriNetUnfolderBase]: For 31259/31259 co-relation queries the response was YES. [2024-06-03 19:19:52,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4087 conditions, 823 events. 410/823 cut-off events. For 31259/31259 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4577 event pairs, 72 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 3970. Up to 725 conditions per place. [2024-06-03 19:19:52,924 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-06-03 19:19:52,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 209 transitions, 2091 flow [2024-06-03 19:19:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:52,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-03 19:19:52,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-03 19:19:52,933 INFO L175 Difference]: Start difference. First operand has 254 places, 194 transitions, 1621 flow. Second operand 11 states and 131 transitions. [2024-06-03 19:19:52,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 209 transitions, 2091 flow [2024-06-03 19:19:53,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 209 transitions, 2035 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:19:53,028 INFO L231 Difference]: Finished difference. Result has 248 places, 195 transitions, 1645 flow [2024-06-03 19:19:53,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1645, PETRI_PLACES=248, PETRI_TRANSITIONS=195} [2024-06-03 19:19:53,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-03 19:19:53,029 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 195 transitions, 1645 flow [2024-06-03 19:19:53,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:53,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:53,029 INFO 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 19:19:53,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 19:19:53,029 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 19:19:53,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash -405925520, now seen corresponding path program 11 times [2024-06-03 19:19:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:53,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614273621] [2024-06-03 19:19:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:53,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:53,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:53,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614273621] [2024-06-03 19:19:53,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614273621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:53,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:53,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:53,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196650108] [2024-06-03 19:19:53,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:53,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:53,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:53,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:53,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:54,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:54,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 195 transitions, 1645 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:54,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:54,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:54,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:54,301 INFO L124 PetriNetUnfolderBase]: 414/827 cut-off events. [2024-06-03 19:19:54,301 INFO L125 PetriNetUnfolderBase]: For 31525/31525 co-relation queries the response was YES. [2024-06-03 19:19:54,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 827 events. 414/827 cut-off events. For 31525/31525 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4603 event pairs, 72 based on Foata normal form. 2/829 useless extension candidates. Maximal degree in co-relation 4040. Up to 721 conditions per place. [2024-06-03 19:19:54,306 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 175 selfloop transitions, 32 changer transitions 0/210 dead transitions. [2024-06-03 19:19:54,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 210 transitions, 2119 flow [2024-06-03 19:19:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-03 19:19:54,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-03 19:19:54,307 INFO L175 Difference]: Start difference. First operand has 248 places, 195 transitions, 1645 flow. Second operand 11 states and 134 transitions. [2024-06-03 19:19:54,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 210 transitions, 2119 flow [2024-06-03 19:19:54,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 210 transitions, 2043 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-03 19:19:54,395 INFO L231 Difference]: Finished difference. Result has 249 places, 196 transitions, 1665 flow [2024-06-03 19:19:54,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1665, PETRI_PLACES=249, PETRI_TRANSITIONS=196} [2024-06-03 19:19:54,396 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-03 19:19:54,396 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 196 transitions, 1665 flow [2024-06-03 19:19:54,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:54,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:54,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:19:54,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 19:19:54,396 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 19:19:54,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:54,397 INFO L85 PathProgramCache]: Analyzing trace with hash -576805580, now seen corresponding path program 12 times [2024-06-03 19:19:54,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:54,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153584589] [2024-06-03 19:19:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:54,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:55,509 INFO 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 19:19:55,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:55,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153584589] [2024-06-03 19:19:55,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153584589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:55,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:55,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2971260] [2024-06-03 19:19:55,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:55,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:55,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:55,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:55,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:55,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:55,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 196 transitions, 1665 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:55,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:55,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:55,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:55,928 INFO L124 PetriNetUnfolderBase]: 426/855 cut-off events. [2024-06-03 19:19:55,928 INFO L125 PetriNetUnfolderBase]: For 44652/44652 co-relation queries the response was YES. [2024-06-03 19:19:55,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4253 conditions, 855 events. 426/855 cut-off events. For 44652/44652 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4789 event pairs, 72 based on Foata normal form. 8/863 useless extension candidates. Maximal degree in co-relation 4138. Up to 744 conditions per place. [2024-06-03 19:19:55,937 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 186 selfloop transitions, 14 changer transitions 11/214 dead transitions. [2024-06-03 19:19:55,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 214 transitions, 2167 flow [2024-06-03 19:19:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:19:55,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-03 19:19:55,938 INFO L175 Difference]: Start difference. First operand has 249 places, 196 transitions, 1665 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:19:55,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 214 transitions, 2167 flow [2024-06-03 19:19:56,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 214 transitions, 2081 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-03 19:19:56,035 INFO L231 Difference]: Finished difference. Result has 251 places, 193 transitions, 1572 flow [2024-06-03 19:19:56,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1572, PETRI_PLACES=251, PETRI_TRANSITIONS=193} [2024-06-03 19:19:56,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-03 19:19:56,035 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 193 transitions, 1572 flow [2024-06-03 19:19:56,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:56,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:56,036 INFO 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 19:19:56,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 19:19:56,036 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 19:19:56,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash -628632630, now seen corresponding path program 13 times [2024-06-03 19:19:56,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:56,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818301288] [2024-06-03 19:19:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:56,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:56,970 INFO 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 19:19:56,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:56,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818301288] [2024-06-03 19:19:56,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818301288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:56,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:56,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:56,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908009025] [2024-06-03 19:19:56,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:56,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:56,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:56,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:57,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:57,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 193 transitions, 1572 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:57,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:57,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:57,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:57,410 INFO L124 PetriNetUnfolderBase]: 419/842 cut-off events. [2024-06-03 19:19:57,410 INFO L125 PetriNetUnfolderBase]: For 45517/45517 co-relation queries the response was YES. [2024-06-03 19:19:57,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 842 events. 419/842 cut-off events. For 45517/45517 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4685 event pairs, 70 based on Foata normal form. 8/850 useless extension candidates. Maximal degree in co-relation 3998. Up to 726 conditions per place. [2024-06-03 19:19:57,416 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 12 changer transitions 14/212 dead transitions. [2024-06-03 19:19:57,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 212 transitions, 2072 flow [2024-06-03 19:19:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:57,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:19:57,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-03 19:19:57,417 INFO L175 Difference]: Start difference. First operand has 251 places, 193 transitions, 1572 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:19:57,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 212 transitions, 2072 flow [2024-06-03 19:19:57,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 212 transitions, 2036 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:19:57,517 INFO L231 Difference]: Finished difference. Result has 247 places, 189 transitions, 1537 flow [2024-06-03 19:19:57,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1537, PETRI_PLACES=247, PETRI_TRANSITIONS=189} [2024-06-03 19:19:57,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-03 19:19:57,518 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 189 transitions, 1537 flow [2024-06-03 19:19:57,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:57,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:57,518 INFO 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 19:19:57,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 19:19:57,518 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 19:19:57,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:57,519 INFO L85 PathProgramCache]: Analyzing trace with hash -406103150, now seen corresponding path program 14 times [2024-06-03 19:19:57,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:57,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501529220] [2024-06-03 19:19:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:57,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:19:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:19:58,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:19:58,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501529220] [2024-06-03 19:19:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501529220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:19:58,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:19:58,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:19:58,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381565771] [2024-06-03 19:19:58,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:19:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:19:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:19:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:19:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:19:58,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:19:58,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 189 transitions, 1537 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:58,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:19:58,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:19:58,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:19:59,076 INFO L124 PetriNetUnfolderBase]: 422/845 cut-off events. [2024-06-03 19:19:59,077 INFO L125 PetriNetUnfolderBase]: For 51275/51275 co-relation queries the response was YES. [2024-06-03 19:19:59,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4760 conditions, 845 events. 422/845 cut-off events. For 51275/51275 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4683 event pairs, 82 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4646. Up to 677 conditions per place. [2024-06-03 19:19:59,084 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 175 selfloop transitions, 31 changer transitions 0/209 dead transitions. [2024-06-03 19:19:59,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 209 transitions, 2209 flow [2024-06-03 19:19:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:19:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:19:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-03 19:19:59,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-03 19:19:59,085 INFO L175 Difference]: Start difference. First operand has 247 places, 189 transitions, 1537 flow. Second operand 11 states and 137 transitions. [2024-06-03 19:19:59,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 209 transitions, 2209 flow [2024-06-03 19:19:59,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 209 transitions, 2175 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:19:59,219 INFO L231 Difference]: Finished difference. Result has 242 places, 190 transitions, 1603 flow [2024-06-03 19:19:59,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=231, 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=11, PETRI_FLOW=1603, PETRI_PLACES=242, PETRI_TRANSITIONS=190} [2024-06-03 19:19:59,220 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-03 19:19:59,220 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 190 transitions, 1603 flow [2024-06-03 19:19:59,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:19:59,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:19:59,220 INFO 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 19:19:59,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 19:19:59,221 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 19:19:59,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:19:59,221 INFO L85 PathProgramCache]: Analyzing trace with hash -399662466, now seen corresponding path program 2 times [2024-06-03 19:19:59,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:19:59,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481490083] [2024-06-03 19:19:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:19:59,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:19:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:01,156 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 19:20:01,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481490083] [2024-06-03 19:20:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481490083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:01,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:01,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:01,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765882720] [2024-06-03 19:20:01,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:01,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:01,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:01,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:01,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:01,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:01,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 190 transitions, 1603 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:01,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:01,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:01,705 INFO L124 PetriNetUnfolderBase]: 434/877 cut-off events. [2024-06-03 19:20:01,706 INFO L125 PetriNetUnfolderBase]: For 64866/64866 co-relation queries the response was YES. [2024-06-03 19:20:01,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 877 events. 434/877 cut-off events. For 64866/64866 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4931 event pairs, 90 based on Foata normal form. 8/885 useless extension candidates. Maximal degree in co-relation 4832. Up to 752 conditions per place. [2024-06-03 19:20:01,712 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 21 changer transitions 7/208 dead transitions. [2024-06-03 19:20:01,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 208 transitions, 2101 flow [2024-06-03 19:20:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:20:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:20:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-03 19:20:01,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-03 19:20:01,717 INFO L175 Difference]: Start difference. First operand has 242 places, 190 transitions, 1603 flow. Second operand 12 states and 142 transitions. [2024-06-03 19:20:01,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 208 transitions, 2101 flow [2024-06-03 19:20:01,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 208 transitions, 2015 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-03 19:20:01,865 INFO L231 Difference]: Finished difference. Result has 245 places, 187 transitions, 1535 flow [2024-06-03 19:20:01,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1535, PETRI_PLACES=245, PETRI_TRANSITIONS=187} [2024-06-03 19:20:01,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-03 19:20:01,866 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 187 transitions, 1535 flow [2024-06-03 19:20:01,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:01,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:01,866 INFO 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 19:20:01,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 19:20:01,867 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 19:20:01,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:01,867 INFO L85 PathProgramCache]: Analyzing trace with hash -451143556, now seen corresponding path program 3 times [2024-06-03 19:20:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:01,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076284625] [2024-06-03 19:20:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:01,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:03,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:03,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076284625] [2024-06-03 19:20:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076284625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:03,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:03,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:03,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094056502] [2024-06-03 19:20:03,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:03,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:03,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:03,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:03,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:03,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:03,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 187 transitions, 1535 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:03,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:03,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:03,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:03,598 INFO L124 PetriNetUnfolderBase]: 407/824 cut-off events. [2024-06-03 19:20:03,598 INFO L125 PetriNetUnfolderBase]: For 46040/46040 co-relation queries the response was YES. [2024-06-03 19:20:03,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 824 events. 407/824 cut-off events. For 46040/46040 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4592 event pairs, 78 based on Foata normal form. 8/832 useless extension candidates. Maximal degree in co-relation 3942. Up to 693 conditions per place. [2024-06-03 19:20:03,604 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 172 selfloop transitions, 24 changer transitions 7/206 dead transitions. [2024-06-03 19:20:03,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 206 transitions, 2031 flow [2024-06-03 19:20:03,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-03 19:20:03,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-03 19:20:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 152 transitions. [2024-06-03 19:20:03,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3771712158808933 [2024-06-03 19:20:03,606 INFO L175 Difference]: Start difference. First operand has 245 places, 187 transitions, 1535 flow. Second operand 13 states and 152 transitions. [2024-06-03 19:20:03,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 206 transitions, 2031 flow [2024-06-03 19:20:03,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 206 transitions, 1981 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:20:03,721 INFO L231 Difference]: Finished difference. Result has 245 places, 184 transitions, 1512 flow [2024-06-03 19:20:03,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1512, PETRI_PLACES=245, PETRI_TRANSITIONS=184} [2024-06-03 19:20:03,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-03 19:20:03,721 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 184 transitions, 1512 flow [2024-06-03 19:20:03,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:03,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:03,722 INFO 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 19:20:03,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 19:20:03,722 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 19:20:03,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash -399423456, now seen corresponding path program 4 times [2024-06-03 19:20:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:03,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672847446] [2024-06-03 19:20:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:03,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:05,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:05,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672847446] [2024-06-03 19:20:05,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672847446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:05,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:05,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:05,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747438004] [2024-06-03 19:20:05,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:05,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:05,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:05,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:05,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 184 transitions, 1512 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:05,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:05,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:05,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:05,523 INFO L124 PetriNetUnfolderBase]: 420/852 cut-off events. [2024-06-03 19:20:05,523 INFO L125 PetriNetUnfolderBase]: For 60075/60075 co-relation queries the response was YES. [2024-06-03 19:20:05,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 852 events. 420/852 cut-off events. For 60075/60075 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4762 event pairs, 65 based on Foata normal form. 6/858 useless extension candidates. Maximal degree in co-relation 4663. Up to 657 conditions per place. [2024-06-03 19:20:05,529 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 166 selfloop transitions, 29 changer transitions 7/205 dead transitions. [2024-06-03 19:20:05,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 205 transitions, 2186 flow [2024-06-03 19:20:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:20:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:20:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-03 19:20:05,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-03 19:20:05,549 INFO L175 Difference]: Start difference. First operand has 245 places, 184 transitions, 1512 flow. Second operand 12 states and 145 transitions. [2024-06-03 19:20:05,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 205 transitions, 2186 flow [2024-06-03 19:20:05,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 205 transitions, 2130 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-03 19:20:05,702 INFO L231 Difference]: Finished difference. Result has 243 places, 181 transitions, 1488 flow [2024-06-03 19:20:05,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1488, PETRI_PLACES=243, PETRI_TRANSITIONS=181} [2024-06-03 19:20:05,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-03 19:20:05,702 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 181 transitions, 1488 flow [2024-06-03 19:20:05,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:05,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:05,703 INFO 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 19:20:05,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 19:20:05,703 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 19:20:05,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:05,703 INFO L85 PathProgramCache]: Analyzing trace with hash -457630306, now seen corresponding path program 5 times [2024-06-03 19:20:05,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:05,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656390885] [2024-06-03 19:20:05,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:05,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:07,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:07,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656390885] [2024-06-03 19:20:07,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656390885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:07,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:07,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:07,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018414147] [2024-06-03 19:20:07,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:07,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:07,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:07,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:07,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:07,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:07,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 181 transitions, 1488 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:07,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:07,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:07,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:08,125 INFO L124 PetriNetUnfolderBase]: 395/798 cut-off events. [2024-06-03 19:20:08,125 INFO L125 PetriNetUnfolderBase]: For 46073/46073 co-relation queries the response was YES. [2024-06-03 19:20:08,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3956 conditions, 798 events. 395/798 cut-off events. For 46073/46073 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4395 event pairs, 76 based on Foata normal form. 8/806 useless extension candidates. Maximal degree in co-relation 3843. Up to 685 conditions per place. [2024-06-03 19:20:08,132 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 169 selfloop transitions, 18 changer transitions 9/199 dead transitions. [2024-06-03 19:20:08,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 199 transitions, 1968 flow [2024-06-03 19:20:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:20:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:20:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-03 19:20:08,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-03 19:20:08,134 INFO L175 Difference]: Start difference. First operand has 243 places, 181 transitions, 1488 flow. Second operand 12 states and 139 transitions. [2024-06-03 19:20:08,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 199 transitions, 1968 flow [2024-06-03 19:20:08,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 199 transitions, 1904 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:20:08,264 INFO L231 Difference]: Finished difference. Result has 241 places, 178 transitions, 1438 flow [2024-06-03 19:20:08,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1438, PETRI_PLACES=241, PETRI_TRANSITIONS=178} [2024-06-03 19:20:08,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-03 19:20:08,265 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 178 transitions, 1438 flow [2024-06-03 19:20:08,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:08,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:08,265 INFO 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 19:20:08,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 19:20:08,265 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 19:20:08,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:08,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1805617924, now seen corresponding path program 15 times [2024-06-03 19:20:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:08,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451709849] [2024-06-03 19:20:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:08,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:09,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:09,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451709849] [2024-06-03 19:20:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451709849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:09,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:09,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:09,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962165411] [2024-06-03 19:20:09,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:09,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:09,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:09,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:09,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:09,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 178 transitions, 1438 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:09,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:09,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:09,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:09,694 INFO L124 PetriNetUnfolderBase]: 382/771 cut-off events. [2024-06-03 19:20:09,695 INFO L125 PetriNetUnfolderBase]: For 32322/32322 co-relation queries the response was YES. [2024-06-03 19:20:09,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3816 conditions, 771 events. 382/771 cut-off events. For 32322/32322 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4221 event pairs, 49 based on Foata normal form. 2/773 useless extension candidates. Maximal degree in co-relation 3704. Up to 620 conditions per place. [2024-06-03 19:20:09,700 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 162 selfloop transitions, 29 changer transitions 0/194 dead transitions. [2024-06-03 19:20:09,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 194 transitions, 1886 flow [2024-06-03 19:20:09,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:20:09,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-03 19:20:09,704 INFO L175 Difference]: Start difference. First operand has 241 places, 178 transitions, 1438 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:20:09,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 194 transitions, 1886 flow [2024-06-03 19:20:09,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 194 transitions, 1844 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:20:09,810 INFO L231 Difference]: Finished difference. Result has 236 places, 179 transitions, 1494 flow [2024-06-03 19:20:09,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1494, PETRI_PLACES=236, PETRI_TRANSITIONS=179} [2024-06-03 19:20:09,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-03 19:20:09,811 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 179 transitions, 1494 flow [2024-06-03 19:20:09,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:09,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:09,811 INFO 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 19:20:09,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 19:20:09,812 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 19:20:09,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash 107270666, now seen corresponding path program 16 times [2024-06-03 19:20:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:09,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040356459] [2024-06-03 19:20:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:09,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:10,723 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 19:20:10,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040356459] [2024-06-03 19:20:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040356459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:10,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465903777] [2024-06-03 19:20:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:10,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:10,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:10,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 179 transitions, 1494 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:10,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:10,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:10,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:11,111 INFO L124 PetriNetUnfolderBase]: 398/811 cut-off events. [2024-06-03 19:20:11,111 INFO L125 PetriNetUnfolderBase]: For 51585/51585 co-relation queries the response was YES. [2024-06-03 19:20:11,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4092 conditions, 811 events. 398/811 cut-off events. For 51585/51585 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4526 event pairs, 75 based on Foata normal form. 10/821 useless extension candidates. Maximal degree in co-relation 3981. Up to 655 conditions per place. [2024-06-03 19:20:11,117 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 22 changer transitions 15/196 dead transitions. [2024-06-03 19:20:11,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 196 transitions, 1996 flow [2024-06-03 19:20:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-03 19:20:11,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-03 19:20:11,118 INFO L175 Difference]: Start difference. First operand has 236 places, 179 transitions, 1494 flow. Second operand 10 states and 122 transitions. [2024-06-03 19:20:11,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 196 transitions, 1996 flow [2024-06-03 19:20:11,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 196 transitions, 1908 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 19:20:11,221 INFO L231 Difference]: Finished difference. Result has 238 places, 171 transitions, 1404 flow [2024-06-03 19:20:11,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1404, PETRI_PLACES=238, PETRI_TRANSITIONS=171} [2024-06-03 19:20:11,222 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-03 19:20:11,222 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 171 transitions, 1404 flow [2024-06-03 19:20:11,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:11,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:11,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:20:11,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 19:20:11,222 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 19:20:11,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash 107093036, now seen corresponding path program 17 times [2024-06-03 19:20:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:11,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452591427] [2024-06-03 19:20:11,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:11,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:12,021 INFO 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 19:20:12,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452591427] [2024-06-03 19:20:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452591427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:12,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:12,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360020332] [2024-06-03 19:20:12,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:12,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:12,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:12,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:12,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 171 transitions, 1404 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:12,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:12,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:12,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:12,425 INFO L124 PetriNetUnfolderBase]: 379/778 cut-off events. [2024-06-03 19:20:12,425 INFO L125 PetriNetUnfolderBase]: For 44154/44154 co-relation queries the response was YES. [2024-06-03 19:20:12,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 778 events. 379/778 cut-off events. For 44154/44154 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4268 event pairs, 64 based on Foata normal form. 8/786 useless extension candidates. Maximal degree in co-relation 3705. Up to 627 conditions per place. [2024-06-03 19:20:12,431 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 152 selfloop transitions, 18 changer transitions 15/188 dead transitions. [2024-06-03 19:20:12,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 188 transitions, 1852 flow [2024-06-03 19:20:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 19:20:12,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-03 19:20:12,444 INFO L175 Difference]: Start difference. First operand has 238 places, 171 transitions, 1404 flow. Second operand 10 states and 119 transitions. [2024-06-03 19:20:12,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 188 transitions, 1852 flow [2024-06-03 19:20:12,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 188 transitions, 1775 flow, removed 14 selfloop flow, removed 13 redundant places. [2024-06-03 19:20:12,531 INFO L231 Difference]: Finished difference. Result has 229 places, 164 transitions, 1326 flow [2024-06-03 19:20:12,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1326, PETRI_PLACES=229, PETRI_TRANSITIONS=164} [2024-06-03 19:20:12,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-03 19:20:12,532 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 164 transitions, 1326 flow [2024-06-03 19:20:12,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:12,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:12,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:20:12,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 19:20:12,532 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 19:20:12,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:12,533 INFO L85 PathProgramCache]: Analyzing trace with hash 617551492, now seen corresponding path program 18 times [2024-06-03 19:20:12,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:12,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481557924] [2024-06-03 19:20:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:12,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:13,304 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 19:20:13,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:13,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481557924] [2024-06-03 19:20:13,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481557924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:13,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:13,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:13,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013246024] [2024-06-03 19:20:13,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:13,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:13,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:13,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:13,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:13,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:13,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 164 transitions, 1326 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:13,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:13,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:13,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:13,658 INFO L124 PetriNetUnfolderBase]: 361/744 cut-off events. [2024-06-03 19:20:13,658 INFO L125 PetriNetUnfolderBase]: For 39341/39341 co-relation queries the response was YES. [2024-06-03 19:20:13,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3582 conditions, 744 events. 361/744 cut-off events. For 39341/39341 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4027 event pairs, 55 based on Foata normal form. 8/752 useless extension candidates. Maximal degree in co-relation 3489. Up to 568 conditions per place. [2024-06-03 19:20:13,664 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 146 selfloop transitions, 13 changer transitions 21/183 dead transitions. [2024-06-03 19:20:13,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 183 transitions, 1762 flow [2024-06-03 19:20:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-03 19:20:13,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-03 19:20:13,665 INFO L175 Difference]: Start difference. First operand has 229 places, 164 transitions, 1326 flow. Second operand 10 states and 119 transitions. [2024-06-03 19:20:13,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 183 transitions, 1762 flow [2024-06-03 19:20:13,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 183 transitions, 1703 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-03 19:20:13,769 INFO L231 Difference]: Finished difference. Result has 220 places, 155 transitions, 1233 flow [2024-06-03 19:20:13,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1233, PETRI_PLACES=220, PETRI_TRANSITIONS=155} [2024-06-03 19:20:13,771 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-03 19:20:13,772 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 155 transitions, 1233 flow [2024-06-03 19:20:13,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:13,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:13,772 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 19:20:13,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 19:20:13,772 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 19:20:13,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash -771710940, now seen corresponding path program 19 times [2024-06-03 19:20:13,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:13,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121999375] [2024-06-03 19:20:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:13,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:14,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121999375] [2024-06-03 19:20:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121999375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:14,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162861271] [2024-06-03 19:20:14,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:14,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:14,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:14,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:14,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:14,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:14,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 155 transitions, 1233 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:14,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:14,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:14,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:15,015 INFO L124 PetriNetUnfolderBase]: 325/676 cut-off events. [2024-06-03 19:20:15,016 INFO L125 PetriNetUnfolderBase]: For 34682/34682 co-relation queries the response was YES. [2024-06-03 19:20:15,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3272 conditions, 676 events. 325/676 cut-off events. For 34682/34682 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3577 event pairs, 56 based on Foata normal form. 8/684 useless extension candidates. Maximal degree in co-relation 3183. Up to 562 conditions per place. [2024-06-03 19:20:15,021 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 143 selfloop transitions, 14 changer transitions 11/171 dead transitions. [2024-06-03 19:20:15,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 171 transitions, 1635 flow [2024-06-03 19:20:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:20:15,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-03 19:20:15,022 INFO L175 Difference]: Start difference. First operand has 220 places, 155 transitions, 1233 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:20:15,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 171 transitions, 1635 flow [2024-06-03 19:20:15,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 171 transitions, 1595 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-03 19:20:15,114 INFO L231 Difference]: Finished difference. Result has 209 places, 152 transitions, 1206 flow [2024-06-03 19:20:15,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1206, PETRI_PLACES=209, PETRI_TRANSITIONS=152} [2024-06-03 19:20:15,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-03 19:20:15,115 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 152 transitions, 1206 flow [2024-06-03 19:20:15,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:15,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:15,115 INFO 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 19:20:15,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 19:20:15,115 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 19:20:15,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash -771826260, now seen corresponding path program 20 times [2024-06-03 19:20:15,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:15,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389185509] [2024-06-03 19:20:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:15,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:16,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389185509] [2024-06-03 19:20:16,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389185509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:16,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:16,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:16,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729288857] [2024-06-03 19:20:16,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:16,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:16,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:16,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:16,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 152 transitions, 1206 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:16,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:16,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:16,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:16,487 INFO L124 PetriNetUnfolderBase]: 318/663 cut-off events. [2024-06-03 19:20:16,487 INFO L125 PetriNetUnfolderBase]: For 30538/30538 co-relation queries the response was YES. [2024-06-03 19:20:16,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 663 events. 318/663 cut-off events. For 30538/30538 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3485 event pairs, 52 based on Foata normal form. 8/671 useless extension candidates. Maximal degree in co-relation 3091. Up to 544 conditions per place. [2024-06-03 19:20:16,491 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 140 selfloop transitions, 12 changer transitions 14/169 dead transitions. [2024-06-03 19:20:16,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 169 transitions, 1604 flow [2024-06-03 19:20:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:20:16,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-03 19:20:16,513 INFO L175 Difference]: Start difference. First operand has 209 places, 152 transitions, 1206 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:20:16,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 169 transitions, 1604 flow [2024-06-03 19:20:16,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 169 transitions, 1570 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:20:16,578 INFO L231 Difference]: Finished difference. Result has 205 places, 148 transitions, 1179 flow [2024-06-03 19:20:16,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1179, PETRI_PLACES=205, PETRI_TRANSITIONS=148} [2024-06-03 19:20:16,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-03 19:20:16,579 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 148 transitions, 1179 flow [2024-06-03 19:20:16,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:16,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:16,579 INFO 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 19:20:16,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 19:20:16,579 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 19:20:16,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1628961080, now seen corresponding path program 21 times [2024-06-03 19:20:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:16,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551027292] [2024-06-03 19:20:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:17,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:17,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551027292] [2024-06-03 19:20:17,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551027292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:17,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:17,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969012580] [2024-06-03 19:20:17,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:17,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:17,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:17,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:17,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:17,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 148 transitions, 1179 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:17,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:17,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:17,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:18,316 INFO L124 PetriNetUnfolderBase]: 311/648 cut-off events. [2024-06-03 19:20:18,317 INFO L125 PetriNetUnfolderBase]: For 33178/33178 co-relation queries the response was YES. [2024-06-03 19:20:18,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 648 events. 311/648 cut-off events. For 33178/33178 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3387 event pairs, 56 based on Foata normal form. 10/658 useless extension candidates. Maximal degree in co-relation 3081. Up to 494 conditions per place. [2024-06-03 19:20:18,322 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 32 changer transitions 6/164 dead transitions. [2024-06-03 19:20:18,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 164 transitions, 1591 flow [2024-06-03 19:20:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-03 19:20:18,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-03 19:20:18,323 INFO L175 Difference]: Start difference. First operand has 205 places, 148 transitions, 1179 flow. Second operand 10 states and 123 transitions. [2024-06-03 19:20:18,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 164 transitions, 1591 flow [2024-06-03 19:20:18,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 164 transitions, 1561 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 19:20:18,375 INFO L231 Difference]: Finished difference. Result has 200 places, 146 transitions, 1219 flow [2024-06-03 19:20:18,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1219, PETRI_PLACES=200, PETRI_TRANSITIONS=146} [2024-06-03 19:20:18,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-03 19:20:18,376 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 146 transitions, 1219 flow [2024-06-03 19:20:18,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:18,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:18,376 INFO 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 19:20:18,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 19:20:18,377 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 19:20:18,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:18,377 INFO L85 PathProgramCache]: Analyzing trace with hash -600830880, now seen corresponding path program 22 times [2024-06-03 19:20:18,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417981815] [2024-06-03 19:20:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:19,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:19,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417981815] [2024-06-03 19:20:19,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417981815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:19,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:19,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:19,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484007470] [2024-06-03 19:20:19,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:19,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:19,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:19,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:19,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:19,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:19,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 146 transitions, 1219 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:19,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:19,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:19,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:19,990 INFO L124 PetriNetUnfolderBase]: 298/615 cut-off events. [2024-06-03 19:20:19,990 INFO L125 PetriNetUnfolderBase]: For 19736/19736 co-relation queries the response was YES. [2024-06-03 19:20:19,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 615 events. 298/615 cut-off events. For 19736/19736 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3162 event pairs, 52 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 3015. Up to 511 conditions per place. [2024-06-03 19:20:19,994 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 29 changer transitions 0/159 dead transitions. [2024-06-03 19:20:19,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 159 transitions, 1583 flow [2024-06-03 19:20:19,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:20:19,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-03 19:20:19,995 INFO L175 Difference]: Start difference. First operand has 200 places, 146 transitions, 1219 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:20:19,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 159 transitions, 1583 flow [2024-06-03 19:20:20,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 159 transitions, 1483 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-03 19:20:20,045 INFO L231 Difference]: Finished difference. Result has 200 places, 147 transitions, 1209 flow [2024-06-03 19:20:20,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1209, PETRI_PLACES=200, PETRI_TRANSITIONS=147} [2024-06-03 19:20:20,045 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-03 19:20:20,046 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 147 transitions, 1209 flow [2024-06-03 19:20:20,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:20,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:20,046 INFO 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 19:20:20,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 19:20:20,046 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 19:20:20,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:20,047 INFO L85 PathProgramCache]: Analyzing trace with hash -601008510, now seen corresponding path program 23 times [2024-06-03 19:20:20,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:20,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942381633] [2024-06-03 19:20:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:20,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:21,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:21,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942381633] [2024-06-03 19:20:21,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942381633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:21,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:21,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:21,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250457840] [2024-06-03 19:20:21,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:21,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:21,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:21,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:21,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:21,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:21,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 147 transitions, 1209 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:21,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:21,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:21,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:21,648 INFO L124 PetriNetUnfolderBase]: 302/623 cut-off events. [2024-06-03 19:20:21,648 INFO L125 PetriNetUnfolderBase]: For 19719/19719 co-relation queries the response was YES. [2024-06-03 19:20:21,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 623 events. 302/623 cut-off events. For 19719/19719 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3230 event pairs, 50 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 3023. Up to 470 conditions per place. [2024-06-03 19:20:21,652 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 37 changer transitions 0/161 dead transitions. [2024-06-03 19:20:21,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 161 transitions, 1579 flow [2024-06-03 19:20:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:20:21,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-03 19:20:21,654 INFO L175 Difference]: Start difference. First operand has 200 places, 147 transitions, 1209 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:20:21,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 161 transitions, 1579 flow [2024-06-03 19:20:21,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 161 transitions, 1501 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:20:21,704 INFO L231 Difference]: Finished difference. Result has 202 places, 148 transitions, 1237 flow [2024-06-03 19:20:21,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1237, PETRI_PLACES=202, PETRI_TRANSITIONS=148} [2024-06-03 19:20:21,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-03 19:20:21,705 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 148 transitions, 1237 flow [2024-06-03 19:20:21,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:21,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:21,705 INFO 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 19:20:21,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 19:20:21,706 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 19:20:21,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash -594567826, now seen corresponding path program 6 times [2024-06-03 19:20:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274244479] [2024-06-03 19:20:21,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:21,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274244479] [2024-06-03 19:20:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274244479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:23,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:23,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:23,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582267322] [2024-06-03 19:20:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:23,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:23,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:23,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:23,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:23,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:23,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 148 transitions, 1237 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:23,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:23,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:23,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:23,599 INFO L124 PetriNetUnfolderBase]: 314/655 cut-off events. [2024-06-03 19:20:23,599 INFO L125 PetriNetUnfolderBase]: For 28136/28136 co-relation queries the response was YES. [2024-06-03 19:20:23,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3233 conditions, 655 events. 314/655 cut-off events. For 28136/28136 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3454 event pairs, 60 based on Foata normal form. 8/663 useless extension candidates. Maximal degree in co-relation 3151. Up to 524 conditions per place. [2024-06-03 19:20:23,603 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 26 changer transitions 9/164 dead transitions. [2024-06-03 19:20:23,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 164 transitions, 1629 flow [2024-06-03 19:20:23,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:20:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:20:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:20:23,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-03 19:20:23,604 INFO L175 Difference]: Start difference. First operand has 202 places, 148 transitions, 1237 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:20:23,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 164 transitions, 1629 flow [2024-06-03 19:20:23,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 164 transitions, 1548 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-03 19:20:23,655 INFO L231 Difference]: Finished difference. Result has 206 places, 145 transitions, 1188 flow [2024-06-03 19:20:23,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1156, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1188, PETRI_PLACES=206, PETRI_TRANSITIONS=145} [2024-06-03 19:20:23,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-03 19:20:23,656 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 145 transitions, 1188 flow [2024-06-03 19:20:23,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:23,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:23,657 INFO 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 19:20:23,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 19:20:23,657 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 19:20:23,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:23,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1628715126, now seen corresponding path program 7 times [2024-06-03 19:20:23,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:23,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960439895] [2024-06-03 19:20:23,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:23,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:24,948 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 19:20:24,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:24,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960439895] [2024-06-03 19:20:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960439895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:24,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:24,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:24,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848452486] [2024-06-03 19:20:24,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:24,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:25,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:25,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 145 transitions, 1188 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:25,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:25,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:25,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:25,395 INFO L124 PetriNetUnfolderBase]: 327/686 cut-off events. [2024-06-03 19:20:25,396 INFO L125 PetriNetUnfolderBase]: For 37079/37079 co-relation queries the response was YES. [2024-06-03 19:20:25,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 686 events. 327/686 cut-off events. For 37079/37079 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3676 event pairs, 68 based on Foata normal form. 6/692 useless extension candidates. Maximal degree in co-relation 3655. Up to 464 conditions per place. [2024-06-03 19:20:25,401 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 130 selfloop transitions, 24 changer transitions 7/164 dead transitions. [2024-06-03 19:20:25,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 164 transitions, 1722 flow [2024-06-03 19:20:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 19:20:25,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-03 19:20:25,402 INFO L175 Difference]: Start difference. First operand has 206 places, 145 transitions, 1188 flow. Second operand 10 states and 125 transitions. [2024-06-03 19:20:25,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 164 transitions, 1722 flow [2024-06-03 19:20:25,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 164 transitions, 1662 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:20:25,479 INFO L231 Difference]: Finished difference. Result has 203 places, 142 transitions, 1161 flow [2024-06-03 19:20:25,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1161, PETRI_PLACES=203, PETRI_TRANSITIONS=142} [2024-06-03 19:20:25,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-03 19:20:25,480 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 142 transitions, 1161 flow [2024-06-03 19:20:25,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:25,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:25,480 INFO 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 19:20:25,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 19:20:25,480 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 19:20:25,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:25,481 INFO L85 PathProgramCache]: Analyzing trace with hash -600823936, now seen corresponding path program 8 times [2024-06-03 19:20:25,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:25,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797367901] [2024-06-03 19:20:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:25,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:27,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:27,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797367901] [2024-06-03 19:20:27,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797367901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:27,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:27,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:27,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342426848] [2024-06-03 19:20:27,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:27,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:27,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:27,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:27,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 142 transitions, 1161 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:27,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:27,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:27,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:27,633 INFO L124 PetriNetUnfolderBase]: 317/664 cut-off events. [2024-06-03 19:20:27,634 INFO L125 PetriNetUnfolderBase]: For 36124/36124 co-relation queries the response was YES. [2024-06-03 19:20:27,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3487 conditions, 664 events. 317/664 cut-off events. For 36124/36124 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3509 event pairs, 73 based on Foata normal form. 8/672 useless extension candidates. Maximal degree in co-relation 3405. Up to 517 conditions per place. [2024-06-03 19:20:27,638 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 20 changer transitions 16/158 dead transitions. [2024-06-03 19:20:27,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 158 transitions, 1541 flow [2024-06-03 19:20:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:20:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:20:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:20:27,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-03 19:20:27,639 INFO L175 Difference]: Start difference. First operand has 203 places, 142 transitions, 1161 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:20:27,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 158 transitions, 1541 flow [2024-06-03 19:20:27,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 158 transitions, 1493 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:20:27,702 INFO L231 Difference]: Finished difference. Result has 201 places, 133 transitions, 1065 flow [2024-06-03 19:20:27,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1065, PETRI_PLACES=201, PETRI_TRANSITIONS=133} [2024-06-03 19:20:27,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-03 19:20:27,703 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 133 transitions, 1065 flow [2024-06-03 19:20:27,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:27,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:27,703 INFO 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 19:20:27,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 19:20:27,703 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 19:20:27,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:27,704 INFO L85 PathProgramCache]: Analyzing trace with hash -506293118, now seen corresponding path program 24 times [2024-06-03 19:20:27,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:27,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757316081] [2024-06-03 19:20:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:27,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:28,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:28,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757316081] [2024-06-03 19:20:28,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757316081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:28,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:28,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:28,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569241542] [2024-06-03 19:20:28,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:28,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:28,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:28,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:28,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 133 transitions, 1065 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:28,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:28,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:28,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:29,033 INFO L124 PetriNetUnfolderBase]: 320/677 cut-off events. [2024-06-03 19:20:29,034 INFO L125 PetriNetUnfolderBase]: For 42769/42769 co-relation queries the response was YES. [2024-06-03 19:20:29,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3877 conditions, 677 events. 320/677 cut-off events. For 42769/42769 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3551 event pairs, 86 based on Foata normal form. 8/685 useless extension candidates. Maximal degree in co-relation 3797. Up to 489 conditions per place. [2024-06-03 19:20:29,039 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 124 selfloop transitions, 17 changer transitions 10/154 dead transitions. [2024-06-03 19:20:29,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 154 transitions, 1605 flow [2024-06-03 19:20:29,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:29,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:20:29,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:20:29,040 INFO L175 Difference]: Start difference. First operand has 201 places, 133 transitions, 1065 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:20:29,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 154 transitions, 1605 flow [2024-06-03 19:20:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 154 transitions, 1511 flow, removed 20 selfloop flow, removed 13 redundant places. [2024-06-03 19:20:29,114 INFO L231 Difference]: Finished difference. Result has 191 places, 131 transitions, 1020 flow [2024-06-03 19:20:29,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1020, PETRI_PLACES=191, PETRI_TRANSITIONS=131} [2024-06-03 19:20:29,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-03 19:20:29,115 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 131 transitions, 1020 flow [2024-06-03 19:20:29,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:29,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:29,115 INFO 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 19:20:29,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 19:20:29,116 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 19:20:29,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash -958317766, now seen corresponding path program 25 times [2024-06-03 19:20:29,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:29,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052641093] [2024-06-03 19:20:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:29,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:30,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:30,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052641093] [2024-06-03 19:20:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052641093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:30,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:30,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258641718] [2024-06-03 19:20:30,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:30,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:30,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:30,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 131 transitions, 1020 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:30,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:30,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:30,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:30,406 INFO L124 PetriNetUnfolderBase]: 289/612 cut-off events. [2024-06-03 19:20:30,406 INFO L125 PetriNetUnfolderBase]: For 28954/28954 co-relation queries the response was YES. [2024-06-03 19:20:30,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3365 conditions, 612 events. 289/612 cut-off events. For 28954/28954 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3116 event pairs, 77 based on Foata normal form. 2/614 useless extension candidates. Maximal degree in co-relation 3288. Up to 529 conditions per place. [2024-06-03 19:20:30,410 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 120 selfloop transitions, 19 changer transitions 1/143 dead transitions. [2024-06-03 19:20:30,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 143 transitions, 1343 flow [2024-06-03 19:20:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:30,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-03 19:20:30,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-03 19:20:30,411 INFO L175 Difference]: Start difference. First operand has 191 places, 131 transitions, 1020 flow. Second operand 10 states and 114 transitions. [2024-06-03 19:20:30,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 143 transitions, 1343 flow [2024-06-03 19:20:30,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 143 transitions, 1302 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 19:20:30,472 INFO L231 Difference]: Finished difference. Result has 192 places, 132 transitions, 1043 flow [2024-06-03 19:20:30,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1043, PETRI_PLACES=192, PETRI_TRANSITIONS=132} [2024-06-03 19:20:30,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-03 19:20:30,472 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 132 transitions, 1043 flow [2024-06-03 19:20:30,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:30,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:30,473 INFO 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 19:20:30,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 19:20:30,473 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 19:20:30,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash -963079366, now seen corresponding path program 26 times [2024-06-03 19:20:30,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:30,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808245913] [2024-06-03 19:20:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:30,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:31,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808245913] [2024-06-03 19:20:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808245913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:31,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:31,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:31,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000795097] [2024-06-03 19:20:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:31,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:31,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:31,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:31,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:31,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 132 transitions, 1043 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:31,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:31,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:31,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:31,682 INFO L124 PetriNetUnfolderBase]: 300/637 cut-off events. [2024-06-03 19:20:31,683 INFO L125 PetriNetUnfolderBase]: For 33761/33761 co-relation queries the response was YES. [2024-06-03 19:20:31,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 637 events. 300/637 cut-off events. For 33761/33761 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3276 event pairs, 75 based on Foata normal form. 8/645 useless extension candidates. Maximal degree in co-relation 3372. Up to 520 conditions per place. [2024-06-03 19:20:31,687 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 117 selfloop transitions, 15 changer transitions 12/147 dead transitions. [2024-06-03 19:20:31,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 147 transitions, 1387 flow [2024-06-03 19:20:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 19:20:31,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-03 19:20:31,688 INFO L175 Difference]: Start difference. First operand has 192 places, 132 transitions, 1043 flow. Second operand 10 states and 117 transitions. [2024-06-03 19:20:31,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 147 transitions, 1387 flow [2024-06-03 19:20:31,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 147 transitions, 1333 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 19:20:31,751 INFO L231 Difference]: Finished difference. Result has 193 places, 129 transitions, 1006 flow [2024-06-03 19:20:31,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1006, PETRI_PLACES=193, PETRI_TRANSITIONS=129} [2024-06-03 19:20:31,751 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-03 19:20:31,752 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 129 transitions, 1006 flow [2024-06-03 19:20:31,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:31,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:31,752 INFO 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 19:20:31,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 19:20:31,752 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 19:20:31,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:31,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1658075308, now seen corresponding path program 27 times [2024-06-03 19:20:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:31,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417967789] [2024-06-03 19:20:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:31,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:32,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:32,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417967789] [2024-06-03 19:20:32,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417967789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:32,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:32,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:32,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918762614] [2024-06-03 19:20:32,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:32,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:32,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:33,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:33,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 129 transitions, 1006 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:33,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:33,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:33,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:33,300 INFO L124 PetriNetUnfolderBase]: 282/599 cut-off events. [2024-06-03 19:20:33,300 INFO L125 PetriNetUnfolderBase]: For 29139/29139 co-relation queries the response was YES. [2024-06-03 19:20:33,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3323 conditions, 599 events. 282/599 cut-off events. For 29139/29139 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3040 event pairs, 77 based on Foata normal form. 2/601 useless extension candidates. Maximal degree in co-relation 3246. Up to 501 conditions per place. [2024-06-03 19:20:33,304 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 112 selfloop transitions, 25 changer transitions 0/140 dead transitions. [2024-06-03 19:20:33,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 140 transitions, 1320 flow [2024-06-03 19:20:33,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-03 19:20:33,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-03 19:20:33,306 INFO L175 Difference]: Start difference. First operand has 193 places, 129 transitions, 1006 flow. Second operand 10 states and 118 transitions. [2024-06-03 19:20:33,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 140 transitions, 1320 flow [2024-06-03 19:20:33,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 140 transitions, 1284 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:20:33,361 INFO L231 Difference]: Finished difference. Result has 189 places, 130 transitions, 1044 flow [2024-06-03 19:20:33,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1044, PETRI_PLACES=189, PETRI_TRANSITIONS=130} [2024-06-03 19:20:33,362 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-03 19:20:33,362 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 130 transitions, 1044 flow [2024-06-03 19:20:33,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:33,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:33,362 INFO 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 19:20:33,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 19:20:33,363 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 19:20:33,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:33,363 INFO L85 PathProgramCache]: Analyzing trace with hash -792261616, now seen corresponding path program 28 times [2024-06-03 19:20:33,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:33,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107246828] [2024-06-03 19:20:33,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:33,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:34,680 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 19:20:34,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107246828] [2024-06-03 19:20:34,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107246828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:34,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:34,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:34,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941014925] [2024-06-03 19:20:34,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:34,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:34,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:34,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:34,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:34,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 130 transitions, 1044 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:34,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:34,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:34,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:35,106 INFO L124 PetriNetUnfolderBase]: 293/620 cut-off events. [2024-06-03 19:20:35,106 INFO L125 PetriNetUnfolderBase]: For 29444/29444 co-relation queries the response was YES. [2024-06-03 19:20:35,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3535 conditions, 620 events. 293/620 cut-off events. For 29444/29444 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3150 event pairs, 76 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3460. Up to 499 conditions per place. [2024-06-03 19:20:35,110 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 114 selfloop transitions, 27 changer transitions 0/144 dead transitions. [2024-06-03 19:20:35,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 144 transitions, 1486 flow [2024-06-03 19:20:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:20:35,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:20:35,112 INFO L175 Difference]: Start difference. First operand has 189 places, 130 transitions, 1044 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:20:35,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 144 transitions, 1486 flow [2024-06-03 19:20:35,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 144 transitions, 1422 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-03 19:20:35,168 INFO L231 Difference]: Finished difference. Result has 191 places, 132 transitions, 1080 flow [2024-06-03 19:20:35,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1080, PETRI_PLACES=191, PETRI_TRANSITIONS=132} [2024-06-03 19:20:35,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-03 19:20:35,169 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 132 transitions, 1080 flow [2024-06-03 19:20:35,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:35,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:35,169 INFO 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 19:20:35,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 19:20:35,170 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 19:20:35,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:35,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1627921342, now seen corresponding path program 29 times [2024-06-03 19:20:35,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:35,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836045366] [2024-06-03 19:20:35,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:36,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836045366] [2024-06-03 19:20:36,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836045366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:36,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:36,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:36,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400542059] [2024-06-03 19:20:36,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:36,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:36,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:36,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 132 transitions, 1080 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:36,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:36,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:36,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:36,502 INFO L124 PetriNetUnfolderBase]: 297/628 cut-off events. [2024-06-03 19:20:36,503 INFO L125 PetriNetUnfolderBase]: For 30781/30781 co-relation queries the response was YES. [2024-06-03 19:20:36,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3608 conditions, 628 events. 297/628 cut-off events. For 30781/30781 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3204 event pairs, 80 based on Foata normal form. 2/630 useless extension candidates. Maximal degree in co-relation 3532. Up to 438 conditions per place. [2024-06-03 19:20:36,507 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 60 changer transitions 0/143 dead transitions. [2024-06-03 19:20:36,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 143 transitions, 1404 flow [2024-06-03 19:20:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 19:20:36,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-03 19:20:36,508 INFO L175 Difference]: Start difference. First operand has 191 places, 132 transitions, 1080 flow. Second operand 10 states and 125 transitions. [2024-06-03 19:20:36,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 143 transitions, 1404 flow [2024-06-03 19:20:36,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 143 transitions, 1352 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-03 19:20:36,571 INFO L231 Difference]: Finished difference. Result has 195 places, 133 transitions, 1176 flow [2024-06-03 19:20:36,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1176, PETRI_PLACES=195, PETRI_TRANSITIONS=133} [2024-06-03 19:20:36,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-03 19:20:36,572 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 133 transitions, 1176 flow [2024-06-03 19:20:36,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:36,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:36,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:20:36,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 19:20:36,573 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 19:20:36,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash -822588562, now seen corresponding path program 30 times [2024-06-03 19:20:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:36,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574646721] [2024-06-03 19:20:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:37,647 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 19:20:37,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:37,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574646721] [2024-06-03 19:20:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574646721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:37,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:37,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:37,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201504326] [2024-06-03 19:20:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:37,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:37,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:37,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:37,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:37,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 133 transitions, 1176 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:37,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:37,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:37,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:37,950 INFO L124 PetriNetUnfolderBase]: 323/682 cut-off events. [2024-06-03 19:20:37,950 INFO L125 PetriNetUnfolderBase]: For 41436/41436 co-relation queries the response was YES. [2024-06-03 19:20:37,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 682 events. 323/682 cut-off events. For 41436/41436 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3577 event pairs, 90 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 4268. Up to 413 conditions per place. [2024-06-03 19:20:37,955 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 62 changer transitions 0/149 dead transitions. [2024-06-03 19:20:37,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 149 transitions, 1654 flow [2024-06-03 19:20:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-03 19:20:37,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-03 19:20:37,956 INFO L175 Difference]: Start difference. First operand has 195 places, 133 transitions, 1176 flow. Second operand 10 states and 130 transitions. [2024-06-03 19:20:37,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 149 transitions, 1654 flow [2024-06-03 19:20:38,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 149 transitions, 1516 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-03 19:20:38,032 INFO L231 Difference]: Finished difference. Result has 197 places, 134 transitions, 1190 flow [2024-06-03 19:20:38,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1038, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1190, PETRI_PLACES=197, PETRI_TRANSITIONS=134} [2024-06-03 19:20:38,032 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-03 19:20:38,032 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 134 transitions, 1190 flow [2024-06-03 19:20:38,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:38,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:38,033 INFO 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 19:20:38,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 19:20:38,033 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 19:20:38,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash -785827876, now seen corresponding path program 31 times [2024-06-03 19:20:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951754244] [2024-06-03 19:20:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:39,084 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 19:20:39,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:39,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951754244] [2024-06-03 19:20:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951754244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:39,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:39,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:39,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378521982] [2024-06-03 19:20:39,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:39,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:39,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:39,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:39,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:39,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 134 transitions, 1190 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:39,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:39,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:39,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:39,421 INFO L124 PetriNetUnfolderBase]: 320/677 cut-off events. [2024-06-03 19:20:39,422 INFO L125 PetriNetUnfolderBase]: For 40459/40459 co-relation queries the response was YES. [2024-06-03 19:20:39,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4229 conditions, 677 events. 320/677 cut-off events. For 40459/40459 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3542 event pairs, 91 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 4150. Up to 579 conditions per place. [2024-06-03 19:20:39,427 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 26 changer transitions 0/144 dead transitions. [2024-06-03 19:20:39,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 144 transitions, 1494 flow [2024-06-03 19:20:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 19:20:39,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-03 19:20:39,428 INFO L175 Difference]: Start difference. First operand has 197 places, 134 transitions, 1190 flow. Second operand 10 states and 117 transitions. [2024-06-03 19:20:39,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 144 transitions, 1494 flow [2024-06-03 19:20:39,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 144 transitions, 1331 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-03 19:20:39,507 INFO L231 Difference]: Finished difference. Result has 199 places, 134 transitions, 1083 flow [2024-06-03 19:20:39,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1083, PETRI_PLACES=199, PETRI_TRANSITIONS=134} [2024-06-03 19:20:39,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-03 19:20:39,507 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 134 transitions, 1083 flow [2024-06-03 19:20:39,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:39,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:39,507 INFO 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 19:20:39,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 19:20:39,508 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 19:20:39,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:39,508 INFO L85 PathProgramCache]: Analyzing trace with hash -816154822, now seen corresponding path program 32 times [2024-06-03 19:20:39,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:39,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672015878] [2024-06-03 19:20:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:39,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:40,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:40,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672015878] [2024-06-03 19:20:40,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672015878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:40,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:40,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:40,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44887016] [2024-06-03 19:20:40,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:40,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:40,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:40,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:40,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:40,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 134 transitions, 1083 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:40,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:40,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:40,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:40,948 INFO L124 PetriNetUnfolderBase]: 336/713 cut-off events. [2024-06-03 19:20:40,949 INFO L125 PetriNetUnfolderBase]: For 51634/51634 co-relation queries the response was YES. [2024-06-03 19:20:40,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4267 conditions, 713 events. 336/713 cut-off events. For 51634/51634 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3811 event pairs, 95 based on Foata normal form. 10/723 useless extension candidates. Maximal degree in co-relation 4188. Up to 491 conditions per place. [2024-06-03 19:20:40,954 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 87 selfloop transitions, 52 changer transitions 6/148 dead transitions. [2024-06-03 19:20:40,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 148 transitions, 1456 flow [2024-06-03 19:20:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:40,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-03 19:20:40,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-03 19:20:40,955 INFO L175 Difference]: Start difference. First operand has 199 places, 134 transitions, 1083 flow. Second operand 10 states and 129 transitions. [2024-06-03 19:20:40,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 148 transitions, 1456 flow [2024-06-03 19:20:41,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 148 transitions, 1398 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-03 19:20:41,034 INFO L231 Difference]: Finished difference. Result has 200 places, 132 transitions, 1136 flow [2024-06-03 19:20:41,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1136, PETRI_PLACES=200, PETRI_TRANSITIONS=132} [2024-06-03 19:20:41,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-03 19:20:41,035 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 132 transitions, 1136 flow [2024-06-03 19:20:41,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:41,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:41,035 INFO 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 19:20:41,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 19:20:41,035 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 19:20:41,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash 995758670, now seen corresponding path program 33 times [2024-06-03 19:20:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:41,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559611203] [2024-06-03 19:20:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:41,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:42,011 INFO 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 19:20:42,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:42,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559611203] [2024-06-03 19:20:42,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559611203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:42,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:42,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:42,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929079875] [2024-06-03 19:20:42,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:42,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:42,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:42,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:42,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 132 transitions, 1136 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:42,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:42,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:42,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:42,419 INFO L124 PetriNetUnfolderBase]: 306/656 cut-off events. [2024-06-03 19:20:42,420 INFO L125 PetriNetUnfolderBase]: For 40747/40747 co-relation queries the response was YES. [2024-06-03 19:20:42,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3579 conditions, 656 events. 306/656 cut-off events. For 40747/40747 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3436 event pairs, 107 based on Foata normal form. 10/666 useless extension candidates. Maximal degree in co-relation 3499. Up to 540 conditions per place. [2024-06-03 19:20:42,425 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 20 changer transitions 7/145 dead transitions. [2024-06-03 19:20:42,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 145 transitions, 1480 flow [2024-06-03 19:20:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-03 19:20:42,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-03 19:20:42,426 INFO L175 Difference]: Start difference. First operand has 200 places, 132 transitions, 1136 flow. Second operand 10 states and 121 transitions. [2024-06-03 19:20:42,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 145 transitions, 1480 flow [2024-06-03 19:20:42,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 145 transitions, 1334 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-03 19:20:42,500 INFO L231 Difference]: Finished difference. Result has 200 places, 128 transitions, 1007 flow [2024-06-03 19:20:42,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1007, PETRI_PLACES=200, PETRI_TRANSITIONS=128} [2024-06-03 19:20:42,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-03 19:20:42,501 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 128 transitions, 1007 flow [2024-06-03 19:20:42,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:42,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:42,501 INFO 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 19:20:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 19:20:42,502 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 19:20:42,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:42,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1169227780, now seen corresponding path program 9 times [2024-06-03 19:20:42,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:42,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801157341] [2024-06-03 19:20:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:42,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:44,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:44,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801157341] [2024-06-03 19:20:44,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801157341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:44,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:44,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:44,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503888127] [2024-06-03 19:20:44,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:44,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:44,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:44,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:44,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 128 transitions, 1007 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:44,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:44,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:44,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:44,670 INFO L124 PetriNetUnfolderBase]: 299/645 cut-off events. [2024-06-03 19:20:44,671 INFO L125 PetriNetUnfolderBase]: For 36056/36056 co-relation queries the response was YES. [2024-06-03 19:20:44,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 645 events. 299/645 cut-off events. For 36056/36056 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3378 event pairs, 101 based on Foata normal form. 6/651 useless extension candidates. Maximal degree in co-relation 3326. Up to 544 conditions per place. [2024-06-03 19:20:44,676 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 18 changer transitions 10/144 dead transitions. [2024-06-03 19:20:44,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 144 transitions, 1349 flow [2024-06-03 19:20:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:20:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:20:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-03 19:20:44,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-03 19:20:44,677 INFO L175 Difference]: Start difference. First operand has 200 places, 128 transitions, 1007 flow. Second operand 12 states and 136 transitions. [2024-06-03 19:20:44,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 144 transitions, 1349 flow [2024-06-03 19:20:44,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 144 transitions, 1253 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:20:44,743 INFO L231 Difference]: Finished difference. Result has 202 places, 126 transitions, 937 flow [2024-06-03 19:20:44,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=937, PETRI_PLACES=202, PETRI_TRANSITIONS=126} [2024-06-03 19:20:44,743 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-03 19:20:44,743 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 126 transitions, 937 flow [2024-06-03 19:20:44,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:44,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:44,744 INFO 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 19:20:44,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 19:20:44,744 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 19:20:44,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:44,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1658255232, now seen corresponding path program 10 times [2024-06-03 19:20:44,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:44,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425546167] [2024-06-03 19:20:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:44,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:46,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:46,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425546167] [2024-06-03 19:20:46,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425546167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:46,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:46,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:46,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316717269] [2024-06-03 19:20:46,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:46,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:46,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:46,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:46,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:46,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:46,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 126 transitions, 937 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:46,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:46,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:46,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:46,989 INFO L124 PetriNetUnfolderBase]: 296/641 cut-off events. [2024-06-03 19:20:46,989 INFO L125 PetriNetUnfolderBase]: For 40927/40927 co-relation queries the response was YES. [2024-06-03 19:20:46,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3351 conditions, 641 events. 296/641 cut-off events. For 40927/40927 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3370 event pairs, 76 based on Foata normal form. 8/649 useless extension candidates. Maximal degree in co-relation 3269. Up to 470 conditions per place. [2024-06-03 19:20:46,994 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 93 selfloop transitions, 29 changer transitions 13/138 dead transitions. [2024-06-03 19:20:46,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 138 transitions, 1263 flow [2024-06-03 19:20:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:20:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:20:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:20:47,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-03 19:20:47,007 INFO L175 Difference]: Start difference. First operand has 202 places, 126 transitions, 937 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:20:47,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 138 transitions, 1263 flow [2024-06-03 19:20:47,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 138 transitions, 1192 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-03 19:20:47,074 INFO L231 Difference]: Finished difference. Result has 197 places, 120 transitions, 898 flow [2024-06-03 19:20:47,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=898, PETRI_PLACES=197, PETRI_TRANSITIONS=120} [2024-06-03 19:20:47,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-03 19:20:47,075 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 120 transitions, 898 flow [2024-06-03 19:20:47,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:47,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:47,075 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 19:20:47,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 19:20:47,076 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 19:20:47,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1027561480, now seen corresponding path program 11 times [2024-06-03 19:20:47,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:47,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246149298] [2024-06-03 19:20:47,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:47,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:20:48,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:48,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246149298] [2024-06-03 19:20:48,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246149298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:48,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:48,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:48,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742025376] [2024-06-03 19:20:48,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:48,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:48,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:48,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:48,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:48,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:48,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 120 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:48,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:48,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:48,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:49,101 INFO L124 PetriNetUnfolderBase]: 302/658 cut-off events. [2024-06-03 19:20:49,101 INFO L125 PetriNetUnfolderBase]: For 46530/46530 co-relation queries the response was YES. [2024-06-03 19:20:49,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3792 conditions, 658 events. 302/658 cut-off events. For 46530/46530 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3476 event pairs, 113 based on Foata normal form. 6/664 useless extension candidates. Maximal degree in co-relation 3713. Up to 513 conditions per place. [2024-06-03 19:20:49,107 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 15 changer transitions 7/138 dead transitions. [2024-06-03 19:20:49,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 138 transitions, 1364 flow [2024-06-03 19:20:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:20:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:20:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-03 19:20:49,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-03 19:20:49,108 INFO L175 Difference]: Start difference. First operand has 197 places, 120 transitions, 898 flow. Second operand 11 states and 130 transitions. [2024-06-03 19:20:49,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 138 transitions, 1364 flow [2024-06-03 19:20:49,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 138 transitions, 1290 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 19:20:49,191 INFO L231 Difference]: Finished difference. Result has 191 places, 117 transitions, 845 flow [2024-06-03 19:20:49,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=845, PETRI_PLACES=191, PETRI_TRANSITIONS=117} [2024-06-03 19:20:49,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-03 19:20:49,192 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 117 transitions, 845 flow [2024-06-03 19:20:49,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:49,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:49,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:20:49,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 19:20:49,192 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 19:20:49,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:49,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1664741982, now seen corresponding path program 12 times [2024-06-03 19:20:49,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:49,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655554388] [2024-06-03 19:20:49,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:50,516 INFO 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 19:20:50,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:50,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655554388] [2024-06-03 19:20:50,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655554388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:50,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:50,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:50,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883961294] [2024-06-03 19:20:50,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:50,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:50,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:50,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:50,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:50,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:50,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 117 transitions, 845 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:50,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:50,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:50,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:50,947 INFO L124 PetriNetUnfolderBase]: 299/654 cut-off events. [2024-06-03 19:20:50,948 INFO L125 PetriNetUnfolderBase]: For 44543/44543 co-relation queries the response was YES. [2024-06-03 19:20:50,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 654 events. 299/654 cut-off events. For 44543/44543 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3471 event pairs, 88 based on Foata normal form. 8/662 useless extension candidates. Maximal degree in co-relation 3593. Up to 499 conditions per place. [2024-06-03 19:20:50,952 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 27 changer transitions 9/129 dead transitions. [2024-06-03 19:20:50,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 129 transitions, 1151 flow [2024-06-03 19:20:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:20:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:20:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 19:20:50,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-03 19:20:50,954 INFO L175 Difference]: Start difference. First operand has 191 places, 117 transitions, 845 flow. Second operand 11 states and 127 transitions. [2024-06-03 19:20:50,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 129 transitions, 1151 flow [2024-06-03 19:20:51,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 129 transitions, 1114 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-03 19:20:51,028 INFO L231 Difference]: Finished difference. Result has 187 places, 114 transitions, 846 flow [2024-06-03 19:20:51,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=846, PETRI_PLACES=187, PETRI_TRANSITIONS=114} [2024-06-03 19:20:51,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-03 19:20:51,029 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 114 transitions, 846 flow [2024-06-03 19:20:51,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:51,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:51,029 INFO 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 19:20:51,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 19:20:51,029 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 19:20:51,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash -785581922, now seen corresponding path program 13 times [2024-06-03 19:20:51,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:51,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669548017] [2024-06-03 19:20:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:51,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:52,207 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 19:20:52,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:52,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669548017] [2024-06-03 19:20:52,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669548017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:52,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:52,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:20:52,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150146157] [2024-06-03 19:20:52,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:52,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:20:52,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:20:52,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:20:52,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:52,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 114 transitions, 846 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:52,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:52,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:52,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:52,620 INFO L124 PetriNetUnfolderBase]: 312/687 cut-off events. [2024-06-03 19:20:52,620 INFO L125 PetriNetUnfolderBase]: For 46932/46932 co-relation queries the response was YES. [2024-06-03 19:20:52,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4144 conditions, 687 events. 312/687 cut-off events. For 46932/46932 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3704 event pairs, 104 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 4070. Up to 457 conditions per place. [2024-06-03 19:20:52,625 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 21 changer transitions 7/131 dead transitions. [2024-06-03 19:20:52,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 131 transitions, 1286 flow [2024-06-03 19:20:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:20:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:20:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-03 19:20:52,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:20:52,626 INFO L175 Difference]: Start difference. First operand has 187 places, 114 transitions, 846 flow. Second operand 10 states and 124 transitions. [2024-06-03 19:20:52,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 131 transitions, 1286 flow [2024-06-03 19:20:52,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 131 transitions, 1220 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:20:52,712 INFO L231 Difference]: Finished difference. Result has 184 places, 111 transitions, 810 flow [2024-06-03 19:20:52,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=810, PETRI_PLACES=184, PETRI_TRANSITIONS=111} [2024-06-03 19:20:52,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-03 19:20:52,713 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 111 transitions, 810 flow [2024-06-03 19:20:52,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:52,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:52,713 INFO 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 19:20:52,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 19:20:52,714 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 19:20:52,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:52,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1664511342, now seen corresponding path program 14 times [2024-06-03 19:20:52,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:52,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970077509] [2024-06-03 19:20:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:52,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:54,323 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 19:20:54,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:54,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970077509] [2024-06-03 19:20:54,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970077509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:54,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:54,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:54,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785096386] [2024-06-03 19:20:54,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:54,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:54,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:54,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:54,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:54,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:54,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 111 transitions, 810 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:54,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:54,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:54,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:54,879 INFO L124 PetriNetUnfolderBase]: 302/665 cut-off events. [2024-06-03 19:20:54,879 INFO L125 PetriNetUnfolderBase]: For 47843/47843 co-relation queries the response was YES. [2024-06-03 19:20:54,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 665 events. 302/665 cut-off events. For 47843/47843 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3549 event pairs, 107 based on Foata normal form. 8/673 useless extension candidates. Maximal degree in co-relation 3852. Up to 537 conditions per place. [2024-06-03 19:20:54,884 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 21 changer transitions 7/125 dead transitions. [2024-06-03 19:20:54,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 125 transitions, 1114 flow [2024-06-03 19:20:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:20:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:20:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:20:54,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-03 19:20:54,885 INFO L175 Difference]: Start difference. First operand has 184 places, 111 transitions, 810 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:20:54,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 125 transitions, 1114 flow [2024-06-03 19:20:54,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 125 transitions, 1070 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 19:20:54,966 INFO L231 Difference]: Finished difference. Result has 182 places, 108 transitions, 795 flow [2024-06-03 19:20:54,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=795, PETRI_PLACES=182, PETRI_TRANSITIONS=108} [2024-06-03 19:20:54,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-03 19:20:54,967 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 108 transitions, 795 flow [2024-06-03 19:20:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:54,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:54,967 INFO 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 19:20:54,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 19:20:54,967 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 19:20:54,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:54,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1454566660, now seen corresponding path program 15 times [2024-06-03 19:20:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605599777] [2024-06-03 19:20:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:56,776 INFO 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 19:20:56,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:56,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605599777] [2024-06-03 19:20:56,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605599777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:56,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:56,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:56,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642859274] [2024-06-03 19:20:56,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:56,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:56,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:56,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:56,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:56,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:56,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 108 transitions, 795 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:56,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:56,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:56,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:57,344 INFO L124 PetriNetUnfolderBase]: 275/611 cut-off events. [2024-06-03 19:20:57,345 INFO L125 PetriNetUnfolderBase]: For 36801/36801 co-relation queries the response was YES. [2024-06-03 19:20:57,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 611 events. 275/611 cut-off events. For 36801/36801 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3183 event pairs, 120 based on Foata normal form. 8/619 useless extension candidates. Maximal degree in co-relation 3241. Up to 510 conditions per place. [2024-06-03 19:20:57,348 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 98 selfloop transitions, 14 changer transitions 7/122 dead transitions. [2024-06-03 19:20:57,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 122 transitions, 1093 flow [2024-06-03 19:20:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:20:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:20:57,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-03 19:20:57,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-03 19:20:57,350 INFO L175 Difference]: Start difference. First operand has 182 places, 108 transitions, 795 flow. Second operand 11 states and 127 transitions. [2024-06-03 19:20:57,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 122 transitions, 1093 flow [2024-06-03 19:20:57,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 122 transitions, 1045 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:20:57,415 INFO L231 Difference]: Finished difference. Result has 180 places, 105 transitions, 762 flow [2024-06-03 19:20:57,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=762, PETRI_PLACES=180, PETRI_TRANSITIONS=105} [2024-06-03 19:20:57,415 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-03 19:20:57,415 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 105 transitions, 762 flow [2024-06-03 19:20:57,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:57,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:57,416 INFO 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 19:20:57,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-03 19:20:57,416 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 19:20:57,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1291223824, now seen corresponding path program 16 times [2024-06-03 19:20:57,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:57,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485500287] [2024-06-03 19:20:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:57,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:20:58,765 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 19:20:58,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:20:58,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485500287] [2024-06-03 19:20:58,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485500287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:20:58,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:20:58,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:20:58,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882764085] [2024-06-03 19:20:58,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:20:58,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:20:58,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:20:58,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:20:58,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:20:58,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:20:58,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 105 transitions, 762 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:58,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:20:58,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:20:58,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:20:59,258 INFO L124 PetriNetUnfolderBase]: 266/596 cut-off events. [2024-06-03 19:20:59,258 INFO L125 PetriNetUnfolderBase]: For 33173/33173 co-relation queries the response was YES. [2024-06-03 19:20:59,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 596 events. 266/596 cut-off events. For 33173/33173 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3081 event pairs, 112 based on Foata normal form. 6/602 useless extension candidates. Maximal degree in co-relation 3138. Up to 498 conditions per place. [2024-06-03 19:20:59,261 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 11 changer transitions 13/121 dead transitions. [2024-06-03 19:20:59,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 121 transitions, 1054 flow [2024-06-03 19:20:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:20:59,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:20:59,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-03 19:20:59,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-03 19:20:59,262 INFO L175 Difference]: Start difference. First operand has 180 places, 105 transitions, 762 flow. Second operand 12 states and 133 transitions. [2024-06-03 19:20:59,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 121 transitions, 1054 flow [2024-06-03 19:20:59,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 121 transitions, 1020 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:20:59,331 INFO L231 Difference]: Finished difference. Result has 178 places, 101 transitions, 732 flow [2024-06-03 19:20:59,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=732, PETRI_PLACES=178, PETRI_TRANSITIONS=101} [2024-06-03 19:20:59,332 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-03 19:20:59,332 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 101 transitions, 732 flow [2024-06-03 19:20:59,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:20:59,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:20:59,332 INFO 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 19:20:59,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-03 19:20:59,332 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 19:20:59,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:20:59,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1627928286, now seen corresponding path program 17 times [2024-06-03 19:20:59,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:20:59,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277535790] [2024-06-03 19:20:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:20:59,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:20:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:02,311 INFO 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 19:21:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:02,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277535790] [2024-06-03 19:21:02,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277535790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:02,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:02,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:02,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405385436] [2024-06-03 19:21:02,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:02,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:02,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:02,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:02,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:02,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:02,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 101 transitions, 732 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:02,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:02,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:02,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:02,923 INFO L124 PetriNetUnfolderBase]: 259/582 cut-off events. [2024-06-03 19:21:02,923 INFO L125 PetriNetUnfolderBase]: For 34390/34390 co-relation queries the response was YES. [2024-06-03 19:21:02,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3138 conditions, 582 events. 259/582 cut-off events. For 34390/34390 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3003 event pairs, 95 based on Foata normal form. 8/590 useless extension candidates. Maximal degree in co-relation 3069. Up to 405 conditions per place. [2024-06-03 19:21:02,926 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 33 changer transitions 7/115 dead transitions. [2024-06-03 19:21:02,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 115 transitions, 1016 flow [2024-06-03 19:21:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:02,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:02,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-03 19:21:02,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:21:02,927 INFO L175 Difference]: Start difference. First operand has 178 places, 101 transitions, 732 flow. Second operand 11 states and 132 transitions. [2024-06-03 19:21:02,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 115 transitions, 1016 flow [2024-06-03 19:21:02,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 115 transitions, 988 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:21:02,985 INFO L231 Difference]: Finished difference. Result has 172 places, 98 transitions, 758 flow [2024-06-03 19:21:02,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=758, PETRI_PLACES=172, PETRI_TRANSITIONS=98} [2024-06-03 19:21:02,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-03 19:21:02,985 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 98 transitions, 758 flow [2024-06-03 19:21:02,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:02,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:02,986 INFO 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 19:21:02,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-03 19:21:02,986 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 19:21:02,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:02,986 INFO L85 PathProgramCache]: Analyzing trace with hash -815908868, now seen corresponding path program 18 times [2024-06-03 19:21:02,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:02,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118258530] [2024-06-03 19:21:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:02,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:21:04,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:04,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118258530] [2024-06-03 19:21:04,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118258530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:04,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:04,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:21:04,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224378498] [2024-06-03 19:21:04,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:04,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:21:04,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:04,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:21:04,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:21:04,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:04,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 98 transitions, 758 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:04,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:04,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:04,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:04,480 INFO L124 PetriNetUnfolderBase]: 265/602 cut-off events. [2024-06-03 19:21:04,481 INFO L125 PetriNetUnfolderBase]: For 34477/34477 co-relation queries the response was YES. [2024-06-03 19:21:04,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 602 events. 265/602 cut-off events. For 34477/34477 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3154 event pairs, 102 based on Foata normal form. 6/608 useless extension candidates. Maximal degree in co-relation 3360. Up to 358 conditions per place. [2024-06-03 19:21:04,484 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 30 changer transitions 7/114 dead transitions. [2024-06-03 19:21:04,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 114 transitions, 1130 flow [2024-06-03 19:21:04,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:21:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:21:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-03 19:21:04,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-03 19:21:04,485 INFO L175 Difference]: Start difference. First operand has 172 places, 98 transitions, 758 flow. Second operand 10 states and 125 transitions. [2024-06-03 19:21:04,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 114 transitions, 1130 flow [2024-06-03 19:21:04,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 114 transitions, 1046 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-03 19:21:04,541 INFO L231 Difference]: Finished difference. Result has 169 places, 95 transitions, 730 flow [2024-06-03 19:21:04,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=730, PETRI_PLACES=169, PETRI_TRANSITIONS=95} [2024-06-03 19:21:04,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-03 19:21:04,542 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 95 transitions, 730 flow [2024-06-03 19:21:04,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:04,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:04,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:21:04,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-03 19:21:04,542 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 19:21:04,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash -816147878, now seen corresponding path program 19 times [2024-06-03 19:21:04,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:04,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245746513] [2024-06-03 19:21:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:04,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:21:05,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:05,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245746513] [2024-06-03 19:21:05,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245746513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:05,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:05,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128685895] [2024-06-03 19:21:05,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:05,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:05,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:05,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:06,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:06,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 95 transitions, 730 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:06,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:06,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:06,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:06,336 INFO L124 PetriNetUnfolderBase]: 255/580 cut-off events. [2024-06-03 19:21:06,337 INFO L125 PetriNetUnfolderBase]: For 33557/33557 co-relation queries the response was YES. [2024-06-03 19:21:06,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3160 conditions, 580 events. 255/580 cut-off events. For 33557/33557 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2983 event pairs, 105 based on Foata normal form. 8/588 useless extension candidates. Maximal degree in co-relation 3094. Up to 411 conditions per place. [2024-06-03 19:21:06,340 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 29 changer transitions 9/108 dead transitions. [2024-06-03 19:21:06,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 108 transitions, 974 flow [2024-06-03 19:21:06,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:06,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-03 19:21:06,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-03 19:21:06,341 INFO L175 Difference]: Start difference. First operand has 169 places, 95 transitions, 730 flow. Second operand 11 states and 129 transitions. [2024-06-03 19:21:06,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 108 transitions, 974 flow [2024-06-03 19:21:06,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 108 transitions, 899 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:21:06,392 INFO L231 Difference]: Finished difference. Result has 167 places, 91 transitions, 682 flow [2024-06-03 19:21:06,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=682, PETRI_PLACES=167, PETRI_TRANSITIONS=91} [2024-06-03 19:21:06,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-03 19:21:06,392 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 91 transitions, 682 flow [2024-06-03 19:21:06,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:06,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:06,393 INFO L208 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 19:21:06,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-03 19:21:06,393 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 19:21:06,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash 177958768, now seen corresponding path program 1 times [2024-06-03 19:21:06,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:06,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133675283] [2024-06-03 19:21:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:06,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:21:07,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:07,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133675283] [2024-06-03 19:21:07,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133675283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:07,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:07,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:07,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67005229] [2024-06-03 19:21:07,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:07,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:07,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:07,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:07,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:08,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:08,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 91 transitions, 682 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:08,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:08,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:08,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:08,378 INFO L124 PetriNetUnfolderBase]: 246/565 cut-off events. [2024-06-03 19:21:08,379 INFO L125 PetriNetUnfolderBase]: For 30055/30055 co-relation queries the response was YES. [2024-06-03 19:21:08,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 565 events. 246/565 cut-off events. For 30055/30055 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2876 event pairs, 81 based on Foata normal form. 6/571 useless extension candidates. Maximal degree in co-relation 2976. Up to 450 conditions per place. [2024-06-03 19:21:08,381 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 76 selfloop transitions, 11 changer transitions 21/111 dead transitions. [2024-06-03 19:21:08,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 111 transitions, 950 flow [2024-06-03 19:21:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:21:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:21:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-03 19:21:08,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-03 19:21:08,405 INFO L175 Difference]: Start difference. First operand has 167 places, 91 transitions, 682 flow. Second operand 12 states and 135 transitions. [2024-06-03 19:21:08,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 111 transitions, 950 flow [2024-06-03 19:21:08,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 111 transitions, 865 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-03 19:21:08,449 INFO L231 Difference]: Finished difference. Result has 165 places, 84 transitions, 581 flow [2024-06-03 19:21:08,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=581, PETRI_PLACES=165, PETRI_TRANSITIONS=84} [2024-06-03 19:21:08,450 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-03 19:21:08,450 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 84 transitions, 581 flow [2024-06-03 19:21:08,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:08,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:08,450 INFO L208 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 19:21:08,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-03 19:21:08,450 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 19:21:08,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1573013936, now seen corresponding path program 2 times [2024-06-03 19:21:08,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:08,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451502437] [2024-06-03 19:21:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:08,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:21:10,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451502437] [2024-06-03 19:21:10,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451502437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:10,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:10,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049064219] [2024-06-03 19:21:10,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:10,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:10,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 84 transitions, 581 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:10,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:10,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:10,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:10,817 INFO L124 PetriNetUnfolderBase]: 230/527 cut-off events. [2024-06-03 19:21:10,817 INFO L125 PetriNetUnfolderBase]: For 28903/28903 co-relation queries the response was YES. [2024-06-03 19:21:10,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2758 conditions, 527 events. 230/527 cut-off events. For 28903/28903 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2618 event pairs, 77 based on Foata normal form. 6/533 useless extension candidates. Maximal degree in co-relation 2695. Up to 421 conditions per place. [2024-06-03 19:21:10,820 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 9 changer transitions 19/103 dead transitions. [2024-06-03 19:21:10,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 103 transitions, 827 flow [2024-06-03 19:21:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:21:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:21:10,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-03 19:21:10,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-03 19:21:10,821 INFO L175 Difference]: Start difference. First operand has 165 places, 84 transitions, 581 flow. Second operand 12 states and 134 transitions. [2024-06-03 19:21:10,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 103 transitions, 827 flow [2024-06-03 19:21:10,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 103 transitions, 785 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-03 19:21:10,862 INFO L231 Difference]: Finished difference. Result has 154 places, 78 transitions, 522 flow [2024-06-03 19:21:10,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=154, PETRI_TRANSITIONS=78} [2024-06-03 19:21:10,875 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-03 19:21:10,876 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 78 transitions, 522 flow [2024-06-03 19:21:10,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:10,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:10,876 INFO L208 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 19:21:10,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-03 19:21:10,876 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 19:21:10,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1107912404, now seen corresponding path program 3 times [2024-06-03 19:21:10,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:10,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023160145] [2024-06-03 19:21:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:10,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:12,555 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 19:21:12,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:12,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023160145] [2024-06-03 19:21:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023160145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:12,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:12,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:12,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415059418] [2024-06-03 19:21:12,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:12,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:12,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:12,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:12,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:12,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 78 transitions, 522 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:12,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:12,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:12,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:13,112 INFO L124 PetriNetUnfolderBase]: 213/490 cut-off events. [2024-06-03 19:21:13,112 INFO L125 PetriNetUnfolderBase]: For 27443/27443 co-relation queries the response was YES. [2024-06-03 19:21:13,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 490 events. 213/490 cut-off events. For 27443/27443 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2383 event pairs, 77 based on Foata normal form. 6/496 useless extension candidates. Maximal degree in co-relation 2523. Up to 396 conditions per place. [2024-06-03 19:21:13,115 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 11 changer transitions 12/94 dead transitions. [2024-06-03 19:21:13,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 94 transitions, 742 flow [2024-06-03 19:21:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:21:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:21:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-03 19:21:13,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 19:21:13,116 INFO L175 Difference]: Start difference. First operand has 154 places, 78 transitions, 522 flow. Second operand 12 states and 132 transitions. [2024-06-03 19:21:13,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 94 transitions, 742 flow [2024-06-03 19:21:13,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 94 transitions, 716 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 19:21:13,152 INFO L231 Difference]: Finished difference. Result has 146 places, 74 transitions, 486 flow [2024-06-03 19:21:13,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=486, PETRI_PLACES=146, PETRI_TRANSITIONS=74} [2024-06-03 19:21:13,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-03 19:21:13,153 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 74 transitions, 486 flow [2024-06-03 19:21:13,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:13,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:13,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:21:13,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-03 19:21:13,153 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 19:21:13,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1307358344, now seen corresponding path program 4 times [2024-06-03 19:21:13,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:13,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863266390] [2024-06-03 19:21:13,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:13,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:15,193 INFO 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 19:21:15,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:15,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863266390] [2024-06-03 19:21:15,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863266390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:15,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:15,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385445503] [2024-06-03 19:21:15,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:15,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:15,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:15,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 74 transitions, 486 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:15,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:15,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:15,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:15,640 INFO L124 PetriNetUnfolderBase]: 205/472 cut-off events. [2024-06-03 19:21:15,640 INFO L125 PetriNetUnfolderBase]: For 26041/26041 co-relation queries the response was YES. [2024-06-03 19:21:15,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 472 events. 205/472 cut-off events. For 26041/26041 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2271 event pairs, 75 based on Foata normal form. 6/478 useless extension candidates. Maximal degree in co-relation 2421. Up to 378 conditions per place. [2024-06-03 19:21:15,642 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 6 changer transitions 22/91 dead transitions. [2024-06-03 19:21:15,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 91 transitions, 702 flow [2024-06-03 19:21:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:21:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:21:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-03 19:21:15,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-03 19:21:15,643 INFO L175 Difference]: Start difference. First operand has 146 places, 74 transitions, 486 flow. Second operand 12 states and 131 transitions. [2024-06-03 19:21:15,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 91 transitions, 702 flow [2024-06-03 19:21:15,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 91 transitions, 667 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:21:15,675 INFO L231 Difference]: Finished difference. Result has 141 places, 66 transitions, 401 flow [2024-06-03 19:21:15,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=401, PETRI_PLACES=141, PETRI_TRANSITIONS=66} [2024-06-03 19:21:15,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-03 19:21:15,676 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 66 transitions, 401 flow [2024-06-03 19:21:15,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:15,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:15,676 INFO L208 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 19:21:15,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-03 19:21:15,677 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 19:21:15,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:15,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1471331308, now seen corresponding path program 5 times [2024-06-03 19:21:15,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:15,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374991194] [2024-06-03 19:21:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:15,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:21:17,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:17,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374991194] [2024-06-03 19:21:17,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374991194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:17,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:17,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:17,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496642366] [2024-06-03 19:21:17,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:17,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:17,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:17,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:17,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 66 transitions, 401 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:17,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:17,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:17,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:17,824 INFO L124 PetriNetUnfolderBase]: 191/436 cut-off events. [2024-06-03 19:21:17,825 INFO L125 PetriNetUnfolderBase]: For 25923/25923 co-relation queries the response was YES. [2024-06-03 19:21:17,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 436 events. 191/436 cut-off events. For 25923/25923 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2055 event pairs, 71 based on Foata normal form. 6/442 useless extension candidates. Maximal degree in co-relation 2269. Up to 349 conditions per place. [2024-06-03 19:21:17,827 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 55 selfloop transitions, 5 changer transitions 19/82 dead transitions. [2024-06-03 19:21:17,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 82 transitions, 597 flow [2024-06-03 19:21:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-03 19:21:17,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 19:21:17,828 INFO L175 Difference]: Start difference. First operand has 141 places, 66 transitions, 401 flow. Second operand 11 states and 121 transitions. [2024-06-03 19:21:17,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 82 transitions, 597 flow [2024-06-03 19:21:17,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 82 transitions, 559 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-03 19:21:17,857 INFO L231 Difference]: Finished difference. Result has 125 places, 60 transitions, 349 flow [2024-06-03 19:21:17,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=349, PETRI_PLACES=125, PETRI_TRANSITIONS=60} [2024-06-03 19:21:17,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-03 19:21:17,858 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 60 transitions, 349 flow [2024-06-03 19:21:17,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:17,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:17,858 INFO L208 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 19:21:17,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-03 19:21:17,858 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 19:21:17,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:17,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1041815120, now seen corresponding path program 6 times [2024-06-03 19:21:17,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:17,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236967749] [2024-06-03 19:21:17,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:17,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:21:19,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:19,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236967749] [2024-06-03 19:21:19,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236967749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:19,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:19,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:19,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325768297] [2024-06-03 19:21:19,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:19,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:19,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:19,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:19,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:19,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:19,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 60 transitions, 349 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:19,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:19,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:19,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:19,660 INFO L124 PetriNetUnfolderBase]: 159/366 cut-off events. [2024-06-03 19:21:19,660 INFO L125 PetriNetUnfolderBase]: For 21571/21571 co-relation queries the response was YES. [2024-06-03 19:21:19,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 366 events. 159/366 cut-off events. For 21571/21571 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1632 event pairs, 58 based on Foata normal form. 6/372 useless extension candidates. Maximal degree in co-relation 1844. Up to 291 conditions per place. [2024-06-03 19:21:19,662 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 7 changer transitions 12/73 dead transitions. [2024-06-03 19:21:19,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 73 transitions, 519 flow [2024-06-03 19:21:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 19:21:19,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-03 19:21:19,663 INFO L175 Difference]: Start difference. First operand has 125 places, 60 transitions, 349 flow. Second operand 11 states and 119 transitions. [2024-06-03 19:21:19,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 73 transitions, 519 flow [2024-06-03 19:21:19,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 73 transitions, 499 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:21:19,680 INFO L231 Difference]: Finished difference. Result has 116 places, 56 transitions, 325 flow [2024-06-03 19:21:19,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=325, PETRI_PLACES=116, PETRI_TRANSITIONS=56} [2024-06-03 19:21:19,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-03 19:21:19,680 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 56 transitions, 325 flow [2024-06-03 19:21:19,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:19,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:19,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:21:19,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-03 19:21:19,681 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 19:21:19,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:19,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1650205078, now seen corresponding path program 7 times [2024-06-03 19:21:19,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:19,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234166261] [2024-06-03 19:21:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:21,157 INFO 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 19:21:21,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:21,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234166261] [2024-06-03 19:21:21,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234166261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:21,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:21,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:21,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124473739] [2024-06-03 19:21:21,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:21,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:21,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:21,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:21,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:21,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:21,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 56 transitions, 325 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:21,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:21,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:21,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:21,475 INFO L124 PetriNetUnfolderBase]: 151/348 cut-off events. [2024-06-03 19:21:21,475 INFO L125 PetriNetUnfolderBase]: For 17269/17269 co-relation queries the response was YES. [2024-06-03 19:21:21,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 348 events. 151/348 cut-off events. For 17269/17269 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1524 event pairs, 56 based on Foata normal form. 6/354 useless extension candidates. Maximal degree in co-relation 1702. Up to 273 conditions per place. [2024-06-03 19:21:21,477 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 3 changer transitions 20/70 dead transitions. [2024-06-03 19:21:21,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 70 transitions, 491 flow [2024-06-03 19:21:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 19:21:21,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-03 19:21:21,481 INFO L175 Difference]: Start difference. First operand has 116 places, 56 transitions, 325 flow. Second operand 11 states and 118 transitions. [2024-06-03 19:21:21,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 70 transitions, 491 flow [2024-06-03 19:21:21,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 70 transitions, 469 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:21:21,494 INFO L231 Difference]: Finished difference. Result has 109 places, 49 transitions, 277 flow [2024-06-03 19:21:21,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=277, PETRI_PLACES=109, PETRI_TRANSITIONS=49} [2024-06-03 19:21:21,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-03 19:21:21,494 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 49 transitions, 277 flow [2024-06-03 19:21:21,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:21,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:21,494 INFO L208 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 19:21:21,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-03 19:21:21,495 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 19:21:21,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1628818254, now seen corresponding path program 8 times [2024-06-03 19:21:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:21,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194216627] [2024-06-03 19:21:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:23,318 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 19:21:23,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:23,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194216627] [2024-06-03 19:21:23,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194216627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:23,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:23,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094377794] [2024-06-03 19:21:23,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:23,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:23,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:23,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 49 transitions, 277 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:23,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:23,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:23,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:23,719 INFO L124 PetriNetUnfolderBase]: 121/281 cut-off events. [2024-06-03 19:21:23,719 INFO L125 PetriNetUnfolderBase]: For 11474/11474 co-relation queries the response was YES. [2024-06-03 19:21:23,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 281 events. 121/281 cut-off events. For 11474/11474 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1149 event pairs, 43 based on Foata normal form. 6/287 useless extension candidates. Maximal degree in co-relation 1269. Up to 215 conditions per place. [2024-06-03 19:21:23,720 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 38 selfloop transitions, 6 changer transitions 14/61 dead transitions. [2024-06-03 19:21:23,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 61 transitions, 419 flow [2024-06-03 19:21:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 19:21:23,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-03 19:21:23,722 INFO L175 Difference]: Start difference. First operand has 109 places, 49 transitions, 277 flow. Second operand 11 states and 116 transitions. [2024-06-03 19:21:23,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 61 transitions, 419 flow [2024-06-03 19:21:23,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 61 transitions, 397 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-03 19:21:23,729 INFO L231 Difference]: Finished difference. Result has 96 places, 44 transitions, 240 flow [2024-06-03 19:21:23,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=240, PETRI_PLACES=96, PETRI_TRANSITIONS=44} [2024-06-03 19:21:23,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-03 19:21:23,730 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 44 transitions, 240 flow [2024-06-03 19:21:23,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:23,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:23,730 INFO L208 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 19:21:23,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-03 19:21:23,731 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 19:21:23,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash 60029834, now seen corresponding path program 9 times [2024-06-03 19:21:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:23,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779935645] [2024-06-03 19:21:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:25,422 INFO 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 19:21:25,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:25,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779935645] [2024-06-03 19:21:25,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779935645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:25,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:25,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209936290] [2024-06-03 19:21:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:25,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:25,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:25,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:25,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:25,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 44 transitions, 240 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:25,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:25,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:25,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:25,839 INFO L124 PetriNetUnfolderBase]: 97/227 cut-off events. [2024-06-03 19:21:25,839 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-06-03 19:21:25,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 227 events. 97/227 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 843 event pairs, 30 based on Foata normal form. 6/233 useless extension candidates. Maximal degree in co-relation 880. Up to 160 conditions per place. [2024-06-03 19:21:25,840 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 34 selfloop transitions, 7 changer transitions 12/56 dead transitions. [2024-06-03 19:21:25,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 56 transitions, 372 flow [2024-06-03 19:21:25,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 19:21:25,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-03 19:21:25,841 INFO L175 Difference]: Start difference. First operand has 96 places, 44 transitions, 240 flow. Second operand 11 states and 117 transitions. [2024-06-03 19:21:25,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 56 transitions, 372 flow [2024-06-03 19:21:25,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 56 transitions, 346 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:21:25,846 INFO L231 Difference]: Finished difference. Result has 88 places, 40 transitions, 211 flow [2024-06-03 19:21:25,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=211, PETRI_PLACES=88, PETRI_TRANSITIONS=40} [2024-06-03 19:21:25,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-03 19:21:25,846 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 40 transitions, 211 flow [2024-06-03 19:21:25,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:25,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:25,847 INFO L208 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 19:21:25,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-03 19:21:25,847 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 19:21:25,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1209694728, now seen corresponding path program 10 times [2024-06-03 19:21:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960713933] [2024-06-03 19:21:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:25,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:27,419 INFO 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 19:21:27,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:27,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960713933] [2024-06-03 19:21:27,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960713933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:27,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:27,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:27,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292266751] [2024-06-03 19:21:27,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:27,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:27,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:27,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:27,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:27,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:27,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 40 transitions, 211 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:27,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:27,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:27,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:27,690 INFO L124 PetriNetUnfolderBase]: 89/209 cut-off events. [2024-06-03 19:21:27,690 INFO L125 PetriNetUnfolderBase]: For 5160/5160 co-relation queries the response was YES. [2024-06-03 19:21:27,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 209 events. 89/209 cut-off events. For 5160/5160 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 741 event pairs, 28 based on Foata normal form. 6/215 useless extension candidates. Maximal degree in co-relation 812. Up to 142 conditions per place. [2024-06-03 19:21:27,691 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 29 selfloop transitions, 4 changer transitions 17/53 dead transitions. [2024-06-03 19:21:27,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 53 transitions, 339 flow [2024-06-03 19:21:27,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 19:21:27,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-03 19:21:27,692 INFO L175 Difference]: Start difference. First operand has 88 places, 40 transitions, 211 flow. Second operand 11 states and 116 transitions. [2024-06-03 19:21:27,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 53 transitions, 339 flow [2024-06-03 19:21:27,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 53 transitions, 317 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:21:27,697 INFO L231 Difference]: Finished difference. Result has 81 places, 34 transitions, 172 flow [2024-06-03 19:21:27,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=172, PETRI_PLACES=81, PETRI_TRANSITIONS=34} [2024-06-03 19:21:27,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-03 19:21:27,697 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 34 transitions, 172 flow [2024-06-03 19:21:27,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:27,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:27,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:21:27,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-03 19:21:27,698 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 19:21:27,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:27,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2142107716, now seen corresponding path program 11 times [2024-06-03 19:21:27,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:27,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383926303] [2024-06-03 19:21:27,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:27,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:21:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:29,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383926303] [2024-06-03 19:21:29,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383926303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:29,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:29,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:29,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457552779] [2024-06-03 19:21:29,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:29,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:29,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:29,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:29,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:29,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:29,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 34 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:29,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:29,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:29,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:29,694 INFO L124 PetriNetUnfolderBase]: 76/180 cut-off events. [2024-06-03 19:21:29,694 INFO L125 PetriNetUnfolderBase]: For 3942/3946 co-relation queries the response was YES. [2024-06-03 19:21:29,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 180 events. 76/180 cut-off events. For 3942/3946 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 598 event pairs, 28 based on Foata normal form. 6/186 useless extension candidates. Maximal degree in co-relation 694. Up to 120 conditions per place. [2024-06-03 19:21:29,695 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 24 selfloop transitions, 5 changer transitions 14/46 dead transitions. [2024-06-03 19:21:29,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 46 transitions, 284 flow [2024-06-03 19:21:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:29,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-03 19:21:29,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-03 19:21:29,696 INFO L175 Difference]: Start difference. First operand has 81 places, 34 transitions, 172 flow. Second operand 11 states and 114 transitions. [2024-06-03 19:21:29,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 46 transitions, 284 flow [2024-06-03 19:21:29,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 46 transitions, 264 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 19:21:29,699 INFO L231 Difference]: Finished difference. Result has 71 places, 29 transitions, 143 flow [2024-06-03 19:21:29,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=143, PETRI_PLACES=71, PETRI_TRANSITIONS=29} [2024-06-03 19:21:29,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-03 19:21:29,699 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 29 transitions, 143 flow [2024-06-03 19:21:29,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:29,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:29,700 INFO L208 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 19:21:29,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-03 19:21:29,700 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 19:21:29,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:29,700 INFO L85 PathProgramCache]: Analyzing trace with hash 275065932, now seen corresponding path program 12 times [2024-06-03 19:21:29,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:29,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044362033] [2024-06-03 19:21:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:29,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:31,185 INFO 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 19:21:31,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:31,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044362033] [2024-06-03 19:21:31,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044362033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:31,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:31,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:31,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388504074] [2024-06-03 19:21:31,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:31,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:31,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:31,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:31,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:31,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:31,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 29 transitions, 143 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:31,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:31,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:31,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:31,572 INFO L124 PetriNetUnfolderBase]: 67/159 cut-off events. [2024-06-03 19:21:31,572 INFO L125 PetriNetUnfolderBase]: For 2284/2288 co-relation queries the response was YES. [2024-06-03 19:21:31,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 159 events. 67/159 cut-off events. For 2284/2288 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 490 event pairs, 28 based on Foata normal form. 10/169 useless extension candidates. Maximal degree in co-relation 582. Up to 95 conditions per place. [2024-06-03 19:21:31,573 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 19 selfloop transitions, 9 changer transitions 10/41 dead transitions. [2024-06-03 19:21:31,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 41 transitions, 245 flow [2024-06-03 19:21:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-03 19:21:31,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-03 19:21:31,574 INFO L175 Difference]: Start difference. First operand has 71 places, 29 transitions, 143 flow. Second operand 11 states and 113 transitions. [2024-06-03 19:21:31,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 41 transitions, 245 flow [2024-06-03 19:21:31,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 41 transitions, 227 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 19:21:31,575 INFO L231 Difference]: Finished difference. Result has 64 places, 26 transitions, 131 flow [2024-06-03 19:21:31,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=131, PETRI_PLACES=64, PETRI_TRANSITIONS=26} [2024-06-03 19:21:31,576 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-03 19:21:31,576 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 26 transitions, 131 flow [2024-06-03 19:21:31,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:31,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:31,576 INFO L208 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 19:21:31,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-03 19:21:31,576 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 19:21:31,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:31,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1079551432, now seen corresponding path program 13 times [2024-06-03 19:21:31,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:31,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723236158] [2024-06-03 19:21:31,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:31,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:21:33,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:33,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723236158] [2024-06-03 19:21:33,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723236158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:33,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:33,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947636218] [2024-06-03 19:21:33,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:33,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:33,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:33,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:33,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 26 transitions, 131 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:33,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:33,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:33,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:33,651 INFO L124 PetriNetUnfolderBase]: 45/113 cut-off events. [2024-06-03 19:21:33,651 INFO L125 PetriNetUnfolderBase]: For 1024/1024 co-relation queries the response was YES. [2024-06-03 19:21:33,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 113 events. 45/113 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 277 event pairs, 4 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 366. Up to 38 conditions per place. [2024-06-03 19:21:33,652 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 8 changer transitions 10/39 dead transitions. [2024-06-03 19:21:33,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 39 transitions, 231 flow [2024-06-03 19:21:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-03 19:21:33,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-03 19:21:33,653 INFO L175 Difference]: Start difference. First operand has 64 places, 26 transitions, 131 flow. Second operand 11 states and 112 transitions. [2024-06-03 19:21:33,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 39 transitions, 231 flow [2024-06-03 19:21:33,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 39 transitions, 207 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:21:33,654 INFO L231 Difference]: Finished difference. Result has 60 places, 22 transitions, 107 flow [2024-06-03 19:21:33,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=107, PETRI_PLACES=60, PETRI_TRANSITIONS=22} [2024-06-03 19:21:33,654 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-03 19:21:33,654 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 22 transitions, 107 flow [2024-06-03 19:21:33,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:33,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:21:33,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:21:33,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-03 19:21:33,655 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 19:21:33,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:21:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash -78319982, now seen corresponding path program 14 times [2024-06-03 19:21:33,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:21:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870930265] [2024-06-03 19:21:33,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:21:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:21:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:21:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:21:35,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:21:35,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870930265] [2024-06-03 19:21:35,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870930265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:21:35,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:21:35,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:21:35,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931329253] [2024-06-03 19:21:35,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:21:35,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:21:35,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:21:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:21:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:21:35,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:21:35,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 22 transitions, 107 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:35,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:21:35,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:21:35,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:21:35,279 INFO L124 PetriNetUnfolderBase]: 19/57 cut-off events. [2024-06-03 19:21:35,279 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-06-03 19:21:35,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 57 events. 19/57 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 6/63 useless extension candidates. Maximal degree in co-relation 156. Up to 24 conditions per place. [2024-06-03 19:21:35,280 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-03 19:21:35,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 29 transitions, 151 flow [2024-06-03 19:21:35,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:21:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:21:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-03 19:21:35,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-03 19:21:35,280 INFO L175 Difference]: Start difference. First operand has 60 places, 22 transitions, 107 flow. Second operand 11 states and 104 transitions. [2024-06-03 19:21:35,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 29 transitions, 151 flow [2024-06-03 19:21:35,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 29 transitions, 117 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-03 19:21:35,281 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-06-03 19:21:35,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2024-06-03 19:21:35,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-03 19:21:35,282 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-06-03 19:21:35,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:21:35,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 19:21:35,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 19:21:35,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 19:21:35,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 19:21:35,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-03 19:21:35,285 INFO L445 BasicCegarLoop]: Path program histogram: [33, 20, 19, 14, 12, 12, 7, 6, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-03 19:21:35,289 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:21:35,289 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:21:35,292 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 19:21:35,292 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 19:21:35,293 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:21:35 BasicIcfg [2024-06-03 19:21:35,293 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:21:35,293 INFO L158 Benchmark]: Toolchain (without parser) took 234598.73ms. Allocated memory was 188.7MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 111.6MB in the beginning and 812.7MB in the end (delta: -701.2MB). Peak memory consumption was 506.7MB. Max. memory is 16.1GB. [2024-06-03 19:21:35,293 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 82.6MB in the beginning and 82.2MB in the end (delta: 435.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:21:35,294 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 188.7MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:21:35,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 573.80ms. Allocated memory is still 188.7MB. Free memory was 111.1MB in the beginning and 77.0MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-03 19:21:35,294 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.10ms. Allocated memory is still 188.7MB. Free memory was 77.0MB in the beginning and 73.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-03 19:21:35,295 INFO L158 Benchmark]: Boogie Preprocessor took 39.13ms. Allocated memory is still 188.7MB. Free memory was 73.8MB in the beginning and 70.6MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:21:35,295 INFO L158 Benchmark]: RCFGBuilder took 630.68ms. Allocated memory is still 188.7MB. Free memory was 70.6MB in the beginning and 105.5MB in the end (delta: -34.9MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2024-06-03 19:21:35,295 INFO L158 Benchmark]: TraceAbstraction took 233294.85ms. Allocated memory was 188.7MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 104.4MB in the beginning and 812.7MB in the end (delta: -708.3MB). Peak memory consumption was 497.6MB. Max. memory is 16.1GB. [2024-06-03 19:21:35,296 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory was 82.6MB in the beginning and 82.2MB in the end (delta: 435.3kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 188.7MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 573.80ms. Allocated memory is still 188.7MB. Free memory was 111.1MB in the beginning and 77.0MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.10ms. Allocated memory is still 188.7MB. Free memory was 77.0MB in the beginning and 73.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.13ms. Allocated memory is still 188.7MB. Free memory was 73.8MB in the beginning and 70.6MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 630.68ms. Allocated memory is still 188.7MB. Free memory was 70.6MB in the beginning and 105.5MB in the end (delta: -34.9MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * TraceAbstraction took 233294.85ms. Allocated memory was 188.7MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 104.4MB in the beginning and 812.7MB in the end (delta: -708.3MB). Peak memory consumption was 497.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 824]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 825]: 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, 49 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: 233.2s, OverallIterations: 148, TraceHistogramMax: 1, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.0s, AutomataDifference: 65.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8501 SdHoareTripleChecker+Valid, 34.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7186 mSDsluCounter, 2552 SdHoareTripleChecker+Invalid, 29.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2240 mSDsCounter, 1313 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58938 IncrementalHoareTripleChecker+Invalid, 60251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1313 mSolverCounterUnsat, 312 mSDtfsCounter, 58938 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1575 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 46.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2007occurred in iteration=78, InterpolantAutomatonStates: 1439, 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: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 165.5s InterpolantComputationTime, 2495 NumberOfCodeBlocks, 2495 NumberOfCodeBlocksAsserted, 148 NumberOfCheckSat, 2347 ConstructedInterpolants, 0 QuantifiedInterpolants, 117175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 148 InterpolantComputations, 148 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 19:21:35,375 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