./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.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/mix022_tso.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/mix022_tso.i ./goblint.2024-05-21_14-57-05.files/protection/mix022_tso.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 19:25:45,221 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:25:45,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:25:45,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:25:45,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:25:45,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:25:45,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:25:45,326 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:25:45,326 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:25:45,329 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:25:45,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:25:45,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:25:45,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:25:45,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:25:45,332 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:25:45,332 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:25:45,332 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:25:45,332 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:25:45,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:25:45,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:25:45,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:25:45,333 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:25:45,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:25:45,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:25:45,334 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:25:45,334 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:25:45,334 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:25:45,335 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:25:45,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:25:45,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:25:45,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:25:45,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:25:45,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:25:45,337 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:25:45,337 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:25:45,337 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:25:45,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:25:45,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:25:45,338 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:25:45,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:25:45,338 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:25:45,338 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:25:45,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:25:45,339 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:25:45,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:25:45,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:25:45,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:25:45,566 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:25:45,567 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:25:45,567 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-03 19:25:46,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:25:46,869 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:25:46,870 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-03 19:25:46,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e18dd59/0541f5bf1b0d429db1baaa649817f66b/FLAGd7b8535a0 [2024-06-03 19:25:46,891 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4e18dd59/0541f5bf1b0d429db1baaa649817f66b [2024-06-03 19:25:46,893 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:25:46,893 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:25:46,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix022_tso.yml/witness.yml [2024-06-03 19:25:46,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:25:46,982 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:25:46,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:25:46,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:25:46,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:25:46,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:25:46" (1/2) ... [2024-06-03 19:25:46,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f8c459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:25:46, skipping insertion in model container [2024-06-03 19:25:46,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:25:46" (1/2) ... [2024-06-03 19:25:46,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@116ba9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:25:46, skipping insertion in model container [2024-06-03 19:25:46,993 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:25:46" (2/2) ... [2024-06-03 19:25:46,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f8c459 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:25:46, skipping insertion in model container [2024-06-03 19:25:46,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:25:46" (2/2) ... [2024-06-03 19:25:46,994 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:25:47,056 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:25:47,057 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-03 19:25:47,057 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) [2024-06-03 19:25:47,057 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:25:47,058 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-03 19:25:47,099 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:25:47,398 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:25:47,430 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:25:47,571 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:25:47,609 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:25:47,610 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:25:47 WrapperNode [2024-06-03 19:25:47,610 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:25:47,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:25:47,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:25:47,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:25:47,616 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,648 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,692 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2024-06-03 19:25:47,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:25:47,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:25:47,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:25:47,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:25:47,708 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,709 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,711 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,768 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 19:25:47,768 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,769 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,775 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,797 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,799 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,816 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:25:47,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:25:47,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:25:47,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:25:47,821 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 07:25:47" (1/1) ... [2024-06-03 19:25:47,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:25:47,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:25:47,884 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 19:25:47,888 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 19:25:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:25:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:25:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 19:25:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 19:25:47,919 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 19:25:47,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 19:25:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:25:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:25:47,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:25:47,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:25:47,921 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 19:25:48,068 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:25:48,070 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:25:48,374 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:25:48,374 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:25:48,509 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:25:48,509 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 19:25:48,511 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:25:48 BoogieIcfgContainer [2024-06-03 19:25:48,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:25:48,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:25:48,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:25:48,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:25:48,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:25:46" (1/4) ... [2024-06-03 19:25:48,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df177ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:25:48, skipping insertion in model container [2024-06-03 19:25:48,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:25:46" (2/4) ... [2024-06-03 19:25:48,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df177ed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:25:48, skipping insertion in model container [2024-06-03 19:25:48,518 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 07:25:47" (3/4) ... [2024-06-03 19:25:48,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df177ed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:25:48, skipping insertion in model container [2024-06-03 19:25:48,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:25:48" (4/4) ... [2024-06-03 19:25:48,519 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2024-06-03 19:25:48,531 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:25:48,532 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 19:25:48,532 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:25:48,566 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 19:25:48,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-03 19:25:48,629 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-03 19:25:48,629 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:25:48,632 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 19:25:48,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-03 19:25:48,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-03 19:25:48,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:25:48,653 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;@23d9fb46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:25:48,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 19:25:48,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:25:48,657 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 19:25:48,658 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:25:48,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:48,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 19:25:48,659 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 19:25:48,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:48,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1606705191, now seen corresponding path program 1 times [2024-06-03 19:25:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:48,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697901606] [2024-06-03 19:25:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:48,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:49,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:49,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697901606] [2024-06-03 19:25:49,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697901606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:49,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:49,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 19:25:49,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30895510] [2024-06-03 19:25:49,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:49,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:25:49,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:25:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:25:49,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-03 19:25:49,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:49,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:49,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-03 19:25:49,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:49,812 INFO L124 PetriNetUnfolderBase]: 162/309 cut-off events. [2024-06-03 19:25:49,813 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-03 19:25:49,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 309 events. 162/309 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1128 event pairs, 97 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 608. Up to 288 conditions per place. [2024-06-03 19:25:49,818 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-03 19:25:49,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-03 19:25:49,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:25:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:25:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-03 19:25:49,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-03 19:25:49,828 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-03 19:25:49,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-03 19:25:49,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 19:25:49,832 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-03 19:25:49,833 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 19:25:49,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-03 19:25:49,836 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-03 19:25:49,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:49,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:49,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:49,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:25:49,837 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 19:25:49,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2144571448, now seen corresponding path program 1 times [2024-06-03 19:25:49,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:49,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812473182] [2024-06-03 19:25:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:49,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:50,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:50,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812473182] [2024-06-03 19:25:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812473182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:25:50,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459260503] [2024-06-03 19:25:50,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:50,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:25:50,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:25:50,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:25:50,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 19:25:50,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:50,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:50,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 19:25:50,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:50,481 INFO L124 PetriNetUnfolderBase]: 186/337 cut-off events. [2024-06-03 19:25:50,481 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-06-03 19:25:50,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 337 events. 186/337 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1172 event pairs, 94 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 766. Up to 319 conditions per place. [2024-06-03 19:25:50,487 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-03 19:25:50,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 163 flow [2024-06-03 19:25:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:25:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:25:50,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-06-03 19:25:50,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47580645161290325 [2024-06-03 19:25:50,491 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 59 transitions. [2024-06-03 19:25:50,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 163 flow [2024-06-03 19:25:50,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:25:50,494 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-03 19:25:50,494 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 19:25:50,495 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-03 19:25:50,495 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-03 19:25:50,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:50,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:50,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:50,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:25:50,497 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 19:25:50,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2057206554, now seen corresponding path program 1 times [2024-06-03 19:25:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:50,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602387129] [2024-06-03 19:25:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:51,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602387129] [2024-06-03 19:25:51,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602387129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:51,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:51,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:25:51,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785768237] [2024-06-03 19:25:51,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:51,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:25:51,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:51,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:25:51,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:25:51,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 19:25:51,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:51,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:51,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 19:25:51,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:51,235 INFO L124 PetriNetUnfolderBase]: 180/327 cut-off events. [2024-06-03 19:25:51,235 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-03 19:25:51,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 327 events. 180/327 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1119 event pairs, 52 based on Foata normal form. 4/330 useless extension candidates. Maximal degree in co-relation 822. Up to 291 conditions per place. [2024-06-03 19:25:51,237 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-03 19:25:51,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 215 flow [2024-06-03 19:25:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:25:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:25:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-06-03 19:25:51,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2024-06-03 19:25:51,239 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 72 transitions. [2024-06-03 19:25:51,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 215 flow [2024-06-03 19:25:51,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 19:25:51,264 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-03 19:25:51,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-03 19:25:51,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-03 19:25:51,265 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-03 19:25:51,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:51,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:51,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:51,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:25:51,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:25:51,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:51,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1290578649, now seen corresponding path program 1 times [2024-06-03 19:25:51,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:51,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167291984] [2024-06-03 19:25:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:51,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:52,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:52,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167291984] [2024-06-03 19:25:52,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167291984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:52,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:52,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:25:52,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215979919] [2024-06-03 19:25:52,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:52,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:25:52,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:52,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:25:52,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:25:52,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 19:25:52,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:52,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:52,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 19:25:52,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:52,456 INFO L124 PetriNetUnfolderBase]: 176/319 cut-off events. [2024-06-03 19:25:52,457 INFO L125 PetriNetUnfolderBase]: For 314/314 co-relation queries the response was YES. [2024-06-03 19:25:52,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 319 events. 176/319 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1082 event pairs, 30 based on Foata normal form. 4/322 useless extension candidates. Maximal degree in co-relation 873. Up to 265 conditions per place. [2024-06-03 19:25:52,458 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-03 19:25:52,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 229 flow [2024-06-03 19:25:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:25:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:25:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-03 19:25:52,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2024-06-03 19:25:52,460 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 79 transitions. [2024-06-03 19:25:52,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 229 flow [2024-06-03 19:25:52,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 214 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 19:25:52,462 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-03 19:25:52,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-03 19:25:52,463 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-03 19:25:52,463 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-03 19:25:52,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:52,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:52,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:52,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:25:52,464 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 19:25:52,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash 672537551, now seen corresponding path program 1 times [2024-06-03 19:25:52,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:52,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579240624] [2024-06-03 19:25:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:52,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:52,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:52,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579240624] [2024-06-03 19:25:52,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579240624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:52,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:52,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:25:52,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923142773] [2024-06-03 19:25:52,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:52,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 19:25:52,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:52,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 19:25:52,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 19:25:52,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 19:25:52,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:52,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:52,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 19:25:52,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:53,115 INFO L124 PetriNetUnfolderBase]: 147/283 cut-off events. [2024-06-03 19:25:53,116 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-03 19:25:53,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 283 events. 147/283 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 985 event pairs, 53 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 792. Up to 259 conditions per place. [2024-06-03 19:25:53,118 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-03 19:25:53,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 198 flow [2024-06-03 19:25:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:25:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:25:53,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-06-03 19:25:53,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-03 19:25:53,119 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 59 transitions. [2024-06-03 19:25:53,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 198 flow [2024-06-03 19:25:53,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 178 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 19:25:53,121 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 123 flow [2024-06-03 19:25:53,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, 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=123, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-03 19:25:53,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-03 19:25:53,122 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 123 flow [2024-06-03 19:25:53,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:53,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:53,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:53,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:25:53,123 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 19:25:53,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash -616340437, now seen corresponding path program 1 times [2024-06-03 19:25:53,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:53,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48069112] [2024-06-03 19:25:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:53,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:53,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:53,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48069112] [2024-06-03 19:25:53,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48069112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:53,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:53,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:25:53,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640343805] [2024-06-03 19:25:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:53,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:25:53,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:53,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:25:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:25:54,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-03 19:25:54,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:54,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:54,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-03 19:25:54,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:54,147 INFO L124 PetriNetUnfolderBase]: 143/277 cut-off events. [2024-06-03 19:25:54,147 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2024-06-03 19:25:54,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 824 conditions, 277 events. 143/277 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 956 event pairs, 51 based on Foata normal form. 2/278 useless extension candidates. Maximal degree in co-relation 803. Up to 247 conditions per place. [2024-06-03 19:25:54,149 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 28 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-03 19:25:54,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 219 flow [2024-06-03 19:25:54,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:25:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:25:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-03 19:25:54,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-03 19:25:54,150 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 123 flow. Second operand 6 states and 69 transitions. [2024-06-03 19:25:54,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 219 flow [2024-06-03 19:25:54,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 208 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-03 19:25:54,152 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 145 flow [2024-06-03 19:25:54,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, 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=145, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-03 19:25:54,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-03 19:25:54,153 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 145 flow [2024-06-03 19:25:54,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:54,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:54,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:54,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:25:54,154 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 19:25:54,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1661963166, now seen corresponding path program 1 times [2024-06-03 19:25:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:54,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196604142] [2024-06-03 19:25:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:54,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:54,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:54,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196604142] [2024-06-03 19:25:54,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196604142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:54,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:54,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:25:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609538239] [2024-06-03 19:25:54,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:54,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:25:54,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:25:54,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:25:54,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:25:54,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:54,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:54,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:25:54,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:54,866 INFO L124 PetriNetUnfolderBase]: 171/312 cut-off events. [2024-06-03 19:25:54,867 INFO L125 PetriNetUnfolderBase]: For 716/716 co-relation queries the response was YES. [2024-06-03 19:25:54,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 312 events. 171/312 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1032 event pairs, 61 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 993. Up to 291 conditions per place. [2024-06-03 19:25:54,869 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-03 19:25:54,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 257 flow [2024-06-03 19:25:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:25:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:25:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-03 19:25:54,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 19:25:54,870 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 145 flow. Second operand 6 states and 66 transitions. [2024-06-03 19:25:54,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 257 flow [2024-06-03 19:25:54,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 240 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 19:25:54,872 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 161 flow [2024-06-03 19:25:54,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, 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=161, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-03 19:25:54,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-03 19:25:54,873 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 161 flow [2024-06-03 19:25:54,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:54,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:54,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:54,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:25:54,874 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 19:25:54,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2063514030, now seen corresponding path program 2 times [2024-06-03 19:25:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861009771] [2024-06-03 19:25:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:54,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:55,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:55,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861009771] [2024-06-03 19:25:55,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861009771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:55,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:55,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 19:25:55,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224569020] [2024-06-03 19:25:55,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:55,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:25:55,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:55,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:25:55,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:25:55,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:25:55,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:55,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:55,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:25:55,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:55,637 INFO L124 PetriNetUnfolderBase]: 169/310 cut-off events. [2024-06-03 19:25:55,638 INFO L125 PetriNetUnfolderBase]: For 927/930 co-relation queries the response was YES. [2024-06-03 19:25:55,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 310 events. 169/310 cut-off events. For 927/930 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1031 event pairs, 65 based on Foata normal form. 3/311 useless extension candidates. Maximal degree in co-relation 1035. Up to 282 conditions per place. [2024-06-03 19:25:55,640 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 29 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-06-03 19:25:55,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 267 flow [2024-06-03 19:25:55,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 19:25:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 19:25:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-03 19:25:55,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-03 19:25:55,641 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 161 flow. Second operand 6 states and 65 transitions. [2024-06-03 19:25:55,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 267 flow [2024-06-03 19:25:55,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 250 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 19:25:55,643 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 187 flow [2024-06-03 19:25:55,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=144, 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=187, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-03 19:25:55,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-03 19:25:55,644 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 187 flow [2024-06-03 19:25:55,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:55,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:55,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:55,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:25:55,645 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 19:25:55,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:55,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1214428462, now seen corresponding path program 1 times [2024-06-03 19:25:55,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:55,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752188830] [2024-06-03 19:25:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:55,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:56,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:56,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752188830] [2024-06-03 19:25:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752188830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:56,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:56,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:25:56,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791709282] [2024-06-03 19:25:56,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:56,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:25:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:25:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:25:56,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:25:56,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:56,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:56,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:25:56,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:56,472 INFO L124 PetriNetUnfolderBase]: 191/350 cut-off events. [2024-06-03 19:25:56,472 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2024-06-03 19:25:56,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 350 events. 191/350 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1219 event pairs, 43 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 1225. Up to 288 conditions per place. [2024-06-03 19:25:56,475 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 16 changer transitions 0/60 dead transitions. [2024-06-03 19:25:56,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 387 flow [2024-06-03 19:25:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:25:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:25:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-03 19:25:56,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-03 19:25:56,476 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 187 flow. Second operand 8 states and 89 transitions. [2024-06-03 19:25:56,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 387 flow [2024-06-03 19:25:56,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 19:25:56,478 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 263 flow [2024-06-03 19:25:56,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-03 19:25:56,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-03 19:25:56,479 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 263 flow [2024-06-03 19:25:56,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:56,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:56,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:56,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:25:56,480 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 19:25:56,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:56,480 INFO L85 PathProgramCache]: Analyzing trace with hash -632825254, now seen corresponding path program 2 times [2024-06-03 19:25:56,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:56,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102663390] [2024-06-03 19:25:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:56,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:57,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:57,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102663390] [2024-06-03 19:25:57,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102663390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:57,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:57,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:25:57,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732858412] [2024-06-03 19:25:57,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:57,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:25:57,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:57,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:25:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:25:57,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:25:57,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:57,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:57,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:25:57,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:57,274 INFO L124 PetriNetUnfolderBase]: 197/360 cut-off events. [2024-06-03 19:25:57,274 INFO L125 PetriNetUnfolderBase]: For 1681/1681 co-relation queries the response was YES. [2024-06-03 19:25:57,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 360 events. 197/360 cut-off events. For 1681/1681 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1256 event pairs, 42 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 1413. Up to 290 conditions per place. [2024-06-03 19:25:57,276 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 21 changer transitions 0/63 dead transitions. [2024-06-03 19:25:57,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 459 flow [2024-06-03 19:25:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:25:57,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:25:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 19:25:57,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-03 19:25:57,278 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 263 flow. Second operand 7 states and 79 transitions. [2024-06-03 19:25:57,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 459 flow [2024-06-03 19:25:57,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 434 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 19:25:57,280 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 336 flow [2024-06-03 19:25:57,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-03 19:25:57,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-03 19:25:57,281 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 336 flow [2024-06-03 19:25:57,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:57,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:57,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:57,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:25:57,282 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 19:25:57,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:57,282 INFO L85 PathProgramCache]: Analyzing trace with hash 395682570, now seen corresponding path program 1 times [2024-06-03 19:25:57,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:57,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107024661] [2024-06-03 19:25:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:58,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:58,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107024661] [2024-06-03 19:25:58,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107024661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:58,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:58,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:25:58,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130953862] [2024-06-03 19:25:58,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:58,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:25:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:25:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:25:58,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:25:58,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 336 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:58,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:58,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:25:58,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:58,316 INFO L124 PetriNetUnfolderBase]: 200/365 cut-off events. [2024-06-03 19:25:58,316 INFO L125 PetriNetUnfolderBase]: For 2098/2098 co-relation queries the response was YES. [2024-06-03 19:25:58,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 365 events. 200/365 cut-off events. For 2098/2098 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1277 event pairs, 44 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1559. Up to 334 conditions per place. [2024-06-03 19:25:58,319 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-03 19:25:58,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 496 flow [2024-06-03 19:25:58,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:25:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:25:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-03 19:25:58,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-03 19:25:58,320 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 336 flow. Second operand 7 states and 74 transitions. [2024-06-03 19:25:58,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 496 flow [2024-06-03 19:25:58,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 463 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-03 19:25:58,326 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 346 flow [2024-06-03 19:25:58,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-03 19:25:58,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-03 19:25:58,327 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 346 flow [2024-06-03 19:25:58,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:58,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:58,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:58,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:25:58,327 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 19:25:58,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash -632705284, now seen corresponding path program 3 times [2024-06-03 19:25:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:58,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638424105] [2024-06-03 19:25:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:58,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:58,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:25:58,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:58,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638424105] [2024-06-03 19:25:58,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638424105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:58,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:58,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:25:58,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690703293] [2024-06-03 19:25:58,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:58,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:25:58,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:25:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:25:58,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:25:58,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 346 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:58,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:25:58,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:25:58,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:25:59,046 INFO L124 PetriNetUnfolderBase]: 211/383 cut-off events. [2024-06-03 19:25:59,046 INFO L125 PetriNetUnfolderBase]: For 2205/2205 co-relation queries the response was YES. [2024-06-03 19:25:59,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 383 events. 211/383 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1357 event pairs, 46 based on Foata normal form. 2/384 useless extension candidates. Maximal degree in co-relation 1612. Up to 296 conditions per place. [2024-06-03 19:25:59,048 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 43 selfloop transitions, 23 changer transitions 0/68 dead transitions. [2024-06-03 19:25:59,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 564 flow [2024-06-03 19:25:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:25:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:25:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-03 19:25:59,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-03 19:25:59,050 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 346 flow. Second operand 7 states and 80 transitions. [2024-06-03 19:25:59,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 564 flow [2024-06-03 19:25:59,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 537 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 19:25:59,054 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 406 flow [2024-06-03 19:25:59,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=406, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-03 19:25:59,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-03 19:25:59,056 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 406 flow [2024-06-03 19:25:59,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:25:59,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:25:59,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:25:59,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:25:59,057 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 19:25:59,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:25:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash 402348810, now seen corresponding path program 2 times [2024-06-03 19:25:59,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:25:59,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803961048] [2024-06-03 19:25:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:25:59,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:25:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:25:59,966 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 19:25:59,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:25:59,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803961048] [2024-06-03 19:25:59,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803961048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:25:59,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:25:59,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:25:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851196770] [2024-06-03 19:25:59,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:25:59,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:25:59,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:25:59,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:25:59,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:26:00,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:00,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 406 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:00,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:00,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:00,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:00,172 INFO L124 PetriNetUnfolderBase]: 214/389 cut-off events. [2024-06-03 19:26:00,180 INFO L125 PetriNetUnfolderBase]: For 2713/2719 co-relation queries the response was YES. [2024-06-03 19:26:00,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 389 events. 214/389 cut-off events. For 2713/2719 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1389 event pairs, 48 based on Foata normal form. 5/391 useless extension candidates. Maximal degree in co-relation 1727. Up to 341 conditions per place. [2024-06-03 19:26:00,184 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 49 selfloop transitions, 19 changer transitions 0/70 dead transitions. [2024-06-03 19:26:00,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 622 flow [2024-06-03 19:26:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:26:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:26:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-03 19:26:00,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3456221198156682 [2024-06-03 19:26:00,185 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 406 flow. Second operand 7 states and 75 transitions. [2024-06-03 19:26:00,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 622 flow [2024-06-03 19:26:00,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 595 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 19:26:00,191 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 468 flow [2024-06-03 19:26:00,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-06-03 19:26:00,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-03 19:26:00,193 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 468 flow [2024-06-03 19:26:00,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:00,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:00,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:00,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:26:00,193 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 19:26:00,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:00,194 INFO L85 PathProgramCache]: Analyzing trace with hash 328153898, now seen corresponding path program 3 times [2024-06-03 19:26:00,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:00,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651172950] [2024-06-03 19:26:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:00,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:00,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651172950] [2024-06-03 19:26:00,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651172950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:00,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:00,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:26:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156939239] [2024-06-03 19:26:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:00,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:26:00,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:00,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:26:00,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:26:00,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:00,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 468 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:00,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:00,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:00,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:01,126 INFO L124 PetriNetUnfolderBase]: 212/386 cut-off events. [2024-06-03 19:26:01,126 INFO L125 PetriNetUnfolderBase]: For 2992/2998 co-relation queries the response was YES. [2024-06-03 19:26:01,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 386 events. 212/386 cut-off events. For 2992/2998 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1380 event pairs, 48 based on Foata normal form. 5/388 useless extension candidates. Maximal degree in co-relation 1795. Up to 348 conditions per place. [2024-06-03 19:26:01,129 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 53 selfloop transitions, 15 changer transitions 0/70 dead transitions. [2024-06-03 19:26:01,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 635 flow [2024-06-03 19:26:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:26:01,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:26:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-03 19:26:01,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33640552995391704 [2024-06-03 19:26:01,130 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 468 flow. Second operand 7 states and 73 transitions. [2024-06-03 19:26:01,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 635 flow [2024-06-03 19:26:01,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 603 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-03 19:26:01,135 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 480 flow [2024-06-03 19:26:01,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-03 19:26:01,136 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-03 19:26:01,137 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 480 flow [2024-06-03 19:26:01,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:01,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:01,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:01,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:26:01,137 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 19:26:01,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash 23391782, now seen corresponding path program 4 times [2024-06-03 19:26:01,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:01,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885952841] [2024-06-03 19:26:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:01,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:01,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:01,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885952841] [2024-06-03 19:26:01,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885952841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:01,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:01,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:26:01,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174414708] [2024-06-03 19:26:01,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:01,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:26:01,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:26:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:26:01,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:01,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 480 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:01,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:01,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:01,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:01,935 INFO L124 PetriNetUnfolderBase]: 208/380 cut-off events. [2024-06-03 19:26:01,936 INFO L125 PetriNetUnfolderBase]: For 3307/3313 co-relation queries the response was YES. [2024-06-03 19:26:01,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 380 events. 208/380 cut-off events. For 3307/3313 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1368 event pairs, 50 based on Foata normal form. 2/377 useless extension candidates. Maximal degree in co-relation 1788. Up to 280 conditions per place. [2024-06-03 19:26:01,939 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 27 changer transitions 0/74 dead transitions. [2024-06-03 19:26:01,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 698 flow [2024-06-03 19:26:01,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:26:01,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:26:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 19:26:01,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-03 19:26:01,940 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 480 flow. Second operand 7 states and 79 transitions. [2024-06-03 19:26:01,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 698 flow [2024-06-03 19:26:01,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 74 transitions, 667 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 19:26:01,945 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 532 flow [2024-06-03 19:26:01,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=532, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-03 19:26:01,946 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-03 19:26:01,946 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 532 flow [2024-06-03 19:26:01,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:01,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:01,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:01,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:26:01,947 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 19:26:01,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1111554519, now seen corresponding path program 1 times [2024-06-03 19:26:01,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:01,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378265678] [2024-06-03 19:26:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:01,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:02,782 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 19:26:02,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:02,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378265678] [2024-06-03 19:26:02,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378265678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:02,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:02,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:02,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254030223] [2024-06-03 19:26:02,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:02,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:02,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:02,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:02,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:02,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:02,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:02,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:03,056 INFO L124 PetriNetUnfolderBase]: 206/376 cut-off events. [2024-06-03 19:26:03,056 INFO L125 PetriNetUnfolderBase]: For 3523/3523 co-relation queries the response was YES. [2024-06-03 19:26:03,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 376 events. 206/376 cut-off events. For 3523/3523 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1343 event pairs, 43 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1845. Up to 301 conditions per place. [2024-06-03 19:26:03,058 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 54 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-03 19:26:03,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 77 transitions, 722 flow [2024-06-03 19:26:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 19:26:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 19:26:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-03 19:26:03,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-03 19:26:03,060 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 532 flow. Second operand 7 states and 79 transitions. [2024-06-03 19:26:03,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 77 transitions, 722 flow [2024-06-03 19:26:03,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 77 transitions, 649 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-03 19:26:03,065 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 514 flow [2024-06-03 19:26:03,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=514, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2024-06-03 19:26:03,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-03 19:26:03,066 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 514 flow [2024-06-03 19:26:03,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:03,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:03,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:03,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:26:03,066 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 19:26:03,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:03,067 INFO L85 PathProgramCache]: Analyzing trace with hash 577536574, now seen corresponding path program 1 times [2024-06-03 19:26:03,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:03,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500118247] [2024-06-03 19:26:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:03,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:03,776 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 19:26:03,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:03,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500118247] [2024-06-03 19:26:03,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500118247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:03,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:03,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:03,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026952487] [2024-06-03 19:26:03,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:03,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:03,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:03,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:03,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:03,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:03,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 514 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:03,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:03,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:03,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:04,070 INFO L124 PetriNetUnfolderBase]: 218/396 cut-off events. [2024-06-03 19:26:04,071 INFO L125 PetriNetUnfolderBase]: For 4041/4041 co-relation queries the response was YES. [2024-06-03 19:26:04,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1979 conditions, 396 events. 218/396 cut-off events. For 4041/4041 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1446 event pairs, 45 based on Foata normal form. 2/394 useless extension candidates. Maximal degree in co-relation 1940. Up to 326 conditions per place. [2024-06-03 19:26:04,074 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 61 selfloop transitions, 22 changer transitions 0/85 dead transitions. [2024-06-03 19:26:04,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 805 flow [2024-06-03 19:26:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:26:04,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-03 19:26:04,076 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 514 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:26:04,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 805 flow [2024-06-03 19:26:04,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 747 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:04,082 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 632 flow [2024-06-03 19:26:04,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=632, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-03 19:26:04,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-03 19:26:04,083 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 632 flow [2024-06-03 19:26:04,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:04,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:04,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:04,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 19:26:04,083 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 19:26:04,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1456416758, now seen corresponding path program 2 times [2024-06-03 19:26:04,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:04,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363131595] [2024-06-03 19:26:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:04,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:04,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:04,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363131595] [2024-06-03 19:26:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363131595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343295241] [2024-06-03 19:26:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:04,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:04,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:04,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:04,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:04,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:04,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 632 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:04,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:04,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:04,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:05,173 INFO L124 PetriNetUnfolderBase]: 224/406 cut-off events. [2024-06-03 19:26:05,173 INFO L125 PetriNetUnfolderBase]: For 4556/4556 co-relation queries the response was YES. [2024-06-03 19:26:05,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2134 conditions, 406 events. 224/406 cut-off events. For 4556/4556 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1489 event pairs, 44 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 2089. Up to 336 conditions per place. [2024-06-03 19:26:05,176 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 27 changer transitions 0/92 dead transitions. [2024-06-03 19:26:05,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 893 flow [2024-06-03 19:26:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:26:05,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 19:26:05,177 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 632 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:26:05,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 893 flow [2024-06-03 19:26:05,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 857 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-03 19:26:05,183 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 709 flow [2024-06-03 19:26:05,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=709, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2024-06-03 19:26:05,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-03 19:26:05,184 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 709 flow [2024-06-03 19:26:05,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:05,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:05,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:05,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 19:26:05,184 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 19:26:05,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:05,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1144947182, now seen corresponding path program 3 times [2024-06-03 19:26:05,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:05,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423610741] [2024-06-03 19:26:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:05,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:05,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:05,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423610741] [2024-06-03 19:26:05,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423610741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:05,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:05,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:05,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071498566] [2024-06-03 19:26:05,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:05,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:05,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:05,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:05,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:05,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:05,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 709 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:05,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:05,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:05,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:06,212 INFO L124 PetriNetUnfolderBase]: 230/416 cut-off events. [2024-06-03 19:26:06,213 INFO L125 PetriNetUnfolderBase]: For 5271/5271 co-relation queries the response was YES. [2024-06-03 19:26:06,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 416 events. 230/416 cut-off events. For 5271/5271 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1537 event pairs, 43 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 2218. Up to 346 conditions per place. [2024-06-03 19:26:06,216 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 23 changer transitions 0/93 dead transitions. [2024-06-03 19:26:06,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 955 flow [2024-06-03 19:26:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:06,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:26:06,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-03 19:26:06,217 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 709 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:26:06,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 955 flow [2024-06-03 19:26:06,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 93 transitions, 866 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:26:06,227 INFO L231 Difference]: Finished difference. Result has 95 places, 79 transitions, 699 flow [2024-06-03 19:26:06,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=699, PETRI_PLACES=95, PETRI_TRANSITIONS=79} [2024-06-03 19:26:06,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-03 19:26:06,227 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 79 transitions, 699 flow [2024-06-03 19:26:06,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:06,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:06,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:06,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 19:26:06,228 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 19:26:06,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:06,229 INFO L85 PathProgramCache]: Analyzing trace with hash -634876266, now seen corresponding path program 4 times [2024-06-03 19:26:06,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:06,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279840371] [2024-06-03 19:26:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:06,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:06,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:06,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279840371] [2024-06-03 19:26:06,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279840371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:06,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:06,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:06,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196275344] [2024-06-03 19:26:06,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:06,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:06,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:07,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:07,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 79 transitions, 699 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:07,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:07,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:07,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:07,196 INFO L124 PetriNetUnfolderBase]: 242/438 cut-off events. [2024-06-03 19:26:07,197 INFO L125 PetriNetUnfolderBase]: For 5913/5913 co-relation queries the response was YES. [2024-06-03 19:26:07,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 438 events. 242/438 cut-off events. For 5913/5913 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1655 event pairs, 74 based on Foata normal form. 2/439 useless extension candidates. Maximal degree in co-relation 2321. Up to 401 conditions per place. [2024-06-03 19:26:07,200 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-06-03 19:26:07,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 995 flow [2024-06-03 19:26:07,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:07,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 19:26:07,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-03 19:26:07,201 INFO L175 Difference]: Start difference. First operand has 95 places, 79 transitions, 699 flow. Second operand 9 states and 92 transitions. [2024-06-03 19:26:07,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 995 flow [2024-06-03 19:26:07,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 930 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:07,212 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 771 flow [2024-06-03 19:26:07,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=771, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-06-03 19:26:07,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-03 19:26:07,212 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 771 flow [2024-06-03 19:26:07,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:07,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:07,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:07,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 19:26:07,213 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 19:26:07,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash -634876049, now seen corresponding path program 1 times [2024-06-03 19:26:07,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:07,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241918327] [2024-06-03 19:26:07,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:07,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:07,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241918327] [2024-06-03 19:26:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241918327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:07,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:07,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:07,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674559082] [2024-06-03 19:26:07,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:07,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:07,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:07,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:07,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:08,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:08,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 771 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:08,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:08,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:08,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:08,223 INFO L124 PetriNetUnfolderBase]: 248/448 cut-off events. [2024-06-03 19:26:08,223 INFO L125 PetriNetUnfolderBase]: For 6488/6488 co-relation queries the response was YES. [2024-06-03 19:26:08,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2460 conditions, 448 events. 248/448 cut-off events. For 6488/6488 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1709 event pairs, 73 based on Foata normal form. 2/449 useless extension candidates. Maximal degree in co-relation 2409. Up to 411 conditions per place. [2024-06-03 19:26:08,226 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-06-03 19:26:08,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 100 transitions, 1013 flow [2024-06-03 19:26:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 19:26:08,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-03 19:26:08,227 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 771 flow. Second operand 9 states and 92 transitions. [2024-06-03 19:26:08,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 100 transitions, 1013 flow [2024-06-03 19:26:08,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 962 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-03 19:26:08,235 INFO L231 Difference]: Finished difference. Result has 105 places, 88 transitions, 779 flow [2024-06-03 19:26:08,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=779, PETRI_PLACES=105, PETRI_TRANSITIONS=88} [2024-06-03 19:26:08,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-03 19:26:08,236 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 88 transitions, 779 flow [2024-06-03 19:26:08,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:08,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:08,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:08,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 19:26:08,237 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 19:26:08,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1141228112, now seen corresponding path program 5 times [2024-06-03 19:26:08,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:08,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293852733] [2024-06-03 19:26:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:08,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:08,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:08,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293852733] [2024-06-03 19:26:08,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293852733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:08,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:08,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:08,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982748708] [2024-06-03 19:26:08,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:08,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:08,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:08,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:09,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:09,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 88 transitions, 779 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:09,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:09,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:09,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:09,281 INFO L124 PetriNetUnfolderBase]: 268/480 cut-off events. [2024-06-03 19:26:09,281 INFO L125 PetriNetUnfolderBase]: For 7248/7248 co-relation queries the response was YES. [2024-06-03 19:26:09,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 480 events. 268/480 cut-off events. For 7248/7248 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1845 event pairs, 46 based on Foata normal form. 2/481 useless extension candidates. Maximal degree in co-relation 2635. Up to 362 conditions per place. [2024-06-03 19:26:09,284 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 36 changer transitions 0/111 dead transitions. [2024-06-03 19:26:09,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 1167 flow [2024-06-03 19:26:09,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:09,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 19:26:09,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-03 19:26:09,287 INFO L175 Difference]: Start difference. First operand has 105 places, 88 transitions, 779 flow. Second operand 9 states and 102 transitions. [2024-06-03 19:26:09,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 1167 flow [2024-06-03 19:26:09,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 1115 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-03 19:26:09,297 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 917 flow [2024-06-03 19:26:09,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-06-03 19:26:09,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-03 19:26:09,298 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 917 flow [2024-06-03 19:26:09,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:09,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:09,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:09,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 19:26:09,299 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 19:26:09,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:09,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1860979188, now seen corresponding path program 6 times [2024-06-03 19:26:09,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:09,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916305202] [2024-06-03 19:26:09,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:09,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:09,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:09,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916305202] [2024-06-03 19:26:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916305202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:09,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:09,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:09,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576460416] [2024-06-03 19:26:09,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:09,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:09,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:10,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:10,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 917 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:10,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:10,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:10,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:10,273 INFO L124 PetriNetUnfolderBase]: 274/491 cut-off events. [2024-06-03 19:26:10,274 INFO L125 PetriNetUnfolderBase]: For 8353/8353 co-relation queries the response was YES. [2024-06-03 19:26:10,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2884 conditions, 491 events. 274/491 cut-off events. For 8353/8353 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1931 event pairs, 75 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2830. Up to 442 conditions per place. [2024-06-03 19:26:10,277 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 83 selfloop transitions, 22 changer transitions 0/107 dead transitions. [2024-06-03 19:26:10,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 1189 flow [2024-06-03 19:26:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-03 19:26:10,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-03 19:26:10,278 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 917 flow. Second operand 8 states and 83 transitions. [2024-06-03 19:26:10,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 1189 flow [2024-06-03 19:26:10,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 107 transitions, 1137 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-03 19:26:10,289 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 957 flow [2024-06-03 19:26:10,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=957, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-03 19:26:10,290 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-03 19:26:10,290 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 957 flow [2024-06-03 19:26:10,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:10,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:10,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:10,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 19:26:10,291 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 19:26:10,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1860979405, now seen corresponding path program 2 times [2024-06-03 19:26:10,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:10,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148183437] [2024-06-03 19:26:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:10,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:10,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:10,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148183437] [2024-06-03 19:26:10,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148183437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:10,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:10,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:10,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823748023] [2024-06-03 19:26:10,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:10,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:10,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:10,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:10,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:11,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:11,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 957 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:11,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:11,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:11,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:11,228 INFO L124 PetriNetUnfolderBase]: 280/501 cut-off events. [2024-06-03 19:26:11,228 INFO L125 PetriNetUnfolderBase]: For 9060/9060 co-relation queries the response was YES. [2024-06-03 19:26:11,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 501 events. 280/501 cut-off events. For 9060/9060 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1959 event pairs, 77 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2945. Up to 452 conditions per place. [2024-06-03 19:26:11,232 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 85 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-03 19:26:11,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 109 transitions, 1215 flow [2024-06-03 19:26:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-03 19:26:11,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-03 19:26:11,235 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 957 flow. Second operand 8 states and 83 transitions. [2024-06-03 19:26:11,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 109 transitions, 1215 flow [2024-06-03 19:26:11,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 109 transitions, 1153 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:11,249 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 971 flow [2024-06-03 19:26:11,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-06-03 19:26:11,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-03 19:26:11,250 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 971 flow [2024-06-03 19:26:11,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:11,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:11,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 19:26:11,251 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 19:26:11,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:11,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1860973608, now seen corresponding path program 7 times [2024-06-03 19:26:11,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:11,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125702978] [2024-06-03 19:26:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:11,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125702978] [2024-06-03 19:26:11,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125702978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:11,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:11,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:11,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456300283] [2024-06-03 19:26:11,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:11,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:11,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:11,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:11,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:11,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:11,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 971 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:11,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:11,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:11,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:12,242 INFO L124 PetriNetUnfolderBase]: 286/510 cut-off events. [2024-06-03 19:26:12,243 INFO L125 PetriNetUnfolderBase]: For 9728/9728 co-relation queries the response was YES. [2024-06-03 19:26:12,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 510 events. 286/510 cut-off events. For 9728/9728 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2009 event pairs, 43 based on Foata normal form. 2/511 useless extension candidates. Maximal degree in co-relation 3056. Up to 395 conditions per place. [2024-06-03 19:26:12,247 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 75 selfloop transitions, 36 changer transitions 0/113 dead transitions. [2024-06-03 19:26:12,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 113 transitions, 1267 flow [2024-06-03 19:26:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 19:26:12,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 19:26:12,249 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 971 flow. Second operand 8 states and 88 transitions. [2024-06-03 19:26:12,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 113 transitions, 1267 flow [2024-06-03 19:26:12,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 1211 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:12,263 INFO L231 Difference]: Finished difference. Result has 116 places, 101 transitions, 1039 flow [2024-06-03 19:26:12,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1039, PETRI_PLACES=116, PETRI_TRANSITIONS=101} [2024-06-03 19:26:12,264 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-03 19:26:12,264 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 101 transitions, 1039 flow [2024-06-03 19:26:12,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:12,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:12,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:12,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 19:26:12,266 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 19:26:12,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:12,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1230259507, now seen corresponding path program 3 times [2024-06-03 19:26:12,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:12,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248689830] [2024-06-03 19:26:12,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:12,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:13,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:13,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248689830] [2024-06-03 19:26:13,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248689830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:13,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:13,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:13,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963466898] [2024-06-03 19:26:13,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:13,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:13,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:13,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:13,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:13,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:13,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 101 transitions, 1039 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:13,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:13,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:13,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:13,519 INFO L124 PetriNetUnfolderBase]: 289/517 cut-off events. [2024-06-03 19:26:13,520 INFO L125 PetriNetUnfolderBase]: For 9881/9881 co-relation queries the response was YES. [2024-06-03 19:26:13,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 517 events. 289/517 cut-off events. For 9881/9881 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2071 event pairs, 94 based on Foata normal form. 1/517 useless extension candidates. Maximal degree in co-relation 3114. Up to 490 conditions per place. [2024-06-03 19:26:13,525 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 97 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-03 19:26:13,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 112 transitions, 1299 flow [2024-06-03 19:26:13,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:13,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:13,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-03 19:26:13,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3185483870967742 [2024-06-03 19:26:13,526 INFO L175 Difference]: Start difference. First operand has 116 places, 101 transitions, 1039 flow. Second operand 8 states and 79 transitions. [2024-06-03 19:26:13,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 112 transitions, 1299 flow [2024-06-03 19:26:13,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 112 transitions, 1196 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:13,539 INFO L231 Difference]: Finished difference. Result has 118 places, 105 transitions, 1000 flow [2024-06-03 19:26:13,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1000, PETRI_PLACES=118, PETRI_TRANSITIONS=105} [2024-06-03 19:26:13,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-03 19:26:13,540 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 105 transitions, 1000 flow [2024-06-03 19:26:13,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:13,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:13,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:13,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 19:26:13,540 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 19:26:13,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:13,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1230526634, now seen corresponding path program 8 times [2024-06-03 19:26:13,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:13,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789493377] [2024-06-03 19:26:13,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:14,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789493377] [2024-06-03 19:26:14,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789493377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:14,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:14,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436231777] [2024-06-03 19:26:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:14,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:14,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 105 transitions, 1000 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:14,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:14,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:14,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:14,553 INFO L124 PetriNetUnfolderBase]: 305/543 cut-off events. [2024-06-03 19:26:14,553 INFO L125 PetriNetUnfolderBase]: For 10910/10910 co-relation queries the response was YES. [2024-06-03 19:26:14,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3354 conditions, 543 events. 305/543 cut-off events. For 10910/10910 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2185 event pairs, 81 based on Foata normal form. 2/542 useless extension candidates. Maximal degree in co-relation 3295. Up to 463 conditions per place. [2024-06-03 19:26:14,564 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 87 selfloop transitions, 30 changer transitions 0/119 dead transitions. [2024-06-03 19:26:14,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 119 transitions, 1394 flow [2024-06-03 19:26:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:14,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-03 19:26:14,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-03 19:26:14,566 INFO L175 Difference]: Start difference. First operand has 118 places, 105 transitions, 1000 flow. Second operand 8 states and 86 transitions. [2024-06-03 19:26:14,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 119 transitions, 1394 flow [2024-06-03 19:26:14,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 1355 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-03 19:26:14,579 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1118 flow [2024-06-03 19:26:14,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1118, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-06-03 19:26:14,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-03 19:26:14,580 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1118 flow [2024-06-03 19:26:14,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:14,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:14,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:14,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 19:26:14,581 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 19:26:14,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1237878067, now seen corresponding path program 4 times [2024-06-03 19:26:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:14,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505915878] [2024-06-03 19:26:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:14,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:15,282 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 19:26:15,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:15,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505915878] [2024-06-03 19:26:15,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505915878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:15,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:15,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:15,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954281088] [2024-06-03 19:26:15,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:15,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:15,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:15,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:15,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:15,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1118 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:15,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:15,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:15,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:15,502 INFO L124 PetriNetUnfolderBase]: 311/553 cut-off events. [2024-06-03 19:26:15,502 INFO L125 PetriNetUnfolderBase]: For 12144/12144 co-relation queries the response was YES. [2024-06-03 19:26:15,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 553 events. 311/553 cut-off events. For 12144/12144 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2250 event pairs, 81 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3454. Up to 506 conditions per place. [2024-06-03 19:26:15,507 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 97 selfloop transitions, 20 changer transitions 0/119 dead transitions. [2024-06-03 19:26:15,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 119 transitions, 1394 flow [2024-06-03 19:26:15,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-03 19:26:15,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-03 19:26:15,509 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1118 flow. Second operand 8 states and 82 transitions. [2024-06-03 19:26:15,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 119 transitions, 1394 flow [2024-06-03 19:26:15,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 119 transitions, 1330 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-03 19:26:15,525 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 1125 flow [2024-06-03 19:26:15,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1125, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-06-03 19:26:15,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-03 19:26:15,530 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 1125 flow [2024-06-03 19:26:15,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:15,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:15,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:15,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 19:26:15,530 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 19:26:15,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:15,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1230526417, now seen corresponding path program 5 times [2024-06-03 19:26:15,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:15,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659265971] [2024-06-03 19:26:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:15,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:16,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:16,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659265971] [2024-06-03 19:26:16,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659265971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:16,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:16,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233798171] [2024-06-03 19:26:16,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:16,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:16,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:16,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:16,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:16,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:16,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 1125 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:16,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:16,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:16,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:16,700 INFO L124 PetriNetUnfolderBase]: 309/550 cut-off events. [2024-06-03 19:26:16,701 INFO L125 PetriNetUnfolderBase]: For 11955/11955 co-relation queries the response was YES. [2024-06-03 19:26:16,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3512 conditions, 550 events. 309/550 cut-off events. For 11955/11955 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2238 event pairs, 80 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 3449. Up to 479 conditions per place. [2024-06-03 19:26:16,704 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 91 selfloop transitions, 31 changer transitions 0/124 dead transitions. [2024-06-03 19:26:16,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 124 transitions, 1442 flow [2024-06-03 19:26:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:16,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-03 19:26:16,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:26:16,705 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 1125 flow. Second operand 8 states and 84 transitions. [2024-06-03 19:26:16,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 124 transitions, 1442 flow [2024-06-03 19:26:16,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 1372 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:16,724 INFO L231 Difference]: Finished difference. Result has 129 places, 117 transitions, 1203 flow [2024-06-03 19:26:16,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1203, PETRI_PLACES=129, PETRI_TRANSITIONS=117} [2024-06-03 19:26:16,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-03 19:26:16,725 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 117 transitions, 1203 flow [2024-06-03 19:26:16,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:16,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:16,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 19:26:16,726 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 19:26:16,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1237883864, now seen corresponding path program 9 times [2024-06-03 19:26:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:16,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19699005] [2024-06-03 19:26:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:16,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19699005] [2024-06-03 19:26:17,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19699005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:17,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:17,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908367843] [2024-06-03 19:26:17,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:17,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:17,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:17,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:17,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:17,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:17,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 117 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:17,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:17,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:17,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:17,759 INFO L124 PetriNetUnfolderBase]: 310/550 cut-off events. [2024-06-03 19:26:17,759 INFO L125 PetriNetUnfolderBase]: For 12848/12848 co-relation queries the response was YES. [2024-06-03 19:26:17,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3602 conditions, 550 events. 310/550 cut-off events. For 12848/12848 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2230 event pairs, 50 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 3537. Up to 431 conditions per place. [2024-06-03 19:26:17,763 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 87 selfloop transitions, 40 changer transitions 0/129 dead transitions. [2024-06-03 19:26:17,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 129 transitions, 1533 flow [2024-06-03 19:26:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:26:17,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-03 19:26:17,774 INFO L175 Difference]: Start difference. First operand has 129 places, 117 transitions, 1203 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:26:17,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 129 transitions, 1533 flow [2024-06-03 19:26:17,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 129 transitions, 1488 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-03 19:26:17,791 INFO L231 Difference]: Finished difference. Result has 134 places, 119 transitions, 1295 flow [2024-06-03 19:26:17,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1295, PETRI_PLACES=134, PETRI_TRANSITIONS=119} [2024-06-03 19:26:17,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-03 19:26:17,792 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 119 transitions, 1295 flow [2024-06-03 19:26:17,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:17,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:17,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:17,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 19:26:17,792 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 19:26:17,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:17,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1237878284, now seen corresponding path program 10 times [2024-06-03 19:26:17,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257020679] [2024-06-03 19:26:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:18,426 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 19:26:18,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:18,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257020679] [2024-06-03 19:26:18,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257020679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:18,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:18,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:18,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803418653] [2024-06-03 19:26:18,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:18,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:18,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:18,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:18,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:18,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:18,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 119 transitions, 1295 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:18,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:18,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:18,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:18,686 INFO L124 PetriNetUnfolderBase]: 306/546 cut-off events. [2024-06-03 19:26:18,687 INFO L125 PetriNetUnfolderBase]: For 13005/13005 co-relation queries the response was YES. [2024-06-03 19:26:18,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 546 events. 306/546 cut-off events. For 13005/13005 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2216 event pairs, 81 based on Foata normal form. 2/545 useless extension candidates. Maximal degree in co-relation 3550. Up to 499 conditions per place. [2024-06-03 19:26:18,692 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 20 changer transitions 0/127 dead transitions. [2024-06-03 19:26:18,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 1565 flow [2024-06-03 19:26:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-03 19:26:18,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-03 19:26:18,694 INFO L175 Difference]: Start difference. First operand has 134 places, 119 transitions, 1295 flow. Second operand 8 states and 82 transitions. [2024-06-03 19:26:18,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 1565 flow [2024-06-03 19:26:18,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 127 transitions, 1422 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:18,715 INFO L231 Difference]: Finished difference. Result has 135 places, 119 transitions, 1197 flow [2024-06-03 19:26:18,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1197, PETRI_PLACES=135, PETRI_TRANSITIONS=119} [2024-06-03 19:26:18,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-03 19:26:18,716 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 119 transitions, 1197 flow [2024-06-03 19:26:18,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 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 19:26:18,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:18,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:18,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 19:26:18,717 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 19:26:18,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1230249587, now seen corresponding path program 1 times [2024-06-03 19:26:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:18,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094794877] [2024-06-03 19:26:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:19,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:19,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094794877] [2024-06-03 19:26:19,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094794877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:19,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:19,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:19,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783795253] [2024-06-03 19:26:19,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:19,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:19,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:19,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:19,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:19,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:19,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 119 transitions, 1197 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:19,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:19,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:19,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:20,099 INFO L124 PetriNetUnfolderBase]: 303/541 cut-off events. [2024-06-03 19:26:20,099 INFO L125 PetriNetUnfolderBase]: For 12431/12431 co-relation queries the response was YES. [2024-06-03 19:26:20,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3439 conditions, 541 events. 303/541 cut-off events. For 12431/12431 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2182 event pairs, 95 based on Foata normal form. 2/542 useless extension candidates. Maximal degree in co-relation 3371. Up to 508 conditions per place. [2024-06-03 19:26:20,102 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 112 selfloop transitions, 14 changer transitions 0/128 dead transitions. [2024-06-03 19:26:20,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 128 transitions, 1469 flow [2024-06-03 19:26:20,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-06-03 19:26:20,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30824372759856633 [2024-06-03 19:26:20,104 INFO L175 Difference]: Start difference. First operand has 135 places, 119 transitions, 1197 flow. Second operand 9 states and 86 transitions. [2024-06-03 19:26:20,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 128 transitions, 1469 flow [2024-06-03 19:26:20,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 128 transitions, 1401 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:20,121 INFO L231 Difference]: Finished difference. Result has 137 places, 119 transitions, 1161 flow [2024-06-03 19:26:20,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1161, PETRI_PLACES=137, PETRI_TRANSITIONS=119} [2024-06-03 19:26:20,121 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-03 19:26:20,122 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 119 transitions, 1161 flow [2024-06-03 19:26:20,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:20,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:20,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:20,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 19:26:20,122 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 19:26:20,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2024213711, now seen corresponding path program 1 times [2024-06-03 19:26:20,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:20,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209456464] [2024-06-03 19:26:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:20,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:20,850 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 19:26:20,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:20,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209456464] [2024-06-03 19:26:20,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209456464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:20,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:20,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:20,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061618997] [2024-06-03 19:26:20,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:20,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:20,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:20,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:20,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:20,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 119 transitions, 1161 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:20,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:20,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:20,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:21,205 INFO L124 PetriNetUnfolderBase]: 312/559 cut-off events. [2024-06-03 19:26:21,205 INFO L125 PetriNetUnfolderBase]: For 13049/13049 co-relation queries the response was YES. [2024-06-03 19:26:21,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 559 events. 312/559 cut-off events. For 13049/13049 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2314 event pairs, 48 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3424. Up to 465 conditions per place. [2024-06-03 19:26:21,210 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 113 selfloop transitions, 22 changer transitions 0/137 dead transitions. [2024-06-03 19:26:21,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 137 transitions, 1489 flow [2024-06-03 19:26:21,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-03 19:26:21,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-03 19:26:21,211 INFO L175 Difference]: Start difference. First operand has 137 places, 119 transitions, 1161 flow. Second operand 9 states and 94 transitions. [2024-06-03 19:26:21,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 137 transitions, 1489 flow [2024-06-03 19:26:21,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 137 transitions, 1436 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:26:21,237 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1176 flow [2024-06-03 19:26:21,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1176, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-06-03 19:26:21,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-03 19:26:21,238 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1176 flow [2024-06-03 19:26:21,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:21,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:21,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:21,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 19:26:21,239 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 19:26:21,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:21,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1119923773, now seen corresponding path program 2 times [2024-06-03 19:26:21,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:21,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413146859] [2024-06-03 19:26:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:21,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:22,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:22,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413146859] [2024-06-03 19:26:22,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413146859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:22,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:22,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:22,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544202009] [2024-06-03 19:26:22,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:22,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:22,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:22,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:22,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:22,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:22,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1176 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:22,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:22,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:22,416 INFO L124 PetriNetUnfolderBase]: 325/585 cut-off events. [2024-06-03 19:26:22,416 INFO L125 PetriNetUnfolderBase]: For 13776/13776 co-relation queries the response was YES. [2024-06-03 19:26:22,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3639 conditions, 585 events. 325/585 cut-off events. For 13776/13776 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2495 event pairs, 75 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 3571. Up to 507 conditions per place. [2024-06-03 19:26:22,420 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 115 selfloop transitions, 24 changer transitions 0/141 dead transitions. [2024-06-03 19:26:22,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 141 transitions, 1546 flow [2024-06-03 19:26:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:22,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:26:22,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 19:26:22,421 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1176 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:26:22,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 141 transitions, 1546 flow [2024-06-03 19:26:22,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 141 transitions, 1478 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:22,443 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 1216 flow [2024-06-03 19:26:22,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1216, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2024-06-03 19:26:22,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-03 19:26:22,444 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 1216 flow [2024-06-03 19:26:22,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:22,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:22,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 19:26:22,444 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 19:26:22,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1118058069, now seen corresponding path program 1 times [2024-06-03 19:26:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407708650] [2024-06-03 19:26:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407708650] [2024-06-03 19:26:23,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407708650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:23,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:23,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:23,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761881314] [2024-06-03 19:26:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:23,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:23,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:23,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:23,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:23,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 1216 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:23,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:23,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:23,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:23,682 INFO L124 PetriNetUnfolderBase]: 331/595 cut-off events. [2024-06-03 19:26:23,683 INFO L125 PetriNetUnfolderBase]: For 14573/14573 co-relation queries the response was YES. [2024-06-03 19:26:23,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3719 conditions, 595 events. 331/595 cut-off events. For 14573/14573 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2553 event pairs, 70 based on Foata normal form. 1/595 useless extension candidates. Maximal degree in co-relation 3650. Up to 515 conditions per place. [2024-06-03 19:26:23,686 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 112 selfloop transitions, 30 changer transitions 0/144 dead transitions. [2024-06-03 19:26:23,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 144 transitions, 1597 flow [2024-06-03 19:26:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:26:23,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-03 19:26:23,692 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 1216 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:26:23,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 144 transitions, 1597 flow [2024-06-03 19:26:23,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 144 transitions, 1535 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:23,716 INFO L231 Difference]: Finished difference. Result has 144 places, 129 transitions, 1291 flow [2024-06-03 19:26:23,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1291, PETRI_PLACES=144, PETRI_TRANSITIONS=129} [2024-06-03 19:26:23,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-03 19:26:23,717 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 129 transitions, 1291 flow [2024-06-03 19:26:23,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:23,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:23,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:23,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 19:26:23,717 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 19:26:23,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:23,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1118049823, now seen corresponding path program 3 times [2024-06-03 19:26:23,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:23,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853346909] [2024-06-03 19:26:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:23,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:24,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:24,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853346909] [2024-06-03 19:26:24,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853346909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:24,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:24,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:24,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898344273] [2024-06-03 19:26:24,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:24,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:24,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:24,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:24,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:24,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:24,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 129 transitions, 1291 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:24,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:24,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:24,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:24,690 INFO L124 PetriNetUnfolderBase]: 335/603 cut-off events. [2024-06-03 19:26:24,690 INFO L125 PetriNetUnfolderBase]: For 15795/15795 co-relation queries the response was YES. [2024-06-03 19:26:24,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 603 events. 335/603 cut-off events. For 15795/15795 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2599 event pairs, 73 based on Foata normal form. 2/604 useless extension candidates. Maximal degree in co-relation 3739. Up to 526 conditions per place. [2024-06-03 19:26:24,694 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 116 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-06-03 19:26:24,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 145 transitions, 1635 flow [2024-06-03 19:26:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:26:24,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 19:26:24,695 INFO L175 Difference]: Start difference. First operand has 144 places, 129 transitions, 1291 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:26:24,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 145 transitions, 1635 flow [2024-06-03 19:26:24,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 1563 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:24,733 INFO L231 Difference]: Finished difference. Result has 147 places, 130 transitions, 1298 flow [2024-06-03 19:26:24,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1298, PETRI_PLACES=147, PETRI_TRANSITIONS=130} [2024-06-03 19:26:24,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-03 19:26:24,733 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 130 transitions, 1298 flow [2024-06-03 19:26:24,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:24,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:24,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:24,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 19:26:24,734 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 19:26:24,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:24,734 INFO L85 PathProgramCache]: Analyzing trace with hash -81361905, now seen corresponding path program 1 times [2024-06-03 19:26:24,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:24,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695575442] [2024-06-03 19:26:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:24,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:25,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:25,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695575442] [2024-06-03 19:26:25,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695575442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:25,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:25,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:25,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976561964] [2024-06-03 19:26:25,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:25,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:25,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:25,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:25,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:25,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 130 transitions, 1298 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:25,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:25,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:25,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:25,826 INFO L124 PetriNetUnfolderBase]: 341/614 cut-off events. [2024-06-03 19:26:25,826 INFO L125 PetriNetUnfolderBase]: For 16873/16873 co-relation queries the response was YES. [2024-06-03 19:26:25,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 614 events. 341/614 cut-off events. For 16873/16873 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2665 event pairs, 55 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 3807. Up to 531 conditions per place. [2024-06-03 19:26:25,830 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 31 changer transitions 0/149 dead transitions. [2024-06-03 19:26:25,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 149 transitions, 1672 flow [2024-06-03 19:26:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:26:25,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:26:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:26:25,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:26:25,831 INFO L175 Difference]: Start difference. First operand has 147 places, 130 transitions, 1298 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:26:25,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 149 transitions, 1672 flow [2024-06-03 19:26:25,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 149 transitions, 1605 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:25,861 INFO L231 Difference]: Finished difference. Result has 150 places, 132 transitions, 1334 flow [2024-06-03 19:26:25,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1334, PETRI_PLACES=150, PETRI_TRANSITIONS=132} [2024-06-03 19:26:25,862 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-03 19:26:25,862 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 132 transitions, 1334 flow [2024-06-03 19:26:25,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:25,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:25,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:25,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 19:26:25,862 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 19:26:25,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1082716087, now seen corresponding path program 4 times [2024-06-03 19:26:25,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:25,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189837704] [2024-06-03 19:26:25,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:25,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:26,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:26,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189837704] [2024-06-03 19:26:26,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189837704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:26,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:26,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:26,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637693737] [2024-06-03 19:26:26,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:26,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:26,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:26,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:26,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:26,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:26,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 132 transitions, 1334 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:26,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:26,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:26,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:26,875 INFO L124 PetriNetUnfolderBase]: 350/632 cut-off events. [2024-06-03 19:26:26,876 INFO L125 PetriNetUnfolderBase]: For 17782/17782 co-relation queries the response was YES. [2024-06-03 19:26:26,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 632 events. 350/632 cut-off events. For 17782/17782 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2782 event pairs, 53 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 3936. Up to 554 conditions per place. [2024-06-03 19:26:26,880 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 124 selfloop transitions, 23 changer transitions 0/149 dead transitions. [2024-06-03 19:26:26,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 149 transitions, 1694 flow [2024-06-03 19:26:26,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:26:26,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-03 19:26:26,882 INFO L175 Difference]: Start difference. First operand has 150 places, 132 transitions, 1334 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:26:26,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 149 transitions, 1694 flow [2024-06-03 19:26:26,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 149 transitions, 1607 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:26:26,913 INFO L231 Difference]: Finished difference. Result has 152 places, 134 transitions, 1329 flow [2024-06-03 19:26:26,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1329, PETRI_PLACES=152, PETRI_TRANSITIONS=134} [2024-06-03 19:26:26,914 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-03 19:26:26,914 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 134 transitions, 1329 flow [2024-06-03 19:26:26,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:26,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:26,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:26,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 19:26:26,915 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 19:26:26,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1136424781, now seen corresponding path program 5 times [2024-06-03 19:26:26,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:26,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647618113] [2024-06-03 19:26:26,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:26,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:27,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:27,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647618113] [2024-06-03 19:26:27,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647618113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:27,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:27,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:27,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391825088] [2024-06-03 19:26:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:27,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:27,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:27,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:27,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 134 transitions, 1329 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:27,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:27,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:27,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:28,078 INFO L124 PetriNetUnfolderBase]: 354/640 cut-off events. [2024-06-03 19:26:28,078 INFO L125 PetriNetUnfolderBase]: For 18874/18874 co-relation queries the response was YES. [2024-06-03 19:26:28,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 640 events. 354/640 cut-off events. For 18874/18874 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2849 event pairs, 53 based on Foata normal form. 2/641 useless extension candidates. Maximal degree in co-relation 3985. Up to 563 conditions per place. [2024-06-03 19:26:28,082 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 122 selfloop transitions, 26 changer transitions 0/150 dead transitions. [2024-06-03 19:26:28,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 150 transitions, 1694 flow [2024-06-03 19:26:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:28,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:26:28,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-03 19:26:28,084 INFO L175 Difference]: Start difference. First operand has 152 places, 134 transitions, 1329 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:26:28,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 150 transitions, 1694 flow [2024-06-03 19:26:28,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 150 transitions, 1636 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-03 19:26:28,119 INFO L231 Difference]: Finished difference. Result has 157 places, 136 transitions, 1369 flow [2024-06-03 19:26:28,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1369, PETRI_PLACES=157, PETRI_TRANSITIONS=136} [2024-06-03 19:26:28,120 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-03 19:26:28,120 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 136 transitions, 1369 flow [2024-06-03 19:26:28,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:28,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:28,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:28,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 19:26:28,121 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 19:26:28,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:28,121 INFO L85 PathProgramCache]: Analyzing trace with hash -165235709, now seen corresponding path program 2 times [2024-06-03 19:26:28,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:28,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361804526] [2024-06-03 19:26:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:28,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:28,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:28,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361804526] [2024-06-03 19:26:28,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361804526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:28,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:28,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:28,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588045030] [2024-06-03 19:26:28,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:28,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:28,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:28,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:28,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:29,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:29,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 136 transitions, 1369 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:29,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:29,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:29,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:29,308 INFO L124 PetriNetUnfolderBase]: 352/637 cut-off events. [2024-06-03 19:26:29,309 INFO L125 PetriNetUnfolderBase]: For 18518/18518 co-relation queries the response was YES. [2024-06-03 19:26:29,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 637 events. 352/637 cut-off events. For 18518/18518 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2828 event pairs, 53 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 3946. Up to 557 conditions per place. [2024-06-03 19:26:29,313 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2024-06-03 19:26:29,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 150 transitions, 1705 flow [2024-06-03 19:26:29,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 19:26:29,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 19:26:29,314 INFO L175 Difference]: Start difference. First operand has 157 places, 136 transitions, 1369 flow. Second operand 9 states and 99 transitions. [2024-06-03 19:26:29,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 150 transitions, 1705 flow [2024-06-03 19:26:29,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 150 transitions, 1626 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:29,356 INFO L231 Difference]: Finished difference. Result has 160 places, 136 transitions, 1356 flow [2024-06-03 19:26:29,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1356, PETRI_PLACES=160, PETRI_TRANSITIONS=136} [2024-06-03 19:26:29,356 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-03 19:26:29,356 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 136 transitions, 1356 flow [2024-06-03 19:26:29,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:29,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:29,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:29,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 19:26:29,357 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 19:26:29,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:29,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1133623311, now seen corresponding path program 2 times [2024-06-03 19:26:29,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:29,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100097583] [2024-06-03 19:26:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:29,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:30,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:30,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100097583] [2024-06-03 19:26:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100097583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:30,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:30,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:30,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635193805] [2024-06-03 19:26:30,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:30,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:30,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:30,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:30,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:30,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 136 transitions, 1356 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:30,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:30,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:30,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:30,472 INFO L124 PetriNetUnfolderBase]: 358/648 cut-off events. [2024-06-03 19:26:30,473 INFO L125 PetriNetUnfolderBase]: For 20015/20015 co-relation queries the response was YES. [2024-06-03 19:26:30,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4074 conditions, 648 events. 358/648 cut-off events. For 20015/20015 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2902 event pairs, 55 based on Foata normal form. 2/649 useless extension candidates. Maximal degree in co-relation 3997. Up to 565 conditions per place. [2024-06-03 19:26:30,477 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 124 selfloop transitions, 28 changer transitions 0/154 dead transitions. [2024-06-03 19:26:30,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 154 transitions, 1742 flow [2024-06-03 19:26:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:26:30,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:26:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 19:26:30,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-03 19:26:30,499 INFO L175 Difference]: Start difference. First operand has 160 places, 136 transitions, 1356 flow. Second operand 10 states and 107 transitions. [2024-06-03 19:26:30,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 154 transitions, 1742 flow [2024-06-03 19:26:30,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 1646 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:26:30,538 INFO L231 Difference]: Finished difference. Result has 162 places, 138 transitions, 1361 flow [2024-06-03 19:26:30,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1361, PETRI_PLACES=162, PETRI_TRANSITIONS=138} [2024-06-03 19:26:30,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-03 19:26:30,538 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 138 transitions, 1361 flow [2024-06-03 19:26:30,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:30,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:30,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:30,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 19:26:30,539 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 19:26:30,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:30,539 INFO L85 PathProgramCache]: Analyzing trace with hash -160651863, now seen corresponding path program 6 times [2024-06-03 19:26:30,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:30,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182512713] [2024-06-03 19:26:30,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:30,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:31,333 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 19:26:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:31,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182512713] [2024-06-03 19:26:31,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182512713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:31,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:31,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:31,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528754964] [2024-06-03 19:26:31,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:31,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:31,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:31,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:31,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 138 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:31,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:31,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:31,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:31,635 INFO L124 PetriNetUnfolderBase]: 362/656 cut-off events. [2024-06-03 19:26:31,635 INFO L125 PetriNetUnfolderBase]: For 20090/20090 co-relation queries the response was YES. [2024-06-03 19:26:31,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 656 events. 362/656 cut-off events. For 20090/20090 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2949 event pairs, 53 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4045. Up to 562 conditions per place. [2024-06-03 19:26:31,640 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 118 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2024-06-03 19:26:31,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 153 transitions, 1725 flow [2024-06-03 19:26:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:26:31,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-03 19:26:31,641 INFO L175 Difference]: Start difference. First operand has 162 places, 138 transitions, 1361 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:26:31,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 153 transitions, 1725 flow [2024-06-03 19:26:31,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 1635 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-03 19:26:31,681 INFO L231 Difference]: Finished difference. Result has 162 places, 139 transitions, 1367 flow [2024-06-03 19:26:31,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1367, PETRI_PLACES=162, PETRI_TRANSITIONS=139} [2024-06-03 19:26:31,682 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-03 19:26:31,682 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 139 transitions, 1367 flow [2024-06-03 19:26:31,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:31,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:31,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:31,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 19:26:31,687 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 19:26:31,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1793500217, now seen corresponding path program 3 times [2024-06-03 19:26:31,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:31,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152585636] [2024-06-03 19:26:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:31,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:32,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152585636] [2024-06-03 19:26:32,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152585636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:32,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:32,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:32,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867277831] [2024-06-03 19:26:32,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:32,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:32,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:32,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:32,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:32,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:32,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 139 transitions, 1367 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:32,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:32,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:32,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:32,723 INFO L124 PetriNetUnfolderBase]: 368/666 cut-off events. [2024-06-03 19:26:32,723 INFO L125 PetriNetUnfolderBase]: For 21108/21108 co-relation queries the response was YES. [2024-06-03 19:26:32,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 666 events. 368/666 cut-off events. For 21108/21108 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3001 event pairs, 53 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 4109. Up to 562 conditions per place. [2024-06-03 19:26:32,728 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 36 changer transitions 0/157 dead transitions. [2024-06-03 19:26:32,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 157 transitions, 1761 flow [2024-06-03 19:26:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:26:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:26:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 19:26:32,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-03 19:26:32,729 INFO L175 Difference]: Start difference. First operand has 162 places, 139 transitions, 1367 flow. Second operand 10 states and 108 transitions. [2024-06-03 19:26:32,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 157 transitions, 1761 flow [2024-06-03 19:26:32,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 157 transitions, 1672 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:32,768 INFO L231 Difference]: Finished difference. Result has 165 places, 141 transitions, 1397 flow [2024-06-03 19:26:32,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1397, PETRI_PLACES=165, PETRI_TRANSITIONS=141} [2024-06-03 19:26:32,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-03 19:26:32,769 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 141 transitions, 1397 flow [2024-06-03 19:26:32,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:32,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:32,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 19:26:32,769 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 19:26:32,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1793679707, now seen corresponding path program 4 times [2024-06-03 19:26:32,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:32,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475222684] [2024-06-03 19:26:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:33,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475222684] [2024-06-03 19:26:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475222684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:33,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:33,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553326557] [2024-06-03 19:26:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:33,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:33,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:33,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:33,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:33,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 141 transitions, 1397 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:33,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:33,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:33,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:33,602 INFO L124 PetriNetUnfolderBase]: 400/717 cut-off events. [2024-06-03 19:26:33,602 INFO L125 PetriNetUnfolderBase]: For 26988/26988 co-relation queries the response was YES. [2024-06-03 19:26:33,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 717 events. 400/717 cut-off events. For 26988/26988 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3283 event pairs, 94 based on Foata normal form. 4/720 useless extension candidates. Maximal degree in co-relation 4619. Up to 634 conditions per place. [2024-06-03 19:26:33,608 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 24 changer transitions 0/164 dead transitions. [2024-06-03 19:26:33,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 164 transitions, 1950 flow [2024-06-03 19:26:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:26:33,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:26:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 19:26:33,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-03 19:26:33,609 INFO L175 Difference]: Start difference. First operand has 165 places, 141 transitions, 1397 flow. Second operand 10 states and 107 transitions. [2024-06-03 19:26:33,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 164 transitions, 1950 flow [2024-06-03 19:26:33,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 164 transitions, 1847 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 19:26:33,656 INFO L231 Difference]: Finished difference. Result has 167 places, 146 transitions, 1445 flow [2024-06-03 19:26:33,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1445, PETRI_PLACES=167, PETRI_TRANSITIONS=146} [2024-06-03 19:26:33,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-03 19:26:33,656 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 146 transitions, 1445 flow [2024-06-03 19:26:33,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:33,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:33,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:33,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 19:26:33,657 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 19:26:33,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:33,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1793673197, now seen corresponding path program 5 times [2024-06-03 19:26:33,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:33,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217057860] [2024-06-03 19:26:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:33,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:34,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:34,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:34,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217057860] [2024-06-03 19:26:34,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217057860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:34,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:34,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:34,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906273508] [2024-06-03 19:26:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:34,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:34,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:34,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 146 transitions, 1445 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:34,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:34,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:34,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:34,745 INFO L124 PetriNetUnfolderBase]: 396/711 cut-off events. [2024-06-03 19:26:34,745 INFO L125 PetriNetUnfolderBase]: For 24837/24837 co-relation queries the response was YES. [2024-06-03 19:26:34,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 711 events. 396/711 cut-off events. For 24837/24837 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3248 event pairs, 94 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 4535. Up to 633 conditions per place. [2024-06-03 19:26:34,750 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 26 changer transitions 0/165 dead transitions. [2024-06-03 19:26:34,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 165 transitions, 1948 flow [2024-06-03 19:26:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:26:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:26:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 19:26:34,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-03 19:26:34,752 INFO L175 Difference]: Start difference. First operand has 167 places, 146 transitions, 1445 flow. Second operand 10 states and 108 transitions. [2024-06-03 19:26:34,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 165 transitions, 1948 flow [2024-06-03 19:26:34,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 165 transitions, 1870 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:34,798 INFO L231 Difference]: Finished difference. Result has 171 places, 148 transitions, 1472 flow [2024-06-03 19:26:34,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1472, PETRI_PLACES=171, PETRI_TRANSITIONS=148} [2024-06-03 19:26:34,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-03 19:26:34,798 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 148 transitions, 1472 flow [2024-06-03 19:26:34,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:34,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:34,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:34,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 19:26:34,799 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 19:26:34,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:34,799 INFO L85 PathProgramCache]: Analyzing trace with hash 720903653, now seen corresponding path program 7 times [2024-06-03 19:26:34,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:34,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086155315] [2024-06-03 19:26:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:34,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:35,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:35,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086155315] [2024-06-03 19:26:35,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086155315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:35,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:35,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:35,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417284058] [2024-06-03 19:26:35,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:35,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:35,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:35,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:35,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:35,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:35,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 148 transitions, 1472 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:35,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:35,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:35,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:35,925 INFO L124 PetriNetUnfolderBase]: 400/719 cut-off events. [2024-06-03 19:26:35,926 INFO L125 PetriNetUnfolderBase]: For 25806/25806 co-relation queries the response was YES. [2024-06-03 19:26:35,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4677 conditions, 719 events. 400/719 cut-off events. For 25806/25806 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3292 event pairs, 64 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4595. Up to 582 conditions per place. [2024-06-03 19:26:35,932 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 132 selfloop transitions, 28 changer transitions 0/162 dead transitions. [2024-06-03 19:26:35,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 162 transitions, 1850 flow [2024-06-03 19:26:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-03 19:26:35,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34274193548387094 [2024-06-03 19:26:35,933 INFO L175 Difference]: Start difference. First operand has 171 places, 148 transitions, 1472 flow. Second operand 8 states and 85 transitions. [2024-06-03 19:26:35,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 162 transitions, 1850 flow [2024-06-03 19:26:35,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 162 transitions, 1776 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:35,998 INFO L231 Difference]: Finished difference. Result has 172 places, 149 transitions, 1492 flow [2024-06-03 19:26:35,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1492, PETRI_PLACES=172, PETRI_TRANSITIONS=149} [2024-06-03 19:26:35,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-03 19:26:35,999 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 149 transitions, 1492 flow [2024-06-03 19:26:35,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:35,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:35,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:35,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 19:26:35,999 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 19:26:35,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:35,999 INFO L85 PathProgramCache]: Analyzing trace with hash 720964103, now seen corresponding path program 8 times [2024-06-03 19:26:36,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:36,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193489148] [2024-06-03 19:26:36,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:36,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:36,887 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 19:26:36,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:36,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193489148] [2024-06-03 19:26:36,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193489148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:36,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:36,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:36,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186591060] [2024-06-03 19:26:36,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:36,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:36,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:36,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:36,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:36,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:36,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 149 transitions, 1492 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:36,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:36,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:36,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:37,277 INFO L124 PetriNetUnfolderBase]: 404/727 cut-off events. [2024-06-03 19:26:37,278 INFO L125 PetriNetUnfolderBase]: For 27270/27270 co-relation queries the response was YES. [2024-06-03 19:26:37,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 727 events. 404/727 cut-off events. For 27270/27270 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3340 event pairs, 78 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4690. Up to 616 conditions per place. [2024-06-03 19:26:37,283 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 126 selfloop transitions, 35 changer transitions 0/163 dead transitions. [2024-06-03 19:26:37,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 163 transitions, 1876 flow [2024-06-03 19:26:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-03 19:26:37,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-03 19:26:37,284 INFO L175 Difference]: Start difference. First operand has 172 places, 149 transitions, 1492 flow. Second operand 8 states and 87 transitions. [2024-06-03 19:26:37,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 163 transitions, 1876 flow [2024-06-03 19:26:37,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 163 transitions, 1792 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:37,342 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 1519 flow [2024-06-03 19:26:37,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1519, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2024-06-03 19:26:37,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-03 19:26:37,342 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 1519 flow [2024-06-03 19:26:37,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:37,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:37,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:37,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-03 19:26:37,343 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 19:26:37,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash 720964227, now seen corresponding path program 3 times [2024-06-03 19:26:37,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:37,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873514825] [2024-06-03 19:26:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:37,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873514825] [2024-06-03 19:26:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873514825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:38,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:38,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:38,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015918397] [2024-06-03 19:26:38,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:38,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:38,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:38,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:38,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:38,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:38,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 1519 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:38,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:38,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:38,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:38,375 INFO L124 PetriNetUnfolderBase]: 402/724 cut-off events. [2024-06-03 19:26:38,375 INFO L125 PetriNetUnfolderBase]: For 23220/23220 co-relation queries the response was YES. [2024-06-03 19:26:38,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 724 events. 402/724 cut-off events. For 23220/23220 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3330 event pairs, 76 based on Foata normal form. 1/724 useless extension candidates. Maximal degree in co-relation 4544. Up to 604 conditions per place. [2024-06-03 19:26:38,381 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 119 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-03 19:26:38,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 165 transitions, 1937 flow [2024-06-03 19:26:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-03 19:26:38,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 19:26:38,383 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 1519 flow. Second operand 8 states and 88 transitions. [2024-06-03 19:26:38,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 165 transitions, 1937 flow [2024-06-03 19:26:38,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 165 transitions, 1852 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:38,433 INFO L231 Difference]: Finished difference. Result has 176 places, 152 transitions, 1602 flow [2024-06-03 19:26:38,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1602, PETRI_PLACES=176, PETRI_TRANSITIONS=152} [2024-06-03 19:26:38,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-03 19:26:38,433 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 152 transitions, 1602 flow [2024-06-03 19:26:38,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:38,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:38,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:38,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-03 19:26:38,434 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 19:26:38,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1740316793, now seen corresponding path program 6 times [2024-06-03 19:26:38,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:38,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954952904] [2024-06-03 19:26:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:39,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:39,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954952904] [2024-06-03 19:26:39,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954952904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:39,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:39,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:39,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341898587] [2024-06-03 19:26:39,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:39,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:39,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:39,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:39,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:39,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 152 transitions, 1602 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:39,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:39,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:39,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:39,458 INFO L124 PetriNetUnfolderBase]: 408/735 cut-off events. [2024-06-03 19:26:39,458 INFO L125 PetriNetUnfolderBase]: For 23059/23059 co-relation queries the response was YES. [2024-06-03 19:26:39,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4719 conditions, 735 events. 408/735 cut-off events. For 23059/23059 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3388 event pairs, 60 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4634. Up to 608 conditions per place. [2024-06-03 19:26:39,464 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 42 changer transitions 0/169 dead transitions. [2024-06-03 19:26:39,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 169 transitions, 2028 flow [2024-06-03 19:26:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:26:39,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 19:26:39,465 INFO L175 Difference]: Start difference. First operand has 176 places, 152 transitions, 1602 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:26:39,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 169 transitions, 2028 flow [2024-06-03 19:26:39,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 169 transitions, 1906 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-03 19:26:39,514 INFO L231 Difference]: Finished difference. Result has 177 places, 154 transitions, 1629 flow [2024-06-03 19:26:39,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1629, PETRI_PLACES=177, PETRI_TRANSITIONS=154} [2024-06-03 19:26:39,515 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-03 19:26:39,515 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 154 transitions, 1629 flow [2024-06-03 19:26:39,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:39,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:39,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:39,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-03 19:26:39,516 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 19:26:39,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:39,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1855780943, now seen corresponding path program 7 times [2024-06-03 19:26:39,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:39,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515348080] [2024-06-03 19:26:39,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:39,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:40,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:40,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515348080] [2024-06-03 19:26:40,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515348080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:40,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:40,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:40,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859124118] [2024-06-03 19:26:40,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:40,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:40,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:40,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:40,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:40,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 154 transitions, 1629 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:40,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:40,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:40,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:40,462 INFO L124 PetriNetUnfolderBase]: 444/792 cut-off events. [2024-06-03 19:26:40,463 INFO L125 PetriNetUnfolderBase]: For 27066/27066 co-relation queries the response was YES. [2024-06-03 19:26:40,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5372 conditions, 792 events. 444/792 cut-off events. For 27066/27066 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3707 event pairs, 98 based on Foata normal form. 2/793 useless extension candidates. Maximal degree in co-relation 5288. Up to 653 conditions per place. [2024-06-03 19:26:40,468 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 40 changer transitions 0/177 dead transitions. [2024-06-03 19:26:40,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 177 transitions, 2344 flow [2024-06-03 19:26:40,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:40,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-03 19:26:40,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-03 19:26:40,469 INFO L175 Difference]: Start difference. First operand has 177 places, 154 transitions, 1629 flow. Second operand 9 states and 100 transitions. [2024-06-03 19:26:40,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 177 transitions, 2344 flow [2024-06-03 19:26:40,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 177 transitions, 2231 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:40,521 INFO L231 Difference]: Finished difference. Result has 179 places, 161 transitions, 1776 flow [2024-06-03 19:26:40,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1776, PETRI_PLACES=179, PETRI_TRANSITIONS=161} [2024-06-03 19:26:40,522 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-03 19:26:40,522 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 161 transitions, 1776 flow [2024-06-03 19:26:40,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:40,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:40,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:40,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-03 19:26:40,523 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 19:26:40,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:40,523 INFO L85 PathProgramCache]: Analyzing trace with hash 839236233, now seen corresponding path program 8 times [2024-06-03 19:26:40,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:40,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526970816] [2024-06-03 19:26:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:40,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:41,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526970816] [2024-06-03 19:26:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526970816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:41,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:41,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:41,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524652569] [2024-06-03 19:26:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:41,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:41,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:41,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:41,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 161 transitions, 1776 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:41,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:41,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:41,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:41,412 INFO L124 PetriNetUnfolderBase]: 436/780 cut-off events. [2024-06-03 19:26:41,413 INFO L125 PetriNetUnfolderBase]: For 26726/26726 co-relation queries the response was YES. [2024-06-03 19:26:41,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5183 conditions, 780 events. 436/780 cut-off events. For 26726/26726 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3644 event pairs, 96 based on Foata normal form. 4/783 useless extension candidates. Maximal degree in co-relation 5098. Up to 649 conditions per place. [2024-06-03 19:26:41,418 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 38 changer transitions 0/176 dead transitions. [2024-06-03 19:26:41,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 176 transitions, 2247 flow [2024-06-03 19:26:41,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:41,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-03 19:26:41,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-03 19:26:41,419 INFO L175 Difference]: Start difference. First operand has 179 places, 161 transitions, 1776 flow. Second operand 9 states and 98 transitions. [2024-06-03 19:26:41,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 176 transitions, 2247 flow [2024-06-03 19:26:41,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 2130 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-03 19:26:41,477 INFO L231 Difference]: Finished difference. Result has 184 places, 161 transitions, 1747 flow [2024-06-03 19:26:41,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1747, PETRI_PLACES=184, PETRI_TRANSITIONS=161} [2024-06-03 19:26:41,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-03 19:26:41,478 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 161 transitions, 1747 flow [2024-06-03 19:26:41,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:41,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:41,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:41,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-03 19:26:41,479 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 19:26:41,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:41,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1855603003, now seen corresponding path program 9 times [2024-06-03 19:26:41,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:41,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612732562] [2024-06-03 19:26:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:41,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:42,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612732562] [2024-06-03 19:26:42,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612732562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:42,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:42,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:42,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624802987] [2024-06-03 19:26:42,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:42,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:42,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:42,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:42,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:42,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:42,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 161 transitions, 1747 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:42,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:42,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:42,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:42,515 INFO L124 PetriNetUnfolderBase]: 440/789 cut-off events. [2024-06-03 19:26:42,515 INFO L125 PetriNetUnfolderBase]: For 25930/25930 co-relation queries the response was YES. [2024-06-03 19:26:42,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 789 events. 440/789 cut-off events. For 25930/25930 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3693 event pairs, 59 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 5114. Up to 671 conditions per place. [2024-06-03 19:26:42,521 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 133 selfloop transitions, 39 changer transitions 0/174 dead transitions. [2024-06-03 19:26:42,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 174 transitions, 2143 flow [2024-06-03 19:26:42,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-03 19:26:42,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-03 19:26:42,523 INFO L175 Difference]: Start difference. First operand has 184 places, 161 transitions, 1747 flow. Second operand 8 states and 87 transitions. [2024-06-03 19:26:42,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 174 transitions, 2143 flow [2024-06-03 19:26:42,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 174 transitions, 2069 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:42,577 INFO L231 Difference]: Finished difference. Result has 185 places, 162 transitions, 1779 flow [2024-06-03 19:26:42,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1779, PETRI_PLACES=185, PETRI_TRANSITIONS=162} [2024-06-03 19:26:42,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-03 19:26:42,587 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 162 transitions, 1779 flow [2024-06-03 19:26:42,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:42,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:42,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:42,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-03 19:26:42,587 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 19:26:42,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:42,588 INFO L85 PathProgramCache]: Analyzing trace with hash 205816225, now seen corresponding path program 9 times [2024-06-03 19:26:42,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:42,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906067003] [2024-06-03 19:26:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:43,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:43,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906067003] [2024-06-03 19:26:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906067003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:43,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:43,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:43,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857645736] [2024-06-03 19:26:43,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:43,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:43,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:43,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 162 transitions, 1779 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:43,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:43,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:43,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:43,659 INFO L124 PetriNetUnfolderBase]: 446/799 cut-off events. [2024-06-03 19:26:43,659 INFO L125 PetriNetUnfolderBase]: For 27357/27357 co-relation queries the response was YES. [2024-06-03 19:26:43,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5322 conditions, 799 events. 446/799 cut-off events. For 27357/27357 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3751 event pairs, 59 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 5234. Up to 661 conditions per place. [2024-06-03 19:26:43,665 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 131 selfloop transitions, 45 changer transitions 0/178 dead transitions. [2024-06-03 19:26:43,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 178 transitions, 2227 flow [2024-06-03 19:26:43,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:43,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:43,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:26:43,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 19:26:43,666 INFO L175 Difference]: Start difference. First operand has 185 places, 162 transitions, 1779 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:26:43,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 178 transitions, 2227 flow [2024-06-03 19:26:43,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 178 transitions, 2133 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:43,728 INFO L231 Difference]: Finished difference. Result has 188 places, 164 transitions, 1843 flow [2024-06-03 19:26:43,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1843, PETRI_PLACES=188, PETRI_TRANSITIONS=164} [2024-06-03 19:26:43,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-03 19:26:43,729 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 164 transitions, 1843 flow [2024-06-03 19:26:43,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:43,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:43,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:43,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-03 19:26:43,730 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 19:26:43,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:43,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1004868857, now seen corresponding path program 10 times [2024-06-03 19:26:43,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:43,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199169545] [2024-06-03 19:26:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:43,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:44,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:44,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199169545] [2024-06-03 19:26:44,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199169545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:44,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:44,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:44,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496915332] [2024-06-03 19:26:44,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:44,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:44,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:44,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:44,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:44,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 164 transitions, 1843 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:44,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:44,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:44,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:44,835 INFO L124 PetriNetUnfolderBase]: 482/857 cut-off events. [2024-06-03 19:26:44,835 INFO L125 PetriNetUnfolderBase]: For 33422/33422 co-relation queries the response was YES. [2024-06-03 19:26:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6061 conditions, 857 events. 482/857 cut-off events. For 33422/33422 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4069 event pairs, 113 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5972. Up to 761 conditions per place. [2024-06-03 19:26:44,842 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 29 changer transitions 0/185 dead transitions. [2024-06-03 19:26:44,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 185 transitions, 2594 flow [2024-06-03 19:26:44,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-03 19:26:44,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 19:26:44,843 INFO L175 Difference]: Start difference. First operand has 188 places, 164 transitions, 1843 flow. Second operand 9 states and 99 transitions. [2024-06-03 19:26:44,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 185 transitions, 2594 flow [2024-06-03 19:26:44,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 185 transitions, 2462 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:44,924 INFO L231 Difference]: Finished difference. Result has 190 places, 171 transitions, 1960 flow [2024-06-03 19:26:44,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1960, PETRI_PLACES=190, PETRI_TRANSITIONS=171} [2024-06-03 19:26:44,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-03 19:26:44,925 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 171 transitions, 1960 flow [2024-06-03 19:26:44,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:44,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:44,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:44,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-03 19:26:44,925 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 19:26:44,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:44,926 INFO L85 PathProgramCache]: Analyzing trace with hash -117720781, now seen corresponding path program 11 times [2024-06-03 19:26:44,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:44,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478995084] [2024-06-03 19:26:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:44,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:45,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:45,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478995084] [2024-06-03 19:26:45,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478995084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:45,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:45,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809106345] [2024-06-03 19:26:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:45,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:45,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:45,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:45,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:45,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 171 transitions, 1960 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:45,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:45,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:45,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:45,964 INFO L124 PetriNetUnfolderBase]: 474/845 cut-off events. [2024-06-03 19:26:45,964 INFO L125 PetriNetUnfolderBase]: For 32772/32772 co-relation queries the response was YES. [2024-06-03 19:26:45,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5791 conditions, 845 events. 474/845 cut-off events. For 32772/32772 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4011 event pairs, 111 based on Foata normal form. 4/846 useless extension candidates. Maximal degree in co-relation 5701. Up to 757 conditions per place. [2024-06-03 19:26:45,971 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 28 changer transitions 0/184 dead transitions. [2024-06-03 19:26:45,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 184 transitions, 2447 flow [2024-06-03 19:26:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-03 19:26:45,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-03 19:26:45,972 INFO L175 Difference]: Start difference. First operand has 190 places, 171 transitions, 1960 flow. Second operand 9 states and 97 transitions. [2024-06-03 19:26:45,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 184 transitions, 2447 flow [2024-06-03 19:26:46,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 184 transitions, 2300 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-03 19:26:46,044 INFO L231 Difference]: Finished difference. Result has 195 places, 171 transitions, 1876 flow [2024-06-03 19:26:46,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1876, PETRI_PLACES=195, PETRI_TRANSITIONS=171} [2024-06-03 19:26:46,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-03 19:26:46,044 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 171 transitions, 1876 flow [2024-06-03 19:26:46,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:46,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:46,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:46,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-03 19:26:46,045 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 19:26:46,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:46,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1011131477, now seen corresponding path program 12 times [2024-06-03 19:26:46,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:46,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613068023] [2024-06-03 19:26:46,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:46,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:46,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:46,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:46,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613068023] [2024-06-03 19:26:46,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613068023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:46,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:46,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:46,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710800138] [2024-06-03 19:26:46,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:46,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:46,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:46,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:46,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:46,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 171 transitions, 1876 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:46,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:46,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:46,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:47,128 INFO L124 PetriNetUnfolderBase]: 533/941 cut-off events. [2024-06-03 19:26:47,128 INFO L125 PetriNetUnfolderBase]: For 43709/43709 co-relation queries the response was YES. [2024-06-03 19:26:47,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6908 conditions, 941 events. 533/941 cut-off events. For 43709/43709 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4535 event pairs, 119 based on Foata normal form. 4/942 useless extension candidates. Maximal degree in co-relation 6816. Up to 652 conditions per place. [2024-06-03 19:26:47,135 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 143 selfloop transitions, 52 changer transitions 0/197 dead transitions. [2024-06-03 19:26:47,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 197 transitions, 2832 flow [2024-06-03 19:26:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:47,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-03 19:26:47,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-03 19:26:47,138 INFO L175 Difference]: Start difference. First operand has 195 places, 171 transitions, 1876 flow. Second operand 9 states and 106 transitions. [2024-06-03 19:26:47,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 197 transitions, 2832 flow [2024-06-03 19:26:47,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 197 transitions, 2778 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:47,210 INFO L231 Difference]: Finished difference. Result has 198 places, 179 transitions, 2152 flow [2024-06-03 19:26:47,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2152, PETRI_PLACES=198, PETRI_TRANSITIONS=179} [2024-06-03 19:26:47,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-03 19:26:47,211 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 179 transitions, 2152 flow [2024-06-03 19:26:47,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:47,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:47,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:47,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-03 19:26:47,211 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 19:26:47,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash 508387731, now seen corresponding path program 1 times [2024-06-03 19:26:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:47,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795663353] [2024-06-03 19:26:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:48,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795663353] [2024-06-03 19:26:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795663353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:48,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699698060] [2024-06-03 19:26:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:48,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:48,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:48,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:48,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 179 transitions, 2152 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:48,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:48,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:48,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:48,510 INFO L124 PetriNetUnfolderBase]: 529/934 cut-off events. [2024-06-03 19:26:48,510 INFO L125 PetriNetUnfolderBase]: For 42435/42435 co-relation queries the response was YES. [2024-06-03 19:26:48,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7024 conditions, 934 events. 529/934 cut-off events. For 42435/42435 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4496 event pairs, 125 based on Foata normal form. 1/932 useless extension candidates. Maximal degree in co-relation 6930. Up to 860 conditions per place. [2024-06-03 19:26:48,518 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2024-06-03 19:26:48,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 188 transitions, 2557 flow [2024-06-03 19:26:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-03 19:26:48,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32974910394265233 [2024-06-03 19:26:48,521 INFO L175 Difference]: Start difference. First operand has 198 places, 179 transitions, 2152 flow. Second operand 9 states and 92 transitions. [2024-06-03 19:26:48,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 188 transitions, 2557 flow [2024-06-03 19:26:48,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 188 transitions, 2427 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-03 19:26:48,615 INFO L231 Difference]: Finished difference. Result has 203 places, 180 transitions, 2110 flow [2024-06-03 19:26:48,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2110, PETRI_PLACES=203, PETRI_TRANSITIONS=180} [2024-06-03 19:26:48,615 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-03 19:26:48,616 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 180 transitions, 2110 flow [2024-06-03 19:26:48,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:48,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:48,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:48,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-03 19:26:48,616 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 19:26:48,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash 280301883, now seen corresponding path program 10 times [2024-06-03 19:26:48,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:48,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916265458] [2024-06-03 19:26:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:48,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916265458] [2024-06-03 19:26:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916265458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:49,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:49,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:49,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156283274] [2024-06-03 19:26:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:49,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:49,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:49,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:49,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:49,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:49,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 180 transitions, 2110 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:49,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:49,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:49,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:49,756 INFO L124 PetriNetUnfolderBase]: 526/929 cut-off events. [2024-06-03 19:26:49,757 INFO L125 PetriNetUnfolderBase]: For 42075/42075 co-relation queries the response was YES. [2024-06-03 19:26:49,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6837 conditions, 929 events. 526/929 cut-off events. For 42075/42075 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4482 event pairs, 79 based on Foata normal form. 2/926 useless extension candidates. Maximal degree in co-relation 6741. Up to 805 conditions per place. [2024-06-03 19:26:49,764 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 148 selfloop transitions, 40 changer transitions 0/190 dead transitions. [2024-06-03 19:26:49,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 190 transitions, 2512 flow [2024-06-03 19:26:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:49,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:49,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-03 19:26:49,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-03 19:26:49,765 INFO L175 Difference]: Start difference. First operand has 203 places, 180 transitions, 2110 flow. Second operand 8 states and 86 transitions. [2024-06-03 19:26:49,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 190 transitions, 2512 flow [2024-06-03 19:26:49,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 190 transitions, 2423 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:49,858 INFO L231 Difference]: Finished difference. Result has 204 places, 180 transitions, 2105 flow [2024-06-03 19:26:49,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2105, PETRI_PLACES=204, PETRI_TRANSITIONS=180} [2024-06-03 19:26:49,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-03 19:26:49,858 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 180 transitions, 2105 flow [2024-06-03 19:26:49,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:49,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:49,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:49,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-03 19:26:49,859 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 19:26:49,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:49,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1004695877, now seen corresponding path program 13 times [2024-06-03 19:26:49,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:49,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583302494] [2024-06-03 19:26:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:50,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:50,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:50,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583302494] [2024-06-03 19:26:50,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583302494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:50,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:50,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600312621] [2024-06-03 19:26:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:50,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:50,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:50,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 180 transitions, 2105 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:50,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:50,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:50,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:50,955 INFO L124 PetriNetUnfolderBase]: 527/931 cut-off events. [2024-06-03 19:26:50,956 INFO L125 PetriNetUnfolderBase]: For 43157/43157 co-relation queries the response was YES. [2024-06-03 19:26:50,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6888 conditions, 931 events. 527/931 cut-off events. For 43157/43157 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4483 event pairs, 79 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 6791. Up to 797 conditions per place. [2024-06-03 19:26:50,962 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 149 selfloop transitions, 43 changer transitions 0/194 dead transitions. [2024-06-03 19:26:50,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 194 transitions, 2591 flow [2024-06-03 19:26:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:26:50,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-03 19:26:50,963 INFO L175 Difference]: Start difference. First operand has 204 places, 180 transitions, 2105 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:26:50,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 194 transitions, 2591 flow [2024-06-03 19:26:51,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 194 transitions, 2459 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:51,072 INFO L231 Difference]: Finished difference. Result has 206 places, 182 transitions, 2136 flow [2024-06-03 19:26:51,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2136, PETRI_PLACES=206, PETRI_TRANSITIONS=182} [2024-06-03 19:26:51,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-03 19:26:51,073 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 182 transitions, 2136 flow [2024-06-03 19:26:51,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:51,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:51,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:51,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-03 19:26:51,074 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 19:26:51,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:51,074 INFO L85 PathProgramCache]: Analyzing trace with hash 508380973, now seen corresponding path program 14 times [2024-06-03 19:26:51,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:51,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384276865] [2024-06-03 19:26:51,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:51,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:51,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:51,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:51,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384276865] [2024-06-03 19:26:51,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384276865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:51,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:51,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:51,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624915280] [2024-06-03 19:26:51,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:51,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:51,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:51,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:51,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:51,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 182 transitions, 2136 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:51,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:51,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:51,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:52,238 INFO L124 PetriNetUnfolderBase]: 533/941 cut-off events. [2024-06-03 19:26:52,239 INFO L125 PetriNetUnfolderBase]: For 44420/44420 co-relation queries the response was YES. [2024-06-03 19:26:52,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6974 conditions, 941 events. 533/941 cut-off events. For 44420/44420 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4545 event pairs, 118 based on Foata normal form. 2/940 useless extension candidates. Maximal degree in co-relation 6876. Up to 653 conditions per place. [2024-06-03 19:26:52,246 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 60 changer transitions 0/203 dead transitions. [2024-06-03 19:26:52,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 203 transitions, 3027 flow [2024-06-03 19:26:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:52,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:52,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-03 19:26:52,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-03 19:26:52,247 INFO L175 Difference]: Start difference. First operand has 206 places, 182 transitions, 2136 flow. Second operand 9 states and 105 transitions. [2024-06-03 19:26:52,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 203 transitions, 3027 flow [2024-06-03 19:26:52,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 203 transitions, 2880 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-03 19:26:52,350 INFO L231 Difference]: Finished difference. Result has 209 places, 188 transitions, 2301 flow [2024-06-03 19:26:52,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2301, PETRI_PLACES=209, PETRI_TRANSITIONS=188} [2024-06-03 19:26:52,351 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-03 19:26:52,351 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 188 transitions, 2301 flow [2024-06-03 19:26:52,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:52,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:52,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:52,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-03 19:26:52,352 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 19:26:52,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash 508626741, now seen corresponding path program 2 times [2024-06-03 19:26:52,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:52,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839685836] [2024-06-03 19:26:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:52,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:53,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:53,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839685836] [2024-06-03 19:26:53,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839685836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:53,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:53,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:26:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431651755] [2024-06-03 19:26:53,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:53,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 19:26:53,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:53,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 19:26:53,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 19:26:53,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:53,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 188 transitions, 2301 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:53,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:53,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:53,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:53,615 INFO L124 PetriNetUnfolderBase]: 531/938 cut-off events. [2024-06-03 19:26:53,616 INFO L125 PetriNetUnfolderBase]: For 43520/43520 co-relation queries the response was YES. [2024-06-03 19:26:53,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6989 conditions, 938 events. 531/938 cut-off events. For 43520/43520 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4521 event pairs, 170 based on Foata normal form. 1/938 useless extension candidates. Maximal degree in co-relation 6889. Up to 903 conditions per place. [2024-06-03 19:26:53,623 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 179 selfloop transitions, 15 changer transitions 0/196 dead transitions. [2024-06-03 19:26:53,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 196 transitions, 2722 flow [2024-06-03 19:26:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:26:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:26:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-03 19:26:53,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32661290322580644 [2024-06-03 19:26:53,624 INFO L175 Difference]: Start difference. First operand has 209 places, 188 transitions, 2301 flow. Second operand 8 states and 81 transitions. [2024-06-03 19:26:53,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 196 transitions, 2722 flow [2024-06-03 19:26:53,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 196 transitions, 2560 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-03 19:26:53,732 INFO L231 Difference]: Finished difference. Result has 212 places, 189 transitions, 2195 flow [2024-06-03 19:26:53,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2195, PETRI_PLACES=212, PETRI_TRANSITIONS=189} [2024-06-03 19:26:53,732 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-03 19:26:53,732 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 189 transitions, 2195 flow [2024-06-03 19:26:53,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:53,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:53,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:26:53,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-03 19:26:53,733 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 19:26:53,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:53,733 INFO L85 PathProgramCache]: Analyzing trace with hash 110411009, now seen corresponding path program 15 times [2024-06-03 19:26:53,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:53,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304558632] [2024-06-03 19:26:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:53,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:54,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304558632] [2024-06-03 19:26:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304558632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:54,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:54,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:26:54,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029503993] [2024-06-03 19:26:54,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:54,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:26:54,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:54,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:26:54,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:26:54,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:54,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 189 transitions, 2195 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:54,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:54,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:54,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:54,843 INFO L124 PetriNetUnfolderBase]: 523/926 cut-off events. [2024-06-03 19:26:54,844 INFO L125 PetriNetUnfolderBase]: For 42271/42271 co-relation queries the response was YES. [2024-06-03 19:26:54,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 926 events. 523/926 cut-off events. For 42271/42271 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4480 event pairs, 163 based on Foata normal form. 4/929 useless extension candidates. Maximal degree in co-relation 6442. Up to 868 conditions per place. [2024-06-03 19:26:54,850 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 178 selfloop transitions, 20 changer transitions 0/200 dead transitions. [2024-06-03 19:26:54,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 200 transitions, 2717 flow [2024-06-03 19:26:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:26:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:26:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-03 19:26:54,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-03 19:26:54,851 INFO L175 Difference]: Start difference. First operand has 212 places, 189 transitions, 2195 flow. Second operand 9 states and 94 transitions. [2024-06-03 19:26:54,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 200 transitions, 2717 flow [2024-06-03 19:26:54,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 200 transitions, 2616 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-03 19:26:54,972 INFO L231 Difference]: Finished difference. Result has 215 places, 189 transitions, 2141 flow [2024-06-03 19:26:54,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2141, PETRI_PLACES=215, PETRI_TRANSITIONS=189} [2024-06-03 19:26:54,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-03 19:26:54,973 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 189 transitions, 2141 flow [2024-06-03 19:26:54,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:54,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:54,973 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 19:26:54,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-03 19:26:54,973 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 19:26:54,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash 406428153, now seen corresponding path program 1 times [2024-06-03 19:26:54,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:54,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848530765] [2024-06-03 19:26:54,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:54,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:55,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:55,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848530765] [2024-06-03 19:26:55,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848530765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:55,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:55,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:26:55,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353665497] [2024-06-03 19:26:55,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:55,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:26:55,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:55,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:26:55,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:26:55,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:55,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 189 transitions, 2141 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:55,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:55,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:55,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:56,249 INFO L124 PetriNetUnfolderBase]: 527/933 cut-off events. [2024-06-03 19:26:56,249 INFO L125 PetriNetUnfolderBase]: For 42332/42332 co-relation queries the response was YES. [2024-06-03 19:26:56,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 933 events. 527/933 cut-off events. For 42332/42332 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4522 event pairs, 82 based on Foata normal form. 2/934 useless extension candidates. Maximal degree in co-relation 6439. Up to 812 conditions per place. [2024-06-03 19:26:56,257 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 27 changer transitions 0/208 dead transitions. [2024-06-03 19:26:56,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 208 transitions, 2621 flow [2024-06-03 19:26:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:26:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:26:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 19:26:56,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-03 19:26:56,258 INFO L175 Difference]: Start difference. First operand has 215 places, 189 transitions, 2141 flow. Second operand 10 states and 102 transitions. [2024-06-03 19:26:56,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 208 transitions, 2621 flow [2024-06-03 19:26:56,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 208 transitions, 2564 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 19:26:56,374 INFO L231 Difference]: Finished difference. Result has 217 places, 190 transitions, 2168 flow [2024-06-03 19:26:56,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2168, PETRI_PLACES=217, PETRI_TRANSITIONS=190} [2024-06-03 19:26:56,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-03 19:26:56,375 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 190 transitions, 2168 flow [2024-06-03 19:26:56,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:56,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:56,375 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 19:26:56,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-03 19:26:56,375 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 19:26:56,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:56,376 INFO L85 PathProgramCache]: Analyzing trace with hash -357897663, now seen corresponding path program 2 times [2024-06-03 19:26:56,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:56,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005048023] [2024-06-03 19:26:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:56,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:57,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:57,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005048023] [2024-06-03 19:26:57,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005048023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:57,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:57,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:26:57,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934715264] [2024-06-03 19:26:57,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:57,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:26:57,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:26:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:26:57,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:57,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 190 transitions, 2168 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:57,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:57,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:57,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:57,728 INFO L124 PetriNetUnfolderBase]: 531/941 cut-off events. [2024-06-03 19:26:57,728 INFO L125 PetriNetUnfolderBase]: For 43471/43471 co-relation queries the response was YES. [2024-06-03 19:26:57,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6650 conditions, 941 events. 531/941 cut-off events. For 43471/43471 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4579 event pairs, 112 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 6547. Up to 855 conditions per place. [2024-06-03 19:26:57,736 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 182 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-06-03 19:26:57,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 209 transitions, 2654 flow [2024-06-03 19:26:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:26:57,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:26:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 19:26:57,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:26:57,737 INFO L175 Difference]: Start difference. First operand has 217 places, 190 transitions, 2168 flow. Second operand 10 states and 105 transitions. [2024-06-03 19:26:57,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 209 transitions, 2654 flow [2024-06-03 19:26:57,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 209 transitions, 2580 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-03 19:26:57,856 INFO L231 Difference]: Finished difference. Result has 219 places, 191 transitions, 2176 flow [2024-06-03 19:26:57,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2176, PETRI_PLACES=219, PETRI_TRANSITIONS=191} [2024-06-03 19:26:57,856 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-03 19:26:57,857 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 191 transitions, 2176 flow [2024-06-03 19:26:57,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:57,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:57,857 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 19:26:57,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-03 19:26:57,857 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 19:26:57,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash -300060963, now seen corresponding path program 3 times [2024-06-03 19:26:57,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:57,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015620736] [2024-06-03 19:26:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:57,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:26:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:26:58,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:26:58,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015620736] [2024-06-03 19:26:58,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015620736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:26:58,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:26:58,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:26:58,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518540416] [2024-06-03 19:26:58,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:26:58,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:26:58,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:26:58,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:26:58,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:26:58,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:26:58,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 191 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:58,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:26:58,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:26:58,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:26:59,161 INFO L124 PetriNetUnfolderBase]: 535/949 cut-off events. [2024-06-03 19:26:59,161 INFO L125 PetriNetUnfolderBase]: For 45948/45948 co-relation queries the response was YES. [2024-06-03 19:26:59,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6706 conditions, 949 events. 535/949 cut-off events. For 45948/45948 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4647 event pairs, 111 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 6602. Up to 861 conditions per place. [2024-06-03 19:26:59,169 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 176 selfloop transitions, 31 changer transitions 0/209 dead transitions. [2024-06-03 19:26:59,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 209 transitions, 2664 flow [2024-06-03 19:26:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:26:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:26:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:26:59,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:26:59,172 INFO L175 Difference]: Start difference. First operand has 219 places, 191 transitions, 2176 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:26:59,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 209 transitions, 2664 flow [2024-06-03 19:26:59,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 209 transitions, 2592 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:26:59,313 INFO L231 Difference]: Finished difference. Result has 221 places, 192 transitions, 2201 flow [2024-06-03 19:26:59,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2201, PETRI_PLACES=221, PETRI_TRANSITIONS=192} [2024-06-03 19:26:59,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-03 19:26:59,314 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 192 transitions, 2201 flow [2024-06-03 19:26:59,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:26:59,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:26:59,314 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 19:26:59,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-03 19:26:59,314 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 19:26:59,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:26:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash -299672998, now seen corresponding path program 1 times [2024-06-03 19:26:59,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:26:59,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859964321] [2024-06-03 19:26:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:26:59,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:26:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:00,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:00,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:00,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859964321] [2024-06-03 19:27:00,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859964321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:00,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:00,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:00,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851911483] [2024-06-03 19:27:00,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:00,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:00,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:00,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:00,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:00,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:00,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 192 transitions, 2201 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:00,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:00,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:00,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:00,808 INFO L124 PetriNetUnfolderBase]: 538/954 cut-off events. [2024-06-03 19:27:00,809 INFO L125 PetriNetUnfolderBase]: For 46959/46959 co-relation queries the response was YES. [2024-06-03 19:27:00,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6792 conditions, 954 events. 538/954 cut-off events. For 46959/46959 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4679 event pairs, 109 based on Foata normal form. 1/954 useless extension candidates. Maximal degree in co-relation 6687. Up to 863 conditions per place. [2024-06-03 19:27:00,817 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 175 selfloop transitions, 34 changer transitions 0/211 dead transitions. [2024-06-03 19:27:00,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 211 transitions, 2739 flow [2024-06-03 19:27:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 19:27:00,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-03 19:27:00,818 INFO L175 Difference]: Start difference. First operand has 221 places, 192 transitions, 2201 flow. Second operand 10 states and 107 transitions. [2024-06-03 19:27:00,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 211 transitions, 2739 flow [2024-06-03 19:27:00,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 211 transitions, 2654 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:00,948 INFO L231 Difference]: Finished difference. Result has 223 places, 194 transitions, 2268 flow [2024-06-03 19:27:00,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2268, PETRI_PLACES=223, PETRI_TRANSITIONS=194} [2024-06-03 19:27:00,948 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-03 19:27:00,948 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 194 transitions, 2268 flow [2024-06-03 19:27:00,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:00,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:00,949 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 19:27:00,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-03 19:27:00,949 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 19:27:00,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:00,949 INFO L85 PathProgramCache]: Analyzing trace with hash -299805213, now seen corresponding path program 4 times [2024-06-03 19:27:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:00,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007420540] [2024-06-03 19:27:00,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:00,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:02,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:02,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007420540] [2024-06-03 19:27:02,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007420540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:02,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:02,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:02,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487717668] [2024-06-03 19:27:02,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:02,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:02,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:02,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:02,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:02,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:02,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 194 transitions, 2268 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:02,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:02,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:02,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:02,458 INFO L124 PetriNetUnfolderBase]: 542/962 cut-off events. [2024-06-03 19:27:02,458 INFO L125 PetriNetUnfolderBase]: For 49496/49496 co-relation queries the response was YES. [2024-06-03 19:27:02,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6883 conditions, 962 events. 542/962 cut-off events. For 49496/49496 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4720 event pairs, 112 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 6777. Up to 877 conditions per place. [2024-06-03 19:27:02,466 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 182 selfloop transitions, 28 changer transitions 0/212 dead transitions. [2024-06-03 19:27:02,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 212 transitions, 2762 flow [2024-06-03 19:27:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 19:27:02,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:27:02,467 INFO L175 Difference]: Start difference. First operand has 223 places, 194 transitions, 2268 flow. Second operand 10 states and 105 transitions. [2024-06-03 19:27:02,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 212 transitions, 2762 flow [2024-06-03 19:27:02,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 212 transitions, 2640 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:02,604 INFO L231 Difference]: Finished difference. Result has 225 places, 195 transitions, 2238 flow [2024-06-03 19:27:02,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2238, PETRI_PLACES=225, PETRI_TRANSITIONS=195} [2024-06-03 19:27:02,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-03 19:27:02,605 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 195 transitions, 2238 flow [2024-06-03 19:27:02,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:02,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:02,605 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 19:27:02,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-03 19:27:02,605 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 19:27:02,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:02,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1772749235, now seen corresponding path program 1 times [2024-06-03 19:27:02,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:02,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723716906] [2024-06-03 19:27:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:02,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:03,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723716906] [2024-06-03 19:27:03,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723716906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:03,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:03,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:03,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439624270] [2024-06-03 19:27:03,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:03,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:03,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:03,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:03,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:03,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:03,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 195 transitions, 2238 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:03,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:03,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:03,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:04,281 INFO L124 PetriNetUnfolderBase]: 548/973 cut-off events. [2024-06-03 19:27:04,282 INFO L125 PetriNetUnfolderBase]: For 51673/51673 co-relation queries the response was YES. [2024-06-03 19:27:04,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 973 events. 548/973 cut-off events. For 51673/51673 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4775 event pairs, 92 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 6843. Up to 882 conditions per place. [2024-06-03 19:27:04,291 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 181 selfloop transitions, 33 changer transitions 0/216 dead transitions. [2024-06-03 19:27:04,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 216 transitions, 2782 flow [2024-06-03 19:27:04,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:27:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:27:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 19:27:04,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-03 19:27:04,292 INFO L175 Difference]: Start difference. First operand has 225 places, 195 transitions, 2238 flow. Second operand 11 states and 115 transitions. [2024-06-03 19:27:04,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 216 transitions, 2782 flow [2024-06-03 19:27:04,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 216 transitions, 2700 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:04,447 INFO L231 Difference]: Finished difference. Result has 228 places, 197 transitions, 2293 flow [2024-06-03 19:27:04,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2293, PETRI_PLACES=228, PETRI_TRANSITIONS=197} [2024-06-03 19:27:04,447 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-03 19:27:04,448 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 197 transitions, 2293 flow [2024-06-03 19:27:04,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:04,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:04,448 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 19:27:04,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-03 19:27:04,448 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 19:27:04,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2062995917, now seen corresponding path program 5 times [2024-06-03 19:27:04,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:04,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840700109] [2024-06-03 19:27:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:04,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:05,282 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 19:27:05,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:05,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840700109] [2024-06-03 19:27:05,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840700109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:05,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:05,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492099559] [2024-06-03 19:27:05,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:05,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:05,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:05,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:05,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:05,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:05,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 197 transitions, 2293 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:05,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:05,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:05,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:05,636 INFO L124 PetriNetUnfolderBase]: 552/980 cut-off events. [2024-06-03 19:27:05,637 INFO L125 PetriNetUnfolderBase]: For 53316/53316 co-relation queries the response was YES. [2024-06-03 19:27:05,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7049 conditions, 980 events. 552/980 cut-off events. For 53316/53316 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4839 event pairs, 91 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 6941. Up to 894 conditions per place. [2024-06-03 19:27:05,645 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 189 selfloop transitions, 24 changer transitions 0/215 dead transitions. [2024-06-03 19:27:05,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 215 transitions, 2795 flow [2024-06-03 19:27:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:27:05,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:27:05,646 INFO L175 Difference]: Start difference. First operand has 228 places, 197 transitions, 2293 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:27:05,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 215 transitions, 2795 flow [2024-06-03 19:27:05,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 215 transitions, 2674 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-03 19:27:05,773 INFO L231 Difference]: Finished difference. Result has 229 places, 198 transitions, 2258 flow [2024-06-03 19:27:05,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2172, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2258, PETRI_PLACES=229, PETRI_TRANSITIONS=198} [2024-06-03 19:27:05,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-03 19:27:05,774 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 198 transitions, 2258 flow [2024-06-03 19:27:05,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:05,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:05,774 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 19:27:05,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-03 19:27:05,774 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 19:27:05,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:05,774 INFO L85 PathProgramCache]: Analyzing trace with hash -827338875, now seen corresponding path program 6 times [2024-06-03 19:27:05,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:05,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227181228] [2024-06-03 19:27:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:05,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:06,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:06,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227181228] [2024-06-03 19:27:06,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227181228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:06,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:06,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 19:27:06,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287799419] [2024-06-03 19:27:06,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:06,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 19:27:06,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:06,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 19:27:06,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-03 19:27:06,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:06,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 198 transitions, 2258 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:06,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:06,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:06,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:07,258 INFO L124 PetriNetUnfolderBase]: 556/988 cut-off events. [2024-06-03 19:27:07,258 INFO L125 PetriNetUnfolderBase]: For 55297/55297 co-relation queries the response was YES. [2024-06-03 19:27:07,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7077 conditions, 988 events. 556/988 cut-off events. For 55297/55297 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4899 event pairs, 93 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 6968. Up to 900 conditions per place. [2024-06-03 19:27:07,268 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 184 selfloop transitions, 29 changer transitions 0/215 dead transitions. [2024-06-03 19:27:07,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 215 transitions, 2762 flow [2024-06-03 19:27:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:07,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:07,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-03 19:27:07,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-03 19:27:07,274 INFO L175 Difference]: Start difference. First operand has 229 places, 198 transitions, 2258 flow. Second operand 9 states and 102 transitions. [2024-06-03 19:27:07,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 215 transitions, 2762 flow [2024-06-03 19:27:07,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 215 transitions, 2686 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:07,429 INFO L231 Difference]: Finished difference. Result has 230 places, 199 transitions, 2281 flow [2024-06-03 19:27:07,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2281, PETRI_PLACES=230, PETRI_TRANSITIONS=199} [2024-06-03 19:27:07,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-03 19:27:07,430 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 199 transitions, 2281 flow [2024-06-03 19:27:07,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:07,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:07,430 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 19:27:07,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-03 19:27:07,430 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:27:07,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:07,431 INFO L85 PathProgramCache]: Analyzing trace with hash -869425036, now seen corresponding path program 2 times [2024-06-03 19:27:07,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:07,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22821559] [2024-06-03 19:27:07,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:07,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:08,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:08,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22821559] [2024-06-03 19:27:08,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22821559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:08,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:08,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:08,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814818065] [2024-06-03 19:27:08,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:08,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:08,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:08,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:08,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:08,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:08,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 199 transitions, 2281 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:08,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:08,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:08,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:08,580 INFO L124 PetriNetUnfolderBase]: 559/993 cut-off events. [2024-06-03 19:27:08,581 INFO L125 PetriNetUnfolderBase]: For 55434/55434 co-relation queries the response was YES. [2024-06-03 19:27:08,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7156 conditions, 993 events. 559/993 cut-off events. For 55434/55434 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4941 event pairs, 93 based on Foata normal form. 1/993 useless extension candidates. Maximal degree in co-relation 7047. Up to 902 conditions per place. [2024-06-03 19:27:08,590 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 182 selfloop transitions, 33 changer transitions 0/217 dead transitions. [2024-06-03 19:27:08,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 217 transitions, 2835 flow [2024-06-03 19:27:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:08,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 19:27:08,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-03 19:27:08,591 INFO L175 Difference]: Start difference. First operand has 230 places, 199 transitions, 2281 flow. Second operand 10 states and 108 transitions. [2024-06-03 19:27:08,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 217 transitions, 2835 flow [2024-06-03 19:27:08,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 217 transitions, 2748 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:27:08,751 INFO L231 Difference]: Finished difference. Result has 233 places, 201 transitions, 2350 flow [2024-06-03 19:27:08,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2350, PETRI_PLACES=233, PETRI_TRANSITIONS=201} [2024-06-03 19:27:08,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-03 19:27:08,752 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 201 transitions, 2350 flow [2024-06-03 19:27:08,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:08,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:08,752 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 19:27:08,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-03 19:27:08,752 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 19:27:08,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:08,753 INFO L85 PathProgramCache]: Analyzing trace with hash -869428911, now seen corresponding path program 7 times [2024-06-03 19:27:08,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:08,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400620783] [2024-06-03 19:27:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:08,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:09,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400620783] [2024-06-03 19:27:09,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400620783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:09,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:09,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:09,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894834081] [2024-06-03 19:27:09,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:09,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:09,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:09,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:09,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 201 transitions, 2350 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:09,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:09,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:09,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:10,133 INFO L124 PetriNetUnfolderBase]: 563/1001 cut-off events. [2024-06-03 19:27:10,133 INFO L125 PetriNetUnfolderBase]: For 59206/59206 co-relation queries the response was YES. [2024-06-03 19:27:10,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 1001 events. 563/1001 cut-off events. For 59206/59206 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5007 event pairs, 93 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 7137. Up to 916 conditions per place. [2024-06-03 19:27:10,142 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 189 selfloop transitions, 27 changer transitions 0/218 dead transitions. [2024-06-03 19:27:10,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 218 transitions, 2860 flow [2024-06-03 19:27:10,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:27:10,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:27:10,144 INFO L175 Difference]: Start difference. First operand has 233 places, 201 transitions, 2350 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:27:10,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 218 transitions, 2860 flow [2024-06-03 19:27:10,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 218 transitions, 2734 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:10,319 INFO L231 Difference]: Finished difference. Result has 235 places, 202 transitions, 2320 flow [2024-06-03 19:27:10,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2320, PETRI_PLACES=235, PETRI_TRANSITIONS=202} [2024-06-03 19:27:10,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-03 19:27:10,320 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 202 transitions, 2320 flow [2024-06-03 19:27:10,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:10,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:10,320 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 19:27:10,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-03 19:27:10,321 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 19:27:10,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash 484873899, now seen corresponding path program 2 times [2024-06-03 19:27:10,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:10,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241705591] [2024-06-03 19:27:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:10,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:11,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:11,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241705591] [2024-06-03 19:27:11,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241705591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:11,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:11,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890998193] [2024-06-03 19:27:11,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:11,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:11,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:11,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:11,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:11,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 202 transitions, 2320 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:11,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:11,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:11,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:11,729 INFO L124 PetriNetUnfolderBase]: 569/1012 cut-off events. [2024-06-03 19:27:11,729 INFO L125 PetriNetUnfolderBase]: For 60893/60893 co-relation queries the response was YES. [2024-06-03 19:27:11,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7317 conditions, 1012 events. 569/1012 cut-off events. For 60893/60893 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5072 event pairs, 95 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 7205. Up to 921 conditions per place. [2024-06-03 19:27:11,739 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 189 selfloop transitions, 29 changer transitions 0/220 dead transitions. [2024-06-03 19:27:11,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 220 transitions, 2870 flow [2024-06-03 19:27:11,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:11,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 19:27:11,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-03 19:27:11,740 INFO L175 Difference]: Start difference. First operand has 235 places, 202 transitions, 2320 flow. Second operand 10 states and 108 transitions. [2024-06-03 19:27:11,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 220 transitions, 2870 flow [2024-06-03 19:27:11,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 220 transitions, 2784 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:11,902 INFO L231 Difference]: Finished difference. Result has 237 places, 204 transitions, 2370 flow [2024-06-03 19:27:11,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2370, PETRI_PLACES=237, PETRI_TRANSITIONS=204} [2024-06-03 19:27:11,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-03 19:27:11,903 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 204 transitions, 2370 flow [2024-06-03 19:27:11,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:11,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:11,903 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 19:27:11,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-03 19:27:11,903 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 19:27:11,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1503674407, now seen corresponding path program 8 times [2024-06-03 19:27:11,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:11,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470168825] [2024-06-03 19:27:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470168825] [2024-06-03 19:27:13,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470168825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:13,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:13,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:13,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908297378] [2024-06-03 19:27:13,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:13,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:13,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:13,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:13,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:13,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:13,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 204 transitions, 2370 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:13,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:13,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:13,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:13,426 INFO L124 PetriNetUnfolderBase]: 573/1020 cut-off events. [2024-06-03 19:27:13,426 INFO L125 PetriNetUnfolderBase]: For 63170/63170 co-relation queries the response was YES. [2024-06-03 19:27:13,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7408 conditions, 1020 events. 573/1020 cut-off events. For 63170/63170 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5117 event pairs, 89 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 7295. Up to 918 conditions per place. [2024-06-03 19:27:13,435 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 184 selfloop transitions, 35 changer transitions 0/221 dead transitions. [2024-06-03 19:27:13,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 221 transitions, 2890 flow [2024-06-03 19:27:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 19:27:13,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-03 19:27:13,436 INFO L175 Difference]: Start difference. First operand has 237 places, 204 transitions, 2370 flow. Second operand 10 states and 107 transitions. [2024-06-03 19:27:13,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 221 transitions, 2890 flow [2024-06-03 19:27:13,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 221 transitions, 2778 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:13,624 INFO L231 Difference]: Finished difference. Result has 239 places, 205 transitions, 2372 flow [2024-06-03 19:27:13,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2372, PETRI_PLACES=239, PETRI_TRANSITIONS=205} [2024-06-03 19:27:13,625 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-03 19:27:13,626 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 205 transitions, 2372 flow [2024-06-03 19:27:13,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:13,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:13,626 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 19:27:13,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-03 19:27:13,626 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 19:27:13,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1503524305, now seen corresponding path program 3 times [2024-06-03 19:27:13,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:13,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858403154] [2024-06-03 19:27:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:13,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:14,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:14,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858403154] [2024-06-03 19:27:14,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858403154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:14,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:14,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:14,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826542757] [2024-06-03 19:27:14,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:14,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:14,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:14,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:14,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:14,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:14,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 205 transitions, 2372 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:14,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:14,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:14,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:14,993 INFO L124 PetriNetUnfolderBase]: 579/1030 cut-off events. [2024-06-03 19:27:14,994 INFO L125 PetriNetUnfolderBase]: For 64974/64974 co-relation queries the response was YES. [2024-06-03 19:27:15,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1030 events. 579/1030 cut-off events. For 64974/64974 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5191 event pairs, 89 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7386. Up to 918 conditions per place. [2024-06-03 19:27:15,002 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 37 changer transitions 0/223 dead transitions. [2024-06-03 19:27:15,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 223 transitions, 2932 flow [2024-06-03 19:27:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:15,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 19:27:15,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-03 19:27:15,004 INFO L175 Difference]: Start difference. First operand has 239 places, 205 transitions, 2372 flow. Second operand 10 states and 109 transitions. [2024-06-03 19:27:15,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 223 transitions, 2932 flow [2024-06-03 19:27:15,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 223 transitions, 2828 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:15,190 INFO L231 Difference]: Finished difference. Result has 241 places, 207 transitions, 2424 flow [2024-06-03 19:27:15,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2268, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2424, PETRI_PLACES=241, PETRI_TRANSITIONS=207} [2024-06-03 19:27:15,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-03 19:27:15,191 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 207 transitions, 2424 flow [2024-06-03 19:27:15,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:15,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:15,191 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 19:27:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-03 19:27:15,191 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 19:27:15,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:15,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1503678127, now seen corresponding path program 9 times [2024-06-03 19:27:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:15,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973260503] [2024-06-03 19:27:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:15,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:16,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:16,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:16,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973260503] [2024-06-03 19:27:16,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973260503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:16,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:16,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:16,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871826100] [2024-06-03 19:27:16,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:16,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:16,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:16,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 207 transitions, 2424 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:16,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:16,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:16,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:16,496 INFO L124 PetriNetUnfolderBase]: 590/1051 cut-off events. [2024-06-03 19:27:16,497 INFO L125 PetriNetUnfolderBase]: For 71925/71925 co-relation queries the response was YES. [2024-06-03 19:27:16,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7854 conditions, 1051 events. 590/1051 cut-off events. For 71925/71925 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5346 event pairs, 89 based on Foata normal form. 2/1052 useless extension candidates. Maximal degree in co-relation 7739. Up to 901 conditions per place. [2024-06-03 19:27:16,506 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 44 changer transitions 0/226 dead transitions. [2024-06-03 19:27:16,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 226 transitions, 3122 flow [2024-06-03 19:27:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 19:27:16,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 19:27:16,507 INFO L175 Difference]: Start difference. First operand has 241 places, 207 transitions, 2424 flow. Second operand 10 states and 110 transitions. [2024-06-03 19:27:16,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 226 transitions, 3122 flow [2024-06-03 19:27:16,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 226 transitions, 2988 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:16,692 INFO L231 Difference]: Finished difference. Result has 243 places, 209 transitions, 2464 flow [2024-06-03 19:27:16,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2464, PETRI_PLACES=243, PETRI_TRANSITIONS=209} [2024-06-03 19:27:16,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-03 19:27:16,693 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 209 transitions, 2464 flow [2024-06-03 19:27:16,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:16,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:16,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:27:16,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-03 19:27:16,694 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 19:27:16,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:16,694 INFO L85 PathProgramCache]: Analyzing trace with hash 587727903, now seen corresponding path program 10 times [2024-06-03 19:27:16,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:16,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272616774] [2024-06-03 19:27:16,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:17,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:17,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272616774] [2024-06-03 19:27:17,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272616774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:17,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:17,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:17,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607295452] [2024-06-03 19:27:17,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:17,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:17,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:17,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:17,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:17,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:17,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 209 transitions, 2464 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:17,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:17,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:17,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:18,008 INFO L124 PetriNetUnfolderBase]: 587/1045 cut-off events. [2024-06-03 19:27:18,008 INFO L125 PetriNetUnfolderBase]: For 69166/69166 co-relation queries the response was YES. [2024-06-03 19:27:18,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7663 conditions, 1045 events. 587/1045 cut-off events. For 69166/69166 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5303 event pairs, 141 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 7547. Up to 1002 conditions per place. [2024-06-03 19:27:18,017 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 203 selfloop transitions, 18 changer transitions 0/223 dead transitions. [2024-06-03 19:27:18,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 223 transitions, 2942 flow [2024-06-03 19:27:18,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-03 19:27:18,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-03 19:27:18,019 INFO L175 Difference]: Start difference. First operand has 243 places, 209 transitions, 2464 flow. Second operand 10 states and 100 transitions. [2024-06-03 19:27:18,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 223 transitions, 2942 flow [2024-06-03 19:27:18,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 223 transitions, 2811 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-03 19:27:18,217 INFO L231 Difference]: Finished difference. Result has 247 places, 209 transitions, 2373 flow [2024-06-03 19:27:18,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2373, PETRI_PLACES=247, PETRI_TRANSITIONS=209} [2024-06-03 19:27:18,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-03 19:27:18,219 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 209 transitions, 2373 flow [2024-06-03 19:27:18,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:18,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:18,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:27:18,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-03 19:27:18,219 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 19:27:18,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1498161925, now seen corresponding path program 4 times [2024-06-03 19:27:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:18,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922527146] [2024-06-03 19:27:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:19,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:19,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922527146] [2024-06-03 19:27:19,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922527146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:19,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:19,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:19,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125817730] [2024-06-03 19:27:19,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:19,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:19,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:19,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:19,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:19,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 209 transitions, 2373 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:19,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:19,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:19,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:19,483 INFO L124 PetriNetUnfolderBase]: 593/1055 cut-off events. [2024-06-03 19:27:19,484 INFO L125 PetriNetUnfolderBase]: For 69747/69747 co-relation queries the response was YES. [2024-06-03 19:27:19,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 1055 events. 593/1055 cut-off events. For 69747/69747 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5372 event pairs, 139 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 7522. Up to 993 conditions per place. [2024-06-03 19:27:19,493 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 203 selfloop transitions, 24 changer transitions 0/229 dead transitions. [2024-06-03 19:27:19,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 229 transitions, 2937 flow [2024-06-03 19:27:19,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:27:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:27:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-03 19:27:19,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-03 19:27:19,503 INFO L175 Difference]: Start difference. First operand has 247 places, 209 transitions, 2373 flow. Second operand 11 states and 112 transitions. [2024-06-03 19:27:19,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 229 transitions, 2937 flow [2024-06-03 19:27:19,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 229 transitions, 2899 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-03 19:27:19,723 INFO L231 Difference]: Finished difference. Result has 251 places, 213 transitions, 2472 flow [2024-06-03 19:27:19,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2472, PETRI_PLACES=251, PETRI_TRANSITIONS=213} [2024-06-03 19:27:19,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-03 19:27:19,723 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 213 transitions, 2472 flow [2024-06-03 19:27:19,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:19,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:19,724 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 19:27:19,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-03 19:27:19,724 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 19:27:19,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:19,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1497952396, now seen corresponding path program 1 times [2024-06-03 19:27:19,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:19,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121071530] [2024-06-03 19:27:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:19,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:20,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:20,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121071530] [2024-06-03 19:27:20,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121071530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:20,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:20,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:20,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480504760] [2024-06-03 19:27:20,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:20,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:20,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:20,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:20,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:20,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:20,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 213 transitions, 2472 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:20,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:20,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:20,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:21,175 INFO L124 PetriNetUnfolderBase]: 597/1063 cut-off events. [2024-06-03 19:27:21,176 INFO L125 PetriNetUnfolderBase]: For 71986/71986 co-relation queries the response was YES. [2024-06-03 19:27:21,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7785 conditions, 1063 events. 597/1063 cut-off events. For 71986/71986 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5435 event pairs, 145 based on Foata normal form. 2/1064 useless extension candidates. Maximal degree in co-relation 7664. Up to 1020 conditions per place. [2024-06-03 19:27:21,198 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 20 changer transitions 0/228 dead transitions. [2024-06-03 19:27:21,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 228 transitions, 2982 flow [2024-06-03 19:27:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:27:21,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:27:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-03 19:27:21,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-03 19:27:21,199 INFO L175 Difference]: Start difference. First operand has 251 places, 213 transitions, 2472 flow. Second operand 11 states and 107 transitions. [2024-06-03 19:27:21,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 228 transitions, 2982 flow [2024-06-03 19:27:21,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 228 transitions, 2915 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:27:21,531 INFO L231 Difference]: Finished difference. Result has 255 places, 214 transitions, 2475 flow [2024-06-03 19:27:21,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2405, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2475, PETRI_PLACES=255, PETRI_TRANSITIONS=214} [2024-06-03 19:27:21,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-03 19:27:21,532 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 214 transitions, 2475 flow [2024-06-03 19:27:21,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:21,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:21,532 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 19:27:21,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-03 19:27:21,533 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 19:27:21,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:21,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1497960115, now seen corresponding path program 5 times [2024-06-03 19:27:21,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:21,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612036933] [2024-06-03 19:27:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:21,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:22,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:22,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612036933] [2024-06-03 19:27:22,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612036933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:22,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:22,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:22,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667053030] [2024-06-03 19:27:22,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:22,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:22,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:22,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:22,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 214 transitions, 2475 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:22,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:22,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:22,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:23,009 INFO L124 PetriNetUnfolderBase]: 593/1057 cut-off events. [2024-06-03 19:27:23,009 INFO L125 PetriNetUnfolderBase]: For 69310/69310 co-relation queries the response was YES. [2024-06-03 19:27:23,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 1057 events. 593/1057 cut-off events. For 69310/69310 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5412 event pairs, 138 based on Foata normal form. 2/1058 useless extension candidates. Maximal degree in co-relation 7481. Up to 978 conditions per place. [2024-06-03 19:27:23,019 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 28 changer transitions 0/231 dead transitions. [2024-06-03 19:27:23,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 231 transitions, 2981 flow [2024-06-03 19:27:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:27:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:27:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 19:27:23,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-03 19:27:23,021 INFO L175 Difference]: Start difference. First operand has 255 places, 214 transitions, 2475 flow. Second operand 11 states and 115 transitions. [2024-06-03 19:27:23,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 231 transitions, 2981 flow [2024-06-03 19:27:23,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 231 transitions, 2889 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-03 19:27:23,260 INFO L231 Difference]: Finished difference. Result has 257 places, 214 transitions, 2444 flow [2024-06-03 19:27:23,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2444, PETRI_PLACES=257, PETRI_TRANSITIONS=214} [2024-06-03 19:27:23,260 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-03 19:27:23,261 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 214 transitions, 2444 flow [2024-06-03 19:27:23,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:23,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:23,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:27:23,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-03 19:27:23,261 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 19:27:23,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:23,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1973472853, now seen corresponding path program 11 times [2024-06-03 19:27:23,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:23,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269426291] [2024-06-03 19:27:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:23,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:24,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:24,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269426291] [2024-06-03 19:27:24,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269426291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:24,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:24,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210926407] [2024-06-03 19:27:24,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:24,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:24,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:24,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:24,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:24,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:24,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 214 transitions, 2444 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:24,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:24,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:24,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:24,587 INFO L124 PetriNetUnfolderBase]: 597/1065 cut-off events. [2024-06-03 19:27:24,587 INFO L125 PetriNetUnfolderBase]: For 71728/71728 co-relation queries the response was YES. [2024-06-03 19:27:24,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7681 conditions, 1065 events. 597/1065 cut-off events. For 71728/71728 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5465 event pairs, 102 based on Foata normal form. 2/1066 useless extension candidates. Maximal degree in co-relation 7558. Up to 896 conditions per place. [2024-06-03 19:27:24,598 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 196 selfloop transitions, 32 changer transitions 0/230 dead transitions. [2024-06-03 19:27:24,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 230 transitions, 2978 flow [2024-06-03 19:27:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-03 19:27:24,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:27:24,599 INFO L175 Difference]: Start difference. First operand has 257 places, 214 transitions, 2444 flow. Second operand 9 states and 93 transitions. [2024-06-03 19:27:24,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 230 transitions, 2978 flow [2024-06-03 19:27:24,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 230 transitions, 2811 flow, removed 46 selfloop flow, removed 11 redundant places. [2024-06-03 19:27:24,820 INFO L231 Difference]: Finished difference. Result has 255 places, 215 transitions, 2395 flow [2024-06-03 19:27:24,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2395, PETRI_PLACES=255, PETRI_TRANSITIONS=215} [2024-06-03 19:27:24,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-03 19:27:24,820 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 215 transitions, 2395 flow [2024-06-03 19:27:24,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:24,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:24,821 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 19:27:24,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-03 19:27:24,821 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 19:27:24,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:24,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1971598903, now seen corresponding path program 12 times [2024-06-03 19:27:24,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:24,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730332670] [2024-06-03 19:27:24,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:24,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:25,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730332670] [2024-06-03 19:27:25,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730332670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:25,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:25,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:25,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371674745] [2024-06-03 19:27:25,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:25,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:25,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:25,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:25,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 215 transitions, 2395 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:25,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:25,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:25,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:26,285 INFO L124 PetriNetUnfolderBase]: 601/1073 cut-off events. [2024-06-03 19:27:26,285 INFO L125 PetriNetUnfolderBase]: For 63710/63710 co-relation queries the response was YES. [2024-06-03 19:27:26,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7506 conditions, 1073 events. 601/1073 cut-off events. For 63710/63710 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5511 event pairs, 111 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 7382. Up to 938 conditions per place. [2024-06-03 19:27:26,296 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 191 selfloop transitions, 38 changer transitions 0/231 dead transitions. [2024-06-03 19:27:26,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 231 transitions, 2929 flow [2024-06-03 19:27:26,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:26,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-03 19:27:26,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-03 19:27:26,297 INFO L175 Difference]: Start difference. First operand has 255 places, 215 transitions, 2395 flow. Second operand 9 states and 95 transitions. [2024-06-03 19:27:26,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 231 transitions, 2929 flow [2024-06-03 19:27:26,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 231 transitions, 2819 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-03 19:27:26,505 INFO L231 Difference]: Finished difference. Result has 257 places, 216 transitions, 2409 flow [2024-06-03 19:27:26,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2409, PETRI_PLACES=257, PETRI_TRANSITIONS=216} [2024-06-03 19:27:26,506 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-03 19:27:26,506 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 216 transitions, 2409 flow [2024-06-03 19:27:26,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:26,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:26,506 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 19:27:26,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-03 19:27:26,507 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 19:27:26,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1971595028, now seen corresponding path program 3 times [2024-06-03 19:27:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:26,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132302867] [2024-06-03 19:27:26,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:26,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:27,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:27,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132302867] [2024-06-03 19:27:27,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132302867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:27,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:27,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:27,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940383110] [2024-06-03 19:27:27,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:27,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:27,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:27,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:27,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:27,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:27,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 216 transitions, 2409 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:27,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:27,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:27,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:27,811 INFO L124 PetriNetUnfolderBase]: 599/1070 cut-off events. [2024-06-03 19:27:27,811 INFO L125 PetriNetUnfolderBase]: For 55628/55628 co-relation queries the response was YES. [2024-06-03 19:27:27,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7297 conditions, 1070 events. 599/1070 cut-off events. For 55628/55628 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5494 event pairs, 111 based on Foata normal form. 1/1067 useless extension candidates. Maximal degree in co-relation 7172. Up to 979 conditions per place. [2024-06-03 19:27:27,821 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 33 changer transitions 0/231 dead transitions. [2024-06-03 19:27:27,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 231 transitions, 2977 flow [2024-06-03 19:27:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 19:27:27,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:27:27,823 INFO L175 Difference]: Start difference. First operand has 257 places, 216 transitions, 2409 flow. Second operand 10 states and 105 transitions. [2024-06-03 19:27:27,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 231 transitions, 2977 flow [2024-06-03 19:27:28,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 231 transitions, 2873 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-03 19:27:28,015 INFO L231 Difference]: Finished difference. Result has 260 places, 218 transitions, 2455 flow [2024-06-03 19:27:28,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2455, PETRI_PLACES=260, PETRI_TRANSITIONS=218} [2024-06-03 19:27:28,016 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-03 19:27:28,016 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 218 transitions, 2455 flow [2024-06-03 19:27:28,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:28,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:28,016 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 19:27:28,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-03 19:27:28,017 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 19:27:28,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:28,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1971595183, now seen corresponding path program 13 times [2024-06-03 19:27:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631976923] [2024-06-03 19:27:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:28,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:29,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:29,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:29,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631976923] [2024-06-03 19:27:29,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631976923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:29,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:29,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:29,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533682287] [2024-06-03 19:27:29,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:29,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:29,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:29,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:29,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:29,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:29,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 218 transitions, 2455 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:29,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:29,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:29,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:29,550 INFO L124 PetriNetUnfolderBase]: 603/1078 cut-off events. [2024-06-03 19:27:29,551 INFO L125 PetriNetUnfolderBase]: For 55616/55616 co-relation queries the response was YES. [2024-06-03 19:27:29,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7290 conditions, 1078 events. 603/1078 cut-off events. For 55616/55616 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5558 event pairs, 115 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 7164. Up to 934 conditions per place. [2024-06-03 19:27:29,563 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 185 selfloop transitions, 47 changer transitions 0/234 dead transitions. [2024-06-03 19:27:29,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 234 transitions, 2989 flow [2024-06-03 19:27:29,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:27:29,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-03 19:27:29,564 INFO L175 Difference]: Start difference. First operand has 260 places, 218 transitions, 2455 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:27:29,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 234 transitions, 2989 flow [2024-06-03 19:27:29,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 234 transitions, 2792 flow, removed 41 selfloop flow, removed 11 redundant places. [2024-06-03 19:27:29,770 INFO L231 Difference]: Finished difference. Result has 258 places, 219 transitions, 2395 flow [2024-06-03 19:27:29,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2395, PETRI_PLACES=258, PETRI_TRANSITIONS=219} [2024-06-03 19:27:29,771 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-03 19:27:29,771 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 219 transitions, 2395 flow [2024-06-03 19:27:29,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:29,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:29,771 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 19:27:29,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-03 19:27:29,771 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 19:27:29,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:29,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1884753271, now seen corresponding path program 6 times [2024-06-03 19:27:29,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:29,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017830968] [2024-06-03 19:27:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:31,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:31,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017830968] [2024-06-03 19:27:31,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017830968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:31,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:31,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:31,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978339247] [2024-06-03 19:27:31,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:31,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:31,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:31,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:31,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:31,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 219 transitions, 2395 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:31,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:31,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:31,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:31,637 INFO L124 PetriNetUnfolderBase]: 609/1089 cut-off events. [2024-06-03 19:27:31,638 INFO L125 PetriNetUnfolderBase]: For 57195/57195 co-relation queries the response was YES. [2024-06-03 19:27:31,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7320 conditions, 1089 events. 609/1089 cut-off events. For 57195/57195 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5633 event pairs, 95 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 7198. Up to 938 conditions per place. [2024-06-03 19:27:31,649 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 188 selfloop transitions, 48 changer transitions 0/238 dead transitions. [2024-06-03 19:27:31,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 238 transitions, 2983 flow [2024-06-03 19:27:31,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:27:31,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:27:31,650 INFO L175 Difference]: Start difference. First operand has 258 places, 219 transitions, 2395 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:27:31,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 238 transitions, 2983 flow [2024-06-03 19:27:31,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 238 transitions, 2866 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:27:31,851 INFO L231 Difference]: Finished difference. Result has 261 places, 221 transitions, 2457 flow [2024-06-03 19:27:31,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2278, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2457, PETRI_PLACES=261, PETRI_TRANSITIONS=221} [2024-06-03 19:27:31,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-03 19:27:31,851 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 221 transitions, 2457 flow [2024-06-03 19:27:31,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:31,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:31,852 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 19:27:31,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-03 19:27:31,852 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 19:27:31,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2090693101, now seen corresponding path program 14 times [2024-06-03 19:27:31,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:31,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040367465] [2024-06-03 19:27:31,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:31,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:32,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:32,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040367465] [2024-06-03 19:27:32,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040367465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:32,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:32,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:32,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886215826] [2024-06-03 19:27:32,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:32,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:32,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:32,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:32,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:32,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 221 transitions, 2457 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:32,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:32,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:32,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:33,230 INFO L124 PetriNetUnfolderBase]: 613/1096 cut-off events. [2024-06-03 19:27:33,230 INFO L125 PetriNetUnfolderBase]: For 55410/55410 co-relation queries the response was YES. [2024-06-03 19:27:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7364 conditions, 1096 events. 613/1096 cut-off events. For 55410/55410 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5700 event pairs, 144 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 7241. Up to 1035 conditions per place. [2024-06-03 19:27:33,241 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 208 selfloop transitions, 24 changer transitions 0/234 dead transitions. [2024-06-03 19:27:33,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 234 transitions, 2979 flow [2024-06-03 19:27:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:33,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-03 19:27:33,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-03 19:27:33,243 INFO L175 Difference]: Start difference. First operand has 261 places, 221 transitions, 2457 flow. Second operand 9 states and 91 transitions. [2024-06-03 19:27:33,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 234 transitions, 2979 flow [2024-06-03 19:27:33,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 234 transitions, 2826 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:33,430 INFO L231 Difference]: Finished difference. Result has 262 places, 222 transitions, 2388 flow [2024-06-03 19:27:33,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2388, PETRI_PLACES=262, PETRI_TRANSITIONS=222} [2024-06-03 19:27:33,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-03 19:27:33,431 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 222 transitions, 2388 flow [2024-06-03 19:27:33,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:33,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:33,431 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 19:27:33,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-03 19:27:33,432 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 19:27:33,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:33,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1694635379, now seen corresponding path program 7 times [2024-06-03 19:27:33,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:33,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400857155] [2024-06-03 19:27:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:33,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:34,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:34,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400857155] [2024-06-03 19:27:34,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400857155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:34,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:34,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:34,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897009379] [2024-06-03 19:27:34,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:34,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:34,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:34,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:34,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:34,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:34,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 222 transitions, 2388 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:34,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:34,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:34,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:34,996 INFO L124 PetriNetUnfolderBase]: 619/1106 cut-off events. [2024-06-03 19:27:34,996 INFO L125 PetriNetUnfolderBase]: For 54801/54801 co-relation queries the response was YES. [2024-06-03 19:27:35,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7302 conditions, 1106 events. 619/1106 cut-off events. For 54801/54801 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5749 event pairs, 137 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 7178. Up to 970 conditions per place. [2024-06-03 19:27:35,007 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 45 changer transitions 0/241 dead transitions. [2024-06-03 19:27:35,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 241 transitions, 3082 flow [2024-06-03 19:27:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 19:27:35,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-03 19:27:35,009 INFO L175 Difference]: Start difference. First operand has 262 places, 222 transitions, 2388 flow. Second operand 10 states and 108 transitions. [2024-06-03 19:27:35,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 241 transitions, 3082 flow [2024-06-03 19:27:35,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 241 transitions, 3008 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:35,199 INFO L231 Difference]: Finished difference. Result has 264 places, 224 transitions, 2456 flow [2024-06-03 19:27:35,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2456, PETRI_PLACES=264, PETRI_TRANSITIONS=224} [2024-06-03 19:27:35,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-03 19:27:35,200 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 224 transitions, 2456 flow [2024-06-03 19:27:35,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:35,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:35,200 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 19:27:35,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-03 19:27:35,200 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 19:27:35,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:35,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1694844908, now seen corresponding path program 2 times [2024-06-03 19:27:35,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:35,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159737087] [2024-06-03 19:27:35,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:35,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:36,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:36,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:36,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159737087] [2024-06-03 19:27:36,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159737087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:36,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:36,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:36,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919653434] [2024-06-03 19:27:36,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:36,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:36,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:36,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:36,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:36,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:36,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 224 transitions, 2456 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:36,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:36,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:36,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:36,624 INFO L124 PetriNetUnfolderBase]: 623/1114 cut-off events. [2024-06-03 19:27:36,624 INFO L125 PetriNetUnfolderBase]: For 55078/55078 co-relation queries the response was YES. [2024-06-03 19:27:36,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7393 conditions, 1114 events. 623/1114 cut-off events. For 55078/55078 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5810 event pairs, 150 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 7269. Up to 1053 conditions per place. [2024-06-03 19:27:36,635 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 208 selfloop transitions, 28 changer transitions 0/238 dead transitions. [2024-06-03 19:27:36,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 238 transitions, 2990 flow [2024-06-03 19:27:36,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-03 19:27:36,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3161290322580645 [2024-06-03 19:27:36,645 INFO L175 Difference]: Start difference. First operand has 264 places, 224 transitions, 2456 flow. Second operand 10 states and 98 transitions. [2024-06-03 19:27:36,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 238 transitions, 2990 flow [2024-06-03 19:27:36,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 238 transitions, 2871 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-03 19:27:36,852 INFO L231 Difference]: Finished difference. Result has 266 places, 226 transitions, 2443 flow [2024-06-03 19:27:36,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2443, PETRI_PLACES=266, PETRI_TRANSITIONS=226} [2024-06-03 19:27:36,853 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-03 19:27:36,853 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 226 transitions, 2443 flow [2024-06-03 19:27:36,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:36,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:36,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:27:36,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-03 19:27:36,854 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 19:27:36,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:36,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1689122897, now seen corresponding path program 15 times [2024-06-03 19:27:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:36,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419534053] [2024-06-03 19:27:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:37,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:37,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419534053] [2024-06-03 19:27:37,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419534053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:37,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:37,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509617590] [2024-06-03 19:27:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:37,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:37,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:37,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:37,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:37,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:37,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 226 transitions, 2443 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:37,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:37,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:37,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:38,316 INFO L124 PetriNetUnfolderBase]: 627/1123 cut-off events. [2024-06-03 19:27:38,316 INFO L125 PetriNetUnfolderBase]: For 55242/55242 co-relation queries the response was YES. [2024-06-03 19:27:38,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 1123 events. 627/1123 cut-off events. For 55242/55242 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5850 event pairs, 90 based on Foata normal form. 2/1124 useless extension candidates. Maximal degree in co-relation 7271. Up to 989 conditions per place. [2024-06-03 19:27:38,327 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 196 selfloop transitions, 43 changer transitions 0/241 dead transitions. [2024-06-03 19:27:38,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 241 transitions, 2989 flow [2024-06-03 19:27:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-03 19:27:38,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-03 19:27:38,329 INFO L175 Difference]: Start difference. First operand has 266 places, 226 transitions, 2443 flow. Second operand 9 states and 96 transitions. [2024-06-03 19:27:38,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 241 transitions, 2989 flow [2024-06-03 19:27:38,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 241 transitions, 2911 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-03 19:27:38,515 INFO L231 Difference]: Finished difference. Result has 268 places, 227 transitions, 2489 flow [2024-06-03 19:27:38,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2365, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2489, PETRI_PLACES=268, PETRI_TRANSITIONS=227} [2024-06-03 19:27:38,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-03 19:27:38,516 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 227 transitions, 2489 flow [2024-06-03 19:27:38,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:38,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:38,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:27:38,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-03 19:27:38,516 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 19:27:38,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1689119177, now seen corresponding path program 16 times [2024-06-03 19:27:38,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:38,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186002883] [2024-06-03 19:27:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:38,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:39,579 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 19:27:39,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:39,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186002883] [2024-06-03 19:27:39,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186002883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:39,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:39,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:39,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729856561] [2024-06-03 19:27:39,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:39,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:39,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:39,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:39,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:39,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:39,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 227 transitions, 2489 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:39,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:39,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:39,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:40,062 INFO L124 PetriNetUnfolderBase]: 631/1131 cut-off events. [2024-06-03 19:27:40,063 INFO L125 PetriNetUnfolderBase]: For 55572/55572 co-relation queries the response was YES. [2024-06-03 19:27:40,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7486 conditions, 1131 events. 631/1131 cut-off events. For 55572/55572 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5919 event pairs, 86 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 7360. Up to 997 conditions per place. [2024-06-03 19:27:40,075 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 199 selfloop transitions, 41 changer transitions 0/242 dead transitions. [2024-06-03 19:27:40,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 242 transitions, 3037 flow [2024-06-03 19:27:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-03 19:27:40,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-03 19:27:40,076 INFO L175 Difference]: Start difference. First operand has 268 places, 227 transitions, 2489 flow. Second operand 9 states and 95 transitions. [2024-06-03 19:27:40,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 242 transitions, 3037 flow [2024-06-03 19:27:40,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 242 transitions, 2923 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:27:40,288 INFO L231 Difference]: Finished difference. Result has 270 places, 228 transitions, 2497 flow [2024-06-03 19:27:40,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2497, PETRI_PLACES=270, PETRI_TRANSITIONS=228} [2024-06-03 19:27:40,288 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-03 19:27:40,288 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 228 transitions, 2497 flow [2024-06-03 19:27:40,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:40,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:40,289 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 19:27:40,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-03 19:27:40,289 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 19:27:40,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1694837189, now seen corresponding path program 8 times [2024-06-03 19:27:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:40,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769922171] [2024-06-03 19:27:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:40,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:41,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:41,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769922171] [2024-06-03 19:27:41,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769922171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:41,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:41,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733458783] [2024-06-03 19:27:41,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:41,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:41,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:41,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:41,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:41,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 228 transitions, 2497 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:41,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:41,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:41,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:41,797 INFO L124 PetriNetUnfolderBase]: 627/1124 cut-off events. [2024-06-03 19:27:41,797 INFO L125 PetriNetUnfolderBase]: For 51427/51427 co-relation queries the response was YES. [2024-06-03 19:27:41,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7276 conditions, 1124 events. 627/1124 cut-off events. For 51427/51427 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5901 event pairs, 139 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 7149. Up to 991 conditions per place. [2024-06-03 19:27:41,807 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 43 changer transitions 0/243 dead transitions. [2024-06-03 19:27:41,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 243 transitions, 3021 flow [2024-06-03 19:27:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:41,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:27:41,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:27:41,809 INFO L175 Difference]: Start difference. First operand has 270 places, 228 transitions, 2497 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:27:41,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 243 transitions, 3021 flow [2024-06-03 19:27:41,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 243 transitions, 2891 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:41,993 INFO L231 Difference]: Finished difference. Result has 272 places, 228 transitions, 2461 flow [2024-06-03 19:27:41,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2461, PETRI_PLACES=272, PETRI_TRANSITIONS=228} [2024-06-03 19:27:41,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-03 19:27:41,993 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 228 transitions, 2461 flow [2024-06-03 19:27:41,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:41,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:41,994 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 19:27:41,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-03 19:27:41,994 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 19:27:41,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1689272999, now seen corresponding path program 9 times [2024-06-03 19:27:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321106154] [2024-06-03 19:27:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:43,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:43,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321106154] [2024-06-03 19:27:43,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321106154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:43,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:43,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:43,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987922199] [2024-06-03 19:27:43,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:43,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:43,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:43,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:43,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:43,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 228 transitions, 2461 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:43,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:43,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:43,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:43,531 INFO L124 PetriNetUnfolderBase]: 633/1135 cut-off events. [2024-06-03 19:27:43,532 INFO L125 PetriNetUnfolderBase]: For 51633/51633 co-relation queries the response was YES. [2024-06-03 19:27:43,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7326 conditions, 1135 events. 633/1135 cut-off events. For 51633/51633 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5991 event pairs, 89 based on Foata normal form. 2/1136 useless extension candidates. Maximal degree in co-relation 7199. Up to 981 conditions per place. [2024-06-03 19:27:43,544 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 49 changer transitions 0/246 dead transitions. [2024-06-03 19:27:43,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 246 transitions, 3063 flow [2024-06-03 19:27:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:27:43,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:27:43,545 INFO L175 Difference]: Start difference. First operand has 272 places, 228 transitions, 2461 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:27:43,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 246 transitions, 3063 flow [2024-06-03 19:27:43,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 246 transitions, 2922 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-03 19:27:43,736 INFO L231 Difference]: Finished difference. Result has 271 places, 230 transitions, 2498 flow [2024-06-03 19:27:43,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2498, PETRI_PLACES=271, PETRI_TRANSITIONS=230} [2024-06-03 19:27:43,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-03 19:27:43,737 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 230 transitions, 2498 flow [2024-06-03 19:27:43,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:43,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:43,737 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 19:27:43,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-03 19:27:43,737 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 19:27:43,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash 104934963, now seen corresponding path program 17 times [2024-06-03 19:27:43,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:43,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813003317] [2024-06-03 19:27:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:43,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:44,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:44,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813003317] [2024-06-03 19:27:44,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813003317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:44,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:44,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:44,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250591600] [2024-06-03 19:27:44,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:44,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:44,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:44,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:44,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:44,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:44,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 230 transitions, 2498 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:44,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:44,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:44,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:45,149 INFO L124 PetriNetUnfolderBase]: 637/1143 cut-off events. [2024-06-03 19:27:45,149 INFO L125 PetriNetUnfolderBase]: For 50618/50618 co-relation queries the response was YES. [2024-06-03 19:27:45,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7362 conditions, 1143 events. 637/1143 cut-off events. For 50618/50618 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6045 event pairs, 154 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 7235. Up to 1090 conditions per place. [2024-06-03 19:27:45,160 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 218 selfloop transitions, 21 changer transitions 0/241 dead transitions. [2024-06-03 19:27:45,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 241 transitions, 3032 flow [2024-06-03 19:27:45,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-03 19:27:45,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-03 19:27:45,161 INFO L175 Difference]: Start difference. First operand has 271 places, 230 transitions, 2498 flow. Second operand 9 states and 90 transitions. [2024-06-03 19:27:45,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 241 transitions, 3032 flow [2024-06-03 19:27:45,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 241 transitions, 2880 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:45,358 INFO L231 Difference]: Finished difference. Result has 272 places, 231 transitions, 2426 flow [2024-06-03 19:27:45,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2426, PETRI_PLACES=272, PETRI_TRANSITIONS=231} [2024-06-03 19:27:45,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-03 19:27:45,359 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 231 transitions, 2426 flow [2024-06-03 19:27:45,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:45,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:45,359 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 19:27:45,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-03 19:27:45,359 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 19:27:45,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:45,360 INFO L85 PathProgramCache]: Analyzing trace with hash 104940915, now seen corresponding path program 10 times [2024-06-03 19:27:45,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:45,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146447912] [2024-06-03 19:27:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:45,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:46,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:46,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:46,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146447912] [2024-06-03 19:27:46,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146447912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:46,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:46,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:46,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931339240] [2024-06-03 19:27:46,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:46,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:46,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:46,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:46,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:46,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:46,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 231 transitions, 2426 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:46,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:46,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:46,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:46,837 INFO L124 PetriNetUnfolderBase]: 643/1153 cut-off events. [2024-06-03 19:27:46,838 INFO L125 PetriNetUnfolderBase]: For 51517/51517 co-relation queries the response was YES. [2024-06-03 19:27:46,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7323 conditions, 1153 events. 643/1153 cut-off events. For 51517/51517 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6096 event pairs, 154 based on Foata normal form. 2/1152 useless extension candidates. Maximal degree in co-relation 7195. Up to 1081 conditions per place. [2024-06-03 19:27:46,852 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 217 selfloop transitions, 27 changer transitions 0/246 dead transitions. [2024-06-03 19:27:46,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 246 transitions, 2991 flow [2024-06-03 19:27:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:46,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 19:27:46,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-03 19:27:46,858 INFO L175 Difference]: Start difference. First operand has 272 places, 231 transitions, 2426 flow. Second operand 10 states and 102 transitions. [2024-06-03 19:27:46,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 246 transitions, 2991 flow [2024-06-03 19:27:47,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 246 transitions, 2921 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-03 19:27:47,057 INFO L231 Difference]: Finished difference. Result has 276 places, 234 transitions, 2472 flow [2024-06-03 19:27:47,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2472, PETRI_PLACES=276, PETRI_TRANSITIONS=234} [2024-06-03 19:27:47,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-03 19:27:47,057 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 234 transitions, 2472 flow [2024-06-03 19:27:47,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:47,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:47,058 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 19:27:47,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-03 19:27:47,058 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 19:27:47,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1412429888, now seen corresponding path program 3 times [2024-06-03 19:27:47,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:47,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892522647] [2024-06-03 19:27:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:48,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:48,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892522647] [2024-06-03 19:27:48,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892522647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:48,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:48,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:48,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246938565] [2024-06-03 19:27:48,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:48,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:48,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:48,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:48,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:48,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:48,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 234 transitions, 2472 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:48,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:48,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:48,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:48,866 INFO L124 PetriNetUnfolderBase]: 654/1174 cut-off events. [2024-06-03 19:27:48,866 INFO L125 PetriNetUnfolderBase]: For 57014/57014 co-relation queries the response was YES. [2024-06-03 19:27:48,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7622 conditions, 1174 events. 654/1174 cut-off events. For 57014/57014 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6258 event pairs, 219 based on Foata normal form. 2/1175 useless extension candidates. Maximal degree in co-relation 7492. Up to 1116 conditions per place. [2024-06-03 19:27:48,878 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 228 selfloop transitions, 19 changer transitions 0/249 dead transitions. [2024-06-03 19:27:48,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 249 transitions, 3170 flow [2024-06-03 19:27:48,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:27:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:27:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-03 19:27:48,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-03 19:27:48,879 INFO L175 Difference]: Start difference. First operand has 276 places, 234 transitions, 2472 flow. Second operand 11 states and 105 transitions. [2024-06-03 19:27:48,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 249 transitions, 3170 flow [2024-06-03 19:27:49,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 249 transitions, 3069 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-03 19:27:49,112 INFO L231 Difference]: Finished difference. Result has 278 places, 236 transitions, 2467 flow [2024-06-03 19:27:49,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2467, PETRI_PLACES=278, PETRI_TRANSITIONS=236} [2024-06-03 19:27:49,112 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-03 19:27:49,113 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 236 transitions, 2467 flow [2024-06-03 19:27:49,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:49,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:49,113 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 19:27:49,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-03 19:27:49,113 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 19:27:49,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash 688159185, now seen corresponding path program 11 times [2024-06-03 19:27:49,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:49,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914515850] [2024-06-03 19:27:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:50,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:50,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914515850] [2024-06-03 19:27:50,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914515850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:50,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:50,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:50,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824534031] [2024-06-03 19:27:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:50,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:50,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:50,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:50,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:50,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 236 transitions, 2467 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:50,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:50,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:50,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:50,775 INFO L124 PetriNetUnfolderBase]: 650/1168 cut-off events. [2024-06-03 19:27:50,776 INFO L125 PetriNetUnfolderBase]: For 54713/54713 co-relation queries the response was YES. [2024-06-03 19:27:50,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 1168 events. 650/1168 cut-off events. For 54713/54713 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6223 event pairs, 154 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 7288. Up to 1096 conditions per place. [2024-06-03 19:27:50,787 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 220 selfloop transitions, 27 changer transitions 0/249 dead transitions. [2024-06-03 19:27:50,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 249 transitions, 2997 flow [2024-06-03 19:27:50,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:50,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 19:27:50,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-03 19:27:50,789 INFO L175 Difference]: Start difference. First operand has 278 places, 236 transitions, 2467 flow. Second operand 10 states and 103 transitions. [2024-06-03 19:27:50,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 249 transitions, 2997 flow [2024-06-03 19:27:50,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 249 transitions, 2925 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-03 19:27:50,986 INFO L231 Difference]: Finished difference. Result has 282 places, 236 transitions, 2454 flow [2024-06-03 19:27:50,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2395, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2454, PETRI_PLACES=282, PETRI_TRANSITIONS=236} [2024-06-03 19:27:50,986 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-03 19:27:50,986 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 236 transitions, 2454 flow [2024-06-03 19:27:50,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:50,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:50,987 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 19:27:50,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-03 19:27:50,987 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 19:27:50,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:50,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1412698658, now seen corresponding path program 4 times [2024-06-03 19:27:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:50,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186616760] [2024-06-03 19:27:50,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:52,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:52,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:52,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186616760] [2024-06-03 19:27:52,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186616760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:52,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:52,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:52,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61283779] [2024-06-03 19:27:52,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:52,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:52,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:52,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:52,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:52,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:52,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 236 transitions, 2454 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:52,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:52,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:52,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:52,642 INFO L124 PetriNetUnfolderBase]: 647/1163 cut-off events. [2024-06-03 19:27:52,642 INFO L125 PetriNetUnfolderBase]: For 51784/51784 co-relation queries the response was YES. [2024-06-03 19:27:52,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7249 conditions, 1163 events. 647/1163 cut-off events. For 51784/51784 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6202 event pairs, 219 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 7118. Up to 1122 conditions per place. [2024-06-03 19:27:52,654 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 227 selfloop transitions, 16 changer transitions 0/245 dead transitions. [2024-06-03 19:27:52,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 245 transitions, 2960 flow [2024-06-03 19:27:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-03 19:27:52,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-03 19:27:52,656 INFO L175 Difference]: Start difference. First operand has 282 places, 236 transitions, 2454 flow. Second operand 9 states and 89 transitions. [2024-06-03 19:27:52,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 245 transitions, 2960 flow [2024-06-03 19:27:52,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 245 transitions, 2866 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-03 19:27:52,869 INFO L231 Difference]: Finished difference. Result has 282 places, 236 transitions, 2396 flow [2024-06-03 19:27:52,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2396, PETRI_PLACES=282, PETRI_TRANSITIONS=236} [2024-06-03 19:27:52,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-03 19:27:52,870 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 236 transitions, 2396 flow [2024-06-03 19:27:52,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:52,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:52,870 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 19:27:52,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-03 19:27:52,870 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 19:27:52,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1163355707, now seen corresponding path program 12 times [2024-06-03 19:27:52,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:52,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013096800] [2024-06-03 19:27:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:53,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:53,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013096800] [2024-06-03 19:27:53,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013096800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:53,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:53,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:53,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459111956] [2024-06-03 19:27:53,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:53,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:53,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:53,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:53,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:53,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:53,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 236 transitions, 2396 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:53,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:53,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:53,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:54,343 INFO L124 PetriNetUnfolderBase]: 643/1157 cut-off events. [2024-06-03 19:27:54,343 INFO L125 PetriNetUnfolderBase]: For 48778/48778 co-relation queries the response was YES. [2024-06-03 19:27:54,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7020 conditions, 1157 events. 643/1157 cut-off events. For 48778/48778 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6165 event pairs, 216 based on Foata normal form. 2/1158 useless extension candidates. Maximal degree in co-relation 6888. Up to 1116 conditions per place. [2024-06-03 19:27:54,353 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 229 selfloop transitions, 17 changer transitions 0/248 dead transitions. [2024-06-03 19:27:54,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 248 transitions, 2922 flow [2024-06-03 19:27:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-03 19:27:54,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-03 19:27:54,354 INFO L175 Difference]: Start difference. First operand has 282 places, 236 transitions, 2396 flow. Second operand 10 states and 97 transitions. [2024-06-03 19:27:54,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 248 transitions, 2922 flow [2024-06-03 19:27:54,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 248 transitions, 2864 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:54,572 INFO L231 Difference]: Finished difference. Result has 285 places, 237 transitions, 2388 flow [2024-06-03 19:27:54,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2388, PETRI_PLACES=285, PETRI_TRANSITIONS=237} [2024-06-03 19:27:54,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-03 19:27:54,573 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 237 transitions, 2388 flow [2024-06-03 19:27:54,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:54,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:54,573 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 19:27:54,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-03 19:27:54,573 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 19:27:54,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:54,574 INFO L85 PathProgramCache]: Analyzing trace with hash 105150444, now seen corresponding path program 5 times [2024-06-03 19:27:54,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:54,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922165714] [2024-06-03 19:27:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:55,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:55,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922165714] [2024-06-03 19:27:55,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922165714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:55,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:55,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:55,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999619224] [2024-06-03 19:27:55,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:55,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:55,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:55,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:55,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 237 transitions, 2388 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:55,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:55,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:55,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:56,052 INFO L124 PetriNetUnfolderBase]: 647/1165 cut-off events. [2024-06-03 19:27:56,052 INFO L125 PetriNetUnfolderBase]: For 50499/50499 co-relation queries the response was YES. [2024-06-03 19:27:56,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7096 conditions, 1165 events. 647/1165 cut-off events. For 50499/50499 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6228 event pairs, 158 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 6962. Up to 1112 conditions per place. [2024-06-03 19:27:56,065 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 223 selfloop transitions, 23 changer transitions 0/248 dead transitions. [2024-06-03 19:27:56,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 248 transitions, 2930 flow [2024-06-03 19:27:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-03 19:27:56,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-03 19:27:56,066 INFO L175 Difference]: Start difference. First operand has 285 places, 237 transitions, 2388 flow. Second operand 10 states and 97 transitions. [2024-06-03 19:27:56,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 248 transitions, 2930 flow [2024-06-03 19:27:56,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 248 transitions, 2892 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 19:27:56,275 INFO L231 Difference]: Finished difference. Result has 287 places, 238 transitions, 2430 flow [2024-06-03 19:27:56,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2430, PETRI_PLACES=287, PETRI_TRANSITIONS=238} [2024-06-03 19:27:56,275 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-03 19:27:56,276 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 238 transitions, 2430 flow [2024-06-03 19:27:56,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:56,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:56,276 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 19:27:56,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-03 19:27:56,276 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 19:27:56,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:56,277 INFO L85 PathProgramCache]: Analyzing trace with hash 99428433, now seen corresponding path program 18 times [2024-06-03 19:27:56,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:56,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112670868] [2024-06-03 19:27:56,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:56,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:57,199 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 19:27:57,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:57,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112670868] [2024-06-03 19:27:57,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112670868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:57,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:57,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:57,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690176967] [2024-06-03 19:27:57,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:57,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:57,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:57,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:57,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:57,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 238 transitions, 2430 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:57,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:57,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:57,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:57,557 INFO L124 PetriNetUnfolderBase]: 651/1173 cut-off events. [2024-06-03 19:27:57,558 INFO L125 PetriNetUnfolderBase]: For 52432/52432 co-relation queries the response was YES. [2024-06-03 19:27:57,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7212 conditions, 1173 events. 651/1173 cut-off events. For 52432/52432 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6259 event pairs, 98 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 7077. Up to 1041 conditions per place. [2024-06-03 19:27:57,571 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 207 selfloop transitions, 42 changer transitions 0/251 dead transitions. [2024-06-03 19:27:57,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 251 transitions, 2994 flow [2024-06-03 19:27:57,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:27:57,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:27:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-03 19:27:57,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-03 19:27:57,573 INFO L175 Difference]: Start difference. First operand has 287 places, 238 transitions, 2430 flow. Second operand 9 states and 95 transitions. [2024-06-03 19:27:57,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 251 transitions, 2994 flow [2024-06-03 19:27:57,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 251 transitions, 2898 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-03 19:27:57,850 INFO L231 Difference]: Finished difference. Result has 286 places, 239 transitions, 2458 flow [2024-06-03 19:27:57,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2458, PETRI_PLACES=286, PETRI_TRANSITIONS=239} [2024-06-03 19:27:57,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-03 19:27:57,851 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 239 transitions, 2458 flow [2024-06-03 19:27:57,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:57,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:57,852 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 19:27:57,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-03 19:27:57,852 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 19:27:57,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash 99578535, now seen corresponding path program 13 times [2024-06-03 19:27:57,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:57,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415345069] [2024-06-03 19:27:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:57,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:27:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:27:58,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:27:58,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415345069] [2024-06-03 19:27:58,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415345069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:27:58,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:27:58,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:27:58,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962152770] [2024-06-03 19:27:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:27:58,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:27:58,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:27:58,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:27:58,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:27:58,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:27:58,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 239 transitions, 2458 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:58,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:27:58,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:27:58,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:27:59,118 INFO L124 PetriNetUnfolderBase]: 652/1175 cut-off events. [2024-06-03 19:27:59,118 INFO L125 PetriNetUnfolderBase]: For 51976/51976 co-relation queries the response was YES. [2024-06-03 19:27:59,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7204 conditions, 1175 events. 652/1175 cut-off events. For 51976/51976 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6291 event pairs, 98 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 7069. Up to 1033 conditions per place. [2024-06-03 19:27:59,130 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 208 selfloop transitions, 45 changer transitions 0/255 dead transitions. [2024-06-03 19:27:59,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 255 transitions, 3074 flow [2024-06-03 19:27:59,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:27:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:27:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 19:27:59,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:27:59,131 INFO L175 Difference]: Start difference. First operand has 286 places, 239 transitions, 2458 flow. Second operand 10 states and 105 transitions. [2024-06-03 19:27:59,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 255 transitions, 3074 flow [2024-06-03 19:27:59,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 255 transitions, 2960 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-03 19:27:59,336 INFO L231 Difference]: Finished difference. Result has 289 places, 241 transitions, 2513 flow [2024-06-03 19:27:59,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2513, PETRI_PLACES=289, PETRI_TRANSITIONS=241} [2024-06-03 19:27:59,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-03 19:27:59,336 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 241 transitions, 2513 flow [2024-06-03 19:27:59,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:27:59,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:27:59,337 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 19:27:59,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-03 19:27:59,337 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 19:27:59,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:27:59,337 INFO L85 PathProgramCache]: Analyzing trace with hash 99424713, now seen corresponding path program 19 times [2024-06-03 19:27:59,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:27:59,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635894358] [2024-06-03 19:27:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:27:59,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:27:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:00,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:00,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635894358] [2024-06-03 19:28:00,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635894358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:00,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:00,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:28:00,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348142238] [2024-06-03 19:28:00,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:00,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:28:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:28:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:28:00,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:00,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 241 transitions, 2513 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:00,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:00,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:00,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:00,710 INFO L124 PetriNetUnfolderBase]: 656/1183 cut-off events. [2024-06-03 19:28:00,710 INFO L125 PetriNetUnfolderBase]: For 53435/53435 co-relation queries the response was YES. [2024-06-03 19:28:00,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 1183 events. 656/1183 cut-off events. For 53435/53435 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6359 event pairs, 96 based on Foata normal form. 2/1180 useless extension candidates. Maximal degree in co-relation 7142. Up to 1051 conditions per place. [2024-06-03 19:28:00,722 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 211 selfloop transitions, 41 changer transitions 0/254 dead transitions. [2024-06-03 19:28:00,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 254 transitions, 3083 flow [2024-06-03 19:28:00,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:28:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:28:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-03 19:28:00,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-03 19:28:00,723 INFO L175 Difference]: Start difference. First operand has 289 places, 241 transitions, 2513 flow. Second operand 9 states and 94 transitions. [2024-06-03 19:28:00,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 254 transitions, 3083 flow [2024-06-03 19:28:00,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 254 transitions, 2930 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-03 19:28:00,943 INFO L231 Difference]: Finished difference. Result has 290 places, 242 transitions, 2484 flow [2024-06-03 19:28:00,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2484, PETRI_PLACES=290, PETRI_TRANSITIONS=242} [2024-06-03 19:28:00,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-03 19:28:00,943 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 242 transitions, 2484 flow [2024-06-03 19:28:00,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:00,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:00,944 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 19:28:00,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-03 19:28:00,944 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 19:28:00,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1419848498, now seen corresponding path program 6 times [2024-06-03 19:28:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:00,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496914710] [2024-06-03 19:28:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:00,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:01,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:01,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496914710] [2024-06-03 19:28:01,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496914710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:01,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:01,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:28:01,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447201439] [2024-06-03 19:28:01,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:01,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:28:01,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:28:01,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:28:02,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:02,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 242 transitions, 2484 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:02,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:02,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:02,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:02,325 INFO L124 PetriNetUnfolderBase]: 653/1178 cut-off events. [2024-06-03 19:28:02,325 INFO L125 PetriNetUnfolderBase]: For 49423/49423 co-relation queries the response was YES. [2024-06-03 19:28:02,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 1178 events. 653/1178 cut-off events. For 49423/49423 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6343 event pairs, 161 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 6901. Up to 1081 conditions per place. [2024-06-03 19:28:02,337 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 209 selfloop transitions, 40 changer transitions 0/251 dead transitions. [2024-06-03 19:28:02,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 251 transitions, 3002 flow [2024-06-03 19:28:02,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:28:02,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:28:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-03 19:28:02,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-03 19:28:02,338 INFO L175 Difference]: Start difference. First operand has 290 places, 242 transitions, 2484 flow. Second operand 9 states and 95 transitions. [2024-06-03 19:28:02,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 251 transitions, 3002 flow [2024-06-03 19:28:02,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 251 transitions, 2888 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-03 19:28:02,550 INFO L231 Difference]: Finished difference. Result has 292 places, 242 transitions, 2454 flow [2024-06-03 19:28:02,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2370, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2454, PETRI_PLACES=292, PETRI_TRANSITIONS=242} [2024-06-03 19:28:02,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-03 19:28:02,550 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 242 transitions, 2454 flow [2024-06-03 19:28:02,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:02,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:02,551 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 19:28:02,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-03 19:28:02,551 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 19:28:02,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:02,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1420063979, now seen corresponding path program 20 times [2024-06-03 19:28:02,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:02,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438681024] [2024-06-03 19:28:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:03,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:03,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438681024] [2024-06-03 19:28:03,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438681024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:03,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:03,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:28:03,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487234761] [2024-06-03 19:28:03,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:03,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:28:03,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:03,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:28:03,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:28:03,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:03,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 242 transitions, 2454 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:03,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:03,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:03,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:03,883 INFO L124 PetriNetUnfolderBase]: 650/1173 cut-off events. [2024-06-03 19:28:03,883 INFO L125 PetriNetUnfolderBase]: For 45106/45106 co-relation queries the response was YES. [2024-06-03 19:28:03,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 1173 events. 650/1173 cut-off events. For 45106/45106 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6315 event pairs, 152 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 6653. Up to 1090 conditions per place. [2024-06-03 19:28:03,894 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 220 selfloop transitions, 31 changer transitions 0/253 dead transitions. [2024-06-03 19:28:03,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 253 transitions, 2984 flow [2024-06-03 19:28:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:28:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:28:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-03 19:28:03,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-03 19:28:03,895 INFO L175 Difference]: Start difference. First operand has 292 places, 242 transitions, 2454 flow. Second operand 9 states and 93 transitions. [2024-06-03 19:28:03,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 253 transitions, 2984 flow [2024-06-03 19:28:04,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 253 transitions, 2810 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-03 19:28:04,133 INFO L231 Difference]: Finished difference. Result has 290 places, 242 transitions, 2346 flow [2024-06-03 19:28:04,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2346, PETRI_PLACES=290, PETRI_TRANSITIONS=242} [2024-06-03 19:28:04,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-03 19:28:04,133 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 242 transitions, 2346 flow [2024-06-03 19:28:04,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:04,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:04,134 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 19:28:04,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-03 19:28:04,134 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 19:28:04,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:04,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1419856217, now seen corresponding path program 14 times [2024-06-03 19:28:04,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:04,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236263826] [2024-06-03 19:28:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:04,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:05,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:05,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236263826] [2024-06-03 19:28:05,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236263826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:05,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:05,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:28:05,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633530856] [2024-06-03 19:28:05,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:05,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:28:05,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:05,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:28:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:28:05,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:05,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 242 transitions, 2346 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:05,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:05,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:05,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:05,711 INFO L124 PetriNetUnfolderBase]: 656/1183 cut-off events. [2024-06-03 19:28:05,712 INFO L125 PetriNetUnfolderBase]: For 45945/45945 co-relation queries the response was YES. [2024-06-03 19:28:05,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6728 conditions, 1183 events. 656/1183 cut-off events. For 45945/45945 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6419 event pairs, 142 based on Foata normal form. 2/1182 useless extension candidates. Maximal degree in co-relation 6592. Up to 1018 conditions per place. [2024-06-03 19:28:05,723 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 208 selfloop transitions, 50 changer transitions 0/260 dead transitions. [2024-06-03 19:28:05,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 260 transitions, 2955 flow [2024-06-03 19:28:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:28:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:28:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 19:28:05,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-03 19:28:05,724 INFO L175 Difference]: Start difference. First operand has 290 places, 242 transitions, 2346 flow. Second operand 10 states and 108 transitions. [2024-06-03 19:28:05,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 260 transitions, 2955 flow [2024-06-03 19:28:05,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 260 transitions, 2777 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-03 19:28:05,928 INFO L231 Difference]: Finished difference. Result has 292 places, 246 transitions, 2362 flow [2024-06-03 19:28:05,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2168, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2362, PETRI_PLACES=292, PETRI_TRANSITIONS=246} [2024-06-03 19:28:05,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-03 19:28:05,929 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 246 transitions, 2362 flow [2024-06-03 19:28:05,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:05,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:05,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:28:05,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-03 19:28:05,930 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 19:28:05,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:05,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1420058027, now seen corresponding path program 15 times [2024-06-03 19:28:05,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:05,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052724700] [2024-06-03 19:28:05,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:05,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:07,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:07,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052724700] [2024-06-03 19:28:07,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052724700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:07,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:07,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:28:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407387688] [2024-06-03 19:28:07,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:07,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:28:07,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:28:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:28:07,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:07,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 246 transitions, 2362 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:07,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:07,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:07,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:07,766 INFO L124 PetriNetUnfolderBase]: 652/1177 cut-off events. [2024-06-03 19:28:07,766 INFO L125 PetriNetUnfolderBase]: For 40193/40193 co-relation queries the response was YES. [2024-06-03 19:28:07,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 1177 events. 652/1177 cut-off events. For 40193/40193 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6368 event pairs, 141 based on Foata normal form. 2/1176 useless extension candidates. Maximal degree in co-relation 6354. Up to 1012 conditions per place. [2024-06-03 19:28:07,778 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 51 changer transitions 0/259 dead transitions. [2024-06-03 19:28:07,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 259 transitions, 2912 flow [2024-06-03 19:28:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:28:07,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:28:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:28:07,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:28:07,779 INFO L175 Difference]: Start difference. First operand has 292 places, 246 transitions, 2362 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:28:07,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 259 transitions, 2912 flow [2024-06-03 19:28:07,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 259 transitions, 2771 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-03 19:28:07,963 INFO L231 Difference]: Finished difference. Result has 295 places, 246 transitions, 2328 flow [2024-06-03 19:28:07,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2328, PETRI_PLACES=295, PETRI_TRANSITIONS=246} [2024-06-03 19:28:07,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-03 19:28:07,964 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 246 transitions, 2328 flow [2024-06-03 19:28:07,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:07,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:07,964 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 19:28:07,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-03 19:28:07,964 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 19:28:07,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:07,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1975571086, now seen corresponding path program 1 times [2024-06-03 19:28:07,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:07,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535506395] [2024-06-03 19:28:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:07,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535506395] [2024-06-03 19:28:09,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535506395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:09,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:09,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:09,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380300465] [2024-06-03 19:28:09,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:09,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:09,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:09,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:09,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:09,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 246 transitions, 2328 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:09,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:09,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:09,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:09,455 INFO L124 PetriNetUnfolderBase]: 656/1184 cut-off events. [2024-06-03 19:28:09,456 INFO L125 PetriNetUnfolderBase]: For 42128/42128 co-relation queries the response was YES. [2024-06-03 19:28:09,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6468 conditions, 1184 events. 656/1184 cut-off events. For 42128/42128 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6399 event pairs, 111 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 6331. Up to 1055 conditions per place. [2024-06-03 19:28:09,467 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 237 selfloop transitions, 28 changer transitions 0/267 dead transitions. [2024-06-03 19:28:09,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 267 transitions, 2932 flow [2024-06-03 19:28:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-03 19:28:09,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-03 19:28:09,468 INFO L175 Difference]: Start difference. First operand has 295 places, 246 transitions, 2328 flow. Second operand 11 states and 110 transitions. [2024-06-03 19:28:09,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 267 transitions, 2932 flow [2024-06-03 19:28:09,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 267 transitions, 2797 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:28:09,633 INFO L231 Difference]: Finished difference. Result has 296 places, 247 transitions, 2281 flow [2024-06-03 19:28:09,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2281, PETRI_PLACES=296, PETRI_TRANSITIONS=247} [2024-06-03 19:28:09,633 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-03 19:28:09,633 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 247 transitions, 2281 flow [2024-06-03 19:28:09,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:09,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:09,634 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 19:28:09,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-03 19:28:09,634 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 19:28:09,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:09,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1790075298, now seen corresponding path program 2 times [2024-06-03 19:28:09,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:09,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412517182] [2024-06-03 19:28:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:09,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:10,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412517182] [2024-06-03 19:28:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412517182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:10,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:10,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676177632] [2024-06-03 19:28:10,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:10,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:10,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:10,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:10,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:10,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 247 transitions, 2281 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:10,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:10,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:10,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:11,079 INFO L124 PetriNetUnfolderBase]: 660/1192 cut-off events. [2024-06-03 19:28:11,080 INFO L125 PetriNetUnfolderBase]: For 42182/42182 co-relation queries the response was YES. [2024-06-03 19:28:11,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6476 conditions, 1192 events. 660/1192 cut-off events. For 42182/42182 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6462 event pairs, 146 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 6338. Up to 1098 conditions per place. [2024-06-03 19:28:11,091 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 26 changer transitions 0/268 dead transitions. [2024-06-03 19:28:11,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 268 transitions, 2891 flow [2024-06-03 19:28:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-03 19:28:11,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-03 19:28:11,093 INFO L175 Difference]: Start difference. First operand has 296 places, 247 transitions, 2281 flow. Second operand 11 states and 113 transitions. [2024-06-03 19:28:11,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 268 transitions, 2891 flow [2024-06-03 19:28:11,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 268 transitions, 2813 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:11,294 INFO L231 Difference]: Finished difference. Result has 298 places, 248 transitions, 2289 flow [2024-06-03 19:28:11,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2289, PETRI_PLACES=298, PETRI_TRANSITIONS=248} [2024-06-03 19:28:11,295 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-03 19:28:11,295 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 248 transitions, 2289 flow [2024-06-03 19:28:11,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:11,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:11,295 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 19:28:11,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-03 19:28:11,295 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 19:28:11,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash -712069618, now seen corresponding path program 3 times [2024-06-03 19:28:11,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:11,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165392073] [2024-06-03 19:28:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:11,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:12,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:12,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165392073] [2024-06-03 19:28:12,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165392073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:12,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:12,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:12,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062614175] [2024-06-03 19:28:12,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:12,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:12,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:12,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:12,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:12,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 248 transitions, 2289 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:12,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:12,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:12,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:12,705 INFO L124 PetriNetUnfolderBase]: 664/1200 cut-off events. [2024-06-03 19:28:12,706 INFO L125 PetriNetUnfolderBase]: For 44722/44722 co-relation queries the response was YES. [2024-06-03 19:28:12,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6516 conditions, 1200 events. 664/1200 cut-off events. For 44722/44722 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6498 event pairs, 143 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 6377. Up to 1107 conditions per place. [2024-06-03 19:28:12,717 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 237 selfloop transitions, 29 changer transitions 0/268 dead transitions. [2024-06-03 19:28:12,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 268 transitions, 2899 flow [2024-06-03 19:28:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:12,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-03 19:28:12,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-03 19:28:12,718 INFO L175 Difference]: Start difference. First operand has 298 places, 248 transitions, 2289 flow. Second operand 11 states and 113 transitions. [2024-06-03 19:28:12,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 268 transitions, 2899 flow [2024-06-03 19:28:12,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 268 transitions, 2823 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:12,922 INFO L231 Difference]: Finished difference. Result has 300 places, 249 transitions, 2307 flow [2024-06-03 19:28:12,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2307, PETRI_PLACES=300, PETRI_TRANSITIONS=249} [2024-06-03 19:28:12,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-03 19:28:12,923 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 249 transitions, 2307 flow [2024-06-03 19:28:12,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:12,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:12,923 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 19:28:12,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-03 19:28:12,923 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 19:28:12,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash -700335808, now seen corresponding path program 4 times [2024-06-03 19:28:12,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:12,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512082956] [2024-06-03 19:28:12,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:12,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:14,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:14,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512082956] [2024-06-03 19:28:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512082956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:14,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174762998] [2024-06-03 19:28:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:14,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:14,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:14,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 249 transitions, 2307 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:14,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:14,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:14,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:14,462 INFO L124 PetriNetUnfolderBase]: 675/1221 cut-off events. [2024-06-03 19:28:14,462 INFO L125 PetriNetUnfolderBase]: For 52263/52263 co-relation queries the response was YES. [2024-06-03 19:28:14,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6842 conditions, 1221 events. 675/1221 cut-off events. For 52263/52263 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6665 event pairs, 143 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 6702. Up to 1103 conditions per place. [2024-06-03 19:28:14,473 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 234 selfloop transitions, 35 changer transitions 0/271 dead transitions. [2024-06-03 19:28:14,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 271 transitions, 3113 flow [2024-06-03 19:28:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 19:28:14,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-03 19:28:14,474 INFO L175 Difference]: Start difference. First operand has 300 places, 249 transitions, 2307 flow. Second operand 11 states and 117 transitions. [2024-06-03 19:28:14,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 271 transitions, 3113 flow [2024-06-03 19:28:14,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 271 transitions, 3029 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:14,700 INFO L231 Difference]: Finished difference. Result has 302 places, 251 transitions, 2363 flow [2024-06-03 19:28:14,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2223, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2363, PETRI_PLACES=302, PETRI_TRANSITIONS=251} [2024-06-03 19:28:14,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-03 19:28:14,701 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 251 transitions, 2363 flow [2024-06-03 19:28:14,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:14,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:14,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:28:14,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-03 19:28:14,701 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 19:28:14,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash -699913402, now seen corresponding path program 1 times [2024-06-03 19:28:14,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:14,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855103472] [2024-06-03 19:28:14,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:14,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:16,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:16,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855103472] [2024-06-03 19:28:16,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855103472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:16,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:16,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:16,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436737299] [2024-06-03 19:28:16,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:16,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:16,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:16,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:16,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 251 transitions, 2363 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:16,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:16,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:16,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:16,529 INFO L124 PetriNetUnfolderBase]: 678/1226 cut-off events. [2024-06-03 19:28:16,529 INFO L125 PetriNetUnfolderBase]: For 51442/51442 co-relation queries the response was YES. [2024-06-03 19:28:16,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6910 conditions, 1226 events. 678/1226 cut-off events. For 51442/51442 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6693 event pairs, 146 based on Foata normal form. 1/1226 useless extension candidates. Maximal degree in co-relation 6769. Up to 1124 conditions per place. [2024-06-03 19:28:16,541 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 38 changer transitions 0/272 dead transitions. [2024-06-03 19:28:16,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 272 transitions, 3029 flow [2024-06-03 19:28:16,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 19:28:16,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-03 19:28:16,542 INFO L175 Difference]: Start difference. First operand has 302 places, 251 transitions, 2363 flow. Second operand 11 states and 116 transitions. [2024-06-03 19:28:16,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 272 transitions, 3029 flow [2024-06-03 19:28:16,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 272 transitions, 2949 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-03 19:28:16,757 INFO L231 Difference]: Finished difference. Result has 306 places, 253 transitions, 2443 flow [2024-06-03 19:28:16,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2443, PETRI_PLACES=306, PETRI_TRANSITIONS=253} [2024-06-03 19:28:16,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-03 19:28:16,758 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 253 transitions, 2443 flow [2024-06-03 19:28:16,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:16,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:16,758 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 19:28:16,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-03 19:28:16,758 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 19:28:16,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:16,759 INFO L85 PathProgramCache]: Analyzing trace with hash -699919168, now seen corresponding path program 5 times [2024-06-03 19:28:16,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:16,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808921412] [2024-06-03 19:28:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:16,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:17,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:17,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808921412] [2024-06-03 19:28:17,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808921412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:17,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:17,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:17,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709597027] [2024-06-03 19:28:17,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:17,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:17,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:17,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:17,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:17,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:17,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 253 transitions, 2443 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:17,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:17,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:17,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:18,313 INFO L124 PetriNetUnfolderBase]: 675/1221 cut-off events. [2024-06-03 19:28:18,313 INFO L125 PetriNetUnfolderBase]: For 48391/48391 co-relation queries the response was YES. [2024-06-03 19:28:18,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6744 conditions, 1221 events. 675/1221 cut-off events. For 48391/48391 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6671 event pairs, 146 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 6601. Up to 1122 conditions per place. [2024-06-03 19:28:18,325 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 235 selfloop transitions, 35 changer transitions 0/272 dead transitions. [2024-06-03 19:28:18,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 272 transitions, 3035 flow [2024-06-03 19:28:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 19:28:18,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-03 19:28:18,326 INFO L175 Difference]: Start difference. First operand has 306 places, 253 transitions, 2443 flow. Second operand 11 states and 115 transitions. [2024-06-03 19:28:18,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 272 transitions, 3035 flow [2024-06-03 19:28:18,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 272 transitions, 2877 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:18,556 INFO L231 Difference]: Finished difference. Result has 308 places, 253 transitions, 2360 flow [2024-06-03 19:28:18,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2360, PETRI_PLACES=308, PETRI_TRANSITIONS=253} [2024-06-03 19:28:18,556 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-03 19:28:18,556 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 253 transitions, 2360 flow [2024-06-03 19:28:18,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:18,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:18,557 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 19:28:18,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-03 19:28:18,557 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 19:28:18,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash -229936014, now seen corresponding path program 1 times [2024-06-03 19:28:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491174493] [2024-06-03 19:28:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:18,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:19,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:19,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491174493] [2024-06-03 19:28:19,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491174493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:19,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:19,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:19,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664004066] [2024-06-03 19:28:19,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:19,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:19,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:19,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:19,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:19,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 253 transitions, 2360 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:19,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:19,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:19,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:20,018 INFO L124 PetriNetUnfolderBase]: 691/1258 cut-off events. [2024-06-03 19:28:20,019 INFO L125 PetriNetUnfolderBase]: For 73095/73095 co-relation queries the response was YES. [2024-06-03 19:28:20,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6871 conditions, 1258 events. 691/1258 cut-off events. For 73095/73095 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6912 event pairs, 127 based on Foata normal form. 10/1267 useless extension candidates. Maximal degree in co-relation 6727. Up to 1125 conditions per place. [2024-06-03 19:28:20,039 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 235 selfloop transitions, 30 changer transitions 11/278 dead transitions. [2024-06-03 19:28:20,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 278 transitions, 3052 flow [2024-06-03 19:28:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:28:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:28:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-03 19:28:20,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:28:20,040 INFO L175 Difference]: Start difference. First operand has 308 places, 253 transitions, 2360 flow. Second operand 12 states and 126 transitions. [2024-06-03 19:28:20,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 278 transitions, 3052 flow [2024-06-03 19:28:20,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 278 transitions, 2979 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-03 19:28:20,280 INFO L231 Difference]: Finished difference. Result has 310 places, 250 transitions, 2319 flow [2024-06-03 19:28:20,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2319, PETRI_PLACES=310, PETRI_TRANSITIONS=250} [2024-06-03 19:28:20,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-03 19:28:20,281 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 250 transitions, 2319 flow [2024-06-03 19:28:20,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:20,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:20,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:28:20,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-03 19:28:20,282 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 19:28:20,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash 471636976, now seen corresponding path program 6 times [2024-06-03 19:28:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637147084] [2024-06-03 19:28:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:20,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:21,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:21,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637147084] [2024-06-03 19:28:21,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637147084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:21,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:21,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:21,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019381828] [2024-06-03 19:28:21,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:21,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:21,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:21,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 250 transitions, 2319 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:21,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:21,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:21,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:21,735 INFO L124 PetriNetUnfolderBase]: 669/1215 cut-off events. [2024-06-03 19:28:21,735 INFO L125 PetriNetUnfolderBase]: For 50950/50950 co-relation queries the response was YES. [2024-06-03 19:28:21,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 1215 events. 669/1215 cut-off events. For 50950/50950 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6663 event pairs, 121 based on Foata normal form. 2/1216 useless extension candidates. Maximal degree in co-relation 6513. Up to 1121 conditions per place. [2024-06-03 19:28:21,748 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 243 selfloop transitions, 25 changer transitions 0/270 dead transitions. [2024-06-03 19:28:21,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 270 transitions, 2937 flow [2024-06-03 19:28:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:21,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-03 19:28:21,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-03 19:28:21,749 INFO L175 Difference]: Start difference. First operand has 310 places, 250 transitions, 2319 flow. Second operand 11 states and 114 transitions. [2024-06-03 19:28:21,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 270 transitions, 2937 flow [2024-06-03 19:28:22,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 270 transitions, 2867 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:28:22,084 INFO L231 Difference]: Finished difference. Result has 307 places, 251 transitions, 2339 flow [2024-06-03 19:28:22,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2339, PETRI_PLACES=307, PETRI_TRANSITIONS=251} [2024-06-03 19:28:22,084 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-03 19:28:22,084 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 251 transitions, 2339 flow [2024-06-03 19:28:22,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:22,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:22,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:28:22,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-03 19:28:22,088 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 19:28:22,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:22,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1182491502, now seen corresponding path program 7 times [2024-06-03 19:28:22,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:22,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929343677] [2024-06-03 19:28:22,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:22,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:23,072 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 19:28:23,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:23,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929343677] [2024-06-03 19:28:23,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929343677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:23,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:23,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822506088] [2024-06-03 19:28:23,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:23,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:23,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:23,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:23,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 251 transitions, 2339 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:23,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:23,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:23,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:23,554 INFO L124 PetriNetUnfolderBase]: 673/1223 cut-off events. [2024-06-03 19:28:23,554 INFO L125 PetriNetUnfolderBase]: For 51714/51714 co-relation queries the response was YES. [2024-06-03 19:28:23,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6729 conditions, 1223 events. 673/1223 cut-off events. For 51714/51714 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6744 event pairs, 123 based on Foata normal form. 2/1224 useless extension candidates. Maximal degree in co-relation 6585. Up to 1130 conditions per place. [2024-06-03 19:28:23,567 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 28 changer transitions 0/270 dead transitions. [2024-06-03 19:28:23,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 270 transitions, 2957 flow [2024-06-03 19:28:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-03 19:28:23,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-03 19:28:23,568 INFO L175 Difference]: Start difference. First operand has 307 places, 251 transitions, 2339 flow. Second operand 11 states and 114 transitions. [2024-06-03 19:28:23,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 270 transitions, 2957 flow [2024-06-03 19:28:23,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 270 transitions, 2877 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:23,853 INFO L231 Difference]: Finished difference. Result has 309 places, 252 transitions, 2357 flow [2024-06-03 19:28:23,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2357, PETRI_PLACES=309, PETRI_TRANSITIONS=252} [2024-06-03 19:28:23,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-03 19:28:23,854 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 252 transitions, 2357 flow [2024-06-03 19:28:23,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:23,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:23,854 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 19:28:23,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-03 19:28:23,854 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 19:28:23,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1394247408, now seen corresponding path program 8 times [2024-06-03 19:28:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:23,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119307236] [2024-06-03 19:28:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:23,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:24,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:24,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119307236] [2024-06-03 19:28:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119307236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:24,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:24,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:24,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013879859] [2024-06-03 19:28:24,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:24,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:24,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:24,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:24,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:24,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:24,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 252 transitions, 2357 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:24,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:24,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:24,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:25,312 INFO L124 PetriNetUnfolderBase]: 684/1244 cut-off events. [2024-06-03 19:28:25,312 INFO L125 PetriNetUnfolderBase]: For 60186/60186 co-relation queries the response was YES. [2024-06-03 19:28:25,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7083 conditions, 1244 events. 684/1244 cut-off events. For 60186/60186 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6885 event pairs, 122 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 6938. Up to 1126 conditions per place. [2024-06-03 19:28:25,325 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 237 selfloop transitions, 34 changer transitions 0/273 dead transitions. [2024-06-03 19:28:25,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 273 transitions, 3187 flow [2024-06-03 19:28:25,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:25,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 19:28:25,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-03 19:28:25,326 INFO L175 Difference]: Start difference. First operand has 309 places, 252 transitions, 2357 flow. Second operand 11 states and 118 transitions. [2024-06-03 19:28:25,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 273 transitions, 3187 flow [2024-06-03 19:28:25,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 273 transitions, 3099 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:25,643 INFO L231 Difference]: Finished difference. Result has 311 places, 254 transitions, 2419 flow [2024-06-03 19:28:25,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2419, PETRI_PLACES=311, PETRI_TRANSITIONS=254} [2024-06-03 19:28:25,643 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-03 19:28:25,643 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 254 transitions, 2419 flow [2024-06-03 19:28:25,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:25,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:25,644 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 19:28:25,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-03 19:28:25,644 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 19:28:25,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1182371346, now seen corresponding path program 2 times [2024-06-03 19:28:25,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:25,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971643894] [2024-06-03 19:28:25,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:25,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:26,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:26,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971643894] [2024-06-03 19:28:26,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971643894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:26,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:26,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:26,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894960016] [2024-06-03 19:28:26,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:26,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:26,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:26,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:26,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:26,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 254 transitions, 2419 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:26,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:26,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:26,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:27,275 INFO L124 PetriNetUnfolderBase]: 687/1249 cut-off events. [2024-06-03 19:28:27,276 INFO L125 PetriNetUnfolderBase]: For 58377/58377 co-relation queries the response was YES. [2024-06-03 19:28:27,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 1249 events. 687/1249 cut-off events. For 58377/58377 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6896 event pairs, 124 based on Foata normal form. 1/1249 useless extension candidates. Maximal degree in co-relation 6997. Up to 1147 conditions per place. [2024-06-03 19:28:27,288 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 37 changer transitions 0/274 dead transitions. [2024-06-03 19:28:27,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 274 transitions, 3091 flow [2024-06-03 19:28:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 19:28:27,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-03 19:28:27,289 INFO L175 Difference]: Start difference. First operand has 311 places, 254 transitions, 2419 flow. Second operand 11 states and 117 transitions. [2024-06-03 19:28:27,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 274 transitions, 3091 flow [2024-06-03 19:28:27,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 274 transitions, 3005 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-03 19:28:27,607 INFO L231 Difference]: Finished difference. Result has 315 places, 256 transitions, 2495 flow [2024-06-03 19:28:27,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2495, PETRI_PLACES=315, PETRI_TRANSITIONS=256} [2024-06-03 19:28:27,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-03 19:28:27,608 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 256 transitions, 2495 flow [2024-06-03 19:28:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:27,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:27,608 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 19:28:27,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-03 19:28:27,608 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 19:28:27,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:27,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1394252058, now seen corresponding path program 9 times [2024-06-03 19:28:27,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:27,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162151169] [2024-06-03 19:28:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:27,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:28,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:28,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162151169] [2024-06-03 19:28:28,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162151169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:28,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:28,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:28,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238199272] [2024-06-03 19:28:28,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:28,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:28,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:28,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:28,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 256 transitions, 2495 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:28,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:28,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:28,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:29,182 INFO L124 PetriNetUnfolderBase]: 684/1244 cut-off events. [2024-06-03 19:28:29,183 INFO L125 PetriNetUnfolderBase]: For 55452/55452 co-relation queries the response was YES. [2024-06-03 19:28:29,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6945 conditions, 1244 events. 684/1244 cut-off events. For 55452/55452 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6901 event pairs, 123 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 6797. Up to 1145 conditions per place. [2024-06-03 19:28:29,196 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 238 selfloop transitions, 34 changer transitions 0/274 dead transitions. [2024-06-03 19:28:29,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 274 transitions, 3089 flow [2024-06-03 19:28:29,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 19:28:29,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-03 19:28:29,197 INFO L175 Difference]: Start difference. First operand has 315 places, 256 transitions, 2495 flow. Second operand 11 states and 116 transitions. [2024-06-03 19:28:29,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 274 transitions, 3089 flow [2024-06-03 19:28:29,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 274 transitions, 2929 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:29,478 INFO L231 Difference]: Finished difference. Result has 317 places, 256 transitions, 2408 flow [2024-06-03 19:28:29,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2408, PETRI_PLACES=317, PETRI_TRANSITIONS=256} [2024-06-03 19:28:29,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-03 19:28:29,478 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 256 transitions, 2408 flow [2024-06-03 19:28:29,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:29,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:29,492 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 19:28:29,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-03 19:28:29,492 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 19:28:29,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:29,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1509723152, now seen corresponding path program 2 times [2024-06-03 19:28:29,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:29,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374775212] [2024-06-03 19:28:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:29,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:30,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:30,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374775212] [2024-06-03 19:28:30,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374775212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:30,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:30,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:30,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643090665] [2024-06-03 19:28:30,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:30,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:30,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:30,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:30,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:30,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:30,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 256 transitions, 2408 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:30,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:30,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:30,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:31,169 INFO L124 PetriNetUnfolderBase]: 700/1281 cut-off events. [2024-06-03 19:28:31,169 INFO L125 PetriNetUnfolderBase]: For 82247/82247 co-relation queries the response was YES. [2024-06-03 19:28:31,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7072 conditions, 1281 events. 700/1281 cut-off events. For 82247/82247 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7124 event pairs, 131 based on Foata normal form. 10/1290 useless extension candidates. Maximal degree in co-relation 6923. Up to 1148 conditions per place. [2024-06-03 19:28:31,182 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 240 selfloop transitions, 27 changer transitions 11/280 dead transitions. [2024-06-03 19:28:31,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 280 transitions, 3106 flow [2024-06-03 19:28:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:28:31,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:28:31,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-03 19:28:31,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-03 19:28:31,183 INFO L175 Difference]: Start difference. First operand has 317 places, 256 transitions, 2408 flow. Second operand 12 states and 127 transitions. [2024-06-03 19:28:31,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 280 transitions, 3106 flow [2024-06-03 19:28:31,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 280 transitions, 3035 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-03 19:28:31,462 INFO L231 Difference]: Finished difference. Result has 319 places, 253 transitions, 2365 flow [2024-06-03 19:28:31,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2365, PETRI_PLACES=319, PETRI_TRANSITIONS=253} [2024-06-03 19:28:31,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-03 19:28:31,462 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 253 transitions, 2365 flow [2024-06-03 19:28:31,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:31,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:31,463 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 19:28:31,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-03 19:28:31,463 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 19:28:31,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash 409663658, now seen corresponding path program 10 times [2024-06-03 19:28:31,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:31,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082840393] [2024-06-03 19:28:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:31,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:32,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082840393] [2024-06-03 19:28:32,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082840393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:32,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:32,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:32,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412165841] [2024-06-03 19:28:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:32,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:32,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:32,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:32,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 253 transitions, 2365 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:32,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:32,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:32,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:32,921 INFO L124 PetriNetUnfolderBase]: 694/1274 cut-off events. [2024-06-03 19:28:32,921 INFO L125 PetriNetUnfolderBase]: For 92135/92135 co-relation queries the response was YES. [2024-06-03 19:28:32,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7088 conditions, 1274 events. 694/1274 cut-off events. For 92135/92135 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7103 event pairs, 167 based on Foata normal form. 12/1285 useless extension candidates. Maximal degree in co-relation 6938. Up to 1147 conditions per place. [2024-06-03 19:28:32,934 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 26 changer transitions 7/275 dead transitions. [2024-06-03 19:28:32,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 275 transitions, 3083 flow [2024-06-03 19:28:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 19:28:32,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-03 19:28:32,935 INFO L175 Difference]: Start difference. First operand has 319 places, 253 transitions, 2365 flow. Second operand 11 states and 118 transitions. [2024-06-03 19:28:32,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 275 transitions, 3083 flow [2024-06-03 19:28:33,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 275 transitions, 3013 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-03 19:28:33,283 INFO L231 Difference]: Finished difference. Result has 317 places, 251 transitions, 2362 flow [2024-06-03 19:28:33,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2362, PETRI_PLACES=317, PETRI_TRANSITIONS=251} [2024-06-03 19:28:33,283 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-03 19:28:33,283 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 251 transitions, 2362 flow [2024-06-03 19:28:33,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:33,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:33,284 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 19:28:33,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-03 19:28:33,284 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 19:28:33,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:33,285 INFO L85 PathProgramCache]: Analyzing trace with hash 808116726, now seen corresponding path program 3 times [2024-06-03 19:28:33,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:33,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397314682] [2024-06-03 19:28:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:33,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:34,057 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 19:28:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:34,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397314682] [2024-06-03 19:28:34,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397314682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:34,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:34,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:28:34,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590589219] [2024-06-03 19:28:34,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:34,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:28:34,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:34,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:28:34,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:28:34,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:34,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 251 transitions, 2362 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:34,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:34,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:34,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:34,533 INFO L124 PetriNetUnfolderBase]: 718/1326 cut-off events. [2024-06-03 19:28:34,533 INFO L125 PetriNetUnfolderBase]: For 120563/120563 co-relation queries the response was YES. [2024-06-03 19:28:34,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8461 conditions, 1326 events. 718/1326 cut-off events. For 120563/120563 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7417 event pairs, 177 based on Foata normal form. 8/1333 useless extension candidates. Maximal degree in co-relation 8311. Up to 1119 conditions per place. [2024-06-03 19:28:34,547 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 245 selfloop transitions, 22 changer transitions 8/277 dead transitions. [2024-06-03 19:28:34,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 277 transitions, 3314 flow [2024-06-03 19:28:34,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:34,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-03 19:28:34,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-03 19:28:34,548 INFO L175 Difference]: Start difference. First operand has 317 places, 251 transitions, 2362 flow. Second operand 11 states and 120 transitions. [2024-06-03 19:28:34,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 277 transitions, 3314 flow [2024-06-03 19:28:35,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 277 transitions, 3214 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-03 19:28:35,121 INFO L231 Difference]: Finished difference. Result has 317 places, 248 transitions, 2280 flow [2024-06-03 19:28:35,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2280, PETRI_PLACES=317, PETRI_TRANSITIONS=248} [2024-06-03 19:28:35,121 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-03 19:28:35,121 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 248 transitions, 2280 flow [2024-06-03 19:28:35,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:28:35,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:35,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:28:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-03 19:28:35,122 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 19:28:35,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash 232532138, now seen corresponding path program 11 times [2024-06-03 19:28:35,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:35,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674267838] [2024-06-03 19:28:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:35,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:36,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:36,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674267838] [2024-06-03 19:28:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674267838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:36,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882322737] [2024-06-03 19:28:36,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:36,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:36,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:36,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 248 transitions, 2280 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:36,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:36,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:36,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:36,806 INFO L124 PetriNetUnfolderBase]: 703/1294 cut-off events. [2024-06-03 19:28:36,806 INFO L125 PetriNetUnfolderBase]: For 102784/102784 co-relation queries the response was YES. [2024-06-03 19:28:36,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8263 conditions, 1294 events. 703/1294 cut-off events. For 102784/102784 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7177 event pairs, 139 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 8113. Up to 1184 conditions per place. [2024-06-03 19:28:36,819 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 37 changer transitions 0/267 dead transitions. [2024-06-03 19:28:36,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 267 transitions, 2902 flow [2024-06-03 19:28:36,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:36,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:36,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 19:28:36,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-03 19:28:36,820 INFO L175 Difference]: Start difference. First operand has 317 places, 248 transitions, 2280 flow. Second operand 11 states and 116 transitions. [2024-06-03 19:28:36,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 267 transitions, 2902 flow [2024-06-03 19:28:37,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 267 transitions, 2856 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:28:37,241 INFO L231 Difference]: Finished difference. Result has 315 places, 249 transitions, 2356 flow [2024-06-03 19:28:37,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2356, PETRI_PLACES=315, PETRI_TRANSITIONS=249} [2024-06-03 19:28:37,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-03 19:28:37,242 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 249 transitions, 2356 flow [2024-06-03 19:28:37,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:37,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:37,242 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 19:28:37,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-03 19:28:37,243 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 19:28:37,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash 232527488, now seen corresponding path program 12 times [2024-06-03 19:28:37,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836750481] [2024-06-03 19:28:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:37,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:38,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:38,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836750481] [2024-06-03 19:28:38,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836750481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:38,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:38,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:38,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002835985] [2024-06-03 19:28:38,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:38,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:38,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:38,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:38,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 249 transitions, 2356 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:38,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:38,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:38,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:38,941 INFO L124 PetriNetUnfolderBase]: 707/1302 cut-off events. [2024-06-03 19:28:38,942 INFO L125 PetriNetUnfolderBase]: For 103952/103952 co-relation queries the response was YES. [2024-06-03 19:28:38,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8421 conditions, 1302 events. 707/1302 cut-off events. For 103952/103952 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7245 event pairs, 139 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 8272. Up to 1178 conditions per place. [2024-06-03 19:28:38,956 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 228 selfloop transitions, 38 changer transitions 0/268 dead transitions. [2024-06-03 19:28:38,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 268 transitions, 2980 flow [2024-06-03 19:28:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 19:28:38,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-03 19:28:38,957 INFO L175 Difference]: Start difference. First operand has 315 places, 249 transitions, 2356 flow. Second operand 11 states and 117 transitions. [2024-06-03 19:28:38,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 268 transitions, 2980 flow [2024-06-03 19:28:39,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 268 transitions, 2868 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:39,381 INFO L231 Difference]: Finished difference. Result has 317 places, 250 transitions, 2370 flow [2024-06-03 19:28:39,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2370, PETRI_PLACES=317, PETRI_TRANSITIONS=250} [2024-06-03 19:28:39,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-03 19:28:39,382 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 250 transitions, 2370 flow [2024-06-03 19:28:39,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:39,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:39,382 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 19:28:39,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-03 19:28:39,382 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 19:28:39,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:39,383 INFO L85 PathProgramCache]: Analyzing trace with hash 635387826, now seen corresponding path program 4 times [2024-06-03 19:28:39,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:39,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325305454] [2024-06-03 19:28:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:39,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:40,536 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 19:28:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325305454] [2024-06-03 19:28:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325305454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:40,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:40,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:40,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617884357] [2024-06-03 19:28:40,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:40,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:40,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:40,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:40,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:40,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 250 transitions, 2370 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:40,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:40,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:40,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:41,082 INFO L124 PetriNetUnfolderBase]: 723/1338 cut-off events. [2024-06-03 19:28:41,083 INFO L125 PetriNetUnfolderBase]: For 134358/134358 co-relation queries the response was YES. [2024-06-03 19:28:41,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8617 conditions, 1338 events. 723/1338 cut-off events. For 134358/134358 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7488 event pairs, 145 based on Foata normal form. 10/1347 useless extension candidates. Maximal degree in co-relation 8467. Up to 1184 conditions per place. [2024-06-03 19:28:41,097 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 226 selfloop transitions, 35 changer transitions 11/274 dead transitions. [2024-06-03 19:28:41,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 274 transitions, 3056 flow [2024-06-03 19:28:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:28:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:28:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-03 19:28:41,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-03 19:28:41,099 INFO L175 Difference]: Start difference. First operand has 317 places, 250 transitions, 2370 flow. Second operand 12 states and 128 transitions. [2024-06-03 19:28:41,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 274 transitions, 3056 flow [2024-06-03 19:28:41,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 274 transitions, 2940 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:41,560 INFO L231 Difference]: Finished difference. Result has 320 places, 247 transitions, 2306 flow [2024-06-03 19:28:41,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2306, PETRI_PLACES=320, PETRI_TRANSITIONS=247} [2024-06-03 19:28:41,561 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-03 19:28:41,561 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 247 transitions, 2306 flow [2024-06-03 19:28:41,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:41,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:41,561 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 19:28:41,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-03 19:28:41,561 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 19:28:41,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:41,562 INFO L85 PathProgramCache]: Analyzing trace with hash 801441682, now seen corresponding path program 13 times [2024-06-03 19:28:41,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:41,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012830131] [2024-06-03 19:28:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:41,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:42,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:42,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:42,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012830131] [2024-06-03 19:28:42,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012830131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:42,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:42,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:42,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079875887] [2024-06-03 19:28:42,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:42,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:42,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:42,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:42,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:42,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:42,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 247 transitions, 2306 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:42,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:42,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:42,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:42,980 INFO L124 PetriNetUnfolderBase]: 694/1282 cut-off events. [2024-06-03 19:28:42,980 INFO L125 PetriNetUnfolderBase]: For 99482/99482 co-relation queries the response was YES. [2024-06-03 19:28:42,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8038 conditions, 1282 events. 694/1282 cut-off events. For 99482/99482 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7124 event pairs, 180 based on Foata normal form. 2/1283 useless extension candidates. Maximal degree in co-relation 7887. Up to 1206 conditions per place. [2024-06-03 19:28:42,995 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 26 changer transitions 0/265 dead transitions. [2024-06-03 19:28:42,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 265 transitions, 2924 flow [2024-06-03 19:28:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-03 19:28:42,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-03 19:28:42,996 INFO L175 Difference]: Start difference. First operand has 320 places, 247 transitions, 2306 flow. Second operand 11 states and 113 transitions. [2024-06-03 19:28:42,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 265 transitions, 2924 flow [2024-06-03 19:28:43,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 265 transitions, 2846 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:28:43,430 INFO L231 Difference]: Finished difference. Result has 318 places, 248 transitions, 2332 flow [2024-06-03 19:28:43,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2332, PETRI_PLACES=318, PETRI_TRANSITIONS=248} [2024-06-03 19:28:43,431 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-03 19:28:43,431 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 248 transitions, 2332 flow [2024-06-03 19:28:43,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:43,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:43,431 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 19:28:43,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-03 19:28:43,431 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 19:28:43,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:43,432 INFO L85 PathProgramCache]: Analyzing trace with hash 630619282, now seen corresponding path program 14 times [2024-06-03 19:28:43,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:43,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092936774] [2024-06-03 19:28:43,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:43,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:44,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:44,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092936774] [2024-06-03 19:28:44,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092936774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:44,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:44,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:44,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960694346] [2024-06-03 19:28:44,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:44,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:44,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:44,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:44,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:44,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:44,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 248 transitions, 2332 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:44,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:44,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:44,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:44,952 INFO L124 PetriNetUnfolderBase]: 698/1291 cut-off events. [2024-06-03 19:28:44,952 INFO L125 PetriNetUnfolderBase]: For 100432/100432 co-relation queries the response was YES. [2024-06-03 19:28:44,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8134 conditions, 1291 events. 698/1291 cut-off events. For 100432/100432 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7180 event pairs, 138 based on Foata normal form. 2/1292 useless extension candidates. Maximal degree in co-relation 7983. Up to 1181 conditions per place. [2024-06-03 19:28:44,966 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 230 selfloop transitions, 35 changer transitions 0/267 dead transitions. [2024-06-03 19:28:44,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 267 transitions, 2956 flow [2024-06-03 19:28:44,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-03 19:28:44,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-03 19:28:44,969 INFO L175 Difference]: Start difference. First operand has 318 places, 248 transitions, 2332 flow. Second operand 11 states and 114 transitions. [2024-06-03 19:28:44,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 267 transitions, 2956 flow [2024-06-03 19:28:45,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 267 transitions, 2862 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:45,452 INFO L231 Difference]: Finished difference. Result has 320 places, 249 transitions, 2362 flow [2024-06-03 19:28:45,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2362, PETRI_PLACES=320, PETRI_TRANSITIONS=249} [2024-06-03 19:28:45,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-03 19:28:45,453 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 249 transitions, 2362 flow [2024-06-03 19:28:45,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:45,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:45,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:28:45,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-03 19:28:45,454 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 19:28:45,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:45,454 INFO L85 PathProgramCache]: Analyzing trace with hash 801437032, now seen corresponding path program 15 times [2024-06-03 19:28:45,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:45,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185827234] [2024-06-03 19:28:45,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:45,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:46,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:46,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185827234] [2024-06-03 19:28:46,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185827234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:46,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:46,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:46,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086608914] [2024-06-03 19:28:46,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:46,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:46,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:46,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:46,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:46,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:46,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 249 transitions, 2362 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:46,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:46,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:46,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:46,853 INFO L124 PetriNetUnfolderBase]: 702/1298 cut-off events. [2024-06-03 19:28:46,853 INFO L125 PetriNetUnfolderBase]: For 103078/103078 co-relation queries the response was YES. [2024-06-03 19:28:46,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8210 conditions, 1298 events. 702/1298 cut-off events. For 103078/103078 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7270 event pairs, 184 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 8058. Up to 1202 conditions per place. [2024-06-03 19:28:46,868 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 28 changer transitions 0/267 dead transitions. [2024-06-03 19:28:46,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 267 transitions, 2986 flow [2024-06-03 19:28:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:28:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:28:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-03 19:28:46,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-03 19:28:46,870 INFO L175 Difference]: Start difference. First operand has 320 places, 249 transitions, 2362 flow. Second operand 11 states and 113 transitions. [2024-06-03 19:28:46,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 267 transitions, 2986 flow [2024-06-03 19:28:47,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 267 transitions, 2872 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:47,381 INFO L231 Difference]: Finished difference. Result has 322 places, 250 transitions, 2360 flow [2024-06-03 19:28:47,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2248, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2360, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2024-06-03 19:28:47,381 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-03 19:28:47,382 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 2360 flow [2024-06-03 19:28:47,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:47,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:47,382 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 19:28:47,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-03 19:28:47,382 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 19:28:47,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:47,382 INFO L85 PathProgramCache]: Analyzing trace with hash 801621606, now seen corresponding path program 5 times [2024-06-03 19:28:47,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:47,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563732874] [2024-06-03 19:28:47,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:48,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:48,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563732874] [2024-06-03 19:28:48,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563732874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:48,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:48,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:48,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146787902] [2024-06-03 19:28:48,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:48,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:48,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:48,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:48,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 2360 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:48,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:48,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:48,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:48,722 INFO L124 PetriNetUnfolderBase]: 718/1334 cut-off events. [2024-06-03 19:28:48,723 INFO L125 PetriNetUnfolderBase]: For 135162/135162 co-relation queries the response was YES. [2024-06-03 19:28:48,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8375 conditions, 1334 events. 718/1334 cut-off events. For 135162/135162 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7537 event pairs, 188 based on Foata normal form. 10/1343 useless extension candidates. Maximal degree in co-relation 8222. Up to 1212 conditions per place. [2024-06-03 19:28:48,737 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 20 changer transitions 16/273 dead transitions. [2024-06-03 19:28:48,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 273 transitions, 3040 flow [2024-06-03 19:28:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:28:48,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:28:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-03 19:28:48,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:28:48,738 INFO L175 Difference]: Start difference. First operand has 322 places, 250 transitions, 2360 flow. Second operand 12 states and 126 transitions. [2024-06-03 19:28:48,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 273 transitions, 3040 flow [2024-06-03 19:28:49,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 273 transitions, 2938 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:49,251 INFO L231 Difference]: Finished difference. Result has 325 places, 244 transitions, 2239 flow [2024-06-03 19:28:49,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2239, PETRI_PLACES=325, PETRI_TRANSITIONS=244} [2024-06-03 19:28:49,252 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-03 19:28:49,252 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 244 transitions, 2239 flow [2024-06-03 19:28:49,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:49,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:49,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:28:49,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-03 19:28:49,253 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 19:28:49,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:49,253 INFO L85 PathProgramCache]: Analyzing trace with hash 807877716, now seen corresponding path program 6 times [2024-06-03 19:28:49,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:49,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387217460] [2024-06-03 19:28:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:49,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:50,291 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 19:28:50,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:50,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387217460] [2024-06-03 19:28:50,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387217460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:50,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:50,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:50,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464217784] [2024-06-03 19:28:50,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:50,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:50,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:50,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:50,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:50,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:50,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 244 transitions, 2239 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:50,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:50,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:50,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:50,772 INFO L124 PetriNetUnfolderBase]: 669/1243 cut-off events. [2024-06-03 19:28:50,772 INFO L125 PetriNetUnfolderBase]: For 96860/96860 co-relation queries the response was YES. [2024-06-03 19:28:50,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6847 conditions, 1243 events. 669/1243 cut-off events. For 96860/96860 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6936 event pairs, 171 based on Foata normal form. 10/1252 useless extension candidates. Maximal degree in co-relation 6693. Up to 1137 conditions per place. [2024-06-03 19:28:50,785 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 232 selfloop transitions, 14 changer transitions 18/266 dead transitions. [2024-06-03 19:28:50,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 266 transitions, 2901 flow [2024-06-03 19:28:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:28:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:28:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-03 19:28:50,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-03 19:28:50,787 INFO L175 Difference]: Start difference. First operand has 325 places, 244 transitions, 2239 flow. Second operand 12 states and 122 transitions. [2024-06-03 19:28:50,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 266 transitions, 2901 flow [2024-06-03 19:28:51,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 266 transitions, 2847 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-03 19:28:51,174 INFO L231 Difference]: Finished difference. Result has 321 places, 237 transitions, 2144 flow [2024-06-03 19:28:51,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2144, PETRI_PLACES=321, PETRI_TRANSITIONS=237} [2024-06-03 19:28:51,175 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-03 19:28:51,175 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 237 transitions, 2144 flow [2024-06-03 19:28:51,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:51,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:51,176 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 19:28:51,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-03 19:28:51,176 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 19:28:51,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1048115336, now seen corresponding path program 16 times [2024-06-03 19:28:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137774079] [2024-06-03 19:28:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:52,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137774079] [2024-06-03 19:28:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137774079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:52,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:52,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:52,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856890621] [2024-06-03 19:28:52,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:52,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:52,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:52,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:52,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:52,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:52,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 237 transitions, 2144 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:52,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:52,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:52,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:52,848 INFO L124 PetriNetUnfolderBase]: 638/1182 cut-off events. [2024-06-03 19:28:52,849 INFO L125 PetriNetUnfolderBase]: For 64810/64810 co-relation queries the response was YES. [2024-06-03 19:28:52,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6513 conditions, 1182 events. 638/1182 cut-off events. For 64810/64810 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6552 event pairs, 116 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 6360. Up to 981 conditions per place. [2024-06-03 19:28:52,861 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 217 selfloop transitions, 36 changer transitions 0/255 dead transitions. [2024-06-03 19:28:52,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 255 transitions, 2740 flow [2024-06-03 19:28:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:28:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:28:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-03 19:28:52,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-03 19:28:52,862 INFO L175 Difference]: Start difference. First operand has 321 places, 237 transitions, 2144 flow. Second operand 10 states and 101 transitions. [2024-06-03 19:28:52,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 255 transitions, 2740 flow [2024-06-03 19:28:53,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 255 transitions, 2672 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-03 19:28:53,155 INFO L231 Difference]: Finished difference. Result has 309 places, 238 transitions, 2210 flow [2024-06-03 19:28:53,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2210, PETRI_PLACES=309, PETRI_TRANSITIONS=238} [2024-06-03 19:28:53,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-03 19:28:53,155 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 238 transitions, 2210 flow [2024-06-03 19:28:53,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:53,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:53,156 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 19:28:53,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-03 19:28:53,156 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 19:28:53,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash -990022886, now seen corresponding path program 17 times [2024-06-03 19:28:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:53,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312190382] [2024-06-03 19:28:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:53,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:54,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:54,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312190382] [2024-06-03 19:28:54,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312190382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:54,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:54,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:54,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626353936] [2024-06-03 19:28:54,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:54,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:54,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:54,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:54,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 238 transitions, 2210 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:54,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:54,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:54,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:54,948 INFO L124 PetriNetUnfolderBase]: 642/1190 cut-off events. [2024-06-03 19:28:54,949 INFO L125 PetriNetUnfolderBase]: For 62912/62912 co-relation queries the response was YES. [2024-06-03 19:28:54,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6632 conditions, 1190 events. 642/1190 cut-off events. For 62912/62912 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6610 event pairs, 130 based on Foata normal form. 2/1191 useless extension candidates. Maximal degree in co-relation 6484. Up to 1031 conditions per place. [2024-06-03 19:28:54,960 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 213 selfloop transitions, 41 changer transitions 0/256 dead transitions. [2024-06-03 19:28:54,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 256 transitions, 2808 flow [2024-06-03 19:28:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:28:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:28:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 19:28:54,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-03 19:28:54,961 INFO L175 Difference]: Start difference. First operand has 309 places, 238 transitions, 2210 flow. Second operand 10 states and 103 transitions. [2024-06-03 19:28:54,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 256 transitions, 2808 flow [2024-06-03 19:28:55,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 256 transitions, 2682 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-03 19:28:55,201 INFO L231 Difference]: Finished difference. Result has 310 places, 239 transitions, 2224 flow [2024-06-03 19:28:55,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2224, PETRI_PLACES=310, PETRI_TRANSITIONS=239} [2024-06-03 19:28:55,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-03 19:28:55,202 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 239 transitions, 2224 flow [2024-06-03 19:28:55,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:55,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:55,202 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 19:28:55,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-03 19:28:55,203 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 19:28:55,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:55,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1356913502, now seen corresponding path program 18 times [2024-06-03 19:28:55,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:55,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116036453] [2024-06-03 19:28:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:55,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:56,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:56,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116036453] [2024-06-03 19:28:56,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116036453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:56,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:56,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:56,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588141453] [2024-06-03 19:28:56,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:56,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:56,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:56,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:56,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:56,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:56,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 239 transitions, 2224 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:56,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:56,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:56,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:56,789 INFO L124 PetriNetUnfolderBase]: 653/1211 cut-off events. [2024-06-03 19:28:56,789 INFO L125 PetriNetUnfolderBase]: For 66602/66602 co-relation queries the response was YES. [2024-06-03 19:28:56,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6925 conditions, 1211 events. 653/1211 cut-off events. For 66602/66602 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6750 event pairs, 132 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 6777. Up to 983 conditions per place. [2024-06-03 19:28:56,801 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 200 selfloop transitions, 57 changer transitions 0/259 dead transitions. [2024-06-03 19:28:56,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 259 transitions, 3038 flow [2024-06-03 19:28:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:28:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:28:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 19:28:56,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-03 19:28:56,802 INFO L175 Difference]: Start difference. First operand has 310 places, 239 transitions, 2224 flow. Second operand 10 states and 107 transitions. [2024-06-03 19:28:56,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 259 transitions, 3038 flow [2024-06-03 19:28:57,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 259 transitions, 2908 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-03 19:28:57,106 INFO L231 Difference]: Finished difference. Result has 312 places, 241 transitions, 2306 flow [2024-06-03 19:28:57,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2306, PETRI_PLACES=312, PETRI_TRANSITIONS=241} [2024-06-03 19:28:57,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-03 19:28:57,107 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 241 transitions, 2306 flow [2024-06-03 19:28:57,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:57,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:57,107 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 19:28:57,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-03 19:28:57,107 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 19:28:57,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:57,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1356918338, now seen corresponding path program 3 times [2024-06-03 19:28:57,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:57,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519913421] [2024-06-03 19:28:57,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:57,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:28:58,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:28:58,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:28:58,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519913421] [2024-06-03 19:28:58,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519913421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:28:58,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:28:58,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:28:58,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207709517] [2024-06-03 19:28:58,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:28:58,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:28:58,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:28:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:28:58,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:28:58,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:28:58,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 241 transitions, 2306 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:58,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:28:58,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:28:58,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:28:59,085 INFO L124 PetriNetUnfolderBase]: 651/1208 cut-off events. [2024-06-03 19:28:59,085 INFO L125 PetriNetUnfolderBase]: For 57308/57308 co-relation queries the response was YES. [2024-06-03 19:28:59,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6749 conditions, 1208 events. 651/1208 cut-off events. For 57308/57308 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6731 event pairs, 141 based on Foata normal form. 1/1208 useless extension candidates. Maximal degree in co-relation 6600. Up to 1038 conditions per place. [2024-06-03 19:28:59,097 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 62 changer transitions 0/260 dead transitions. [2024-06-03 19:28:59,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 260 transitions, 2950 flow [2024-06-03 19:28:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:28:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:28:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:28:59,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:28:59,098 INFO L175 Difference]: Start difference. First operand has 312 places, 241 transitions, 2306 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:28:59,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 260 transitions, 2950 flow [2024-06-03 19:28:59,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 260 transitions, 2834 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-03 19:28:59,377 INFO L231 Difference]: Finished difference. Result has 314 places, 243 transitions, 2412 flow [2024-06-03 19:28:59,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2412, PETRI_PLACES=314, PETRI_TRANSITIONS=243} [2024-06-03 19:28:59,377 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-03 19:28:59,377 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 243 transitions, 2412 flow [2024-06-03 19:28:59,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:28:59,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:28:59,377 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 19:28:59,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-03 19:28:59,378 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 19:28:59,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:28:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1596830910, now seen corresponding path program 19 times [2024-06-03 19:28:59,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:28:59,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416512371] [2024-06-03 19:28:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:28:59,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:28:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:00,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:00,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416512371] [2024-06-03 19:29:00,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416512371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:00,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:00,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:00,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482387040] [2024-06-03 19:29:00,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:00,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:00,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:00,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:00,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:00,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:00,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 243 transitions, 2412 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:00,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:00,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:00,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:00,663 INFO L124 PetriNetUnfolderBase]: 648/1203 cut-off events. [2024-06-03 19:29:00,663 INFO L125 PetriNetUnfolderBase]: For 51465/51465 co-relation queries the response was YES. [2024-06-03 19:29:00,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6554 conditions, 1203 events. 648/1203 cut-off events. For 51465/51465 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6727 event pairs, 140 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 6405. Up to 1026 conditions per place. [2024-06-03 19:29:00,676 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 201 selfloop transitions, 57 changer transitions 0/260 dead transitions. [2024-06-03 19:29:00,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 260 transitions, 2974 flow [2024-06-03 19:29:00,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:00,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 19:29:00,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:29:00,677 INFO L175 Difference]: Start difference. First operand has 314 places, 243 transitions, 2412 flow. Second operand 10 states and 105 transitions. [2024-06-03 19:29:00,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 260 transitions, 2974 flow [2024-06-03 19:29:00,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 260 transitions, 2754 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:00,921 INFO L231 Difference]: Finished difference. Result has 316 places, 243 transitions, 2317 flow [2024-06-03 19:29:00,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2317, PETRI_PLACES=316, PETRI_TRANSITIONS=243} [2024-06-03 19:29:00,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-03 19:29:00,922 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 243 transitions, 2317 flow [2024-06-03 19:29:00,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:00,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:00,922 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 19:29:00,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-03 19:29:00,922 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 19:29:00,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:00,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1095263774, now seen corresponding path program 7 times [2024-06-03 19:29:00,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:00,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593180447] [2024-06-03 19:29:00,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:00,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:01,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:01,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593180447] [2024-06-03 19:29:01,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593180447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:01,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:01,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:01,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331623649] [2024-06-03 19:29:01,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:01,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:01,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:01,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:01,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:01,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:01,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 243 transitions, 2317 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:01,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:01,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:01,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:02,293 INFO L124 PetriNetUnfolderBase]: 676/1264 cut-off events. [2024-06-03 19:29:02,294 INFO L125 PetriNetUnfolderBase]: For 74905/74905 co-relation queries the response was YES. [2024-06-03 19:29:02,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6716 conditions, 1264 events. 676/1264 cut-off events. For 74905/74905 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7147 event pairs, 125 based on Foata normal form. 10/1273 useless extension candidates. Maximal degree in co-relation 6566. Up to 1057 conditions per place. [2024-06-03 19:29:02,305 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 212 selfloop transitions, 33 changer transitions 22/269 dead transitions. [2024-06-03 19:29:02,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 269 transitions, 3012 flow [2024-06-03 19:29:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 19:29:02,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-03 19:29:02,307 INFO L175 Difference]: Start difference. First operand has 316 places, 243 transitions, 2317 flow. Second operand 11 states and 118 transitions. [2024-06-03 19:29:02,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 269 transitions, 3012 flow [2024-06-03 19:29:02,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 269 transitions, 2871 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-03 19:29:02,579 INFO L231 Difference]: Finished difference. Result has 316 places, 234 transitions, 2166 flow [2024-06-03 19:29:02,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2166, PETRI_PLACES=316, PETRI_TRANSITIONS=234} [2024-06-03 19:29:02,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-03 19:29:02,580 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 234 transitions, 2166 flow [2024-06-03 19:29:02,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:02,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:02,580 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 19:29:02,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-03 19:29:02,581 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 19:29:02,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:02,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1124938360, now seen corresponding path program 20 times [2024-06-03 19:29:02,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:02,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848880743] [2024-06-03 19:29:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:03,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848880743] [2024-06-03 19:29:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848880743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:03,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:03,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681414124] [2024-06-03 19:29:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:03,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:03,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 234 transitions, 2166 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:03,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:03,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:03,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:04,010 INFO L124 PetriNetUnfolderBase]: 624/1168 cut-off events. [2024-06-03 19:29:04,010 INFO L125 PetriNetUnfolderBase]: For 47697/47697 co-relation queries the response was YES. [2024-06-03 19:29:04,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6164 conditions, 1168 events. 624/1168 cut-off events. For 47697/47697 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6524 event pairs, 113 based on Foata normal form. 2/1169 useless extension candidates. Maximal degree in co-relation 6015. Up to 1018 conditions per place. [2024-06-03 19:29:04,021 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 203 selfloop transitions, 46 changer transitions 0/251 dead transitions. [2024-06-03 19:29:04,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 251 transitions, 2744 flow [2024-06-03 19:29:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 19:29:04,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:29:04,022 INFO L175 Difference]: Start difference. First operand has 316 places, 234 transitions, 2166 flow. Second operand 10 states and 105 transitions. [2024-06-03 19:29:04,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 251 transitions, 2744 flow [2024-06-03 19:29:04,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 251 transitions, 2654 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:04,285 INFO L231 Difference]: Finished difference. Result has 309 places, 235 transitions, 2212 flow [2024-06-03 19:29:04,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2212, PETRI_PLACES=309, PETRI_TRANSITIONS=235} [2024-06-03 19:29:04,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-03 19:29:04,286 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 235 transitions, 2212 flow [2024-06-03 19:29:04,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:04,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:04,286 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 19:29:04,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-03 19:29:04,286 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 19:29:04,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:04,287 INFO L85 PathProgramCache]: Analyzing trace with hash 823203218, now seen corresponding path program 21 times [2024-06-03 19:29:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745243503] [2024-06-03 19:29:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:04,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:05,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:05,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745243503] [2024-06-03 19:29:05,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745243503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:05,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:05,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:05,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415627276] [2024-06-03 19:29:05,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:05,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:05,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:05,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:05,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:05,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 235 transitions, 2212 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:05,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:05,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:05,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:05,972 INFO L124 PetriNetUnfolderBase]: 628/1176 cut-off events. [2024-06-03 19:29:05,972 INFO L125 PetriNetUnfolderBase]: For 47361/47361 co-relation queries the response was YES. [2024-06-03 19:29:05,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6259 conditions, 1176 events. 628/1176 cut-off events. For 47361/47361 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6602 event pairs, 109 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 6112. Up to 998 conditions per place. [2024-06-03 19:29:05,988 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 202 selfloop transitions, 48 changer transitions 0/252 dead transitions. [2024-06-03 19:29:05,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 252 transitions, 2792 flow [2024-06-03 19:29:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-03 19:29:05,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-03 19:29:05,989 INFO L175 Difference]: Start difference. First operand has 309 places, 235 transitions, 2212 flow. Second operand 10 states and 106 transitions. [2024-06-03 19:29:05,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 252 transitions, 2792 flow [2024-06-03 19:29:06,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 252 transitions, 2658 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-03 19:29:06,259 INFO L231 Difference]: Finished difference. Result has 310 places, 236 transitions, 2220 flow [2024-06-03 19:29:06,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2220, PETRI_PLACES=310, PETRI_TRANSITIONS=236} [2024-06-03 19:29:06,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-03 19:29:06,259 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 236 transitions, 2220 flow [2024-06-03 19:29:06,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:06,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:06,260 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 19:29:06,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-03 19:29:06,260 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 19:29:06,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:06,260 INFO L85 PathProgramCache]: Analyzing trace with hash -947806840, now seen corresponding path program 22 times [2024-06-03 19:29:06,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:06,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570623285] [2024-06-03 19:29:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:06,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:07,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:07,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570623285] [2024-06-03 19:29:07,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570623285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:07,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:07,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:07,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617335909] [2024-06-03 19:29:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:07,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:07,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:07,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:07,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 236 transitions, 2220 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:07,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:07,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:07,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:07,731 INFO L124 PetriNetUnfolderBase]: 648/1219 cut-off events. [2024-06-03 19:29:07,731 INFO L125 PetriNetUnfolderBase]: For 75274/75274 co-relation queries the response was YES. [2024-06-03 19:29:07,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6466 conditions, 1219 events. 648/1219 cut-off events. For 75274/75274 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6838 event pairs, 163 based on Foata normal form. 12/1230 useless extension candidates. Maximal degree in co-relation 6319. Up to 1080 conditions per place. [2024-06-03 19:29:07,742 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 219 selfloop transitions, 28 changer transitions 7/256 dead transitions. [2024-06-03 19:29:07,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 256 transitions, 2876 flow [2024-06-03 19:29:07,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-03 19:29:07,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-03 19:29:07,743 INFO L175 Difference]: Start difference. First operand has 310 places, 236 transitions, 2220 flow. Second operand 10 states and 109 transitions. [2024-06-03 19:29:07,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 256 transitions, 2876 flow [2024-06-03 19:29:07,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 256 transitions, 2748 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:07,983 INFO L231 Difference]: Finished difference. Result has 312 places, 234 transitions, 2169 flow [2024-06-03 19:29:07,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2169, PETRI_PLACES=312, PETRI_TRANSITIONS=234} [2024-06-03 19:29:07,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-03 19:29:07,984 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 234 transitions, 2169 flow [2024-06-03 19:29:07,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:07,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:07,984 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 19:29:07,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-03 19:29:07,984 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 19:29:07,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:07,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1125058330, now seen corresponding path program 23 times [2024-06-03 19:29:07,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:07,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810157343] [2024-06-03 19:29:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:07,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:09,021 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 19:29:09,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:09,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810157343] [2024-06-03 19:29:09,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810157343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:09,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:09,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:09,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236072787] [2024-06-03 19:29:09,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:09,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:09,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:09,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:09,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 234 transitions, 2169 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:09,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:09,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:09,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:09,480 INFO L124 PetriNetUnfolderBase]: 628/1180 cut-off events. [2024-06-03 19:29:09,480 INFO L125 PetriNetUnfolderBase]: For 45841/45841 co-relation queries the response was YES. [2024-06-03 19:29:09,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6189 conditions, 1180 events. 628/1180 cut-off events. For 45841/45841 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6609 event pairs, 107 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 6041. Up to 1030 conditions per place. [2024-06-03 19:29:09,491 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 206 selfloop transitions, 43 changer transitions 0/251 dead transitions. [2024-06-03 19:29:09,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 251 transitions, 2743 flow [2024-06-03 19:29:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:09,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 19:29:09,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-03 19:29:09,492 INFO L175 Difference]: Start difference. First operand has 312 places, 234 transitions, 2169 flow. Second operand 10 states and 103 transitions. [2024-06-03 19:29:09,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 251 transitions, 2743 flow [2024-06-03 19:29:09,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 251 transitions, 2617 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:09,689 INFO L231 Difference]: Finished difference. Result has 312 places, 235 transitions, 2173 flow [2024-06-03 19:29:09,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2173, PETRI_PLACES=312, PETRI_TRANSITIONS=235} [2024-06-03 19:29:09,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-03 19:29:09,690 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 235 transitions, 2173 flow [2024-06-03 19:29:09,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:09,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:09,690 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 19:29:09,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-03 19:29:09,690 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 19:29:09,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:09,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1120289786, now seen corresponding path program 8 times [2024-06-03 19:29:09,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:09,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041188086] [2024-06-03 19:29:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:09,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:10,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:10,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041188086] [2024-06-03 19:29:10,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041188086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:10,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:10,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045836725] [2024-06-03 19:29:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:10,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:10,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:10,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:10,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 235 transitions, 2173 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:10,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:10,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:10,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:11,168 INFO L124 PetriNetUnfolderBase]: 644/1216 cut-off events. [2024-06-03 19:29:11,168 INFO L125 PetriNetUnfolderBase]: For 71703/71703 co-relation queries the response was YES. [2024-06-03 19:29:11,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 1216 events. 644/1216 cut-off events. For 71703/71703 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6872 event pairs, 123 based on Foata normal form. 10/1225 useless extension candidates. Maximal degree in co-relation 6200. Up to 1008 conditions per place. [2024-06-03 19:29:11,181 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 39 changer transitions 19/257 dead transitions. [2024-06-03 19:29:11,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 257 transitions, 2805 flow [2024-06-03 19:29:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-03 19:29:11,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-03 19:29:11,182 INFO L175 Difference]: Start difference. First operand has 312 places, 235 transitions, 2173 flow. Second operand 11 states and 118 transitions. [2024-06-03 19:29:11,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 257 transitions, 2805 flow [2024-06-03 19:29:11,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 257 transitions, 2687 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:11,391 INFO L231 Difference]: Finished difference. Result has 315 places, 226 transitions, 2070 flow [2024-06-03 19:29:11,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2070, PETRI_PLACES=315, PETRI_TRANSITIONS=226} [2024-06-03 19:29:11,391 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-03 19:29:11,392 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 226 transitions, 2070 flow [2024-06-03 19:29:11,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:11,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:11,392 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 19:29:11,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-03 19:29:11,392 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 19:29:11,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash -947560886, now seen corresponding path program 9 times [2024-06-03 19:29:11,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:11,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052319611] [2024-06-03 19:29:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:12,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:12,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052319611] [2024-06-03 19:29:12,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052319611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:12,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:12,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:29:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80624725] [2024-06-03 19:29:12,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:29:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:29:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:29:12,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:12,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 226 transitions, 2070 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:12,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:12,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:12,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:12,660 INFO L124 PetriNetUnfolderBase]: 646/1229 cut-off events. [2024-06-03 19:29:12,661 INFO L125 PetriNetUnfolderBase]: For 100204/100204 co-relation queries the response was YES. [2024-06-03 19:29:12,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7408 conditions, 1229 events. 646/1229 cut-off events. For 100204/100204 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6921 event pairs, 171 based on Foata normal form. 8/1236 useless extension candidates. Maximal degree in co-relation 7273. Up to 1010 conditions per place. [2024-06-03 19:29:12,673 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 216 selfloop transitions, 24 changer transitions 8/250 dead transitions. [2024-06-03 19:29:12,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 250 transitions, 2922 flow [2024-06-03 19:29:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:12,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-03 19:29:12,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-03 19:29:12,675 INFO L175 Difference]: Start difference. First operand has 315 places, 226 transitions, 2070 flow. Second operand 10 states and 111 transitions. [2024-06-03 19:29:12,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 250 transitions, 2922 flow [2024-06-03 19:29:13,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 250 transitions, 2790 flow, removed 27 selfloop flow, removed 12 redundant places. [2024-06-03 19:29:13,072 INFO L231 Difference]: Finished difference. Result has 305 places, 223 transitions, 2002 flow [2024-06-03 19:29:13,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=305, PETRI_TRANSITIONS=223} [2024-06-03 19:29:13,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-03 19:29:13,073 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 223 transitions, 2002 flow [2024-06-03 19:29:13,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:13,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:13,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:29:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-03 19:29:13,073 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 19:29:13,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash 393418338, now seen corresponding path program 10 times [2024-06-03 19:29:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355070588] [2024-06-03 19:29:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:13,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:13,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355070588] [2024-06-03 19:29:13,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355070588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:13,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:13,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:13,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136623621] [2024-06-03 19:29:13,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:13,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:13,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:13,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:14,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:14,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 223 transitions, 2002 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:14,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:14,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:14,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:14,425 INFO L124 PetriNetUnfolderBase]: 643/1224 cut-off events. [2024-06-03 19:29:14,425 INFO L125 PetriNetUnfolderBase]: For 96284/96284 co-relation queries the response was YES. [2024-06-03 19:29:14,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 1224 events. 643/1224 cut-off events. For 96284/96284 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6892 event pairs, 177 based on Foata normal form. 10/1233 useless extension candidates. Maximal degree in co-relation 7052. Up to 1090 conditions per place. [2024-06-03 19:29:14,440 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 20 changer transitions 17/244 dead transitions. [2024-06-03 19:29:14,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 244 transitions, 2594 flow [2024-06-03 19:29:14,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:14,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-03 19:29:14,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-03 19:29:14,456 INFO L175 Difference]: Start difference. First operand has 305 places, 223 transitions, 2002 flow. Second operand 11 states and 117 transitions. [2024-06-03 19:29:14,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 244 transitions, 2594 flow [2024-06-03 19:29:14,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 244 transitions, 2548 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 19:29:14,767 INFO L231 Difference]: Finished difference. Result has 304 places, 216 transitions, 1950 flow [2024-06-03 19:29:14,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1950, PETRI_PLACES=304, PETRI_TRANSITIONS=216} [2024-06-03 19:29:14,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-03 19:29:14,768 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 216 transitions, 1950 flow [2024-06-03 19:29:14,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:14,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:14,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:29:14,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-03 19:29:14,768 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 19:29:14,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:14,769 INFO L85 PathProgramCache]: Analyzing trace with hash -954235930, now seen corresponding path program 24 times [2024-06-03 19:29:14,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:14,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748045892] [2024-06-03 19:29:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:14,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:15,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:15,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748045892] [2024-06-03 19:29:15,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748045892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:15,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:15,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:15,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287096731] [2024-06-03 19:29:15,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:15,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:15,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:15,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:15,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:15,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:15,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 216 transitions, 1950 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:15,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:15,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:15,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:16,094 INFO L124 PetriNetUnfolderBase]: 605/1150 cut-off events. [2024-06-03 19:29:16,094 INFO L125 PetriNetUnfolderBase]: For 67274/67274 co-relation queries the response was YES. [2024-06-03 19:29:16,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 1150 events. 605/1150 cut-off events. For 67274/67274 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6410 event pairs, 172 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 6532. Up to 1079 conditions per place. [2024-06-03 19:29:16,105 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 24 changer transitions 0/232 dead transitions. [2024-06-03 19:29:16,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 232 transitions, 2482 flow [2024-06-03 19:29:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 19:29:16,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-03 19:29:16,106 INFO L175 Difference]: Start difference. First operand has 304 places, 216 transitions, 1950 flow. Second operand 10 states and 102 transitions. [2024-06-03 19:29:16,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 232 transitions, 2482 flow [2024-06-03 19:29:16,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 232 transitions, 2426 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-03 19:29:16,429 INFO L231 Difference]: Finished difference. Result has 295 places, 217 transitions, 1980 flow [2024-06-03 19:29:16,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1980, PETRI_PLACES=295, PETRI_TRANSITIONS=217} [2024-06-03 19:29:16,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-03 19:29:16,430 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 217 transitions, 1980 flow [2024-06-03 19:29:16,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:16,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:16,430 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 19:29:16,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-03 19:29:16,431 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 19:29:16,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:16,449 INFO L85 PathProgramCache]: Analyzing trace with hash -954240580, now seen corresponding path program 25 times [2024-06-03 19:29:16,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:16,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665816631] [2024-06-03 19:29:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:17,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:17,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:17,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665816631] [2024-06-03 19:29:17,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665816631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:17,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:17,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:17,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765476340] [2024-06-03 19:29:17,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:17,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:17,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:17,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:17,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:17,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 217 transitions, 1980 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:17,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:17,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:17,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:17,864 INFO L124 PetriNetUnfolderBase]: 609/1158 cut-off events. [2024-06-03 19:29:17,864 INFO L125 PetriNetUnfolderBase]: For 60990/60990 co-relation queries the response was YES. [2024-06-03 19:29:17,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6646 conditions, 1158 events. 609/1158 cut-off events. For 60990/60990 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6484 event pairs, 170 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 6520. Up to 1059 conditions per place. [2024-06-03 19:29:17,874 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 27 changer transitions 0/233 dead transitions. [2024-06-03 19:29:17,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 233 transitions, 2512 flow [2024-06-03 19:29:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 19:29:17,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-03 19:29:17,875 INFO L175 Difference]: Start difference. First operand has 295 places, 217 transitions, 1980 flow. Second operand 10 states and 103 transitions. [2024-06-03 19:29:17,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 233 transitions, 2512 flow [2024-06-03 19:29:18,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 233 transitions, 2438 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:18,120 INFO L231 Difference]: Finished difference. Result has 297 places, 218 transitions, 2000 flow [2024-06-03 19:29:18,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2000, PETRI_PLACES=297, PETRI_TRANSITIONS=218} [2024-06-03 19:29:18,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-03 19:29:18,128 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 218 transitions, 2000 flow [2024-06-03 19:29:18,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:18,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:18,129 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 19:29:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-03 19:29:18,129 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 19:29:18,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:18,129 INFO L85 PathProgramCache]: Analyzing trace with hash -954056006, now seen corresponding path program 11 times [2024-06-03 19:29:18,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:18,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729629467] [2024-06-03 19:29:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:18,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:19,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:19,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729629467] [2024-06-03 19:29:19,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729629467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:19,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:19,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:19,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883896432] [2024-06-03 19:29:19,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:19,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:19,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:19,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:19,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 218 transitions, 2000 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:19,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:19,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:19,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:19,379 INFO L124 PetriNetUnfolderBase]: 596/1135 cut-off events. [2024-06-03 19:29:19,379 INFO L125 PetriNetUnfolderBase]: For 57234/57234 co-relation queries the response was YES. [2024-06-03 19:29:19,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5833 conditions, 1135 events. 596/1135 cut-off events. For 57234/57234 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6358 event pairs, 159 based on Foata normal form. 10/1144 useless extension candidates. Maximal degree in co-relation 5706. Up to 1018 conditions per place. [2024-06-03 19:29:19,388 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 202 selfloop transitions, 18 changer transitions 16/238 dead transitions. [2024-06-03 19:29:19,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 238 transitions, 2574 flow [2024-06-03 19:29:19,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-03 19:29:19,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-03 19:29:19,389 INFO L175 Difference]: Start difference. First operand has 297 places, 218 transitions, 2000 flow. Second operand 11 states and 112 transitions. [2024-06-03 19:29:19,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 238 transitions, 2574 flow [2024-06-03 19:29:19,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 238 transitions, 2492 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:19,576 INFO L231 Difference]: Finished difference. Result has 300 places, 212 transitions, 1913 flow [2024-06-03 19:29:19,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1913, PETRI_PLACES=300, PETRI_TRANSITIONS=212} [2024-06-03 19:29:19,576 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-03 19:29:19,577 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 212 transitions, 1913 flow [2024-06-03 19:29:19,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:19,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:19,577 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 19:29:19,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-03 19:29:19,577 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 19:29:19,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:19,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1212680260, now seen corresponding path program 26 times [2024-06-03 19:29:19,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:19,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093849157] [2024-06-03 19:29:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:20,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:20,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093849157] [2024-06-03 19:29:20,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093849157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:20,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:20,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:20,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618832317] [2024-06-03 19:29:20,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:20,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:20,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:20,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:20,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:20,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:20,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 212 transitions, 1913 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:20,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:20,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:20,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:21,032 INFO L124 PetriNetUnfolderBase]: 580/1112 cut-off events. [2024-06-03 19:29:21,032 INFO L125 PetriNetUnfolderBase]: For 62268/62268 co-relation queries the response was YES. [2024-06-03 19:29:21,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 1112 events. 580/1112 cut-off events. For 62268/62268 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6200 event pairs, 120 based on Foata normal form. 12/1119 useless extension candidates. Maximal degree in co-relation 5563. Up to 698 conditions per place. [2024-06-03 19:29:21,043 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 93 changer transitions 7/232 dead transitions. [2024-06-03 19:29:21,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 232 transitions, 2507 flow [2024-06-03 19:29:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-03 19:29:21,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-03 19:29:21,045 INFO L175 Difference]: Start difference. First operand has 300 places, 212 transitions, 1913 flow. Second operand 10 states and 120 transitions. [2024-06-03 19:29:21,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 232 transitions, 2507 flow [2024-06-03 19:29:21,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 232 transitions, 2451 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-03 19:29:21,234 INFO L231 Difference]: Finished difference. Result has 292 places, 210 transitions, 2069 flow [2024-06-03 19:29:21,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2069, PETRI_PLACES=292, PETRI_TRANSITIONS=210} [2024-06-03 19:29:21,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-03 19:29:21,234 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 210 transitions, 2069 flow [2024-06-03 19:29:21,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:21,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:21,235 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 19:29:21,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-03 19:29:21,235 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 19:29:21,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:21,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1637632120, now seen corresponding path program 27 times [2024-06-03 19:29:21,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:21,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508654237] [2024-06-03 19:29:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:22,313 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 19:29:22,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:22,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508654237] [2024-06-03 19:29:22,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508654237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:22,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:22,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:22,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855516660] [2024-06-03 19:29:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:22,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:22,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:22,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:22,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:22,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 210 transitions, 2069 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:22,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:22,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:22,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:22,762 INFO L124 PetriNetUnfolderBase]: 558/1070 cut-off events. [2024-06-03 19:29:22,762 INFO L125 PetriNetUnfolderBase]: For 35462/35462 co-relation queries the response was YES. [2024-06-03 19:29:22,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5670 conditions, 1070 events. 558/1070 cut-off events. For 35462/35462 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5978 event pairs, 114 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 5545. Up to 916 conditions per place. [2024-06-03 19:29:22,773 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 44 changer transitions 0/225 dead transitions. [2024-06-03 19:29:22,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 225 transitions, 2581 flow [2024-06-03 19:29:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-03 19:29:22,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-03 19:29:22,774 INFO L175 Difference]: Start difference. First operand has 292 places, 210 transitions, 2069 flow. Second operand 10 states and 104 transitions. [2024-06-03 19:29:22,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 225 transitions, 2581 flow [2024-06-03 19:29:22,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 225 transitions, 2354 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:22,911 INFO L231 Difference]: Finished difference. Result has 291 places, 211 transitions, 1966 flow [2024-06-03 19:29:22,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1966, PETRI_PLACES=291, PETRI_TRANSITIONS=211} [2024-06-03 19:29:22,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-03 19:29:22,912 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 211 transitions, 1966 flow [2024-06-03 19:29:22,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:22,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:22,912 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 19:29:22,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-03 19:29:22,912 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 19:29:22,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:22,913 INFO L85 PathProgramCache]: Analyzing trace with hash 675176584, now seen corresponding path program 28 times [2024-06-03 19:29:22,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:22,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549744375] [2024-06-03 19:29:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:22,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:23,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:23,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549744375] [2024-06-03 19:29:23,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549744375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:23,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:23,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:23,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162628560] [2024-06-03 19:29:23,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:23,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:23,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:23,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:23,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:23,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:23,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 211 transitions, 1966 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:23,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:23,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:23,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:24,276 INFO L124 PetriNetUnfolderBase]: 562/1078 cut-off events. [2024-06-03 19:29:24,276 INFO L125 PetriNetUnfolderBase]: For 35501/35501 co-relation queries the response was YES. [2024-06-03 19:29:24,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5557 conditions, 1078 events. 562/1078 cut-off events. For 35501/35501 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6045 event pairs, 150 based on Foata normal form. 2/1077 useless extension candidates. Maximal degree in co-relation 5433. Up to 877 conditions per place. [2024-06-03 19:29:24,286 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 167 selfloop transitions, 57 changer transitions 0/226 dead transitions. [2024-06-03 19:29:24,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 226 transitions, 2484 flow [2024-06-03 19:29:24,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:24,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-03 19:29:24,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-03 19:29:24,287 INFO L175 Difference]: Start difference. First operand has 291 places, 211 transitions, 1966 flow. Second operand 10 states and 110 transitions. [2024-06-03 19:29:24,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 226 transitions, 2484 flow [2024-06-03 19:29:24,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 226 transitions, 2370 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:24,430 INFO L231 Difference]: Finished difference. Result has 293 places, 212 transitions, 2004 flow [2024-06-03 19:29:24,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2004, PETRI_PLACES=293, PETRI_TRANSITIONS=212} [2024-06-03 19:29:24,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-03 19:29:24,431 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 212 transitions, 2004 flow [2024-06-03 19:29:24,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:24,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:24,431 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 19:29:24,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-03 19:29:24,431 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:24,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:24,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1041977830, now seen corresponding path program 29 times [2024-06-03 19:29:24,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:24,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982558537] [2024-06-03 19:29:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:24,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:25,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:25,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982558537] [2024-06-03 19:29:25,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982558537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:25,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:25,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:25,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514816528] [2024-06-03 19:29:25,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:25,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:25,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:25,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:25,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:25,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:25,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 212 transitions, 2004 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:25,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:25,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:25,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:25,994 INFO L124 PetriNetUnfolderBase]: 566/1086 cut-off events. [2024-06-03 19:29:25,994 INFO L125 PetriNetUnfolderBase]: For 36522/36522 co-relation queries the response was YES. [2024-06-03 19:29:26,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5641 conditions, 1086 events. 566/1086 cut-off events. For 36522/36522 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6099 event pairs, 154 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 5516. Up to 991 conditions per place. [2024-06-03 19:29:26,007 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 33 changer transitions 0/226 dead transitions. [2024-06-03 19:29:26,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 226 transitions, 2520 flow [2024-06-03 19:29:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 19:29:26,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:29:26,008 INFO L175 Difference]: Start difference. First operand has 293 places, 212 transitions, 2004 flow. Second operand 10 states and 105 transitions. [2024-06-03 19:29:26,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 226 transitions, 2520 flow [2024-06-03 19:29:26,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 226 transitions, 2378 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:26,169 INFO L231 Difference]: Finished difference. Result has 295 places, 213 transitions, 1968 flow [2024-06-03 19:29:26,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1968, PETRI_PLACES=295, PETRI_TRANSITIONS=213} [2024-06-03 19:29:26,169 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-03 19:29:26,169 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 213 transitions, 1968 flow [2024-06-03 19:29:26,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:26,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:26,170 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 19:29:26,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-03 19:29:26,170 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:26,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:26,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1041797906, now seen corresponding path program 12 times [2024-06-03 19:29:26,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:26,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562280381] [2024-06-03 19:29:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:26,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:27,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:27,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562280381] [2024-06-03 19:29:27,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562280381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:27,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:27,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:27,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827866680] [2024-06-03 19:29:27,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:27,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:27,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:27,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:27,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:27,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 213 transitions, 1968 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:27,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:27,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:27,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:27,799 INFO L124 PetriNetUnfolderBase]: 582/1122 cut-off events. [2024-06-03 19:29:27,800 INFO L125 PetriNetUnfolderBase]: For 55765/55765 co-relation queries the response was YES. [2024-06-03 19:29:27,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5706 conditions, 1122 events. 582/1122 cut-off events. For 55765/55765 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6303 event pairs, 158 based on Foata normal form. 10/1129 useless extension candidates. Maximal degree in co-relation 5580. Up to 1008 conditions per place. [2024-06-03 19:29:27,810 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 24 changer transitions 11/231 dead transitions. [2024-06-03 19:29:27,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 231 transitions, 2514 flow [2024-06-03 19:29:27,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:27,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:27,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-03 19:29:27,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-03 19:29:27,811 INFO L175 Difference]: Start difference. First operand has 295 places, 213 transitions, 1968 flow. Second operand 11 states and 113 transitions. [2024-06-03 19:29:27,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 231 transitions, 2514 flow [2024-06-03 19:29:27,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 231 transitions, 2418 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:27,976 INFO L231 Difference]: Finished difference. Result has 298 places, 210 transitions, 1902 flow [2024-06-03 19:29:27,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1902, PETRI_PLACES=298, PETRI_TRANSITIONS=210} [2024-06-03 19:29:27,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-03 19:29:27,978 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 210 transitions, 1902 flow [2024-06-03 19:29:27,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:27,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:27,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:29:27,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-03 19:29:27,978 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:27,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:27,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1212800230, now seen corresponding path program 30 times [2024-06-03 19:29:27,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:27,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992284124] [2024-06-03 19:29:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:27,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:29,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:29,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992284124] [2024-06-03 19:29:29,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992284124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:29,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:29,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:29,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437818893] [2024-06-03 19:29:29,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:29,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:29,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:29,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:29,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 210 transitions, 1902 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:29,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:29,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:29,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:29,789 INFO L124 PetriNetUnfolderBase]: 560/1080 cut-off events. [2024-06-03 19:29:29,789 INFO L125 PetriNetUnfolderBase]: For 38017/38017 co-relation queries the response was YES. [2024-06-03 19:29:29,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5491 conditions, 1080 events. 560/1080 cut-off events. For 38017/38017 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6078 event pairs, 112 based on Foata normal form. 2/1077 useless extension candidates. Maximal degree in co-relation 5364. Up to 940 conditions per place. [2024-06-03 19:29:29,800 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 181 selfloop transitions, 42 changer transitions 0/225 dead transitions. [2024-06-03 19:29:29,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 225 transitions, 2418 flow [2024-06-03 19:29:29,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-03 19:29:29,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-03 19:29:29,801 INFO L175 Difference]: Start difference. First operand has 298 places, 210 transitions, 1902 flow. Second operand 10 states and 102 transitions. [2024-06-03 19:29:29,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 225 transitions, 2418 flow [2024-06-03 19:29:29,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 225 transitions, 2366 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:29,982 INFO L231 Difference]: Finished difference. Result has 295 places, 211 transitions, 1976 flow [2024-06-03 19:29:29,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1976, PETRI_PLACES=295, PETRI_TRANSITIONS=211} [2024-06-03 19:29:29,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-03 19:29:29,983 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 211 transitions, 1976 flow [2024-06-03 19:29:29,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:29,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:29,983 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 19:29:29,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-03 19:29:29,984 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:29,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1035548740, now seen corresponding path program 31 times [2024-06-03 19:29:29,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:29,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52235868] [2024-06-03 19:29:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:29,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:31,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:31,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52235868] [2024-06-03 19:29:31,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52235868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:31,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:31,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:31,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745050174] [2024-06-03 19:29:31,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:31,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:31,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:31,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:31,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:31,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:31,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 211 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:31,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:31,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:31,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:31,416 INFO L124 PetriNetUnfolderBase]: 580/1124 cut-off events. [2024-06-03 19:29:31,416 INFO L125 PetriNetUnfolderBase]: For 61427/61427 co-relation queries the response was YES. [2024-06-03 19:29:31,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 1124 events. 580/1124 cut-off events. For 61427/61427 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6354 event pairs, 162 based on Foata normal form. 12/1133 useless extension candidates. Maximal degree in co-relation 5661. Up to 995 conditions per place. [2024-06-03 19:29:31,427 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 193 selfloop transitions, 27 changer transitions 7/229 dead transitions. [2024-06-03 19:29:31,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 229 transitions, 2554 flow [2024-06-03 19:29:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-03 19:29:31,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-03 19:29:31,428 INFO L175 Difference]: Start difference. First operand has 295 places, 211 transitions, 1976 flow. Second operand 10 states and 108 transitions. [2024-06-03 19:29:31,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 229 transitions, 2554 flow [2024-06-03 19:29:31,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 229 transitions, 2438 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:31,585 INFO L231 Difference]: Finished difference. Result has 297 places, 209 transitions, 1937 flow [2024-06-03 19:29:31,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1937, PETRI_PLACES=297, PETRI_TRANSITIONS=209} [2024-06-03 19:29:31,585 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-03 19:29:31,585 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 209 transitions, 1937 flow [2024-06-03 19:29:31,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:31,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:31,585 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 19:29:31,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-03 19:29:31,586 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:31,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:31,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1041982480, now seen corresponding path program 32 times [2024-06-03 19:29:31,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:31,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336650006] [2024-06-03 19:29:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:31,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:32,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:32,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336650006] [2024-06-03 19:29:32,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336650006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:32,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:32,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:32,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38210099] [2024-06-03 19:29:32,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:32,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:32,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:32,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:32,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 209 transitions, 1937 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:32,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:32,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:32,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:32,996 INFO L124 PetriNetUnfolderBase]: 560/1084 cut-off events. [2024-06-03 19:29:32,996 INFO L125 PetriNetUnfolderBase]: For 38901/38901 co-relation queries the response was YES. [2024-06-03 19:29:33,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5581 conditions, 1084 events. 560/1084 cut-off events. For 38901/38901 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6119 event pairs, 158 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 5454. Up to 983 conditions per place. [2024-06-03 19:29:33,006 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 29 changer transitions 0/223 dead transitions. [2024-06-03 19:29:33,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 223 transitions, 2451 flow [2024-06-03 19:29:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-03 19:29:33,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-03 19:29:33,007 INFO L175 Difference]: Start difference. First operand has 297 places, 209 transitions, 1937 flow. Second operand 10 states and 104 transitions. [2024-06-03 19:29:33,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 223 transitions, 2451 flow [2024-06-03 19:29:33,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 223 transitions, 2354 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:33,157 INFO L231 Difference]: Finished difference. Result has 297 places, 210 transitions, 1944 flow [2024-06-03 19:29:33,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1944, PETRI_PLACES=297, PETRI_TRANSITIONS=210} [2024-06-03 19:29:33,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-03 19:29:33,157 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 210 transitions, 1944 flow [2024-06-03 19:29:33,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:33,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:33,157 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 19:29:33,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-03 19:29:33,158 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:33,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1072309426, now seen corresponding path program 33 times [2024-06-03 19:29:33,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:33,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134636525] [2024-06-03 19:29:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:33,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:34,156 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 19:29:34,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:34,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134636525] [2024-06-03 19:29:34,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134636525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:34,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:34,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:34,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316597026] [2024-06-03 19:29:34,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:34,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:34,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:34,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:34,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 210 transitions, 1944 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:34,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:34,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:34,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:34,586 INFO L124 PetriNetUnfolderBase]: 593/1151 cut-off events. [2024-06-03 19:29:34,586 INFO L125 PetriNetUnfolderBase]: For 65215/65215 co-relation queries the response was YES. [2024-06-03 19:29:34,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 1151 events. 593/1151 cut-off events. For 65215/65215 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6517 event pairs, 167 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 6466. Up to 868 conditions per place. [2024-06-03 19:29:34,597 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 55 changer transitions 0/230 dead transitions. [2024-06-03 19:29:34,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 230 transitions, 2676 flow [2024-06-03 19:29:34,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:34,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 19:29:34,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-03 19:29:34,598 INFO L175 Difference]: Start difference. First operand has 297 places, 210 transitions, 1944 flow. Second operand 10 states and 115 transitions. [2024-06-03 19:29:34,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 230 transitions, 2676 flow [2024-06-03 19:29:34,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 230 transitions, 2582 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-03 19:29:34,806 INFO L231 Difference]: Finished difference. Result has 299 places, 211 transitions, 2006 flow [2024-06-03 19:29:34,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2006, PETRI_PLACES=299, PETRI_TRANSITIONS=211} [2024-06-03 19:29:34,807 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-03 19:29:34,807 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 211 transitions, 2006 flow [2024-06-03 19:29:34,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:34,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:34,807 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 19:29:34,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-03 19:29:34,807 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:34,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:34,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1035541796, now seen corresponding path program 13 times [2024-06-03 19:29:34,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:34,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278906233] [2024-06-03 19:29:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:34,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:35,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:35,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278906233] [2024-06-03 19:29:35,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278906233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:35,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:35,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:35,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400560640] [2024-06-03 19:29:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:35,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:35,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:35,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:35,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:35,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 211 transitions, 2006 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:35,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:35,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:35,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:36,212 INFO L124 PetriNetUnfolderBase]: 609/1187 cut-off events. [2024-06-03 19:29:36,213 INFO L125 PetriNetUnfolderBase]: For 86731/86731 co-relation queries the response was YES. [2024-06-03 19:29:36,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6776 conditions, 1187 events. 609/1187 cut-off events. For 86731/86731 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6768 event pairs, 183 based on Foata normal form. 10/1194 useless extension candidates. Maximal degree in co-relation 6648. Up to 1060 conditions per place. [2024-06-03 19:29:36,225 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 21 changer transitions 16/230 dead transitions. [2024-06-03 19:29:36,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 230 transitions, 2554 flow [2024-06-03 19:29:36,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:36,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:36,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-03 19:29:36,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-03 19:29:36,226 INFO L175 Difference]: Start difference. First operand has 299 places, 211 transitions, 2006 flow. Second operand 11 states and 116 transitions. [2024-06-03 19:29:36,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 230 transitions, 2554 flow [2024-06-03 19:29:36,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 230 transitions, 2358 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-03 19:29:36,494 INFO L231 Difference]: Finished difference. Result has 301 places, 205 transitions, 1819 flow [2024-06-03 19:29:36,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1819, PETRI_PLACES=301, PETRI_TRANSITIONS=205} [2024-06-03 19:29:36,495 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-03 19:29:36,495 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 205 transitions, 1819 flow [2024-06-03 19:29:36,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:36,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:36,495 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 19:29:36,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-03 19:29:36,495 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:36,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:36,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1035302786, now seen corresponding path program 14 times [2024-06-03 19:29:36,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:36,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027293508] [2024-06-03 19:29:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:36,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:37,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027293508] [2024-06-03 19:29:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027293508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:37,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:37,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:29:37,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216430015] [2024-06-03 19:29:37,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:37,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:29:37,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:29:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:29:37,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:37,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 205 transitions, 1819 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:37,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:37,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:37,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:37,777 INFO L124 PetriNetUnfolderBase]: 602/1182 cut-off events. [2024-06-03 19:29:37,777 INFO L125 PetriNetUnfolderBase]: For 98785/98785 co-relation queries the response was YES. [2024-06-03 19:29:37,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6898 conditions, 1182 events. 602/1182 cut-off events. For 98785/98785 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6722 event pairs, 190 based on Foata normal form. 8/1187 useless extension candidates. Maximal degree in co-relation 6771. Up to 1040 conditions per place. [2024-06-03 19:29:37,788 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 194 selfloop transitions, 19 changer transitions 9/224 dead transitions. [2024-06-03 19:29:37,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 224 transitions, 2499 flow [2024-06-03 19:29:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-03 19:29:37,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-03 19:29:37,816 INFO L175 Difference]: Start difference. First operand has 301 places, 205 transitions, 1819 flow. Second operand 10 states and 107 transitions. [2024-06-03 19:29:37,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 224 transitions, 2499 flow [2024-06-03 19:29:38,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 224 transitions, 2439 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-03 19:29:38,205 INFO L231 Difference]: Finished difference. Result has 294 places, 201 transitions, 1787 flow [2024-06-03 19:29:38,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1787, PETRI_PLACES=294, PETRI_TRANSITIONS=201} [2024-06-03 19:29:38,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-03 19:29:38,205 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 201 transitions, 1787 flow [2024-06-03 19:29:38,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:38,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:38,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:29:38,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-03 19:29:38,206 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:38,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:38,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1065875686, now seen corresponding path program 34 times [2024-06-03 19:29:38,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:38,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536336711] [2024-06-03 19:29:38,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:38,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:39,319 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 19:29:39,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:39,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536336711] [2024-06-03 19:29:39,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536336711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:39,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:39,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:39,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603882753] [2024-06-03 19:29:39,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:39,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:39,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:39,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:39,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:39,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:39,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 201 transitions, 1787 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:39,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:39,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:39,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:39,800 INFO L124 PetriNetUnfolderBase]: 602/1182 cut-off events. [2024-06-03 19:29:39,801 INFO L125 PetriNetUnfolderBase]: For 101848/101848 co-relation queries the response was YES. [2024-06-03 19:29:39,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6871 conditions, 1182 events. 602/1182 cut-off events. For 101848/101848 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6709 event pairs, 188 based on Foata normal form. 12/1191 useless extension candidates. Maximal degree in co-relation 6747. Up to 973 conditions per place. [2024-06-03 19:29:39,811 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 42 changer transitions 7/220 dead transitions. [2024-06-03 19:29:39,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 220 transitions, 2350 flow [2024-06-03 19:29:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:39,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-03 19:29:39,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-03 19:29:39,812 INFO L175 Difference]: Start difference. First operand has 294 places, 201 transitions, 1787 flow. Second operand 10 states and 115 transitions. [2024-06-03 19:29:39,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 220 transitions, 2350 flow [2024-06-03 19:29:40,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 220 transitions, 2299 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:40,125 INFO L231 Difference]: Finished difference. Result has 290 places, 199 transitions, 1848 flow [2024-06-03 19:29:40,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1740, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1848, PETRI_PLACES=290, PETRI_TRANSITIONS=199} [2024-06-03 19:29:40,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-03 19:29:40,126 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 199 transitions, 1848 flow [2024-06-03 19:29:40,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:40,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:40,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:29:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-03 19:29:40,126 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:40,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:40,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1072124852, now seen corresponding path program 15 times [2024-06-03 19:29:40,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:40,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091230189] [2024-06-03 19:29:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:40,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:41,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:41,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091230189] [2024-06-03 19:29:41,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091230189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:41,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:41,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:41,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409049044] [2024-06-03 19:29:41,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:41,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:41,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:41,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:41,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:41,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:41,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 199 transitions, 1848 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:41,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:41,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:41,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:41,511 INFO L124 PetriNetUnfolderBase]: 594/1170 cut-off events. [2024-06-03 19:29:41,512 INFO L125 PetriNetUnfolderBase]: For 91834/91834 co-relation queries the response was YES. [2024-06-03 19:29:41,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6789 conditions, 1170 events. 594/1170 cut-off events. For 91834/91834 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6664 event pairs, 188 based on Foata normal form. 10/1177 useless extension candidates. Maximal degree in co-relation 6667. Up to 963 conditions per place. [2024-06-03 19:29:41,522 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 161 selfloop transitions, 40 changer transitions 16/219 dead transitions. [2024-06-03 19:29:41,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 219 transitions, 2374 flow [2024-06-03 19:29:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-03 19:29:41,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-03 19:29:41,523 INFO L175 Difference]: Start difference. First operand has 290 places, 199 transitions, 1848 flow. Second operand 11 states and 123 transitions. [2024-06-03 19:29:41,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 219 transitions, 2374 flow [2024-06-03 19:29:41,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 219 transitions, 2252 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:41,875 INFO L231 Difference]: Finished difference. Result has 291 places, 193 transitions, 1774 flow [2024-06-03 19:29:41,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1774, PETRI_PLACES=291, PETRI_TRANSITIONS=193} [2024-06-03 19:29:41,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-03 19:29:41,876 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 193 transitions, 1774 flow [2024-06-03 19:29:41,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:41,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:41,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:29:41,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-03 19:29:41,876 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:41,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1065629732, now seen corresponding path program 16 times [2024-06-03 19:29:41,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:41,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436107070] [2024-06-03 19:29:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:41,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:42,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:42,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436107070] [2024-06-03 19:29:42,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436107070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:42,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:42,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:29:42,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511773170] [2024-06-03 19:29:42,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:42,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:29:42,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:29:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:29:42,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:42,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 193 transitions, 1774 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:42,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:42,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:42,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:43,054 INFO L124 PetriNetUnfolderBase]: 599/1189 cut-off events. [2024-06-03 19:29:43,054 INFO L125 PetriNetUnfolderBase]: For 112451/112451 co-relation queries the response was YES. [2024-06-03 19:29:43,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7537 conditions, 1189 events. 599/1189 cut-off events. For 112451/112451 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6791 event pairs, 201 based on Foata normal form. 8/1194 useless extension candidates. Maximal degree in co-relation 7415. Up to 937 conditions per place. [2024-06-03 19:29:43,066 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 171 selfloop transitions, 34 changer transitions 8/215 dead transitions. [2024-06-03 19:29:43,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 215 transitions, 2466 flow [2024-06-03 19:29:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-03 19:29:43,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-03 19:29:43,067 INFO L175 Difference]: Start difference. First operand has 291 places, 193 transitions, 1774 flow. Second operand 10 states and 117 transitions. [2024-06-03 19:29:43,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 215 transitions, 2466 flow [2024-06-03 19:29:43,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 215 transitions, 2368 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-03 19:29:43,401 INFO L231 Difference]: Finished difference. Result has 284 places, 190 transitions, 1738 flow [2024-06-03 19:29:43,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1738, PETRI_PLACES=284, PETRI_TRANSITIONS=190} [2024-06-03 19:29:43,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-03 19:29:43,402 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 190 transitions, 1738 flow [2024-06-03 19:29:43,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:43,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:43,402 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 19:29:43,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-03 19:29:43,402 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:43,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:43,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1065868742, now seen corresponding path program 17 times [2024-06-03 19:29:43,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:43,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116987624] [2024-06-03 19:29:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:43,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:44,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:44,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116987624] [2024-06-03 19:29:44,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116987624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:44,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:44,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:44,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972382211] [2024-06-03 19:29:44,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:44,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:44,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:44,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:44,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 190 transitions, 1738 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:44,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:44,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:44,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:44,815 INFO L124 PetriNetUnfolderBase]: 567/1125 cut-off events. [2024-06-03 19:29:44,815 INFO L125 PetriNetUnfolderBase]: For 86002/86002 co-relation queries the response was YES. [2024-06-03 19:29:44,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6478 conditions, 1125 events. 567/1125 cut-off events. For 86002/86002 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6356 event pairs, 190 based on Foata normal form. 10/1132 useless extension candidates. Maximal degree in co-relation 6359. Up to 937 conditions per place. [2024-06-03 19:29:44,825 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 30 changer transitions 18/209 dead transitions. [2024-06-03 19:29:44,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 209 transitions, 2240 flow [2024-06-03 19:29:44,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:44,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:44,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-03 19:29:44,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-03 19:29:44,826 INFO L175 Difference]: Start difference. First operand has 284 places, 190 transitions, 1738 flow. Second operand 11 states and 119 transitions. [2024-06-03 19:29:44,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 209 transitions, 2240 flow [2024-06-03 19:29:45,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 209 transitions, 2169 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:45,077 INFO L231 Difference]: Finished difference. Result has 282 places, 183 transitions, 1687 flow [2024-06-03 19:29:45,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1687, PETRI_PLACES=282, PETRI_TRANSITIONS=183} [2024-06-03 19:29:45,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-03 19:29:45,077 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 183 transitions, 1687 flow [2024-06-03 19:29:45,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:45,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:45,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:29:45,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-03 19:29:45,078 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:45,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1408829314, now seen corresponding path program 18 times [2024-06-03 19:29:45,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:45,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160237274] [2024-06-03 19:29:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:45,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:45,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:45,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:45,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160237274] [2024-06-03 19:29:45,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160237274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:45,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:45,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:29:45,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769753773] [2024-06-03 19:29:45,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:45,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:29:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:45,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:29:45,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:29:45,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:45,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 183 transitions, 1687 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:45,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:45,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:45,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:46,277 INFO L124 PetriNetUnfolderBase]: 566/1130 cut-off events. [2024-06-03 19:29:46,277 INFO L125 PetriNetUnfolderBase]: For 92883/92883 co-relation queries the response was YES. [2024-06-03 19:29:46,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6998 conditions, 1130 events. 566/1130 cut-off events. For 92883/92883 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6377 event pairs, 249 based on Foata normal form. 8/1137 useless extension candidates. Maximal degree in co-relation 6881. Up to 874 conditions per place. [2024-06-03 19:29:46,288 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 176 selfloop transitions, 17 changer transitions 10/205 dead transitions. [2024-06-03 19:29:46,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 205 transitions, 2345 flow [2024-06-03 19:29:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-03 19:29:46,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-03 19:29:46,289 INFO L175 Difference]: Start difference. First operand has 282 places, 183 transitions, 1687 flow. Second operand 11 states and 115 transitions. [2024-06-03 19:29:46,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 205 transitions, 2345 flow [2024-06-03 19:29:46,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 205 transitions, 2261 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-03 19:29:46,557 INFO L231 Difference]: Finished difference. Result has 273 places, 180 transitions, 1633 flow [2024-06-03 19:29:46,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1633, PETRI_PLACES=273, PETRI_TRANSITIONS=180} [2024-06-03 19:29:46,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-03 19:29:46,558 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 180 transitions, 1633 flow [2024-06-03 19:29:46,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:46,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:46,558 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 19:29:46,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-03 19:29:46,558 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:46,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:46,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1418957014, now seen corresponding path program 19 times [2024-06-03 19:29:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632793197] [2024-06-03 19:29:46,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:46,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:47,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:47,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632793197] [2024-06-03 19:29:47,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632793197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:47,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:47,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:29:47,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783891287] [2024-06-03 19:29:47,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:47,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:29:47,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:47,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:29:47,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:29:47,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:47,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 180 transitions, 1633 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:47,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:47,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:47,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:47,896 INFO L124 PetriNetUnfolderBase]: 528/1056 cut-off events. [2024-06-03 19:29:47,896 INFO L125 PetriNetUnfolderBase]: For 67777/67777 co-relation queries the response was YES. [2024-06-03 19:29:47,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 1056 events. 528/1056 cut-off events. For 67777/67777 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5904 event pairs, 237 based on Foata normal form. 12/1067 useless extension candidates. Maximal degree in co-relation 5666. Up to 953 conditions per place. [2024-06-03 19:29:47,904 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 18 changer transitions 7/196 dead transitions. [2024-06-03 19:29:47,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 196 transitions, 2099 flow [2024-06-03 19:29:47,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-03 19:29:47,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-03 19:29:47,905 INFO L175 Difference]: Start difference. First operand has 273 places, 180 transitions, 1633 flow. Second operand 10 states and 103 transitions. [2024-06-03 19:29:47,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 196 transitions, 2099 flow [2024-06-03 19:29:48,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 196 transitions, 2045 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:48,101 INFO L231 Difference]: Finished difference. Result has 269 places, 177 transitions, 1597 flow [2024-06-03 19:29:48,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1597, PETRI_PLACES=269, PETRI_TRANSITIONS=177} [2024-06-03 19:29:48,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-03 19:29:48,101 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 177 transitions, 1597 flow [2024-06-03 19:29:48,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:48,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:48,102 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 19:29:48,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-03 19:29:48,102 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:48,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1418948644, now seen corresponding path program 20 times [2024-06-03 19:29:48,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:48,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51821467] [2024-06-03 19:29:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:48,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:48,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51821467] [2024-06-03 19:29:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51821467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-03 19:29:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036086125] [2024-06-03 19:29:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:48,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-03 19:29:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-03 19:29:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-03 19:29:49,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:49,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 177 transitions, 1597 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:49,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:49,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:49,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:49,364 INFO L124 PetriNetUnfolderBase]: 516/1036 cut-off events. [2024-06-03 19:29:49,364 INFO L125 PetriNetUnfolderBase]: For 56060/56060 co-relation queries the response was YES. [2024-06-03 19:29:49,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5629 conditions, 1036 events. 516/1036 cut-off events. For 56060/56060 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5790 event pairs, 229 based on Foata normal form. 8/1043 useless extension candidates. Maximal degree in co-relation 5518. Up to 874 conditions per place. [2024-06-03 19:29:49,371 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 172 selfloop transitions, 13 changer transitions 10/197 dead transitions. [2024-06-03 19:29:49,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 197 transitions, 2223 flow [2024-06-03 19:29:49,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:29:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:29:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-03 19:29:49,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-03 19:29:49,372 INFO L175 Difference]: Start difference. First operand has 269 places, 177 transitions, 1597 flow. Second operand 10 states and 105 transitions. [2024-06-03 19:29:49,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 197 transitions, 2223 flow [2024-06-03 19:29:49,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 197 transitions, 2111 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-03 19:29:49,531 INFO L231 Difference]: Finished difference. Result has 267 places, 172 transitions, 1489 flow [2024-06-03 19:29:49,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1489, PETRI_PLACES=267, PETRI_TRANSITIONS=172} [2024-06-03 19:29:49,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-03 19:29:49,531 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 172 transitions, 1489 flow [2024-06-03 19:29:49,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:49,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:49,532 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 19:29:49,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-03 19:29:49,532 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:49,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:49,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1704287524, now seen corresponding path program 21 times [2024-06-03 19:29:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401567424] [2024-06-03 19:29:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:49,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:50,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:50,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401567424] [2024-06-03 19:29:50,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401567424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:50,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:50,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-03 19:29:50,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509419636] [2024-06-03 19:29:50,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:50,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:29:50,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:50,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:29:50,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:29:50,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:50,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 172 transitions, 1489 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:50,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:50,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:50,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:50,974 INFO L124 PetriNetUnfolderBase]: 481/967 cut-off events. [2024-06-03 19:29:50,974 INFO L125 PetriNetUnfolderBase]: For 44040/44040 co-relation queries the response was YES. [2024-06-03 19:29:50,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4647 conditions, 967 events. 481/967 cut-off events. For 44040/44040 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5328 event pairs, 218 based on Foata normal form. 10/976 useless extension candidates. Maximal degree in co-relation 4536. Up to 874 conditions per place. [2024-06-03 19:29:50,980 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 8 changer transitions 20/189 dead transitions. [2024-06-03 19:29:50,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 189 transitions, 1943 flow [2024-06-03 19:29:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-03 19:29:50,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-03 19:29:50,982 INFO L175 Difference]: Start difference. First operand has 267 places, 172 transitions, 1489 flow. Second operand 11 states and 106 transitions. [2024-06-03 19:29:50,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 189 transitions, 1943 flow [2024-06-03 19:29:51,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 189 transitions, 1898 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:29:51,095 INFO L231 Difference]: Finished difference. Result has 263 places, 164 transitions, 1421 flow [2024-06-03 19:29:51,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1421, PETRI_PLACES=263, PETRI_TRANSITIONS=164} [2024-06-03 19:29:51,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-03 19:29:51,096 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 164 transitions, 1421 flow [2024-06-03 19:29:51,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 19:29:51,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:51,096 INFO L208 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 19:29:51,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-03 19:29:51,096 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:51,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:51,097 INFO L85 PathProgramCache]: Analyzing trace with hash -264538056, now seen corresponding path program 1 times [2024-06-03 19:29:51,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:51,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652939153] [2024-06-03 19:29:51,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:51,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:52,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:52,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652939153] [2024-06-03 19:29:52,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652939153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:52,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:52,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:29:52,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467115723] [2024-06-03 19:29:52,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:52,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:29:52,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:52,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:29:52,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:29:52,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:52,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 164 transitions, 1421 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:52,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:52,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:52,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:52,625 INFO L124 PetriNetUnfolderBase]: 453/914 cut-off events. [2024-06-03 19:29:52,625 INFO L125 PetriNetUnfolderBase]: For 35968/35968 co-relation queries the response was YES. [2024-06-03 19:29:52,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4366 conditions, 914 events. 453/914 cut-off events. For 35968/35968 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4998 event pairs, 108 based on Foata normal form. 6/919 useless extension candidates. Maximal degree in co-relation 4257. Up to 761 conditions per place. [2024-06-03 19:29:52,633 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 22 changer transitions 18/186 dead transitions. [2024-06-03 19:29:52,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 186 transitions, 1847 flow [2024-06-03 19:29:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:29:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:29:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-03 19:29:52,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-03 19:29:52,634 INFO L175 Difference]: Start difference. First operand has 263 places, 164 transitions, 1421 flow. Second operand 11 states and 112 transitions. [2024-06-03 19:29:52,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 186 transitions, 1847 flow [2024-06-03 19:29:52,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 186 transitions, 1817 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-03 19:29:52,726 INFO L231 Difference]: Finished difference. Result has 252 places, 158 transitions, 1392 flow [2024-06-03 19:29:52,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1392, PETRI_PLACES=252, PETRI_TRANSITIONS=158} [2024-06-03 19:29:52,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-03 19:29:52,727 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 158 transitions, 1392 flow [2024-06-03 19:29:52,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:52,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:52,727 INFO L208 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 19:29:52,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-03 19:29:52,727 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:52,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:52,728 INFO L85 PathProgramCache]: Analyzing trace with hash -342239616, now seen corresponding path program 2 times [2024-06-03 19:29:52,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:52,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10623574] [2024-06-03 19:29:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:52,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:54,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:54,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10623574] [2024-06-03 19:29:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10623574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:54,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:54,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:29:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784325320] [2024-06-03 19:29:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:54,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:29:54,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:54,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:29:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:29:54,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:54,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 158 transitions, 1392 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:54,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:54,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:54,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:54,567 INFO L124 PetriNetUnfolderBase]: 432/869 cut-off events. [2024-06-03 19:29:54,568 INFO L125 PetriNetUnfolderBase]: For 31515/31515 co-relation queries the response was YES. [2024-06-03 19:29:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4179 conditions, 869 events. 432/869 cut-off events. For 31515/31515 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4649 event pairs, 125 based on Foata normal form. 6/874 useless extension candidates. Maximal degree in co-relation 4074. Up to 753 conditions per place. [2024-06-03 19:29:54,574 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 20 changer transitions 18/181 dead transitions. [2024-06-03 19:29:54,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 181 transitions, 1810 flow [2024-06-03 19:29:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:29:54,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:29:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-03 19:29:54,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-03 19:29:54,575 INFO L175 Difference]: Start difference. First operand has 252 places, 158 transitions, 1392 flow. Second operand 12 states and 120 transitions. [2024-06-03 19:29:54,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 181 transitions, 1810 flow [2024-06-03 19:29:54,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 181 transitions, 1753 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:29:54,669 INFO L231 Difference]: Finished difference. Result has 245 places, 153 transitions, 1330 flow [2024-06-03 19:29:54,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1330, PETRI_PLACES=245, PETRI_TRANSITIONS=153} [2024-06-03 19:29:54,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-03 19:29:54,669 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 153 transitions, 1330 flow [2024-06-03 19:29:54,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:54,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:54,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:29:54,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-03 19:29:54,670 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:54,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash -599320684, now seen corresponding path program 3 times [2024-06-03 19:29:54,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:54,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709617546] [2024-06-03 19:29:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:54,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:55,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:55,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709617546] [2024-06-03 19:29:55,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709617546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:55,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:55,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:29:55,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740064683] [2024-06-03 19:29:55,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:55,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:29:55,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:55,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:29:55,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:29:56,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:56,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 153 transitions, 1330 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:56,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:56,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:56,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:56,368 INFO L124 PetriNetUnfolderBase]: 412/831 cut-off events. [2024-06-03 19:29:56,368 INFO L125 PetriNetUnfolderBase]: For 31348/31348 co-relation queries the response was YES. [2024-06-03 19:29:56,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 831 events. 412/831 cut-off events. For 31348/31348 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4391 event pairs, 109 based on Foata normal form. 6/836 useless extension candidates. Maximal degree in co-relation 3897. Up to 716 conditions per place. [2024-06-03 19:29:56,373 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 22 changer transitions 15/175 dead transitions. [2024-06-03 19:29:56,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 175 transitions, 1734 flow [2024-06-03 19:29:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:29:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:29:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-03 19:29:56,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-03 19:29:56,374 INFO L175 Difference]: Start difference. First operand has 245 places, 153 transitions, 1330 flow. Second operand 12 states and 119 transitions. [2024-06-03 19:29:56,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 175 transitions, 1734 flow [2024-06-03 19:29:56,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 175 transitions, 1684 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:29:56,470 INFO L231 Difference]: Finished difference. Result has 237 places, 148 transitions, 1277 flow [2024-06-03 19:29:56,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1277, PETRI_PLACES=237, PETRI_TRANSITIONS=148} [2024-06-03 19:29:56,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-03 19:29:56,471 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 148 transitions, 1277 flow [2024-06-03 19:29:56,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:56,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:56,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:29:56,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-03 19:29:56,471 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:56,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash -235572574, now seen corresponding path program 4 times [2024-06-03 19:29:56,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:56,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297502507] [2024-06-03 19:29:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:56,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:57,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297502507] [2024-06-03 19:29:57,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297502507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:57,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:57,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:29:57,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763843781] [2024-06-03 19:29:57,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:57,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:29:57,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:57,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:29:57,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:29:57,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:57,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 148 transitions, 1277 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:57,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:57,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:57,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:29:58,177 INFO L124 PetriNetUnfolderBase]: 396/803 cut-off events. [2024-06-03 19:29:58,178 INFO L125 PetriNetUnfolderBase]: For 30956/30956 co-relation queries the response was YES. [2024-06-03 19:29:58,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 803 events. 396/803 cut-off events. For 30956/30956 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4207 event pairs, 97 based on Foata normal form. 6/808 useless extension candidates. Maximal degree in co-relation 3767. Up to 676 conditions per place. [2024-06-03 19:29:58,183 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 23 changer transitions 14/170 dead transitions. [2024-06-03 19:29:58,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 170 transitions, 1673 flow [2024-06-03 19:29:58,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:29:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:29:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-03 19:29:58,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-03 19:29:58,184 INFO L175 Difference]: Start difference. First operand has 237 places, 148 transitions, 1277 flow. Second operand 12 states and 121 transitions. [2024-06-03 19:29:58,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 170 transitions, 1673 flow [2024-06-03 19:29:58,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 170 transitions, 1621 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:29:58,281 INFO L231 Difference]: Finished difference. Result has 231 places, 142 transitions, 1215 flow [2024-06-03 19:29:58,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1215, PETRI_PLACES=231, PETRI_TRANSITIONS=142} [2024-06-03 19:29:58,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-03 19:29:58,281 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 142 transitions, 1215 flow [2024-06-03 19:29:58,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:58,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:29:58,282 INFO L208 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 19:29:58,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-03 19:29:58,282 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:29:58,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:29:58,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1966841963, now seen corresponding path program 1 times [2024-06-03 19:29:58,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:29:58,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736730713] [2024-06-03 19:29:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:29:58,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:29:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:29:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:29:59,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:29:59,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736730713] [2024-06-03 19:29:59,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736730713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:29:59,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:29:59,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:29:59,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64456359] [2024-06-03 19:29:59,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:29:59,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:29:59,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:29:59,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:29:59,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:29:59,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:29:59,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 142 transitions, 1215 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:29:59,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:29:59,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:29:59,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:00,269 INFO L124 PetriNetUnfolderBase]: 382/777 cut-off events. [2024-06-03 19:30:00,269 INFO L125 PetriNetUnfolderBase]: For 34314/34314 co-relation queries the response was YES. [2024-06-03 19:30:00,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3786 conditions, 777 events. 382/777 cut-off events. For 34314/34314 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4056 event pairs, 102 based on Foata normal form. 8/784 useless extension candidates. Maximal degree in co-relation 3691. Up to 675 conditions per place. [2024-06-03 19:30:00,275 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 128 selfloop transitions, 22 changer transitions 9/161 dead transitions. [2024-06-03 19:30:00,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 161 transitions, 1613 flow [2024-06-03 19:30:00,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:30:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:30:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-03 19:30:00,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-03 19:30:00,276 INFO L175 Difference]: Start difference. First operand has 231 places, 142 transitions, 1215 flow. Second operand 12 states and 117 transitions. [2024-06-03 19:30:00,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 161 transitions, 1613 flow [2024-06-03 19:30:00,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 161 transitions, 1557 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-03 19:30:00,362 INFO L231 Difference]: Finished difference. Result has 225 places, 139 transitions, 1185 flow [2024-06-03 19:30:00,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1185, PETRI_PLACES=225, PETRI_TRANSITIONS=139} [2024-06-03 19:30:00,362 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-03 19:30:00,362 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 139 transitions, 1185 flow [2024-06-03 19:30:00,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:00,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:00,363 INFO L208 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 19:30:00,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-03 19:30:00,363 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:00,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash -222656734, now seen corresponding path program 5 times [2024-06-03 19:30:00,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:00,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611377703] [2024-06-03 19:30:00,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:00,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:01,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:01,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611377703] [2024-06-03 19:30:01,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611377703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:01,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:01,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:01,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018733938] [2024-06-03 19:30:01,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:01,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:01,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:01,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:01,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 139 transitions, 1185 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:01,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:01,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:01,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:02,246 INFO L124 PetriNetUnfolderBase]: 373/762 cut-off events. [2024-06-03 19:30:02,246 INFO L125 PetriNetUnfolderBase]: For 31180/31180 co-relation queries the response was YES. [2024-06-03 19:30:02,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 762 events. 373/762 cut-off events. For 31180/31180 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3958 event pairs, 97 based on Foata normal form. 6/767 useless extension candidates. Maximal degree in co-relation 3569. Up to 665 conditions per place. [2024-06-03 19:30:02,251 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 15 changer transitions 20/156 dead transitions. [2024-06-03 19:30:02,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 156 transitions, 1539 flow [2024-06-03 19:30:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-03 19:30:02,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-03 19:30:02,252 INFO L175 Difference]: Start difference. First operand has 225 places, 139 transitions, 1185 flow. Second operand 11 states and 108 transitions. [2024-06-03 19:30:02,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 156 transitions, 1539 flow [2024-06-03 19:30:02,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 156 transitions, 1489 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-03 19:30:02,334 INFO L231 Difference]: Finished difference. Result has 222 places, 129 transitions, 1084 flow [2024-06-03 19:30:02,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1084, PETRI_PLACES=222, PETRI_TRANSITIONS=129} [2024-06-03 19:30:02,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-03 19:30:02,335 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 129 transitions, 1084 flow [2024-06-03 19:30:02,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:02,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:02,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:02,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-03 19:30:02,336 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:02,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:02,336 INFO L85 PathProgramCache]: Analyzing trace with hash -590370078, now seen corresponding path program 6 times [2024-06-03 19:30:02,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:02,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018574734] [2024-06-03 19:30:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:02,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:03,705 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 19:30:03,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:03,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018574734] [2024-06-03 19:30:03,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018574734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:03,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:03,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:03,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700700143] [2024-06-03 19:30:03,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:03,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:03,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:03,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:03,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:03,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:03,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 129 transitions, 1084 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:03,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:03,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:03,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:04,138 INFO L124 PetriNetUnfolderBase]: 359/726 cut-off events. [2024-06-03 19:30:04,138 INFO L125 PetriNetUnfolderBase]: For 31040/31040 co-relation queries the response was YES. [2024-06-03 19:30:04,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 726 events. 359/726 cut-off events. For 31040/31040 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3710 event pairs, 85 based on Foata normal form. 6/731 useless extension candidates. Maximal degree in co-relation 3412. Up to 627 conditions per place. [2024-06-03 19:30:04,143 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 14 changer transitions 18/151 dead transitions. [2024-06-03 19:30:04,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 151 transitions, 1440 flow [2024-06-03 19:30:04,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:30:04,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:30:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-03 19:30:04,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-03 19:30:04,144 INFO L175 Difference]: Start difference. First operand has 222 places, 129 transitions, 1084 flow. Second operand 12 states and 119 transitions. [2024-06-03 19:30:04,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 151 transitions, 1440 flow [2024-06-03 19:30:04,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 151 transitions, 1341 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-03 19:30:04,234 INFO L231 Difference]: Finished difference. Result has 207 places, 124 transitions, 970 flow [2024-06-03 19:30:04,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=970, PETRI_PLACES=207, PETRI_TRANSITIONS=124} [2024-06-03 19:30:04,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-03 19:30:04,235 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 124 transitions, 970 flow [2024-06-03 19:30:04,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:04,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:04,235 INFO L208 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 19:30:04,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-03 19:30:04,235 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:04,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:04,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1997470096, now seen corresponding path program 7 times [2024-06-03 19:30:04,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:04,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993274063] [2024-06-03 19:30:04,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:04,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993274063] [2024-06-03 19:30:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993274063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:05,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:05,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271325110] [2024-06-03 19:30:05,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:05,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:05,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:05,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 124 transitions, 970 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:05,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:05,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:05,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:05,787 INFO L124 PetriNetUnfolderBase]: 339/688 cut-off events. [2024-06-03 19:30:05,787 INFO L125 PetriNetUnfolderBase]: For 29678/29678 co-relation queries the response was YES. [2024-06-03 19:30:05,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3243 conditions, 688 events. 339/688 cut-off events. For 29678/29678 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3461 event pairs, 79 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 3157. Up to 590 conditions per place. [2024-06-03 19:30:05,794 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 16 changer transitions 15/145 dead transitions. [2024-06-03 19:30:05,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 145 transitions, 1312 flow [2024-06-03 19:30:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:30:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:30:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-03 19:30:05,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-03 19:30:05,795 INFO L175 Difference]: Start difference. First operand has 207 places, 124 transitions, 970 flow. Second operand 12 states and 118 transitions. [2024-06-03 19:30:05,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 145 transitions, 1312 flow [2024-06-03 19:30:05,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 145 transitions, 1274 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:30:05,872 INFO L231 Difference]: Finished difference. Result has 199 places, 119 transitions, 917 flow [2024-06-03 19:30:05,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=917, PETRI_PLACES=199, PETRI_TRANSITIONS=119} [2024-06-03 19:30:05,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-03 19:30:05,873 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 119 transitions, 917 flow [2024-06-03 19:30:05,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:05,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:05,873 INFO L208 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 19:30:05,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-03 19:30:05,874 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:05,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2001189166, now seen corresponding path program 8 times [2024-06-03 19:30:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:05,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286879161] [2024-06-03 19:30:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:05,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:07,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286879161] [2024-06-03 19:30:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286879161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:07,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:07,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:07,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21388886] [2024-06-03 19:30:07,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:07,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:07,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:07,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:07,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 119 transitions, 917 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:07,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:07,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:07,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:07,927 INFO L124 PetriNetUnfolderBase]: 323/660 cut-off events. [2024-06-03 19:30:07,927 INFO L125 PetriNetUnfolderBase]: For 29684/29684 co-relation queries the response was YES. [2024-06-03 19:30:07,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 660 events. 323/660 cut-off events. For 29684/29684 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3297 event pairs, 77 based on Foata normal form. 6/665 useless extension candidates. Maximal degree in co-relation 3027. Up to 566 conditions per place. [2024-06-03 19:30:07,931 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 20 changer transitions 8/139 dead transitions. [2024-06-03 19:30:07,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 139 transitions, 1247 flow [2024-06-03 19:30:07,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:30:07,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:30:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-03 19:30:07,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-03 19:30:07,932 INFO L175 Difference]: Start difference. First operand has 199 places, 119 transitions, 917 flow. Second operand 12 states and 118 transitions. [2024-06-03 19:30:07,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 139 transitions, 1247 flow [2024-06-03 19:30:08,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 139 transitions, 1207 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-03 19:30:08,012 INFO L231 Difference]: Finished difference. Result has 193 places, 117 transitions, 907 flow [2024-06-03 19:30:08,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=907, PETRI_PLACES=193, PETRI_TRANSITIONS=117} [2024-06-03 19:30:08,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-03 19:30:08,013 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 117 transitions, 907 flow [2024-06-03 19:30:08,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:08,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:08,013 INFO L208 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 19:30:08,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-03 19:30:08,013 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:08,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:08,013 INFO L85 PathProgramCache]: Analyzing trace with hash 256830740, now seen corresponding path program 9 times [2024-06-03 19:30:08,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:08,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419617824] [2024-06-03 19:30:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:08,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:09,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:09,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419617824] [2024-06-03 19:30:09,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419617824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:09,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:09,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:09,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526055976] [2024-06-03 19:30:09,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:09,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:09,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:09,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:09,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:09,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:09,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 117 transitions, 907 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:09,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:09,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:09,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:09,517 INFO L124 PetriNetUnfolderBase]: 321/658 cut-off events. [2024-06-03 19:30:09,518 INFO L125 PetriNetUnfolderBase]: For 33085/33085 co-relation queries the response was YES. [2024-06-03 19:30:09,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 658 events. 321/658 cut-off events. For 33085/33085 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3276 event pairs, 83 based on Foata normal form. 8/665 useless extension candidates. Maximal degree in co-relation 3061. Up to 559 conditions per place. [2024-06-03 19:30:09,522 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 18 changer transitions 11/137 dead transitions. [2024-06-03 19:30:09,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 137 transitions, 1261 flow [2024-06-03 19:30:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:30:09,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:30:09,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-03 19:30:09,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-03 19:30:09,523 INFO L175 Difference]: Start difference. First operand has 193 places, 117 transitions, 907 flow. Second operand 12 states and 118 transitions. [2024-06-03 19:30:09,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 137 transitions, 1261 flow [2024-06-03 19:30:09,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 137 transitions, 1217 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:09,588 INFO L231 Difference]: Finished difference. Result has 192 places, 113 transitions, 873 flow [2024-06-03 19:30:09,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=873, PETRI_PLACES=192, PETRI_TRANSITIONS=113} [2024-06-03 19:30:09,588 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-03 19:30:09,588 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 113 transitions, 873 flow [2024-06-03 19:30:09,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:09,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:09,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:09,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-03 19:30:09,589 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:09,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash 271997682, now seen corresponding path program 10 times [2024-06-03 19:30:09,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:09,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581211706] [2024-06-03 19:30:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:09,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581211706] [2024-06-03 19:30:10,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581211706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:10,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:10,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871470683] [2024-06-03 19:30:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:10,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:10,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:10,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:11,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:11,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 113 transitions, 873 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:11,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:11,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:11,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:11,383 INFO L124 PetriNetUnfolderBase]: 311/640 cut-off events. [2024-06-03 19:30:11,384 INFO L125 PetriNetUnfolderBase]: For 29606/29606 co-relation queries the response was YES. [2024-06-03 19:30:11,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 640 events. 311/640 cut-off events. For 29606/29606 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3171 event pairs, 77 based on Foata normal form. 6/645 useless extension candidates. Maximal degree in co-relation 2937. Up to 539 conditions per place. [2024-06-03 19:30:11,388 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 11 changer transitions 24/134 dead transitions. [2024-06-03 19:30:11,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 134 transitions, 1195 flow [2024-06-03 19:30:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:30:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:30:11,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-03 19:30:11,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-03 19:30:11,389 INFO L175 Difference]: Start difference. First operand has 192 places, 113 transitions, 873 flow. Second operand 12 states and 117 transitions. [2024-06-03 19:30:11,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 134 transitions, 1195 flow [2024-06-03 19:30:11,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 134 transitions, 1149 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-03 19:30:11,454 INFO L231 Difference]: Finished difference. Result has 188 places, 103 transitions, 766 flow [2024-06-03 19:30:11,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=766, PETRI_PLACES=188, PETRI_TRANSITIONS=103} [2024-06-03 19:30:11,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-03 19:30:11,454 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 103 transitions, 766 flow [2024-06-03 19:30:11,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:11,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:11,455 INFO L208 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 19:30:11,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-03 19:30:11,455 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:11,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:11,456 INFO L85 PathProgramCache]: Analyzing trace with hash -925254790, now seen corresponding path program 11 times [2024-06-03 19:30:11,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:11,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017823823] [2024-06-03 19:30:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:11,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:12,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:12,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017823823] [2024-06-03 19:30:12,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017823823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:12,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:12,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:12,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281643821] [2024-06-03 19:30:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:12,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:12,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:12,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:12,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:12,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 103 transitions, 766 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:12,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:12,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:12,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:12,917 INFO L124 PetriNetUnfolderBase]: 287/590 cut-off events. [2024-06-03 19:30:12,918 INFO L125 PetriNetUnfolderBase]: For 28386/28386 co-relation queries the response was YES. [2024-06-03 19:30:12,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 590 events. 287/590 cut-off events. For 28386/28386 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2840 event pairs, 75 based on Foata normal form. 6/595 useless extension candidates. Maximal degree in co-relation 2692. Up to 519 conditions per place. [2024-06-03 19:30:12,921 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 10 changer transitions 16/122 dead transitions. [2024-06-03 19:30:12,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 122 transitions, 1056 flow [2024-06-03 19:30:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:30:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:30:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-03 19:30:12,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-03 19:30:12,922 INFO L175 Difference]: Start difference. First operand has 188 places, 103 transitions, 766 flow. Second operand 12 states and 112 transitions. [2024-06-03 19:30:12,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 122 transitions, 1056 flow [2024-06-03 19:30:12,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 122 transitions, 1019 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-03 19:30:12,988 INFO L231 Difference]: Finished difference. Result has 177 places, 98 transitions, 709 flow [2024-06-03 19:30:12,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=709, PETRI_PLACES=177, PETRI_TRANSITIONS=98} [2024-06-03 19:30:12,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-03 19:30:12,989 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 98 transitions, 709 flow [2024-06-03 19:30:12,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:12,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:12,989 INFO L208 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 19:30:12,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-03 19:30:12,989 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:12,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1783534674, now seen corresponding path program 12 times [2024-06-03 19:30:12,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:12,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405382586] [2024-06-03 19:30:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:12,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:14,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:14,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405382586] [2024-06-03 19:30:14,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405382586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:14,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:14,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:14,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165976493] [2024-06-03 19:30:14,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:14,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:14,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:14,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:14,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:14,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:14,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 98 transitions, 709 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:14,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:14,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:14,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:14,656 INFO L124 PetriNetUnfolderBase]: 274/563 cut-off events. [2024-06-03 19:30:14,656 INFO L125 PetriNetUnfolderBase]: For 28324/28324 co-relation queries the response was YES. [2024-06-03 19:30:14,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 563 events. 274/563 cut-off events. For 28324/28324 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2671 event pairs, 71 based on Foata normal form. 6/568 useless extension candidates. Maximal degree in co-relation 2564. Up to 477 conditions per place. [2024-06-03 19:30:14,660 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 89 selfloop transitions, 13 changer transitions 14/118 dead transitions. [2024-06-03 19:30:14,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 118 transitions, 995 flow [2024-06-03 19:30:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-03 19:30:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-03 19:30:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-03 19:30:14,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-03 19:30:14,661 INFO L175 Difference]: Start difference. First operand has 177 places, 98 transitions, 709 flow. Second operand 12 states and 115 transitions. [2024-06-03 19:30:14,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 118 transitions, 995 flow [2024-06-03 19:30:14,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 118 transitions, 965 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-03 19:30:14,720 INFO L231 Difference]: Finished difference. Result has 171 places, 94 transitions, 675 flow [2024-06-03 19:30:14,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=675, PETRI_PLACES=171, PETRI_TRANSITIONS=94} [2024-06-03 19:30:14,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-03 19:30:14,721 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 94 transitions, 675 flow [2024-06-03 19:30:14,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:14,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:14,721 INFO L208 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 19:30:14,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-03 19:30:14,721 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:14,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:14,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1925637744, now seen corresponding path program 13 times [2024-06-03 19:30:14,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:14,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017867740] [2024-06-03 19:30:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:14,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:16,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:16,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017867740] [2024-06-03 19:30:16,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017867740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:16,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:16,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:16,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460857446] [2024-06-03 19:30:16,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:16,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:16,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:16,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:16,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:16,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:16,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 94 transitions, 675 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:16,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:16,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:16,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:16,412 INFO L124 PetriNetUnfolderBase]: 260/537 cut-off events. [2024-06-03 19:30:16,412 INFO L125 PetriNetUnfolderBase]: For 28310/28310 co-relation queries the response was YES. [2024-06-03 19:30:16,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2531 conditions, 537 events. 260/537 cut-off events. For 28310/28310 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2510 event pairs, 67 based on Foata normal form. 6/542 useless extension candidates. Maximal degree in co-relation 2458. Up to 451 conditions per place. [2024-06-03 19:30:16,415 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 8 changer transitions 22/112 dead transitions. [2024-06-03 19:30:16,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 112 transitions, 943 flow [2024-06-03 19:30:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:16,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:16,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-03 19:30:16,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-03 19:30:16,416 INFO L175 Difference]: Start difference. First operand has 171 places, 94 transitions, 675 flow. Second operand 11 states and 107 transitions. [2024-06-03 19:30:16,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 112 transitions, 943 flow [2024-06-03 19:30:16,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 112 transitions, 909 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:16,474 INFO L231 Difference]: Finished difference. Result has 165 places, 86 transitions, 593 flow [2024-06-03 19:30:16,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=593, PETRI_PLACES=165, PETRI_TRANSITIONS=86} [2024-06-03 19:30:16,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-03 19:30:16,474 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 86 transitions, 593 flow [2024-06-03 19:30:16,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:16,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:16,475 INFO L208 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 19:30:16,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-03 19:30:16,475 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:16,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:16,475 INFO L85 PathProgramCache]: Analyzing trace with hash 277717444, now seen corresponding path program 14 times [2024-06-03 19:30:16,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655907184] [2024-06-03 19:30:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:16,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:17,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:17,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655907184] [2024-06-03 19:30:17,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655907184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:17,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:17,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:17,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876973850] [2024-06-03 19:30:17,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:17,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:17,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:17,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:17,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:17,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:17,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 86 transitions, 593 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:17,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:17,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:17,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:18,222 INFO L124 PetriNetUnfolderBase]: 242/495 cut-off events. [2024-06-03 19:30:18,222 INFO L125 PetriNetUnfolderBase]: For 28210/28210 co-relation queries the response was YES. [2024-06-03 19:30:18,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2356 conditions, 495 events. 242/495 cut-off events. For 28210/28210 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2249 event pairs, 61 based on Foata normal form. 6/500 useless extension candidates. Maximal degree in co-relation 2285. Up to 413 conditions per place. [2024-06-03 19:30:18,225 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 76 selfloop transitions, 8 changer transitions 18/104 dead transitions. [2024-06-03 19:30:18,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 104 transitions, 843 flow [2024-06-03 19:30:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:18,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-03 19:30:18,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-03 19:30:18,226 INFO L175 Difference]: Start difference. First operand has 165 places, 86 transitions, 593 flow. Second operand 11 states and 104 transitions. [2024-06-03 19:30:18,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 104 transitions, 843 flow [2024-06-03 19:30:18,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 104 transitions, 781 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-03 19:30:18,281 INFO L231 Difference]: Finished difference. Result has 149 places, 81 transitions, 525 flow [2024-06-03 19:30:18,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=525, PETRI_PLACES=149, PETRI_TRANSITIONS=81} [2024-06-03 19:30:18,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-03 19:30:18,282 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 81 transitions, 525 flow [2024-06-03 19:30:18,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:18,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:18,282 INFO L208 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 19:30:18,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-03 19:30:18,282 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:18,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:18,283 INFO L85 PathProgramCache]: Analyzing trace with hash -888928324, now seen corresponding path program 15 times [2024-06-03 19:30:18,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:18,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720828702] [2024-06-03 19:30:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:18,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:19,776 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 19:30:19,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:19,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720828702] [2024-06-03 19:30:19,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720828702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:19,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:19,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:19,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684903895] [2024-06-03 19:30:19,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:19,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:19,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:19,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:19,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:19,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 81 transitions, 525 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:19,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:19,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:19,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:20,158 INFO L124 PetriNetUnfolderBase]: 222/457 cut-off events. [2024-06-03 19:30:20,159 INFO L125 PetriNetUnfolderBase]: For 28073/28073 co-relation queries the response was YES. [2024-06-03 19:30:20,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 457 events. 222/457 cut-off events. For 28073/28073 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2021 event pairs, 55 based on Foata normal form. 6/462 useless extension candidates. Maximal degree in co-relation 2111. Up to 376 conditions per place. [2024-06-03 19:30:20,161 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 71 selfloop transitions, 10 changer transitions 15/98 dead transitions. [2024-06-03 19:30:20,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 98 transitions, 761 flow [2024-06-03 19:30:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-03 19:30:20,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-03 19:30:20,162 INFO L175 Difference]: Start difference. First operand has 149 places, 81 transitions, 525 flow. Second operand 11 states and 103 transitions. [2024-06-03 19:30:20,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 98 transitions, 761 flow [2024-06-03 19:30:20,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 98 transitions, 735 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:20,219 INFO L231 Difference]: Finished difference. Result has 141 places, 76 transitions, 492 flow [2024-06-03 19:30:20,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=492, PETRI_PLACES=141, PETRI_TRANSITIONS=76} [2024-06-03 19:30:20,219 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-03 19:30:20,219 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 76 transitions, 492 flow [2024-06-03 19:30:20,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:20,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:20,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:20,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-03 19:30:20,220 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:20,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1943557482, now seen corresponding path program 16 times [2024-06-03 19:30:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:20,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454251167] [2024-06-03 19:30:20,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:20,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:21,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:21,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454251167] [2024-06-03 19:30:21,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454251167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:21,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:21,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:21,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394547328] [2024-06-03 19:30:21,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:21,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:21,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:21,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:22,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:22,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 76 transitions, 492 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:22,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:22,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:22,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:22,410 INFO L124 PetriNetUnfolderBase]: 206/429 cut-off events. [2024-06-03 19:30:22,411 INFO L125 PetriNetUnfolderBase]: For 24076/24076 co-relation queries the response was YES. [2024-06-03 19:30:22,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 429 events. 206/429 cut-off events. For 24076/24076 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1866 event pairs, 51 based on Foata normal form. 6/434 useless extension candidates. Maximal degree in co-relation 1977. Up to 336 conditions per place. [2024-06-03 19:30:22,413 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 11 changer transitions 14/93 dead transitions. [2024-06-03 19:30:22,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 93 transitions, 720 flow [2024-06-03 19:30:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-03 19:30:22,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-03 19:30:22,414 INFO L175 Difference]: Start difference. First operand has 141 places, 76 transitions, 492 flow. Second operand 11 states and 105 transitions. [2024-06-03 19:30:22,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 93 transitions, 720 flow [2024-06-03 19:30:22,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 93 transitions, 692 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:22,471 INFO L231 Difference]: Finished difference. Result has 135 places, 70 transitions, 447 flow [2024-06-03 19:30:22,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=447, PETRI_PLACES=135, PETRI_TRANSITIONS=70} [2024-06-03 19:30:22,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-03 19:30:22,472 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 70 transitions, 447 flow [2024-06-03 19:30:22,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:22,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:22,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:22,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-03 19:30:22,472 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:22,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash -885209254, now seen corresponding path program 17 times [2024-06-03 19:30:22,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:22,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88046322] [2024-06-03 19:30:22,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:22,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:24,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88046322] [2024-06-03 19:30:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88046322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:24,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:24,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:24,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744866187] [2024-06-03 19:30:24,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:24,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:24,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:24,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 70 transitions, 447 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:24,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:24,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:24,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:24,402 INFO L124 PetriNetUnfolderBase]: 188/395 cut-off events. [2024-06-03 19:30:24,402 INFO L125 PetriNetUnfolderBase]: For 21218/21218 co-relation queries the response was YES. [2024-06-03 19:30:24,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 395 events. 188/395 cut-off events. For 21218/21218 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1675 event pairs, 51 based on Foata normal form. 6/400 useless extension candidates. Maximal degree in co-relation 1823. Up to 332 conditions per place. [2024-06-03 19:30:24,404 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 10 changer transitions 8/84 dead transitions. [2024-06-03 19:30:24,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 84 transitions, 647 flow [2024-06-03 19:30:24,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-03 19:30:24,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-03 19:30:24,405 INFO L175 Difference]: Start difference. First operand has 135 places, 70 transitions, 447 flow. Second operand 11 states and 100 transitions. [2024-06-03 19:30:24,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 84 transitions, 647 flow [2024-06-03 19:30:24,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 84 transitions, 611 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-03 19:30:24,436 INFO L231 Difference]: Finished difference. Result has 127 places, 68 transitions, 424 flow [2024-06-03 19:30:24,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=424, PETRI_PLACES=127, PETRI_TRANSITIONS=68} [2024-06-03 19:30:24,437 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-03 19:30:24,437 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 68 transitions, 424 flow [2024-06-03 19:30:24,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:24,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:24,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:24,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-03 19:30:24,437 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:24,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:24,438 INFO L85 PathProgramCache]: Analyzing trace with hash -622212750, now seen corresponding path program 18 times [2024-06-03 19:30:24,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:24,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976690155] [2024-06-03 19:30:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:24,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:26,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:26,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976690155] [2024-06-03 19:30:26,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976690155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:26,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:26,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:26,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771346613] [2024-06-03 19:30:26,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:26,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:26,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:26,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:26,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:26,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 68 transitions, 424 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:26,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:26,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:26,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:26,389 INFO L124 PetriNetUnfolderBase]: 179/380 cut-off events. [2024-06-03 19:30:26,389 INFO L125 PetriNetUnfolderBase]: For 18591/18591 co-relation queries the response was YES. [2024-06-03 19:30:26,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 380 events. 179/380 cut-off events. For 18591/18591 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1598 event pairs, 56 based on Foata normal form. 8/387 useless extension candidates. Maximal degree in co-relation 1621. Up to 312 conditions per place. [2024-06-03 19:30:26,390 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 55 selfloop transitions, 5 changer transitions 19/81 dead transitions. [2024-06-03 19:30:26,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 81 transitions, 616 flow [2024-06-03 19:30:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-03 19:30:26,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-03 19:30:26,391 INFO L175 Difference]: Start difference. First operand has 127 places, 68 transitions, 424 flow. Second operand 11 states and 100 transitions. [2024-06-03 19:30:26,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 81 transitions, 616 flow [2024-06-03 19:30:26,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 81 transitions, 592 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:26,415 INFO L231 Difference]: Finished difference. Result has 125 places, 59 transitions, 346 flow [2024-06-03 19:30:26,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=125, PETRI_TRANSITIONS=59} [2024-06-03 19:30:26,415 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-03 19:30:26,415 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 59 transitions, 346 flow [2024-06-03 19:30:26,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:26,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:26,416 INFO L208 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 19:30:26,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-03 19:30:26,416 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:26,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash 483314086, now seen corresponding path program 19 times [2024-06-03 19:30:26,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:26,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523201457] [2024-06-03 19:30:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:26,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:27,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:27,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523201457] [2024-06-03 19:30:27,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523201457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:27,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:27,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596463853] [2024-06-03 19:30:27,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:27,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:27,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:27,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:27,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:27,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:27,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 59 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:27,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:27,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:27,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:27,944 INFO L124 PetriNetUnfolderBase]: 163/346 cut-off events. [2024-06-03 19:30:27,944 INFO L125 PetriNetUnfolderBase]: For 15597/15597 co-relation queries the response was YES. [2024-06-03 19:30:27,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 346 events. 163/346 cut-off events. For 15597/15597 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1407 event pairs, 50 based on Foata normal form. 6/351 useless extension candidates. Maximal degree in co-relation 1448. Up to 282 conditions per place. [2024-06-03 19:30:27,946 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 6 changer transitions 16/74 dead transitions. [2024-06-03 19:30:27,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 74 transitions, 528 flow [2024-06-03 19:30:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-03 19:30:27,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-03 19:30:27,946 INFO L175 Difference]: Start difference. First operand has 125 places, 59 transitions, 346 flow. Second operand 11 states and 99 transitions. [2024-06-03 19:30:27,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 74 transitions, 528 flow [2024-06-03 19:30:27,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 74 transitions, 484 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-03 19:30:27,960 INFO L231 Difference]: Finished difference. Result has 110 places, 54 transitions, 298 flow [2024-06-03 19:30:27,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=298, PETRI_PLACES=110, PETRI_TRANSITIONS=54} [2024-06-03 19:30:27,960 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-03 19:30:27,960 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 54 transitions, 298 flow [2024-06-03 19:30:27,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:27,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:27,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:27,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-03 19:30:27,961 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:27,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:27,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1948358830, now seen corresponding path program 20 times [2024-06-03 19:30:27,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:27,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947924450] [2024-06-03 19:30:27,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:27,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:29,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:29,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:29,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947924450] [2024-06-03 19:30:29,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947924450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:29,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:29,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:29,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685931099] [2024-06-03 19:30:29,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:29,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:29,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:29,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:29,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:29,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:29,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 54 transitions, 298 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:29,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:29,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:29,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:29,626 INFO L124 PetriNetUnfolderBase]: 150/319 cut-off events. [2024-06-03 19:30:29,626 INFO L125 PetriNetUnfolderBase]: For 12279/12279 co-relation queries the response was YES. [2024-06-03 19:30:29,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 319 events. 150/319 cut-off events. For 12279/12279 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1249 event pairs, 46 based on Foata normal form. 6/324 useless extension candidates. Maximal degree in co-relation 1259. Up to 250 conditions per place. [2024-06-03 19:30:29,627 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 7 changer transitions 12/68 dead transitions. [2024-06-03 19:30:29,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 68 transitions, 462 flow [2024-06-03 19:30:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:30:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:30:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-06-03 19:30:29,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3 [2024-06-03 19:30:29,628 INFO L175 Difference]: Start difference. First operand has 110 places, 54 transitions, 298 flow. Second operand 10 states and 93 transitions. [2024-06-03 19:30:29,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 68 transitions, 462 flow [2024-06-03 19:30:29,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 68 transitions, 440 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:29,638 INFO L231 Difference]: Finished difference. Result has 101 places, 50 transitions, 275 flow [2024-06-03 19:30:29,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=275, PETRI_PLACES=101, PETRI_TRANSITIONS=50} [2024-06-03 19:30:29,638 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-03 19:30:29,638 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 50 transitions, 275 flow [2024-06-03 19:30:29,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:29,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:29,638 INFO L208 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 19:30:29,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-03 19:30:29,639 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:29,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash -517068868, now seen corresponding path program 21 times [2024-06-03 19:30:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408607534] [2024-06-03 19:30:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:29,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:31,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:31,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408607534] [2024-06-03 19:30:31,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408607534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:31,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:31,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:31,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067668918] [2024-06-03 19:30:31,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:31,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:31,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:31,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:31,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:31,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:31,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 50 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:31,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:31,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:31,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:31,348 INFO L124 PetriNetUnfolderBase]: 136/293 cut-off events. [2024-06-03 19:30:31,348 INFO L125 PetriNetUnfolderBase]: For 9769/9769 co-relation queries the response was YES. [2024-06-03 19:30:31,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 293 events. 136/293 cut-off events. For 9769/9769 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1111 event pairs, 42 based on Foata normal form. 6/298 useless extension candidates. Maximal degree in co-relation 1145. Up to 224 conditions per place. [2024-06-03 19:30:31,350 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 39 selfloop transitions, 3 changer transitions 22/66 dead transitions. [2024-06-03 19:30:31,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 66 transitions, 439 flow [2024-06-03 19:30:31,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:31,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-03 19:30:31,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-03 19:30:31,351 INFO L175 Difference]: Start difference. First operand has 101 places, 50 transitions, 275 flow. Second operand 11 states and 99 transitions. [2024-06-03 19:30:31,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 66 transitions, 439 flow [2024-06-03 19:30:31,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 66 transitions, 417 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:31,360 INFO L231 Difference]: Finished difference. Result has 96 places, 43 transitions, 229 flow [2024-06-03 19:30:31,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=229, PETRI_PLACES=96, PETRI_TRANSITIONS=43} [2024-06-03 19:30:31,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-03 19:30:31,360 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 43 transitions, 229 flow [2024-06-03 19:30:31,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:31,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:31,361 INFO L208 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 19:30:31,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-03 19:30:31,361 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:31,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash -612340984, now seen corresponding path program 22 times [2024-06-03 19:30:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:31,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440152872] [2024-06-03 19:30:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:31,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:32,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:32,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440152872] [2024-06-03 19:30:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440152872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:32,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:32,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029439968] [2024-06-03 19:30:32,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:32,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:32,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:32,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 43 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:32,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:32,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:32,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:32,953 INFO L124 PetriNetUnfolderBase]: 117/253 cut-off events. [2024-06-03 19:30:32,953 INFO L125 PetriNetUnfolderBase]: For 8052/8052 co-relation queries the response was YES. [2024-06-03 19:30:32,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 253 events. 117/253 cut-off events. For 8052/8052 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 914 event pairs, 38 based on Foata normal form. 6/258 useless extension candidates. Maximal degree in co-relation 993. Up to 186 conditions per place. [2024-06-03 19:30:32,954 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 10 changer transitions 11/58 dead transitions. [2024-06-03 19:30:32,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 58 transitions, 373 flow [2024-06-03 19:30:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-03 19:30:32,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-03 19:30:32,955 INFO L175 Difference]: Start difference. First operand has 96 places, 43 transitions, 229 flow. Second operand 11 states and 101 transitions. [2024-06-03 19:30:32,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 58 transitions, 373 flow [2024-06-03 19:30:32,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 58 transitions, 351 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-03 19:30:32,961 INFO L231 Difference]: Finished difference. Result has 83 places, 40 transitions, 216 flow [2024-06-03 19:30:32,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=216, PETRI_PLACES=83, PETRI_TRANSITIONS=40} [2024-06-03 19:30:32,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-03 19:30:32,961 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 40 transitions, 216 flow [2024-06-03 19:30:32,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:32,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:32,962 INFO L208 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 19:30:32,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-03 19:30:32,962 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:32,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:32,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1061474448, now seen corresponding path program 23 times [2024-06-03 19:30:32,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:32,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738394205] [2024-06-03 19:30:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:32,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:34,193 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 19:30:34,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:34,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738394205] [2024-06-03 19:30:34,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738394205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:34,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:34,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:34,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892078240] [2024-06-03 19:30:34,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:34,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:34,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:34,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:34,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:34,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:34,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 40 transitions, 216 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:34,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:34,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:34,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:34,482 INFO L124 PetriNetUnfolderBase]: 107/235 cut-off events. [2024-06-03 19:30:34,482 INFO L125 PetriNetUnfolderBase]: For 5154/5154 co-relation queries the response was YES. [2024-06-03 19:30:34,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 235 events. 107/235 cut-off events. For 5154/5154 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 824 event pairs, 36 based on Foata normal form. 6/240 useless extension candidates. Maximal degree in co-relation 888. Up to 139 conditions per place. [2024-06-03 19:30:34,483 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 12 changer transitions 14/54 dead transitions. [2024-06-03 19:30:34,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 54 transitions, 350 flow [2024-06-03 19:30:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-03 19:30:34,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2844574780058651 [2024-06-03 19:30:34,484 INFO L175 Difference]: Start difference. First operand has 83 places, 40 transitions, 216 flow. Second operand 11 states and 97 transitions. [2024-06-03 19:30:34,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 54 transitions, 350 flow [2024-06-03 19:30:34,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 54 transitions, 324 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:34,489 INFO L231 Difference]: Finished difference. Result has 79 places, 36 transitions, 199 flow [2024-06-03 19:30:34,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=199, PETRI_PLACES=79, PETRI_TRANSITIONS=36} [2024-06-03 19:30:34,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-03 19:30:34,490 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 36 transitions, 199 flow [2024-06-03 19:30:34,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:34,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:34,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:34,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-03 19:30:34,490 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:34,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:34,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1057899528, now seen corresponding path program 24 times [2024-06-03 19:30:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:34,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104007351] [2024-06-03 19:30:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:35,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:35,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104007351] [2024-06-03 19:30:35,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104007351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:35,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:35,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:35,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437415141] [2024-06-03 19:30:35,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:35,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:35,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:35,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:35,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:35,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:35,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 36 transitions, 199 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:35,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:35,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:35,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:36,152 INFO L124 PetriNetUnfolderBase]: 93/209 cut-off events. [2024-06-03 19:30:36,152 INFO L125 PetriNetUnfolderBase]: For 4338/4338 co-relation queries the response was YES. [2024-06-03 19:30:36,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826 conditions, 209 events. 93/209 cut-off events. For 4338/4338 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 709 event pairs, 32 based on Foata normal form. 6/214 useless extension candidates. Maximal degree in co-relation 798. Up to 142 conditions per place. [2024-06-03 19:30:36,153 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 26 selfloop transitions, 6 changer transitions 17/51 dead transitions. [2024-06-03 19:30:36,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 51 transitions, 329 flow [2024-06-03 19:30:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-03 19:30:36,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-03 19:30:36,163 INFO L175 Difference]: Start difference. First operand has 79 places, 36 transitions, 199 flow. Second operand 11 states and 98 transitions. [2024-06-03 19:30:36,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 51 transitions, 329 flow [2024-06-03 19:30:36,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 51 transitions, 297 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:36,167 INFO L231 Difference]: Finished difference. Result has 73 places, 31 transitions, 159 flow [2024-06-03 19:30:36,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=159, PETRI_PLACES=73, PETRI_TRANSITIONS=31} [2024-06-03 19:30:36,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-03 19:30:36,167 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 31 transitions, 159 flow [2024-06-03 19:30:36,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:36,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:36,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:36,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-03 19:30:36,168 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:36,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1118147156, now seen corresponding path program 25 times [2024-06-03 19:30:36,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:36,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376482958] [2024-06-03 19:30:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:36,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:38,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:38,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376482958] [2024-06-03 19:30:38,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376482958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:38,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:38,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:38,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824558696] [2024-06-03 19:30:38,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:38,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:38,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:38,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:38,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:38,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:38,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 31 transitions, 159 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:38,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:38,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:38,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:38,587 INFO L124 PetriNetUnfolderBase]: 77/177 cut-off events. [2024-06-03 19:30:38,587 INFO L125 PetriNetUnfolderBase]: For 3214/3214 co-relation queries the response was YES. [2024-06-03 19:30:38,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 177 events. 77/177 cut-off events. For 3214/3214 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 562 event pairs, 30 based on Foata normal form. 6/182 useless extension candidates. Maximal degree in co-relation 666. Up to 95 conditions per place. [2024-06-03 19:30:38,588 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 20 selfloop transitions, 6 changer transitions 17/45 dead transitions. [2024-06-03 19:30:38,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 45 transitions, 275 flow [2024-06-03 19:30:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-03 19:30:38,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-03 19:30:38,588 INFO L175 Difference]: Start difference. First operand has 73 places, 31 transitions, 159 flow. Second operand 11 states and 96 transitions. [2024-06-03 19:30:38,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 45 transitions, 275 flow [2024-06-03 19:30:38,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 45 transitions, 253 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:38,590 INFO L231 Difference]: Finished difference. Result has 65 places, 25 transitions, 124 flow [2024-06-03 19:30:38,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=124, PETRI_PLACES=65, PETRI_TRANSITIONS=25} [2024-06-03 19:30:38,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-03 19:30:38,591 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 25 transitions, 124 flow [2024-06-03 19:30:38,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:38,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:38,591 INFO L208 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 19:30:38,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-03 19:30:38,591 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:38,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1775327390, now seen corresponding path program 26 times [2024-06-03 19:30:38,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:38,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531674333] [2024-06-03 19:30:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:30:39,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:39,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531674333] [2024-06-03 19:30:39,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531674333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:39,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:39,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:39,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780890532] [2024-06-03 19:30:39,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:39,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:39,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:39,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:39,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:39,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:39,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 25 transitions, 124 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:39,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:39,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:39,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:40,056 INFO L124 PetriNetUnfolderBase]: 48/114 cut-off events. [2024-06-03 19:30:40,056 INFO L125 PetriNetUnfolderBase]: For 1346/1346 co-relation queries the response was YES. [2024-06-03 19:30:40,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 114 events. 48/114 cut-off events. For 1346/1346 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 280 event pairs, 15 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 376. Up to 52 conditions per place. [2024-06-03 19:30:40,057 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 7 changer transitions 11/38 dead transitions. [2024-06-03 19:30:40,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 38 transitions, 224 flow [2024-06-03 19:30:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:40,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 92 transitions. [2024-06-03 19:30:40,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2697947214076246 [2024-06-03 19:30:40,057 INFO L175 Difference]: Start difference. First operand has 65 places, 25 transitions, 124 flow. Second operand 11 states and 92 transitions. [2024-06-03 19:30:40,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 38 transitions, 224 flow [2024-06-03 19:30:40,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 38 transitions, 202 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-03 19:30:40,058 INFO L231 Difference]: Finished difference. Result has 56 places, 22 transitions, 104 flow [2024-06-03 19:30:40,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=22} [2024-06-03 19:30:40,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-03 19:30:40,059 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 22 transitions, 104 flow [2024-06-03 19:30:40,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:40,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:30:40,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:40,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-03 19:30:40,060 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 19:30:40,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:30:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2058282482, now seen corresponding path program 27 times [2024-06-03 19:30:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:30:40,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443297112] [2024-06-03 19:30:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:30:40,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:30:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:30:41,971 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 19:30:41,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:30:41,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443297112] [2024-06-03 19:30:41,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443297112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:30:41,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:30:41,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-03 19:30:41,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105813280] [2024-06-03 19:30:41,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:30:41,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-03 19:30:41,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:30:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-03 19:30:41,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-03 19:30:42,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-03 19:30:42,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 22 transitions, 104 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:42,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:30:42,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-03 19:30:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:30:42,247 INFO L124 PetriNetUnfolderBase]: 23/63 cut-off events. [2024-06-03 19:30:42,247 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-06-03 19:30:42,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 63 events. 23/63 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 6/68 useless extension candidates. Maximal degree in co-relation 166. Up to 24 conditions per place. [2024-06-03 19:30:42,247 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-03 19:30:42,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 30 transitions, 154 flow [2024-06-03 19:30:42,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:30:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:30:42,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 84 transitions. [2024-06-03 19:30:42,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24633431085043989 [2024-06-03 19:30:42,248 INFO L175 Difference]: Start difference. First operand has 56 places, 22 transitions, 104 flow. Second operand 11 states and 84 transitions. [2024-06-03 19:30:42,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 30 transitions, 154 flow [2024-06-03 19:30:42,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 30 transitions, 122 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-03 19:30:42,249 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-03 19:30:42,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=43, PETRI_TRANSITIONS=0} [2024-06-03 19:30:42,249 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-03 19:30:42,249 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-03 19:30:42,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:30:42,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 19:30:42,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 19:30:42,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 19:30:42,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 19:30:42,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-03 19:30:42,252 INFO L445 BasicCegarLoop]: Path program histogram: [34, 27, 21, 20, 15, 15, 10, 10, 6, 5, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:30:42,254 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:30:42,254 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:30:42,257 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 19:30:42,257 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 19:30:42,257 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:30:42 BasicIcfg [2024-06-03 19:30:42,258 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:30:42,258 INFO L158 Benchmark]: Toolchain (without parser) took 295275.85ms. Allocated memory was 172.0MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 106.9MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2024-06-03 19:30:42,259 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:30:42,261 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:30:42,261 INFO L158 Benchmark]: CACSL2BoogieTranslator took 627.34ms. Allocated memory is still 172.0MB. Free memory was 106.9MB in the beginning and 72.4MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-03 19:30:42,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.08ms. Allocated memory is still 172.0MB. Free memory was 72.4MB in the beginning and 138.6MB in the end (delta: -66.3MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2024-06-03 19:30:42,262 INFO L158 Benchmark]: Boogie Preprocessor took 125.69ms. Allocated memory was 172.0MB in the beginning and 228.6MB in the end (delta: 56.6MB). Free memory was 138.6MB in the beginning and 194.6MB in the end (delta: -56.0MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2024-06-03 19:30:42,262 INFO L158 Benchmark]: RCFGBuilder took 691.26ms. Allocated memory is still 228.6MB. Free memory was 194.6MB in the beginning and 133.8MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2024-06-03 19:30:42,262 INFO L158 Benchmark]: TraceAbstraction took 293744.36ms. Allocated memory was 228.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 133.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-06-03 19:30:42,270 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 112.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 627.34ms. Allocated memory is still 172.0MB. Free memory was 106.9MB in the beginning and 72.4MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.08ms. Allocated memory is still 172.0MB. Free memory was 72.4MB in the beginning and 138.6MB in the end (delta: -66.3MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.69ms. Allocated memory was 172.0MB in the beginning and 228.6MB in the end (delta: 56.6MB). Free memory was 138.6MB in the beginning and 194.6MB in the end (delta: -56.0MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * RCFGBuilder took 691.26ms. Allocated memory is still 228.6MB. Free memory was 194.6MB in the beginning and 133.8MB in the end (delta: 60.8MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * TraceAbstraction took 293744.36ms. Allocated memory was 228.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 133.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: 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: 293.7s, OverallIterations: 192, TraceHistogramMax: 1, PathProgramHistogramMax: 34, EmptinessCheckTime: 0.0s, AutomataDifference: 102.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9894 SdHoareTripleChecker+Valid, 42.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8484 mSDsluCounter, 3451 SdHoareTripleChecker+Invalid, 36.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2702 mSDsCounter, 2264 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72643 IncrementalHoareTripleChecker+Invalid, 74907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2264 mSolverCounterUnsat, 749 mSDtfsCounter, 72643 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2018 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2017 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4155 ImplicationChecksByTransitivity, 50.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2513occurred in iteration=101, InterpolantAutomatonStates: 1871, 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, 1.7s SatisfiabilityAnalysisTime, 187.3s InterpolantComputationTime, 3240 NumberOfCodeBlocks, 3240 NumberOfCodeBlocksAsserted, 192 NumberOfCheckSat, 3048 ConstructedInterpolants, 0 QuantifiedInterpolants, 130799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 192 InterpolantComputations, 192 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 19:30:42,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE