./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix041_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix041_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix041_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 16:22:26,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 16:22:26,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 16:22:26,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 16:22:26,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 16:22:26,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 16:22:26,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 16:22:26,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 16:22:26,770 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 16:22:26,773 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 16:22:26,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 16:22:26,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 16:22:26,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 16:22:26,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 16:22:26,775 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 16:22:26,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 16:22:26,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 16:22:26,776 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 16:22:26,776 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 16:22:26,776 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 16:22:26,776 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 16:22:26,777 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 16:22:26,777 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 16:22:26,777 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 16:22:26,777 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 16:22:26,777 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 16:22:26,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 16:22:26,778 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 16:22:26,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 16:22:26,778 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 16:22:26,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 16:22:26,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 16:22:26,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:22:26,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 16:22:26,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 16:22:26,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 16:22:26,780 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 16:22:26,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 16:22:26,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 16:22:26,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 16:22:26,780 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 16:22:26,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 16:22:26,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 16:22:26,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 16:22:26,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 16:22:27,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 16:22:27,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 16:22:27,007 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 16:22:27,008 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 16:22:27,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix041_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-20 16:22:27,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 16:22:27,128 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 16:22:27,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.oepc_pso.oepc_rmo.oepc.i [2024-06-20 16:22:28,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 16:22:28,452 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 16:22:28,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.oepc_pso.oepc_rmo.oepc.i [2024-06-20 16:22:28,464 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d50fd9f9/88e2736320664dff84623f2876e07c5a/FLAG9eed61c14 [2024-06-20 16:22:28,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d50fd9f9/88e2736320664dff84623f2876e07c5a [2024-06-20 16:22:28,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 16:22:28,787 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 16:22:28,789 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 16:22:28,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 16:22:28,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 16:22:28,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:22:27" (1/2) ... [2024-06-20 16:22:28,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4755ff8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:28, skipping insertion in model container [2024-06-20 16:22:28,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:22:27" (1/2) ... [2024-06-20 16:22:28,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@723d9be2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:28, skipping insertion in model container [2024-06-20 16:22:28,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:22:28" (2/2) ... [2024-06-20 16:22:28,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4755ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:28, skipping insertion in model container [2024-06-20 16:22:28,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:22:28" (2/2) ... [2024-06-20 16:22:28,797 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 16:22:28,850 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 16:22:28,851 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] (((((((((((((((! multithreaded || z$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-20 16:22:28,851 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] (((((((((((((((! multithreaded || z$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z$w_buff0 && z$w_buff0 <= 1) && (z$w_buff0 == 0 || z$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= z$mem_tmp && z$mem_tmp <= 1) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z$w_buff1 && z$w_buff1 <= 1) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-20 16:22:28,851 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 16:22:28,851 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-20 16:22:28,886 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 16:22:29,219 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:22:29,231 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 16:22:29,329 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:22:29,367 INFO L206 MainTranslator]: Completed translation [2024-06-20 16:22:29,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29 WrapperNode [2024-06-20 16:22:29,367 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 16:22:29,368 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 16:22:29,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 16:22:29,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 16:22:29,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,429 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-20 16:22:29,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 16:22:29,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 16:22:29,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 16:22:29,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 16:22:29,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,454 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,473 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]. [2024-06-20 16:22:29,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,490 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 16:22:29,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 16:22:29,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 16:22:29,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 16:22:29,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (1/1) ... [2024-06-20 16:22:29,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:22:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 16:22:29,538 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) [2024-06-20 16:22:29,556 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 [2024-06-20 16:22:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 16:22:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 16:22:29,569 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 16:22:29,569 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 16:22:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 16:22:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 16:22:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 16:22:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 16:22:29,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 16:22:29,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 16:22:29,572 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 16:22:29,686 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 16:22:29,688 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 16:22:29,999 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 16:22:30,000 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 16:22:30,176 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 16:22:30,176 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 16:22:30,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:22:30 BoogieIcfgContainer [2024-06-20 16:22:30,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 16:22:30,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 16:22:30,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 16:22:30,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 16:22:30,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:22:27" (1/4) ... [2024-06-20 16:22:30,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fad9dc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:22:30, skipping insertion in model container [2024-06-20 16:22:30,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 04:22:28" (2/4) ... [2024-06-20 16:22:30,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fad9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:22:30, skipping insertion in model container [2024-06-20 16:22:30,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:29" (3/4) ... [2024-06-20 16:22:30,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fad9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:22:30, skipping insertion in model container [2024-06-20 16:22:30,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:22:30" (4/4) ... [2024-06-20 16:22:30,189 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.oepc_pso.oepc_rmo.oepc.i [2024-06-20 16:22:30,204 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 16:22:30,204 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 16:22:30,204 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 16:22:30,236 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 16:22:30,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 16:22:30,287 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-20 16:22:30,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:22:30,289 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 41 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. [2024-06-20 16:22:30,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 16:22:30,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-20 16:22:30,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 16:22:30,308 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;@3f31231b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 16:22:30,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 16:22:30,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 16:22:30,312 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 16:22:30,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:22:30,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:30,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 16:22:30,313 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)] === [2024-06-20 16:22:30,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash 332828771, now seen corresponding path program 1 times [2024-06-20 16:22:30,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:30,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301494947] [2024-06-20 16:22:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:30,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:31,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:31,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301494947] [2024-06-20 16:22:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301494947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:31,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:31,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 16:22:31,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196676271] [2024-06-20 16:22:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:31,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 16:22:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 16:22:31,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 16:22:31,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:22:31,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-06-20 16:22:31,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:31,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:22:31,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:31,297 INFO L124 PetriNetUnfolderBase]: 189/351 cut-off events. [2024-06-20 16:22:31,297 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-20 16:22:31,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 351 events. 189/351 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1290 event pairs, 115 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 696. Up to 333 conditions per place. [2024-06-20 16:22:31,302 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-20 16:22:31,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-20 16:22:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 16:22:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 16:22:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-20 16:22:31,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-20 16:22:31,313 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-20 16:22:31,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-20 16:22:31,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 16:22:31,316 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-20 16:22:31,317 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} [2024-06-20 16:22:31,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-20 16:22:31,320 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-20 16:22:31,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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) [2024-06-20 16:22:31,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:31,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:31,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 16:22:31,321 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)] === [2024-06-20 16:22:31,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2020889858, now seen corresponding path program 1 times [2024-06-20 16:22:31,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:31,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856864080] [2024-06-20 16:22:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:31,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:31,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:31,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856864080] [2024-06-20 16:22:31,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856864080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:31,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:31,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 16:22:31,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456009908] [2024-06-20 16:22:31,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:31,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 16:22:31,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 16:22:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 16:22:31,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:22:31,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:31,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:31,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:22:31,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:31,882 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-20 16:22:31,883 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-20 16:22:31,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1271 event pairs, 94 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-20 16:22:31,885 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-20 16:22:31,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-20 16:22:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 16:22:31,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 16:22:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-20 16:22:31,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564516129032258 [2024-06-20 16:22:31,887 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 69 transitions. [2024-06-20 16:22:31,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-20 16:22:31,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 16:22:31,888 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-20 16:22:31,889 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} [2024-06-20 16:22:31,889 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-20 16:22:31,889 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-20 16:22:31,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:31,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:31,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:31,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 16:22:31,890 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)] === [2024-06-20 16:22:31,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1776923130, now seen corresponding path program 1 times [2024-06-20 16:22:31,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:31,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663458164] [2024-06-20 16:22:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:31,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:32,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:32,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663458164] [2024-06-20 16:22:32,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663458164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:32,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:32,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 16:22:32,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176928819] [2024-06-20 16:22:32,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:32,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 16:22:32,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:32,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 16:22:32,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 16:22:32,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:22:32,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:32,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:32,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:22:32,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:32,535 INFO L124 PetriNetUnfolderBase]: 187/354 cut-off events. [2024-06-20 16:22:32,535 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-20 16:22:32,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 354 events. 187/354 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1309 event pairs, 67 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 868. Up to 293 conditions per place. [2024-06-20 16:22:32,537 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-20 16:22:32,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 251 flow [2024-06-20 16:22:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:22:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:22:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-20 16:22:32,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-20 16:22:32,539 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 90 transitions. [2024-06-20 16:22:32,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 251 flow [2024-06-20 16:22:32,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 16:22:32,541 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-20 16:22:32,541 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=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-20 16:22:32,542 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-20 16:22:32,542 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-20 16:22:32,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:32,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:32,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:32,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 16:22:32,543 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)] === [2024-06-20 16:22:32,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1414893681, now seen corresponding path program 1 times [2024-06-20 16:22:32,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:32,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387143088] [2024-06-20 16:22:32,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:33,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:33,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387143088] [2024-06-20 16:22:33,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387143088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:33,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:33,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:22:33,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736268773] [2024-06-20 16:22:33,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:33,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:22:33,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:33,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:22:33,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:22:33,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:22:33,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:33,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:33,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:22:33,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:33,489 INFO L124 PetriNetUnfolderBase]: 188/356 cut-off events. [2024-06-20 16:22:33,490 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-20 16:22:33,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1059 conditions, 356 events. 188/356 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1311 event pairs, 46 based on Foata normal form. 3/357 useless extension candidates. Maximal degree in co-relation 1042. Up to 282 conditions per place. [2024-06-20 16:22:33,492 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2024-06-20 16:22:33,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 336 flow [2024-06-20 16:22:33,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:22:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:22:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-20 16:22:33,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-20 16:22:33,494 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 106 transitions. [2024-06-20 16:22:33,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 336 flow [2024-06-20 16:22:33,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 332 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-20 16:22:33,497 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 214 flow [2024-06-20 16:22:33,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-20 16:22:33,498 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-20 16:22:33,498 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 214 flow [2024-06-20 16:22:33,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:33,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:33,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:33,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 16:22:33,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:22:33,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1773879685, now seen corresponding path program 1 times [2024-06-20 16:22:33,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480183853] [2024-06-20 16:22:33,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:33,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:34,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:34,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480183853] [2024-06-20 16:22:34,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480183853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:34,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:34,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:22:34,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468815995] [2024-06-20 16:22:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:34,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:22:34,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:22:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:22:34,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:22:34,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2024-06-20 16:22:34,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:34,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:22:34,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:34,573 INFO L124 PetriNetUnfolderBase]: 189/359 cut-off events. [2024-06-20 16:22:34,573 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-20 16:22:34,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 359 events. 189/359 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1327 event pairs, 24 based on Foata normal form. 6/363 useless extension candidates. Maximal degree in co-relation 1172. Up to 259 conditions per place. [2024-06-20 16:22:34,575 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 38 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-20 16:22:34,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 382 flow [2024-06-20 16:22:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:34,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-20 16:22:34,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391705069124424 [2024-06-20 16:22:34,579 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 214 flow. Second operand 7 states and 117 transitions. [2024-06-20 16:22:34,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 382 flow [2024-06-20 16:22:34,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 350 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:34,583 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 217 flow [2024-06-20 16:22:34,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-20 16:22:34,586 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-20 16:22:34,587 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 217 flow [2024-06-20 16:22:34,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) [2024-06-20 16:22:34,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:34,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:34,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 16:22:34,592 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)] === [2024-06-20 16:22:34,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1502486617, now seen corresponding path program 1 times [2024-06-20 16:22:34,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:34,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630771636] [2024-06-20 16:22:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:34,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:35,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:35,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630771636] [2024-06-20 16:22:35,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630771636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:35,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:35,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:22:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48086289] [2024-06-20 16:22:35,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:22:35,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:22:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:22:35,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:22:35,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:35,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:35,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:22:35,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:35,244 INFO L124 PetriNetUnfolderBase]: 187/355 cut-off events. [2024-06-20 16:22:35,245 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-20 16:22:35,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 355 events. 187/355 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1302 event pairs, 47 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 1217. Up to 329 conditions per place. [2024-06-20 16:22:35,247 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-20 16:22:35,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 309 flow [2024-06-20 16:22:35,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:22:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:22:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-20 16:22:35,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-20 16:22:35,248 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 217 flow. Second operand 5 states and 64 transitions. [2024-06-20 16:22:35,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 309 flow [2024-06-20 16:22:35,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 268 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:35,251 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 193 flow [2024-06-20 16:22:35,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-20 16:22:35,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-20 16:22:35,254 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 193 flow [2024-06-20 16:22:35,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:35,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:35,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:35,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 16:22:35,255 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)] === [2024-06-20 16:22:35,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash -696182331, now seen corresponding path program 1 times [2024-06-20 16:22:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:35,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760022806] [2024-06-20 16:22:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:35,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760022806] [2024-06-20 16:22:35,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760022806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:35,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:35,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:22:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240117163] [2024-06-20 16:22:35,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:22:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:22:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:22:35,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:35,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 193 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) [2024-06-20 16:22:35,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:35,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:35,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:36,001 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-20 16:22:36,001 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2024-06-20 16:22:36,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 382 events. 212/382 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1353 event pairs, 55 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1300. Up to 368 conditions per place. [2024-06-20 16:22:36,004 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-20 16:22:36,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 303 flow [2024-06-20 16:22:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:22:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:22:36,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-20 16:22:36,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 16:22:36,005 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 193 flow. Second operand 6 states and 69 transitions. [2024-06-20 16:22:36,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 303 flow [2024-06-20 16:22:36,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 288 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:36,007 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 211 flow [2024-06-20 16:22:36,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-20 16:22:36,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-20 16:22:36,008 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 211 flow [2024-06-20 16:22:36,008 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) [2024-06-20 16:22:36,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:36,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:36,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 16:22:36,008 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)] === [2024-06-20 16:22:36,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:36,009 INFO L85 PathProgramCache]: Analyzing trace with hash -479738274, now seen corresponding path program 1 times [2024-06-20 16:22:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:36,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872472619] [2024-06-20 16:22:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:36,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:36,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:36,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872472619] [2024-06-20 16:22:36,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872472619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:36,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:36,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:22:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043065715] [2024-06-20 16:22:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:36,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:22:36,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:22:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:22:36,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:22:36,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-20 16:22:36,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:36,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:22:36,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:36,739 INFO L124 PetriNetUnfolderBase]: 197/368 cut-off events. [2024-06-20 16:22:36,739 INFO L125 PetriNetUnfolderBase]: For 1312/1312 co-relation queries the response was YES. [2024-06-20 16:22:36,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 368 events. 197/368 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1345 event pairs, 51 based on Foata normal form. 2/368 useless extension candidates. Maximal degree in co-relation 1323. Up to 306 conditions per place. [2024-06-20 16:22:36,741 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-20 16:22:36,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 358 flow [2024-06-20 16:22:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:22:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:22:36,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-20 16:22:36,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44086021505376344 [2024-06-20 16:22:36,743 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 211 flow. Second operand 6 states and 82 transitions. [2024-06-20 16:22:36,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 358 flow [2024-06-20 16:22:36,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 341 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:36,745 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 242 flow [2024-06-20 16:22:36,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-20 16:22:36,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-20 16:22:36,746 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 242 flow [2024-06-20 16:22:36,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-20 16:22:36,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:36,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:36,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 16:22:36,746 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)] === [2024-06-20 16:22:36,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:36,747 INFO L85 PathProgramCache]: Analyzing trace with hash -450960354, now seen corresponding path program 2 times [2024-06-20 16:22:36,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:36,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181791609] [2024-06-20 16:22:36,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:36,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:37,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:37,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181791609] [2024-06-20 16:22:37,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181791609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:37,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:37,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:22:37,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108078077] [2024-06-20 16:22:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:22:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:22:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:22:37,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:22:37,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-20 16:22:37,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:37,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:22:37,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:37,451 INFO L124 PetriNetUnfolderBase]: 192/358 cut-off events. [2024-06-20 16:22:37,451 INFO L125 PetriNetUnfolderBase]: For 1557/1557 co-relation queries the response was YES. [2024-06-20 16:22:37,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369 conditions, 358 events. 192/358 cut-off events. For 1557/1557 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1298 event pairs, 50 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1344. Up to 327 conditions per place. [2024-06-20 16:22:37,453 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 36 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-20 16:22:37,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 344 flow [2024-06-20 16:22:37,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:22:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:22:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-20 16:22:37,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 16:22:37,454 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 242 flow. Second operand 6 states and 74 transitions. [2024-06-20 16:22:37,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 344 flow [2024-06-20 16:22:37,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 329 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:37,457 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 248 flow [2024-06-20 16:22:37,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-20 16:22:37,457 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-20 16:22:37,458 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 248 flow [2024-06-20 16:22:37,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 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) [2024-06-20 16:22:37,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:37,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:37,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 16:22:37,458 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)] === [2024-06-20 16:22:37,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash -106814762, now seen corresponding path program 1 times [2024-06-20 16:22:37,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:37,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210790122] [2024-06-20 16:22:37,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:37,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:38,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210790122] [2024-06-20 16:22:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210790122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:38,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:38,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:38,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936358856] [2024-06-20 16:22:38,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:38,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:38,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:38,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:38,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:38,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:38,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:38,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:38,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:38,341 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-20 16:22:38,342 INFO L125 PetriNetUnfolderBase]: For 1803/1803 co-relation queries the response was YES. [2024-06-20 16:22:38,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 365 events. 202/365 cut-off events. For 1803/1803 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1257 event pairs, 50 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 1384. Up to 342 conditions per place. [2024-06-20 16:22:38,344 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-20 16:22:38,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 380 flow [2024-06-20 16:22:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-20 16:22:38,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-20 16:22:38,345 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 248 flow. Second operand 7 states and 80 transitions. [2024-06-20 16:22:38,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 380 flow [2024-06-20 16:22:38,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 346 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:38,347 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 253 flow [2024-06-20 16:22:38,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-20 16:22:38,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-20 16:22:38,348 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 253 flow [2024-06-20 16:22:38,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:38,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:38,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:38,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 16:22:38,349 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)] === [2024-06-20 16:22:38,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash 806333126, now seen corresponding path program 1 times [2024-06-20 16:22:38,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:38,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722716544] [2024-06-20 16:22:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:38,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:38,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:38,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722716544] [2024-06-20 16:22:38,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722716544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:38,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:38,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:38,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416718765] [2024-06-20 16:22:38,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:38,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:38,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:38,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:38,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:38,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:38,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:38,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:39,122 INFO L124 PetriNetUnfolderBase]: 208/375 cut-off events. [2024-06-20 16:22:39,122 INFO L125 PetriNetUnfolderBase]: For 2062/2062 co-relation queries the response was YES. [2024-06-20 16:22:39,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 375 events. 208/375 cut-off events. For 2062/2062 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1301 event pairs, 50 based on Foata normal form. 2/375 useless extension candidates. Maximal degree in co-relation 1466. Up to 308 conditions per place. [2024-06-20 16:22:39,124 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 42 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-20 16:22:39,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 61 transitions, 445 flow [2024-06-20 16:22:39,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:39,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-20 16:22:39,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-20 16:22:39,126 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 253 flow. Second operand 7 states and 89 transitions. [2024-06-20 16:22:39,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 61 transitions, 445 flow [2024-06-20 16:22:39,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 422 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:39,131 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 298 flow [2024-06-20 16:22:39,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-20 16:22:39,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-20 16:22:39,132 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 298 flow [2024-06-20 16:22:39,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:39,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:39,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:39,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 16:22:39,133 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)] === [2024-06-20 16:22:39,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:39,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1569615836, now seen corresponding path program 2 times [2024-06-20 16:22:39,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:39,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413533836] [2024-06-20 16:22:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:39,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:39,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:39,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413533836] [2024-06-20 16:22:39,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413533836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:39,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:39,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488753596] [2024-06-20 16:22:39,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:39,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:39,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:39,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:39,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:39,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:39,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:39,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:39,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:39,984 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-20 16:22:39,985 INFO L125 PetriNetUnfolderBase]: For 2401/2401 co-relation queries the response was YES. [2024-06-20 16:22:39,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 380 events. 211/380 cut-off events. For 2401/2401 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1314 event pairs, 48 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1579. Up to 356 conditions per place. [2024-06-20 16:22:39,987 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 46 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-20 16:22:39,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 484 flow [2024-06-20 16:22:39,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-20 16:22:39,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37327188940092165 [2024-06-20 16:22:39,989 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 298 flow. Second operand 7 states and 81 transitions. [2024-06-20 16:22:39,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 484 flow [2024-06-20 16:22:39,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 464 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:39,992 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 341 flow [2024-06-20 16:22:39,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=341, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-20 16:22:39,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-20 16:22:39,993 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 341 flow [2024-06-20 16:22:39,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:39,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:39,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:39,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 16:22:39,994 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)] === [2024-06-20 16:22:39,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:39,994 INFO L85 PathProgramCache]: Analyzing trace with hash 983701796, now seen corresponding path program 3 times [2024-06-20 16:22:39,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:39,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179323816] [2024-06-20 16:22:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:39,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:40,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:40,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179323816] [2024-06-20 16:22:40,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179323816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:40,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:40,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:40,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705422154] [2024-06-20 16:22:40,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:40,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:40,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:40,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:40,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:40,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:40,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 341 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:40,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:40,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:40,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:40,766 INFO L124 PetriNetUnfolderBase]: 209/377 cut-off events. [2024-06-20 16:22:40,779 INFO L125 PetriNetUnfolderBase]: For 2832/2832 co-relation queries the response was YES. [2024-06-20 16:22:40,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 377 events. 209/377 cut-off events. For 2832/2832 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1299 event pairs, 48 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1624. Up to 360 conditions per place. [2024-06-20 16:22:40,782 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-20 16:22:40,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 473 flow [2024-06-20 16:22:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:40,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-20 16:22:40,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-20 16:22:40,797 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 341 flow. Second operand 7 states and 78 transitions. [2024-06-20 16:22:40,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 473 flow [2024-06-20 16:22:40,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 450 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:40,800 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 343 flow [2024-06-20 16:22:40,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-20 16:22:40,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-20 16:22:40,801 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 343 flow [2024-06-20 16:22:40,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:40,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:40,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:40,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 16:22:40,801 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)] === [2024-06-20 16:22:40,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:40,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1470764227, now seen corresponding path program 1 times [2024-06-20 16:22:40,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:40,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896430089] [2024-06-20 16:22:40,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:40,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:41,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:41,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:41,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896430089] [2024-06-20 16:22:41,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896430089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:41,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:41,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:41,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090480907] [2024-06-20 16:22:41,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:41,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:41,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:41,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:41,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:41,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:22:41,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:41,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:41,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:22:41,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:41,737 INFO L124 PetriNetUnfolderBase]: 197/364 cut-off events. [2024-06-20 16:22:41,737 INFO L125 PetriNetUnfolderBase]: For 3257/3257 co-relation queries the response was YES. [2024-06-20 16:22:41,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 364 events. 197/364 cut-off events. For 3257/3257 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1277 event pairs, 46 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1598. Up to 282 conditions per place. [2024-06-20 16:22:41,739 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 43 selfloop transitions, 18 changer transitions 0/69 dead transitions. [2024-06-20 16:22:41,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 511 flow [2024-06-20 16:22:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-20 16:22:41,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-20 16:22:41,740 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 343 flow. Second operand 8 states and 105 transitions. [2024-06-20 16:22:41,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 511 flow [2024-06-20 16:22:41,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 486 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:41,744 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 376 flow [2024-06-20 16:22:41,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=376, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2024-06-20 16:22:41,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-20 16:22:41,745 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 376 flow [2024-06-20 16:22:41,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:41,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:41,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:41,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 16:22:41,745 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)] === [2024-06-20 16:22:41,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash -773481648, now seen corresponding path program 1 times [2024-06-20 16:22:41,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:41,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361979435] [2024-06-20 16:22:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:41,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361979435] [2024-06-20 16:22:42,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361979435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:42,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:42,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363940445] [2024-06-20 16:22:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:42,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:42,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:42,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:42,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:42,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:42,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:42,473 INFO L124 PetriNetUnfolderBase]: 210/379 cut-off events. [2024-06-20 16:22:42,473 INFO L125 PetriNetUnfolderBase]: For 3655/3655 co-relation queries the response was YES. [2024-06-20 16:22:42,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 379 events. 210/379 cut-off events. For 3655/3655 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1312 event pairs, 49 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1747. Up to 310 conditions per place. [2024-06-20 16:22:42,475 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 45 selfloop transitions, 24 changer transitions 0/71 dead transitions. [2024-06-20 16:22:42,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 71 transitions, 590 flow [2024-06-20 16:22:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-20 16:22:42,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423963133640553 [2024-06-20 16:22:42,477 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 376 flow. Second operand 7 states and 92 transitions. [2024-06-20 16:22:42,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 71 transitions, 590 flow [2024-06-20 16:22:42,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 550 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:42,484 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 403 flow [2024-06-20 16:22:42,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=403, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-06-20 16:22:42,485 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-20 16:22:42,485 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 403 flow [2024-06-20 16:22:42,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:42,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:42,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:42,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 16:22:42,486 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)] === [2024-06-20 16:22:42,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:42,486 INFO L85 PathProgramCache]: Analyzing trace with hash 968034464, now seen corresponding path program 2 times [2024-06-20 16:22:42,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:42,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125816500] [2024-06-20 16:22:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:42,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:43,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:43,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125816500] [2024-06-20 16:22:43,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125816500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:43,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:43,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918051638] [2024-06-20 16:22:43,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:43,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:43,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:43,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:43,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 403 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:43,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:43,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:43,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:43,226 INFO L124 PetriNetUnfolderBase]: 213/384 cut-off events. [2024-06-20 16:22:43,226 INFO L125 PetriNetUnfolderBase]: For 4182/4182 co-relation queries the response was YES. [2024-06-20 16:22:43,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 384 events. 213/384 cut-off events. For 4182/4182 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1346 event pairs, 49 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 1816. Up to 314 conditions per place. [2024-06-20 16:22:43,229 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 45 selfloop transitions, 23 changer transitions 0/70 dead transitions. [2024-06-20 16:22:43,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 613 flow [2024-06-20 16:22:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-20 16:22:43,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-20 16:22:43,230 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 403 flow. Second operand 7 states and 88 transitions. [2024-06-20 16:22:43,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 613 flow [2024-06-20 16:22:43,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 551 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:43,234 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 411 flow [2024-06-20 16:22:43,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-20 16:22:43,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-20 16:22:43,235 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 411 flow [2024-06-20 16:22:43,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:43,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:43,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:43,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 16:22:43,236 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)] === [2024-06-20 16:22:43,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:43,236 INFO L85 PathProgramCache]: Analyzing trace with hash -773475851, now seen corresponding path program 1 times [2024-06-20 16:22:43,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:43,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367441196] [2024-06-20 16:22:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:43,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:43,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:43,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367441196] [2024-06-20 16:22:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367441196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:43,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:43,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752724857] [2024-06-20 16:22:43,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:43,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:43,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:43,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:43,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 411 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:43,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:43,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:43,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:44,110 INFO L124 PetriNetUnfolderBase]: 251/446 cut-off events. [2024-06-20 16:22:44,110 INFO L125 PetriNetUnfolderBase]: For 5820/5820 co-relation queries the response was YES. [2024-06-20 16:22:44,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 446 events. 251/446 cut-off events. For 5820/5820 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1657 event pairs, 54 based on Foata normal form. 6/450 useless extension candidates. Maximal degree in co-relation 2109. Up to 303 conditions per place. [2024-06-20 16:22:44,112 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 24 changer transitions 0/83 dead transitions. [2024-06-20 16:22:44,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 687 flow [2024-06-20 16:22:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-20 16:22:44,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-20 16:22:44,114 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 411 flow. Second operand 8 states and 105 transitions. [2024-06-20 16:22:44,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 687 flow [2024-06-20 16:22:44,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 652 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:44,119 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 482 flow [2024-06-20 16:22:44,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-06-20 16:22:44,119 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-20 16:22:44,119 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 482 flow [2024-06-20 16:22:44,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:44,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:44,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:44,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 16:22:44,120 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)] === [2024-06-20 16:22:44,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:44,120 INFO L85 PathProgramCache]: Analyzing trace with hash 418828349, now seen corresponding path program 2 times [2024-06-20 16:22:44,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:44,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580498172] [2024-06-20 16:22:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:44,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:44,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:44,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:44,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580498172] [2024-06-20 16:22:44,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580498172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:44,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:44,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:44,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650962919] [2024-06-20 16:22:44,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:44,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:44,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:44,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:44,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:44,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:44,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 482 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:44,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:44,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:44,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:44,956 INFO L124 PetriNetUnfolderBase]: 260/461 cut-off events. [2024-06-20 16:22:44,956 INFO L125 PetriNetUnfolderBase]: For 6414/6414 co-relation queries the response was YES. [2024-06-20 16:22:44,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 461 events. 260/461 cut-off events. For 6414/6414 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1700 event pairs, 53 based on Foata normal form. 3/462 useless extension candidates. Maximal degree in co-relation 2343. Up to 410 conditions per place. [2024-06-20 16:22:44,969 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-06-20 16:22:44,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 746 flow [2024-06-20 16:22:44,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-20 16:22:44,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:22:44,971 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 482 flow. Second operand 8 states and 96 transitions. [2024-06-20 16:22:44,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 746 flow [2024-06-20 16:22:44,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 83 transitions, 721 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:44,977 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 536 flow [2024-06-20 16:22:44,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=536, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-06-20 16:22:44,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-20 16:22:44,992 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 536 flow [2024-06-20 16:22:44,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:44,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:44,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:44,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 16:22:44,993 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)] === [2024-06-20 16:22:44,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:44,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1322856655, now seen corresponding path program 3 times [2024-06-20 16:22:44,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:44,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205460192] [2024-06-20 16:22:44,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:44,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:45,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:45,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205460192] [2024-06-20 16:22:45,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205460192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:45,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:45,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:45,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627054733] [2024-06-20 16:22:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:45,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:45,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:45,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:45,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:45,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 536 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:45,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:45,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:45,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:45,861 INFO L124 PetriNetUnfolderBase]: 269/476 cut-off events. [2024-06-20 16:22:45,861 INFO L125 PetriNetUnfolderBase]: For 7341/7341 co-relation queries the response was YES. [2024-06-20 16:22:45,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 476 events. 269/476 cut-off events. For 7341/7341 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1768 event pairs, 53 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2474. Up to 433 conditions per place. [2024-06-20 16:22:45,864 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 15 changer transitions 0/85 dead transitions. [2024-06-20 16:22:45,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 792 flow [2024-06-20 16:22:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:45,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:45,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-20 16:22:45,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 16:22:45,865 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 536 flow. Second operand 8 states and 94 transitions. [2024-06-20 16:22:45,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 792 flow [2024-06-20 16:22:45,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 764 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:45,871 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 565 flow [2024-06-20 16:22:45,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=565, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-06-20 16:22:45,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-20 16:22:45,872 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 565 flow [2024-06-20 16:22:45,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:45,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:45,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:45,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 16:22:45,873 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)] === [2024-06-20 16:22:45,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 430252533, now seen corresponding path program 4 times [2024-06-20 16:22:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:45,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796096259] [2024-06-20 16:22:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:46,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:46,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796096259] [2024-06-20 16:22:46,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796096259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:46,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:46,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:46,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999498588] [2024-06-20 16:22:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:46,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:46,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:46,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:46,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:46,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 565 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:46,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:46,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:46,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:46,704 INFO L124 PetriNetUnfolderBase]: 263/467 cut-off events. [2024-06-20 16:22:46,705 INFO L125 PetriNetUnfolderBase]: For 7354/7354 co-relation queries the response was YES. [2024-06-20 16:22:46,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 467 events. 263/467 cut-off events. For 7354/7354 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1730 event pairs, 51 based on Foata normal form. 3/468 useless extension candidates. Maximal degree in co-relation 2413. Up to 441 conditions per place. [2024-06-20 16:22:46,708 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 12 changer transitions 0/82 dead transitions. [2024-06-20 16:22:46,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 749 flow [2024-06-20 16:22:46,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:46,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-20 16:22:46,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-20 16:22:46,710 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 565 flow. Second operand 8 states and 89 transitions. [2024-06-20 16:22:46,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 749 flow [2024-06-20 16:22:46,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 695 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:46,720 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 540 flow [2024-06-20 16:22:46,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=540, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-06-20 16:22:46,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-20 16:22:46,720 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 540 flow [2024-06-20 16:22:46,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:46,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:46,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 16:22:46,721 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)] === [2024-06-20 16:22:46,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1174687904, now seen corresponding path program 3 times [2024-06-20 16:22:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473425553] [2024-06-20 16:22:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:46,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:47,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:47,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473425553] [2024-06-20 16:22:47,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473425553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:47,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:47,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:47,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325589575] [2024-06-20 16:22:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:47,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:47,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:47,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:47,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 540 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:47,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:47,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:47,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:47,477 INFO L124 PetriNetUnfolderBase]: 261/464 cut-off events. [2024-06-20 16:22:47,477 INFO L125 PetriNetUnfolderBase]: For 7171/7171 co-relation queries the response was YES. [2024-06-20 16:22:47,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 464 events. 261/464 cut-off events. For 7171/7171 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1720 event pairs, 52 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 2356. Up to 444 conditions per place. [2024-06-20 16:22:47,481 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 66 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-06-20 16:22:47,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 79 transitions, 710 flow [2024-06-20 16:22:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-20 16:22:47,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640552995391705 [2024-06-20 16:22:47,482 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 540 flow. Second operand 7 states and 79 transitions. [2024-06-20 16:22:47,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 79 transitions, 710 flow [2024-06-20 16:22:47,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 670 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 16:22:47,491 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 527 flow [2024-06-20 16:22:47,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-06-20 16:22:47,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-20 16:22:47,492 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 527 flow [2024-06-20 16:22:47,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:47,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:47,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:47,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 16:22:47,492 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)] === [2024-06-20 16:22:47,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:47,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1673720617, now seen corresponding path program 1 times [2024-06-20 16:22:47,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:47,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607676745] [2024-06-20 16:22:47,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:47,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:48,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:48,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607676745] [2024-06-20 16:22:48,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607676745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:48,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:48,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:48,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587482468] [2024-06-20 16:22:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:48,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:48,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:48,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:22:48,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 527 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:48,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:48,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:22:48,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:48,514 INFO L124 PetriNetUnfolderBase]: 252/459 cut-off events. [2024-06-20 16:22:48,515 INFO L125 PetriNetUnfolderBase]: For 8199/8199 co-relation queries the response was YES. [2024-06-20 16:22:48,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2379 conditions, 459 events. 252/459 cut-off events. For 8199/8199 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1751 event pairs, 30 based on Foata normal form. 2/459 useless extension candidates. Maximal degree in co-relation 2337. Up to 333 conditions per place. [2024-06-20 16:22:48,520 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 62 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-06-20 16:22:48,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 779 flow [2024-06-20 16:22:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:48,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-20 16:22:48,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:22:48,521 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 527 flow. Second operand 8 states and 104 transitions. [2024-06-20 16:22:48,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 779 flow [2024-06-20 16:22:48,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 734 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 16:22:48,531 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 532 flow [2024-06-20 16:22:48,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=532, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-20 16:22:48,532 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-20 16:22:48,532 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 532 flow [2024-06-20 16:22:48,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:48,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:48,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:48,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 16:22:48,533 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)] === [2024-06-20 16:22:48,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1673781191, now seen corresponding path program 1 times [2024-06-20 16:22:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:48,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052674604] [2024-06-20 16:22:48,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:48,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:49,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:49,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:49,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052674604] [2024-06-20 16:22:49,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052674604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:49,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:49,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:49,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539249131] [2024-06-20 16:22:49,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:49,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:49,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:49,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:49,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:49,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:49,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 532 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:49,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:49,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:49,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:49,469 INFO L124 PetriNetUnfolderBase]: 271/482 cut-off events. [2024-06-20 16:22:49,469 INFO L125 PetriNetUnfolderBase]: For 8587/8587 co-relation queries the response was YES. [2024-06-20 16:22:49,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 482 events. 271/482 cut-off events. For 8587/8587 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1829 event pairs, 50 based on Foata normal form. 1/481 useless extension candidates. Maximal degree in co-relation 2477. Up to 378 conditions per place. [2024-06-20 16:22:49,472 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 65 selfloop transitions, 27 changer transitions 0/94 dead transitions. [2024-06-20 16:22:49,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 94 transitions, 832 flow [2024-06-20 16:22:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-20 16:22:49,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-20 16:22:49,473 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 532 flow. Second operand 8 states and 101 transitions. [2024-06-20 16:22:49,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 94 transitions, 832 flow [2024-06-20 16:22:49,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 790 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:49,483 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 594 flow [2024-06-20 16:22:49,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2024-06-20 16:22:49,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-20 16:22:49,484 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 594 flow [2024-06-20 16:22:49,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:49,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:49,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:49,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 16:22:49,485 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)] === [2024-06-20 16:22:49,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1673781067, now seen corresponding path program 2 times [2024-06-20 16:22:49,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:49,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190247115] [2024-06-20 16:22:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:49,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:50,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190247115] [2024-06-20 16:22:50,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190247115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809374638] [2024-06-20 16:22:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:50,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:50,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:50,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:50,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:22:50,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 594 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:50,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:50,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:22:50,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:50,582 INFO L124 PetriNetUnfolderBase]: 263/478 cut-off events. [2024-06-20 16:22:50,582 INFO L125 PetriNetUnfolderBase]: For 9912/9912 co-relation queries the response was YES. [2024-06-20 16:22:50,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2562 conditions, 478 events. 263/478 cut-off events. For 9912/9912 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1864 event pairs, 46 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2517. Up to 384 conditions per place. [2024-06-20 16:22:50,585 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 65 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-20 16:22:50,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 805 flow [2024-06-20 16:22:50,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:50,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-20 16:22:50,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:22:50,586 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 594 flow. Second operand 8 states and 104 transitions. [2024-06-20 16:22:50,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 805 flow [2024-06-20 16:22:50,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 762 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:50,595 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 602 flow [2024-06-20 16:22:50,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=602, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-06-20 16:22:50,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-20 16:22:50,596 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 602 flow [2024-06-20 16:22:50,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:50,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:50,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:50,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 16:22:50,597 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)] === [2024-06-20 16:22:50,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1676582351, now seen corresponding path program 2 times [2024-06-20 16:22:50,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:50,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763081301] [2024-06-20 16:22:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:50,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:51,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:51,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763081301] [2024-06-20 16:22:51,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763081301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:51,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:51,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:51,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898990652] [2024-06-20 16:22:51,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:51,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:51,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:51,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:51,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:51,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:51,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 602 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:51,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:51,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:51,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:51,500 INFO L124 PetriNetUnfolderBase]: 278/495 cut-off events. [2024-06-20 16:22:51,501 INFO L125 PetriNetUnfolderBase]: For 10282/10282 co-relation queries the response was YES. [2024-06-20 16:22:51,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2666 conditions, 495 events. 278/495 cut-off events. For 10282/10282 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1912 event pairs, 50 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2620. Up to 423 conditions per place. [2024-06-20 16:22:51,504 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 66 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2024-06-20 16:22:51,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 824 flow [2024-06-20 16:22:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:51,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-20 16:22:51,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-20 16:22:51,534 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 602 flow. Second operand 8 states and 97 transitions. [2024-06-20 16:22:51,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 824 flow [2024-06-20 16:22:51,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 786 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:51,545 INFO L231 Difference]: Finished difference. Result has 96 places, 82 transitions, 637 flow [2024-06-20 16:22:51,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=96, PETRI_TRANSITIONS=82} [2024-06-20 16:22:51,546 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-20 16:22:51,546 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 82 transitions, 637 flow [2024-06-20 16:22:51,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:51,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:51,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:51,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 16:22:51,547 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)] === [2024-06-20 16:22:51,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1653746593, now seen corresponding path program 3 times [2024-06-20 16:22:51,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:51,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394171307] [2024-06-20 16:22:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:51,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:52,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:52,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394171307] [2024-06-20 16:22:52,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394171307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:52,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:52,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:52,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392589520] [2024-06-20 16:22:52,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:52,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:52,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:52,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:52,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:22:52,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 82 transitions, 637 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:52,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:52,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:22:52,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:52,589 INFO L124 PetriNetUnfolderBase]: 263/478 cut-off events. [2024-06-20 16:22:52,589 INFO L125 PetriNetUnfolderBase]: For 10928/10928 co-relation queries the response was YES. [2024-06-20 16:22:52,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2590 conditions, 478 events. 263/478 cut-off events. For 10928/10928 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1860 event pairs, 45 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2544. Up to 397 conditions per place. [2024-06-20 16:22:52,593 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 65 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-20 16:22:52,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 827 flow [2024-06-20 16:22:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:52,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-20 16:22:52,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-20 16:22:52,594 INFO L175 Difference]: Start difference. First operand has 96 places, 82 transitions, 637 flow. Second operand 8 states and 101 transitions. [2024-06-20 16:22:52,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 827 flow [2024-06-20 16:22:52,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 770 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:52,605 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 616 flow [2024-06-20 16:22:52,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=616, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-06-20 16:22:52,605 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-20 16:22:52,605 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 616 flow [2024-06-20 16:22:52,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:52,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:52,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:52,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 16:22:52,606 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)] === [2024-06-20 16:22:52,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1653746717, now seen corresponding path program 3 times [2024-06-20 16:22:52,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056741769] [2024-06-20 16:22:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:53,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:53,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056741769] [2024-06-20 16:22:53,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056741769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:53,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:53,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:53,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758740663] [2024-06-20 16:22:53,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:53,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:53,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:53,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:53,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:53,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 616 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:53,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:53,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:53,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:53,599 INFO L124 PetriNetUnfolderBase]: 278/495 cut-off events. [2024-06-20 16:22:53,599 INFO L125 PetriNetUnfolderBase]: For 11262/11262 co-relation queries the response was YES. [2024-06-20 16:22:53,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 495 events. 278/495 cut-off events. For 11262/11262 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1891 event pairs, 49 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2626. Up to 417 conditions per place. [2024-06-20 16:22:53,603 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 29 changer transitions 0/96 dead transitions. [2024-06-20 16:22:53,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 96 transitions, 850 flow [2024-06-20 16:22:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:22:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:22:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-20 16:22:53,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-20 16:22:53,604 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 616 flow. Second operand 9 states and 106 transitions. [2024-06-20 16:22:53,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 96 transitions, 850 flow [2024-06-20 16:22:53,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 799 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 16:22:53,615 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 653 flow [2024-06-20 16:22:53,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=653, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-06-20 16:22:53,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-20 16:22:53,616 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 653 flow [2024-06-20 16:22:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:53,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:53,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:53,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 16:22:53,616 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)] === [2024-06-20 16:22:53,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1769037887, now seen corresponding path program 4 times [2024-06-20 16:22:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:53,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603311290] [2024-06-20 16:22:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:54,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603311290] [2024-06-20 16:22:54,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603311290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:54,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:54,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:54,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13236110] [2024-06-20 16:22:54,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:54,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:54,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:54,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:54,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 653 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:54,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:54,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:54,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:54,576 INFO L124 PetriNetUnfolderBase]: 281/500 cut-off events. [2024-06-20 16:22:54,576 INFO L125 PetriNetUnfolderBase]: For 12123/12123 co-relation queries the response was YES. [2024-06-20 16:22:54,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2745 conditions, 500 events. 281/500 cut-off events. For 12123/12123 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1921 event pairs, 49 based on Foata normal form. 1/499 useless extension candidates. Maximal degree in co-relation 2697. Up to 408 conditions per place. [2024-06-20 16:22:54,585 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 32 changer transitions 0/104 dead transitions. [2024-06-20 16:22:54,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 104 transitions, 977 flow [2024-06-20 16:22:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-20 16:22:54,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-20 16:22:54,588 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 653 flow. Second operand 8 states and 106 transitions. [2024-06-20 16:22:54,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 104 transitions, 977 flow [2024-06-20 16:22:54,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 104 transitions, 907 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-20 16:22:54,612 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 676 flow [2024-06-20 16:22:54,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=676, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-06-20 16:22:54,615 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-20 16:22:54,616 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 676 flow [2024-06-20 16:22:54,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:54,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:54,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:54,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 16:22:54,616 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)] === [2024-06-20 16:22:54,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:54,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1769215703, now seen corresponding path program 1 times [2024-06-20 16:22:54,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:54,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475058316] [2024-06-20 16:22:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:54,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:55,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:55,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475058316] [2024-06-20 16:22:55,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475058316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:55,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:55,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:55,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933891525] [2024-06-20 16:22:55,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:55,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:55,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:55,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:55,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:55,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 676 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:55,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:55,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:55,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:55,468 INFO L124 PetriNetUnfolderBase]: 320/563 cut-off events. [2024-06-20 16:22:55,468 INFO L125 PetriNetUnfolderBase]: For 15085/15085 co-relation queries the response was YES. [2024-06-20 16:22:55,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 563 events. 320/563 cut-off events. For 15085/15085 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2235 event pairs, 52 based on Foata normal form. 3/564 useless extension candidates. Maximal degree in co-relation 3071. Up to 373 conditions per place. [2024-06-20 16:22:55,472 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 78 selfloop transitions, 34 changer transitions 0/114 dead transitions. [2024-06-20 16:22:55,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 1160 flow [2024-06-20 16:22:55,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:55,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-20 16:22:55,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2024-06-20 16:22:55,474 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 676 flow. Second operand 8 states and 111 transitions. [2024-06-20 16:22:55,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 1160 flow [2024-06-20 16:22:55,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 114 transitions, 1081 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:55,488 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 712 flow [2024-06-20 16:22:55,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=712, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2024-06-20 16:22:55,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-20 16:22:55,491 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 712 flow [2024-06-20 16:22:55,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:55,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:55,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:55,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 16:22:55,491 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)] === [2024-06-20 16:22:55,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:55,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1769042723, now seen corresponding path program 2 times [2024-06-20 16:22:55,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:55,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043275979] [2024-06-20 16:22:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:55,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:55,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043275979] [2024-06-20 16:22:55,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043275979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:55,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:55,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:55,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166542209] [2024-06-20 16:22:55,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:56,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:56,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:56,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:56,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:56,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:56,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 712 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:56,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:56,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:56,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:56,230 INFO L124 PetriNetUnfolderBase]: 314/554 cut-off events. [2024-06-20 16:22:56,230 INFO L125 PetriNetUnfolderBase]: For 15017/15017 co-relation queries the response was YES. [2024-06-20 16:22:56,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 554 events. 314/554 cut-off events. For 15017/15017 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2201 event pairs, 48 based on Foata normal form. 3/555 useless extension candidates. Maximal degree in co-relation 3024. Up to 369 conditions per place. [2024-06-20 16:22:56,234 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 39 changer transitions 0/113 dead transitions. [2024-06-20 16:22:56,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 113 transitions, 1044 flow [2024-06-20 16:22:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-20 16:22:56,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2024-06-20 16:22:56,261 INFO L175 Difference]: Start difference. First operand has 102 places, 92 transitions, 712 flow. Second operand 8 states and 110 transitions. [2024-06-20 16:22:56,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 113 transitions, 1044 flow [2024-06-20 16:22:56,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 113 transitions, 1005 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:56,276 INFO L231 Difference]: Finished difference. Result has 107 places, 92 transitions, 756 flow [2024-06-20 16:22:56,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=756, PETRI_PLACES=107, PETRI_TRANSITIONS=92} [2024-06-20 16:22:56,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-20 16:22:56,277 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 756 flow [2024-06-20 16:22:56,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:56,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:56,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:56,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 16:22:56,277 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)] === [2024-06-20 16:22:56,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1769222213, now seen corresponding path program 3 times [2024-06-20 16:22:56,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:56,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104391370] [2024-06-20 16:22:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:56,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:56,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:56,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104391370] [2024-06-20 16:22:56,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104391370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:56,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:56,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:56,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226842447] [2024-06-20 16:22:56,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:56,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:56,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:56,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:56,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:56,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:56,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 756 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:56,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:56,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:56,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:57,077 INFO L124 PetriNetUnfolderBase]: 308/545 cut-off events. [2024-06-20 16:22:57,077 INFO L125 PetriNetUnfolderBase]: For 14950/14950 co-relation queries the response was YES. [2024-06-20 16:22:57,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3040 conditions, 545 events. 308/545 cut-off events. For 14950/14950 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2162 event pairs, 54 based on Foata normal form. 3/546 useless extension candidates. Maximal degree in co-relation 2989. Up to 365 conditions per place. [2024-06-20 16:22:57,080 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 35 changer transitions 0/110 dead transitions. [2024-06-20 16:22:57,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 1076 flow [2024-06-20 16:22:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-20 16:22:57,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-20 16:22:57,082 INFO L175 Difference]: Start difference. First operand has 107 places, 92 transitions, 756 flow. Second operand 8 states and 106 transitions. [2024-06-20 16:22:57,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 1076 flow [2024-06-20 16:22:57,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 976 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 16:22:57,099 INFO L231 Difference]: Finished difference. Result has 108 places, 92 transitions, 732 flow [2024-06-20 16:22:57,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=732, PETRI_PLACES=108, PETRI_TRANSITIONS=92} [2024-06-20 16:22:57,100 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-20 16:22:57,100 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 92 transitions, 732 flow [2024-06-20 16:22:57,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:57,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:57,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:57,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 16:22:57,101 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)] === [2024-06-20 16:22:57,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:57,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1792046501, now seen corresponding path program 5 times [2024-06-20 16:22:57,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:57,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725307594] [2024-06-20 16:22:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:57,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:57,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:57,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725307594] [2024-06-20 16:22:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725307594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:57,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:57,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:57,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368935871] [2024-06-20 16:22:57,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:57,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:57,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 92 transitions, 732 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:57,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:57,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:57,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:58,066 INFO L124 PetriNetUnfolderBase]: 311/550 cut-off events. [2024-06-20 16:22:58,066 INFO L125 PetriNetUnfolderBase]: For 14912/14912 co-relation queries the response was YES. [2024-06-20 16:22:58,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3088 conditions, 550 events. 311/550 cut-off events. For 14912/14912 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2174 event pairs, 57 based on Foata normal form. 1/549 useless extension candidates. Maximal degree in co-relation 3036. Up to 478 conditions per place. [2024-06-20 16:22:58,069 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 78 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-20 16:22:58,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 105 transitions, 982 flow [2024-06-20 16:22:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-20 16:22:58,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:22:58,071 INFO L175 Difference]: Start difference. First operand has 108 places, 92 transitions, 732 flow. Second operand 8 states and 96 transitions. [2024-06-20 16:22:58,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 105 transitions, 982 flow [2024-06-20 16:22:58,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 105 transitions, 906 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 16:22:58,089 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 733 flow [2024-06-20 16:22:58,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=733, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-20 16:22:58,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-20 16:22:58,090 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 733 flow [2024-06-20 16:22:58,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:58,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:58,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:58,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 16:22:58,091 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)] === [2024-06-20 16:22:58,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:58,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1791873521, now seen corresponding path program 6 times [2024-06-20 16:22:58,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:58,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918212283] [2024-06-20 16:22:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:58,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:58,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:58,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918212283] [2024-06-20 16:22:58,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918212283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:58,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:58,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:58,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629508459] [2024-06-20 16:22:58,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:58,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:58,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:58,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:58,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:58,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:58,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 733 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:58,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:58,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:58,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:58,963 INFO L124 PetriNetUnfolderBase]: 314/555 cut-off events. [2024-06-20 16:22:58,963 INFO L125 PetriNetUnfolderBase]: For 15892/15892 co-relation queries the response was YES. [2024-06-20 16:22:58,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3094 conditions, 555 events. 314/555 cut-off events. For 15892/15892 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2208 event pairs, 53 based on Foata normal form. 1/554 useless extension candidates. Maximal degree in co-relation 3041. Up to 483 conditions per place. [2024-06-20 16:22:58,966 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 28 changer transitions 0/110 dead transitions. [2024-06-20 16:22:58,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 110 transitions, 1005 flow [2024-06-20 16:22:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-20 16:22:58,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 16:22:58,989 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 733 flow. Second operand 8 states and 100 transitions. [2024-06-20 16:22:58,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 110 transitions, 1005 flow [2024-06-20 16:22:59,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 948 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:59,007 INFO L231 Difference]: Finished difference. Result has 111 places, 96 transitions, 763 flow [2024-06-20 16:22:59,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=763, PETRI_PLACES=111, PETRI_TRANSITIONS=96} [2024-06-20 16:22:59,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-20 16:22:59,008 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 96 transitions, 763 flow [2024-06-20 16:22:59,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:59,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:59,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:59,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 16:22:59,008 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)] === [2024-06-20 16:22:59,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash -639370469, now seen corresponding path program 4 times [2024-06-20 16:22:59,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:59,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047253135] [2024-06-20 16:22:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:59,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047253135] [2024-06-20 16:22:59,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047253135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974258788] [2024-06-20 16:22:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:59,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:59,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:59,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 96 transitions, 763 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:59,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:59,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:59,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:59,848 INFO L124 PetriNetUnfolderBase]: 323/570 cut-off events. [2024-06-20 16:22:59,848 INFO L125 PetriNetUnfolderBase]: For 17893/17893 co-relation queries the response was YES. [2024-06-20 16:22:59,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3183 conditions, 570 events. 323/570 cut-off events. For 17893/17893 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2294 event pairs, 50 based on Foata normal form. 3/571 useless extension candidates. Maximal degree in co-relation 3129. Up to 496 conditions per place. [2024-06-20 16:22:59,852 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2024-06-20 16:22:59,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 1101 flow [2024-06-20 16:22:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-20 16:22:59,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 16:22:59,853 INFO L175 Difference]: Start difference. First operand has 111 places, 96 transitions, 763 flow. Second operand 8 states and 98 transitions. [2024-06-20 16:22:59,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 1101 flow [2024-06-20 16:22:59,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 1034 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:59,871 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 753 flow [2024-06-20 16:22:59,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=753, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-06-20 16:22:59,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-20 16:22:59,872 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 753 flow [2024-06-20 16:22:59,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:59,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:59,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:59,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 16:22:59,873 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)] === [2024-06-20 16:22:59,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:59,873 INFO L85 PathProgramCache]: Analyzing trace with hash -631089749, now seen corresponding path program 5 times [2024-06-20 16:22:59,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:59,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326401012] [2024-06-20 16:22:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:59,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:00,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:00,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326401012] [2024-06-20 16:23:00,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326401012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:00,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:00,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:00,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972824099] [2024-06-20 16:23:00,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:00,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:00,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:00,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:00,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:00,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 753 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:00,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:00,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:00,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:00,690 INFO L124 PetriNetUnfolderBase]: 332/585 cut-off events. [2024-06-20 16:23:00,690 INFO L125 PetriNetUnfolderBase]: For 18959/18959 co-relation queries the response was YES. [2024-06-20 16:23:00,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3259 conditions, 585 events. 332/585 cut-off events. For 18959/18959 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2379 event pairs, 56 based on Foata normal form. 3/586 useless extension candidates. Maximal degree in co-relation 3204. Up to 546 conditions per place. [2024-06-20 16:23:00,693 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-20 16:23:00,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 112 transitions, 1021 flow [2024-06-20 16:23:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-20 16:23:00,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 16:23:00,694 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 753 flow. Second operand 8 states and 92 transitions. [2024-06-20 16:23:00,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 112 transitions, 1021 flow [2024-06-20 16:23:00,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 944 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:00,714 INFO L231 Difference]: Finished difference. Result has 114 places, 100 transitions, 729 flow [2024-06-20 16:23:00,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=729, PETRI_PLACES=114, PETRI_TRANSITIONS=100} [2024-06-20 16:23:00,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-20 16:23:00,714 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 100 transitions, 729 flow [2024-06-20 16:23:00,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:00,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:00,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:00,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 16:23:00,715 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)] === [2024-06-20 16:23:00,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash 105033843, now seen corresponding path program 6 times [2024-06-20 16:23:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:00,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778367077] [2024-06-20 16:23:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:00,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778367077] [2024-06-20 16:23:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778367077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:01,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:01,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:01,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179866650] [2024-06-20 16:23:01,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:01,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:01,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:01,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:01,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:01,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:01,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 100 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:01,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:01,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:01,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:01,470 INFO L124 PetriNetUnfolderBase]: 326/576 cut-off events. [2024-06-20 16:23:01,471 INFO L125 PetriNetUnfolderBase]: For 18291/18291 co-relation queries the response was YES. [2024-06-20 16:23:01,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 576 events. 326/576 cut-off events. For 18291/18291 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2345 event pairs, 54 based on Foata normal form. 3/577 useless extension candidates. Maximal degree in co-relation 3048. Up to 500 conditions per place. [2024-06-20 16:23:01,475 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 20 changer transitions 0/114 dead transitions. [2024-06-20 16:23:01,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 114 transitions, 989 flow [2024-06-20 16:23:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-20 16:23:01,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-20 16:23:01,480 INFO L175 Difference]: Start difference. First operand has 114 places, 100 transitions, 729 flow. Second operand 8 states and 98 transitions. [2024-06-20 16:23:01,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 114 transitions, 989 flow [2024-06-20 16:23:01,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 960 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:01,507 INFO L231 Difference]: Finished difference. Result has 116 places, 100 transitions, 745 flow [2024-06-20 16:23:01,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=745, PETRI_PLACES=116, PETRI_TRANSITIONS=100} [2024-06-20 16:23:01,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-20 16:23:01,508 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 100 transitions, 745 flow [2024-06-20 16:23:01,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:01,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:01,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:01,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 16:23:01,509 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)] === [2024-06-20 16:23:01,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:01,509 INFO L85 PathProgramCache]: Analyzing trace with hash -639370655, now seen corresponding path program 7 times [2024-06-20 16:23:01,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:01,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797400843] [2024-06-20 16:23:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:01,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:02,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:02,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:02,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797400843] [2024-06-20 16:23:02,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797400843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:02,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:02,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:02,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564300779] [2024-06-20 16:23:02,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:02,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:02,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:02,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:02,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:02,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:02,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 100 transitions, 745 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:02,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:02,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:02,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:02,314 INFO L124 PetriNetUnfolderBase]: 324/573 cut-off events. [2024-06-20 16:23:02,315 INFO L125 PetriNetUnfolderBase]: For 17565/17565 co-relation queries the response was YES. [2024-06-20 16:23:02,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3107 conditions, 573 events. 324/573 cut-off events. For 17565/17565 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2309 event pairs, 58 based on Foata normal form. 1/572 useless extension candidates. Maximal degree in co-relation 3050. Up to 550 conditions per place. [2024-06-20 16:23:02,318 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 93 selfloop transitions, 13 changer transitions 0/108 dead transitions. [2024-06-20 16:23:02,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 108 transitions, 975 flow [2024-06-20 16:23:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:02,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-20 16:23:02,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:23:02,319 INFO L175 Difference]: Start difference. First operand has 116 places, 100 transitions, 745 flow. Second operand 8 states and 88 transitions. [2024-06-20 16:23:02,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 108 transitions, 975 flow [2024-06-20 16:23:02,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 108 transitions, 915 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:02,342 INFO L231 Difference]: Finished difference. Result has 117 places, 100 transitions, 716 flow [2024-06-20 16:23:02,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=716, PETRI_PLACES=117, PETRI_TRANSITIONS=100} [2024-06-20 16:23:02,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 87 predicate places. [2024-06-20 16:23:02,343 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 100 transitions, 716 flow [2024-06-20 16:23:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:02,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:02,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:02,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 16:23:02,343 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)] === [2024-06-20 16:23:02,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash -630792831, now seen corresponding path program 1 times [2024-06-20 16:23:02,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:02,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70072667] [2024-06-20 16:23:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:02,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:03,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:03,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70072667] [2024-06-20 16:23:03,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70072667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:03,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:03,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:03,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131790058] [2024-06-20 16:23:03,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:03,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:03,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:03,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:03,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:03,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:03,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 100 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:03,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:03,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:03,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:03,420 INFO L124 PetriNetUnfolderBase]: 320/567 cut-off events. [2024-06-20 16:23:03,420 INFO L125 PetriNetUnfolderBase]: For 17796/17796 co-relation queries the response was YES. [2024-06-20 16:23:03,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 567 events. 320/567 cut-off events. For 17796/17796 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2284 event pairs, 49 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 2925. Up to 536 conditions per place. [2024-06-20 16:23:03,423 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 14 changer transitions 0/113 dead transitions. [2024-06-20 16:23:03,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 113 transitions, 980 flow [2024-06-20 16:23:03,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:03,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 16:23:03,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-20 16:23:03,425 INFO L175 Difference]: Start difference. First operand has 117 places, 100 transitions, 716 flow. Second operand 9 states and 98 transitions. [2024-06-20 16:23:03,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 113 transitions, 980 flow [2024-06-20 16:23:03,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 113 transitions, 934 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:03,446 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 725 flow [2024-06-20 16:23:03,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=725, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2024-06-20 16:23:03,446 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-20 16:23:03,447 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 725 flow [2024-06-20 16:23:03,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:03,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:03,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:03,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 16:23:03,447 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)] === [2024-06-20 16:23:03,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:03,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2064176225, now seen corresponding path program 1 times [2024-06-20 16:23:03,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:03,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134051046] [2024-06-20 16:23:03,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:03,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:04,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:04,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134051046] [2024-06-20 16:23:04,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134051046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:04,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:04,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:04,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177769464] [2024-06-20 16:23:04,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:04,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:04,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:04,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:04,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:04,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 725 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:04,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:04,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:04,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:05,002 INFO L124 PetriNetUnfolderBase]: 317/562 cut-off events. [2024-06-20 16:23:05,002 INFO L125 PetriNetUnfolderBase]: For 17324/17324 co-relation queries the response was YES. [2024-06-20 16:23:05,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2926 conditions, 562 events. 317/562 cut-off events. For 17324/17324 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2240 event pairs, 48 based on Foata normal form. 2/562 useless extension candidates. Maximal degree in co-relation 2867. Up to 533 conditions per place. [2024-06-20 16:23:05,006 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 98 selfloop transitions, 13 changer transitions 0/113 dead transitions. [2024-06-20 16:23:05,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 113 transitions, 971 flow [2024-06-20 16:23:05,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:05,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:05,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-20 16:23:05,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 16:23:05,009 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 725 flow. Second operand 9 states and 96 transitions. [2024-06-20 16:23:05,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 113 transitions, 971 flow [2024-06-20 16:23:05,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 113 transitions, 929 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:05,034 INFO L231 Difference]: Finished difference. Result has 121 places, 102 transitions, 713 flow [2024-06-20 16:23:05,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=713, PETRI_PLACES=121, PETRI_TRANSITIONS=102} [2024-06-20 16:23:05,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-20 16:23:05,036 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 713 flow [2024-06-20 16:23:05,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:05,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:05,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:05,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 16:23:05,037 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)] === [2024-06-20 16:23:05,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:05,038 INFO L85 PathProgramCache]: Analyzing trace with hash 345732563, now seen corresponding path program 1 times [2024-06-20 16:23:05,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:05,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894079720] [2024-06-20 16:23:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:05,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:05,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894079720] [2024-06-20 16:23:05,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894079720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:05,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:05,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952275302] [2024-06-20 16:23:05,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:05,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:05,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:05,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:05,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:05,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 102 transitions, 713 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:05,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:05,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:05,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:06,117 INFO L124 PetriNetUnfolderBase]: 321/570 cut-off events. [2024-06-20 16:23:06,117 INFO L125 PetriNetUnfolderBase]: For 18437/18437 co-relation queries the response was YES. [2024-06-20 16:23:06,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 570 events. 321/570 cut-off events. For 18437/18437 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2328 event pairs, 34 based on Foata normal form. 2/570 useless extension candidates. Maximal degree in co-relation 2896. Up to 377 conditions per place. [2024-06-20 16:23:06,121 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 81 selfloop transitions, 39 changer transitions 0/122 dead transitions. [2024-06-20 16:23:06,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 1081 flow [2024-06-20 16:23:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-20 16:23:06,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-20 16:23:06,122 INFO L175 Difference]: Start difference. First operand has 121 places, 102 transitions, 713 flow. Second operand 9 states and 109 transitions. [2024-06-20 16:23:06,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 1081 flow [2024-06-20 16:23:06,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 1045 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:06,152 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 767 flow [2024-06-20 16:23:06,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=767, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-06-20 16:23:06,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-20 16:23:06,153 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 767 flow [2024-06-20 16:23:06,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:06,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:06,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:06,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 16:23:06,153 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)] === [2024-06-20 16:23:06,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:06,154 INFO L85 PathProgramCache]: Analyzing trace with hash -428742053, now seen corresponding path program 2 times [2024-06-20 16:23:06,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:06,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762755071] [2024-06-20 16:23:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:06,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:07,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:07,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762755071] [2024-06-20 16:23:07,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762755071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:07,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:07,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:07,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746484619] [2024-06-20 16:23:07,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:07,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:07,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:07,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:07,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 767 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:07,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:07,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:07,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:07,421 INFO L124 PetriNetUnfolderBase]: 325/578 cut-off events. [2024-06-20 16:23:07,422 INFO L125 PetriNetUnfolderBase]: For 19367/19367 co-relation queries the response was YES. [2024-06-20 16:23:07,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3062 conditions, 578 events. 325/578 cut-off events. For 19367/19367 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2357 event pairs, 55 based on Foata normal form. 2/578 useless extension candidates. Maximal degree in co-relation 3002. Up to 460 conditions per place. [2024-06-20 16:23:07,425 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 76 selfloop transitions, 44 changer transitions 0/122 dead transitions. [2024-06-20 16:23:07,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 122 transitions, 1059 flow [2024-06-20 16:23:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:23:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:23:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 16:23:07,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 16:23:07,450 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 767 flow. Second operand 11 states and 129 transitions. [2024-06-20 16:23:07,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 122 transitions, 1059 flow [2024-06-20 16:23:07,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 122 transitions, 980 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:07,480 INFO L231 Difference]: Finished difference. Result has 127 places, 104 transitions, 794 flow [2024-06-20 16:23:07,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=794, PETRI_PLACES=127, PETRI_TRANSITIONS=104} [2024-06-20 16:23:07,481 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-20 16:23:07,481 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 104 transitions, 794 flow [2024-06-20 16:23:07,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:07,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:07,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:07,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 16:23:07,482 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)] === [2024-06-20 16:23:07,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:07,482 INFO L85 PathProgramCache]: Analyzing trace with hash 347606513, now seen corresponding path program 3 times [2024-06-20 16:23:07,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:07,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263753714] [2024-06-20 16:23:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:07,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:08,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:08,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263753714] [2024-06-20 16:23:08,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263753714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:08,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:08,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:08,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860322765] [2024-06-20 16:23:08,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:08,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:08,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:08,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:08,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:08,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:08,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 104 transitions, 794 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:08,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:08,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:08,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:08,522 INFO L124 PetriNetUnfolderBase]: 329/586 cut-off events. [2024-06-20 16:23:08,522 INFO L125 PetriNetUnfolderBase]: For 20329/20329 co-relation queries the response was YES. [2024-06-20 16:23:08,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3117 conditions, 586 events. 329/586 cut-off events. For 20329/20329 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2412 event pairs, 55 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 3056. Up to 444 conditions per place. [2024-06-20 16:23:08,525 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 44 changer transitions 0/123 dead transitions. [2024-06-20 16:23:08,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 123 transitions, 1085 flow [2024-06-20 16:23:08,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 16:23:08,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 16:23:08,538 INFO L175 Difference]: Start difference. First operand has 127 places, 104 transitions, 794 flow. Second operand 10 states and 122 transitions. [2024-06-20 16:23:08,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 123 transitions, 1085 flow [2024-06-20 16:23:08,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 983 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:23:08,567 INFO L231 Difference]: Finished difference. Result has 127 places, 105 transitions, 794 flow [2024-06-20 16:23:08,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=794, PETRI_PLACES=127, PETRI_TRANSITIONS=105} [2024-06-20 16:23:08,568 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-20 16:23:08,568 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 105 transitions, 794 flow [2024-06-20 16:23:08,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:08,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:08,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:08,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 16:23:08,574 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)] === [2024-06-20 16:23:08,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash 347610388, now seen corresponding path program 1 times [2024-06-20 16:23:08,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:08,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159376711] [2024-06-20 16:23:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159376711] [2024-06-20 16:23:09,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159376711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:09,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:09,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:09,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642355061] [2024-06-20 16:23:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:09,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:09,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:09,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:09,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:09,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 105 transitions, 794 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:09,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:09,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:09,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:09,595 INFO L124 PetriNetUnfolderBase]: 332/591 cut-off events. [2024-06-20 16:23:09,595 INFO L125 PetriNetUnfolderBase]: For 20579/20579 co-relation queries the response was YES. [2024-06-20 16:23:09,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3129 conditions, 591 events. 332/591 cut-off events. For 20579/20579 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2471 event pairs, 45 based on Foata normal form. 1/590 useless extension candidates. Maximal degree in co-relation 3068. Up to 414 conditions per place. [2024-06-20 16:23:09,598 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 38 changer transitions 0/137 dead transitions. [2024-06-20 16:23:09,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 137 transitions, 1274 flow [2024-06-20 16:23:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:09,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-20 16:23:09,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-20 16:23:09,600 INFO L175 Difference]: Start difference. First operand has 127 places, 105 transitions, 794 flow. Second operand 9 states and 113 transitions. [2024-06-20 16:23:09,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 137 transitions, 1274 flow [2024-06-20 16:23:09,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 137 transitions, 1185 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:09,630 INFO L231 Difference]: Finished difference. Result has 129 places, 117 transitions, 885 flow [2024-06-20 16:23:09,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=885, PETRI_PLACES=129, PETRI_TRANSITIONS=117} [2024-06-20 16:23:09,631 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-20 16:23:09,631 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 117 transitions, 885 flow [2024-06-20 16:23:09,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:09,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:09,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:09,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 16:23:09,632 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)] === [2024-06-20 16:23:09,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash 434451928, now seen corresponding path program 2 times [2024-06-20 16:23:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529333414] [2024-06-20 16:23:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:09,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:10,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529333414] [2024-06-20 16:23:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529333414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385169289] [2024-06-20 16:23:10,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:10,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:10,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:10,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 117 transitions, 885 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:10,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:10,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:10,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:10,781 INFO L124 PetriNetUnfolderBase]: 341/606 cut-off events. [2024-06-20 16:23:10,781 INFO L125 PetriNetUnfolderBase]: For 23397/23397 co-relation queries the response was YES. [2024-06-20 16:23:10,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 606 events. 341/606 cut-off events. For 23397/23397 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2525 event pairs, 53 based on Foata normal form. 3/607 useless extension candidates. Maximal degree in co-relation 3258. Up to 406 conditions per place. [2024-06-20 16:23:10,785 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 87 selfloop transitions, 48 changer transitions 0/137 dead transitions. [2024-06-20 16:23:10,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 137 transitions, 1230 flow [2024-06-20 16:23:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:10,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-20 16:23:10,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-20 16:23:10,786 INFO L175 Difference]: Start difference. First operand has 129 places, 117 transitions, 885 flow. Second operand 9 states and 115 transitions. [2024-06-20 16:23:10,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 137 transitions, 1230 flow [2024-06-20 16:23:10,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 137 transitions, 1188 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:10,819 INFO L231 Difference]: Finished difference. Result has 133 places, 121 transitions, 991 flow [2024-06-20 16:23:10,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=991, PETRI_PLACES=133, PETRI_TRANSITIONS=121} [2024-06-20 16:23:10,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-20 16:23:10,819 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 121 transitions, 991 flow [2024-06-20 16:23:10,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:10,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:10,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:10,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 16:23:10,820 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)] === [2024-06-20 16:23:10,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:10,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1132783332, now seen corresponding path program 3 times [2024-06-20 16:23:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:10,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402646750] [2024-06-20 16:23:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:11,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:11,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402646750] [2024-06-20 16:23:11,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402646750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:11,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:11,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689110663] [2024-06-20 16:23:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:11,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:11,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 121 transitions, 991 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:11,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:11,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:11,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:11,931 INFO L124 PetriNetUnfolderBase]: 344/611 cut-off events. [2024-06-20 16:23:11,931 INFO L125 PetriNetUnfolderBase]: For 22701/22701 co-relation queries the response was YES. [2024-06-20 16:23:11,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3461 conditions, 611 events. 344/611 cut-off events. For 22701/22701 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2566 event pairs, 53 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 3397. Up to 405 conditions per place. [2024-06-20 16:23:11,934 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 86 selfloop transitions, 52 changer transitions 0/140 dead transitions. [2024-06-20 16:23:11,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 140 transitions, 1326 flow [2024-06-20 16:23:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 16:23:11,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:23:11,954 INFO L175 Difference]: Start difference. First operand has 133 places, 121 transitions, 991 flow. Second operand 10 states and 124 transitions. [2024-06-20 16:23:11,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 140 transitions, 1326 flow [2024-06-20 16:23:11,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 140 transitions, 1220 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:11,990 INFO L231 Difference]: Finished difference. Result has 136 places, 123 transitions, 1022 flow [2024-06-20 16:23:11,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1022, PETRI_PLACES=136, PETRI_TRANSITIONS=123} [2024-06-20 16:23:11,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-20 16:23:11,993 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 123 transitions, 1022 flow [2024-06-20 16:23:11,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:11,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:11,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:11,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 16:23:11,994 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)] === [2024-06-20 16:23:11,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:11,994 INFO L85 PathProgramCache]: Analyzing trace with hash -273458306, now seen corresponding path program 4 times [2024-06-20 16:23:11,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:11,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459876192] [2024-06-20 16:23:11,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:12,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:12,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459876192] [2024-06-20 16:23:12,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459876192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:12,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:12,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:12,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670658523] [2024-06-20 16:23:12,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:12,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:12,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:12,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:12,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 123 transitions, 1022 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:12,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:12,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:12,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:12,921 INFO L124 PetriNetUnfolderBase]: 347/616 cut-off events. [2024-06-20 16:23:12,921 INFO L125 PetriNetUnfolderBase]: For 23787/23787 co-relation queries the response was YES. [2024-06-20 16:23:12,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3527 conditions, 616 events. 347/616 cut-off events. For 23787/23787 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2597 event pairs, 49 based on Foata normal form. 1/615 useless extension candidates. Maximal degree in co-relation 3462. Up to 491 conditions per place. [2024-06-20 16:23:12,924 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 38 changer transitions 0/142 dead transitions. [2024-06-20 16:23:12,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 142 transitions, 1386 flow [2024-06-20 16:23:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:12,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-20 16:23:12,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 16:23:12,925 INFO L175 Difference]: Start difference. First operand has 136 places, 123 transitions, 1022 flow. Second operand 9 states and 111 transitions. [2024-06-20 16:23:12,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 142 transitions, 1386 flow [2024-06-20 16:23:12,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 142 transitions, 1283 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:12,969 INFO L231 Difference]: Finished difference. Result has 138 places, 127 transitions, 1050 flow [2024-06-20 16:23:12,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1050, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2024-06-20 16:23:12,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-20 16:23:12,970 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 1050 flow [2024-06-20 16:23:12,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:12,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:12,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:12,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 16:23:12,971 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)] === [2024-06-20 16:23:12,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash -994403207, now seen corresponding path program 4 times [2024-06-20 16:23:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:12,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801499049] [2024-06-20 16:23:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:12,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:13,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:13,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801499049] [2024-06-20 16:23:13,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801499049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:13,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:13,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:13,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234178012] [2024-06-20 16:23:13,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:13,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:13,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:13,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:13,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:13,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:13,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 1050 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:13,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:13,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:13,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:14,056 INFO L124 PetriNetUnfolderBase]: 351/624 cut-off events. [2024-06-20 16:23:14,057 INFO L125 PetriNetUnfolderBase]: For 25884/25884 co-relation queries the response was YES. [2024-06-20 16:23:14,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 624 events. 351/624 cut-off events. For 25884/25884 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2635 event pairs, 33 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 3509. Up to 484 conditions per place. [2024-06-20 16:23:14,060 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 108 selfloop transitions, 39 changer transitions 0/149 dead transitions. [2024-06-20 16:23:14,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 149 transitions, 1493 flow [2024-06-20 16:23:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-20 16:23:14,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-20 16:23:14,061 INFO L175 Difference]: Start difference. First operand has 138 places, 127 transitions, 1050 flow. Second operand 9 states and 116 transitions. [2024-06-20 16:23:14,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 149 transitions, 1493 flow [2024-06-20 16:23:14,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 149 transitions, 1416 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:14,109 INFO L231 Difference]: Finished difference. Result has 141 places, 128 transitions, 1064 flow [2024-06-20 16:23:14,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1064, PETRI_PLACES=141, PETRI_TRANSITIONS=128} [2024-06-20 16:23:14,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-20 16:23:14,109 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 128 transitions, 1064 flow [2024-06-20 16:23:14,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:14,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:14,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:14,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 16:23:14,110 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)] === [2024-06-20 16:23:14,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -994399332, now seen corresponding path program 5 times [2024-06-20 16:23:14,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:14,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979687237] [2024-06-20 16:23:14,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:14,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:14,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:14,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979687237] [2024-06-20 16:23:14,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979687237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:14,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:14,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:14,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360278161] [2024-06-20 16:23:14,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:14,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:14,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:14,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:14,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:14,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:14,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 128 transitions, 1064 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:14,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:14,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:14,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:15,247 INFO L124 PetriNetUnfolderBase]: 370/655 cut-off events. [2024-06-20 16:23:15,248 INFO L125 PetriNetUnfolderBase]: For 30178/30178 co-relation queries the response was YES. [2024-06-20 16:23:15,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3837 conditions, 655 events. 370/655 cut-off events. For 30178/30178 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2817 event pairs, 45 based on Foata normal form. 3/656 useless extension candidates. Maximal degree in co-relation 3770. Up to 384 conditions per place. [2024-06-20 16:23:15,252 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 92 selfloop transitions, 68 changer transitions 0/162 dead transitions. [2024-06-20 16:23:15,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 162 transitions, 1612 flow [2024-06-20 16:23:15,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:23:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:23:15,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-20 16:23:15,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-20 16:23:15,261 INFO L175 Difference]: Start difference. First operand has 141 places, 128 transitions, 1064 flow. Second operand 11 states and 147 transitions. [2024-06-20 16:23:15,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 162 transitions, 1612 flow [2024-06-20 16:23:15,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 162 transitions, 1523 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:15,324 INFO L231 Difference]: Finished difference. Result has 145 places, 134 transitions, 1191 flow [2024-06-20 16:23:15,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1191, PETRI_PLACES=145, PETRI_TRANSITIONS=134} [2024-06-20 16:23:15,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-20 16:23:15,325 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 134 transitions, 1191 flow [2024-06-20 16:23:15,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:15,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:15,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:15,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 16:23:15,326 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)] === [2024-06-20 16:23:15,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:15,329 INFO L85 PathProgramCache]: Analyzing trace with hash -286638983, now seen corresponding path program 5 times [2024-06-20 16:23:15,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:15,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846569825] [2024-06-20 16:23:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:15,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:16,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:16,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846569825] [2024-06-20 16:23:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846569825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:16,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:16,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:16,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312476314] [2024-06-20 16:23:16,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:16,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:16,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 134 transitions, 1191 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:16,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:16,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:16,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:16,614 INFO L124 PetriNetUnfolderBase]: 374/663 cut-off events. [2024-06-20 16:23:16,614 INFO L125 PetriNetUnfolderBase]: For 30643/30643 co-relation queries the response was YES. [2024-06-20 16:23:16,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 663 events. 374/663 cut-off events. For 30643/30643 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2851 event pairs, 61 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 3924. Up to 562 conditions per place. [2024-06-20 16:23:16,619 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2024-06-20 16:23:16,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 155 transitions, 1554 flow [2024-06-20 16:23:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:23:16,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:23:16,620 INFO L175 Difference]: Start difference. First operand has 145 places, 134 transitions, 1191 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:23:16,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 155 transitions, 1554 flow [2024-06-20 16:23:16,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 155 transitions, 1444 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:16,679 INFO L231 Difference]: Finished difference. Result has 148 places, 135 transitions, 1173 flow [2024-06-20 16:23:16,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1173, PETRI_PLACES=148, PETRI_TRANSITIONS=135} [2024-06-20 16:23:16,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-20 16:23:16,680 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 135 transitions, 1173 flow [2024-06-20 16:23:16,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:16,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:16,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:16,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 16:23:16,686 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)] === [2024-06-20 16:23:16,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:16,687 INFO L85 PathProgramCache]: Analyzing trace with hash -988685412, now seen corresponding path program 6 times [2024-06-20 16:23:16,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:16,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986991086] [2024-06-20 16:23:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:17,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:17,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986991086] [2024-06-20 16:23:17,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986991086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:17,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:17,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:17,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104298981] [2024-06-20 16:23:17,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:17,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:17,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:17,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:17,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:17,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 135 transitions, 1173 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:17,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:17,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:17,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:17,776 INFO L124 PetriNetUnfolderBase]: 377/668 cut-off events. [2024-06-20 16:23:17,776 INFO L125 PetriNetUnfolderBase]: For 30630/30630 co-relation queries the response was YES. [2024-06-20 16:23:17,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 668 events. 377/668 cut-off events. For 30630/30630 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2904 event pairs, 54 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 3986. Up to 558 conditions per place. [2024-06-20 16:23:17,780 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 35 changer transitions 0/154 dead transitions. [2024-06-20 16:23:17,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 1566 flow [2024-06-20 16:23:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-20 16:23:17,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:23:17,783 INFO L175 Difference]: Start difference. First operand has 148 places, 135 transitions, 1173 flow. Second operand 9 states and 108 transitions. [2024-06-20 16:23:17,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 154 transitions, 1566 flow [2024-06-20 16:23:17,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 154 transitions, 1487 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:17,844 INFO L231 Difference]: Finished difference. Result has 150 places, 140 transitions, 1233 flow [2024-06-20 16:23:17,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1233, PETRI_PLACES=150, PETRI_TRANSITIONS=140} [2024-06-20 16:23:17,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-20 16:23:17,844 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 140 transitions, 1233 flow [2024-06-20 16:23:17,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:17,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:17,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:17,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 16:23:17,845 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)] === [2024-06-20 16:23:17,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash -988892957, now seen corresponding path program 6 times [2024-06-20 16:23:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:17,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865997978] [2024-06-20 16:23:17,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:17,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865997978] [2024-06-20 16:23:18,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865997978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:18,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:18,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676075632] [2024-06-20 16:23:18,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:18,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:18,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:18,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:18,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:18,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 140 transitions, 1233 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:18,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:18,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:18,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:19,031 INFO L124 PetriNetUnfolderBase]: 381/676 cut-off events. [2024-06-20 16:23:19,031 INFO L125 PetriNetUnfolderBase]: For 33144/33144 co-relation queries the response was YES. [2024-06-20 16:23:19,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4141 conditions, 676 events. 381/676 cut-off events. For 33144/33144 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2932 event pairs, 61 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 4069. Up to 598 conditions per place. [2024-06-20 16:23:19,036 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 126 selfloop transitions, 26 changer transitions 0/154 dead transitions. [2024-06-20 16:23:19,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 154 transitions, 1578 flow [2024-06-20 16:23:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-20 16:23:19,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-20 16:23:19,037 INFO L175 Difference]: Start difference. First operand has 150 places, 140 transitions, 1233 flow. Second operand 9 states and 105 transitions. [2024-06-20 16:23:19,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 154 transitions, 1578 flow [2024-06-20 16:23:19,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 154 transitions, 1522 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-20 16:23:19,106 INFO L231 Difference]: Finished difference. Result has 155 places, 141 transitions, 1246 flow [2024-06-20 16:23:19,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1246, PETRI_PLACES=155, PETRI_TRANSITIONS=141} [2024-06-20 16:23:19,107 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-20 16:23:19,107 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 141 transitions, 1246 flow [2024-06-20 16:23:19,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:19,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:19,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:19,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 16:23:19,108 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)] === [2024-06-20 16:23:19,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:19,108 INFO L85 PathProgramCache]: Analyzing trace with hash -281126718, now seen corresponding path program 7 times [2024-06-20 16:23:19,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:19,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260296350] [2024-06-20 16:23:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:19,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:19,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:19,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:19,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260296350] [2024-06-20 16:23:19,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260296350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:19,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:19,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281977643] [2024-06-20 16:23:19,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:19,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:19,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:19,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:19,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:19,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:19,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 141 transitions, 1246 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:19,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:19,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:19,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:20,189 INFO L124 PetriNetUnfolderBase]: 390/691 cut-off events. [2024-06-20 16:23:20,189 INFO L125 PetriNetUnfolderBase]: For 35915/35915 co-relation queries the response was YES. [2024-06-20 16:23:20,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 691 events. 390/691 cut-off events. For 35915/35915 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3036 event pairs, 54 based on Foata normal form. 3/692 useless extension candidates. Maximal degree in co-relation 4171. Up to 491 conditions per place. [2024-06-20 16:23:20,193 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 51 changer transitions 0/163 dead transitions. [2024-06-20 16:23:20,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 163 transitions, 1669 flow [2024-06-20 16:23:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-20 16:23:20,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-20 16:23:20,196 INFO L175 Difference]: Start difference. First operand has 155 places, 141 transitions, 1246 flow. Second operand 9 states and 119 transitions. [2024-06-20 16:23:20,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 163 transitions, 1669 flow [2024-06-20 16:23:20,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 163 transitions, 1611 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:20,250 INFO L231 Difference]: Finished difference. Result has 157 places, 145 transitions, 1362 flow [2024-06-20 16:23:20,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1362, PETRI_PLACES=157, PETRI_TRANSITIONS=145} [2024-06-20 16:23:20,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-20 16:23:20,250 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 145 transitions, 1362 flow [2024-06-20 16:23:20,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:20,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:20,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:20,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 16:23:20,251 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)] === [2024-06-20 16:23:20,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1726756486, now seen corresponding path program 8 times [2024-06-20 16:23:20,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:20,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817401185] [2024-06-20 16:23:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:20,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:20,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:20,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817401185] [2024-06-20 16:23:20,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817401185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:20,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:20,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:20,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66835156] [2024-06-20 16:23:20,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:20,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:20,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:20,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:20,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:20,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:20,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 145 transitions, 1362 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:20,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:20,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:20,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:21,152 INFO L124 PetriNetUnfolderBase]: 393/696 cut-off events. [2024-06-20 16:23:21,152 INFO L125 PetriNetUnfolderBase]: For 34966/34966 co-relation queries the response was YES. [2024-06-20 16:23:21,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 696 events. 393/696 cut-off events. For 34966/34966 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3068 event pairs, 54 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 4319. Up to 577 conditions per place. [2024-06-20 16:23:21,156 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 120 selfloop transitions, 40 changer transitions 0/162 dead transitions. [2024-06-20 16:23:21,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 1769 flow [2024-06-20 16:23:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-20 16:23:21,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-20 16:23:21,159 INFO L175 Difference]: Start difference. First operand has 157 places, 145 transitions, 1362 flow. Second operand 9 states and 110 transitions. [2024-06-20 16:23:21,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 1769 flow [2024-06-20 16:23:21,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 162 transitions, 1639 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:21,223 INFO L231 Difference]: Finished difference. Result has 159 places, 148 transitions, 1366 flow [2024-06-20 16:23:21,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1366, PETRI_PLACES=159, PETRI_TRANSITIONS=148} [2024-06-20 16:23:21,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 129 predicate places. [2024-06-20 16:23:21,224 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 148 transitions, 1366 flow [2024-06-20 16:23:21,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:21,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:21,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:21,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 16:23:21,224 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)] === [2024-06-20 16:23:21,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1920259521, now seen corresponding path program 1 times [2024-06-20 16:23:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:21,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442450753] [2024-06-20 16:23:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:21,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:21,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:21,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442450753] [2024-06-20 16:23:21,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442450753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:21,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:21,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:21,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093429023] [2024-06-20 16:23:21,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:21,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:21,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:21,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:21,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:22,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:22,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 148 transitions, 1366 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:22,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:22,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:22,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:22,236 INFO L124 PetriNetUnfolderBase]: 389/690 cut-off events. [2024-06-20 16:23:22,237 INFO L125 PetriNetUnfolderBase]: For 34786/34786 co-relation queries the response was YES. [2024-06-20 16:23:22,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 690 events. 389/690 cut-off events. For 34786/34786 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3025 event pairs, 57 based on Foata normal form. 2/690 useless extension candidates. Maximal degree in co-relation 4165. Up to 651 conditions per place. [2024-06-20 16:23:22,241 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 145 selfloop transitions, 15 changer transitions 0/162 dead transitions. [2024-06-20 16:23:22,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 1728 flow [2024-06-20 16:23:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-20 16:23:22,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-20 16:23:22,242 INFO L175 Difference]: Start difference. First operand has 159 places, 148 transitions, 1366 flow. Second operand 9 states and 100 transitions. [2024-06-20 16:23:22,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 1728 flow [2024-06-20 16:23:22,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 162 transitions, 1656 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-20 16:23:22,311 INFO L231 Difference]: Finished difference. Result has 164 places, 150 transitions, 1349 flow [2024-06-20 16:23:22,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1349, PETRI_PLACES=164, PETRI_TRANSITIONS=150} [2024-06-20 16:23:22,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-20 16:23:22,312 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 150 transitions, 1349 flow [2024-06-20 16:23:22,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:22,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:22,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:22,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 16:23:22,313 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)] === [2024-06-20 16:23:22,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1654352774, now seen corresponding path program 9 times [2024-06-20 16:23:22,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:22,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991032854] [2024-06-20 16:23:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:22,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:23,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:23,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991032854] [2024-06-20 16:23:23,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991032854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:23,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:23,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:23,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83467302] [2024-06-20 16:23:23,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:23,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:23,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:23,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:23,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:23,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:23,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 150 transitions, 1349 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:23,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:23,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:23,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:23,281 INFO L124 PetriNetUnfolderBase]: 398/705 cut-off events. [2024-06-20 16:23:23,281 INFO L125 PetriNetUnfolderBase]: For 37330/37330 co-relation queries the response was YES. [2024-06-20 16:23:23,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4322 conditions, 705 events. 398/705 cut-off events. For 37330/37330 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3104 event pairs, 53 based on Foata normal form. 3/706 useless extension candidates. Maximal degree in co-relation 4246. Up to 618 conditions per place. [2024-06-20 16:23:23,285 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 139 selfloop transitions, 28 changer transitions 0/169 dead transitions. [2024-06-20 16:23:23,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 169 transitions, 1791 flow [2024-06-20 16:23:23,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:23,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-20 16:23:23,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:23:23,287 INFO L175 Difference]: Start difference. First operand has 164 places, 150 transitions, 1349 flow. Second operand 9 states and 108 transitions. [2024-06-20 16:23:23,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 169 transitions, 1791 flow [2024-06-20 16:23:23,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 169 transitions, 1752 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:23,345 INFO L231 Difference]: Finished difference. Result has 166 places, 154 transitions, 1450 flow [2024-06-20 16:23:23,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1450, PETRI_PLACES=166, PETRI_TRANSITIONS=154} [2024-06-20 16:23:23,345 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-20 16:23:23,346 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 154 transitions, 1450 flow [2024-06-20 16:23:23,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:23,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:23,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:23,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 16:23:23,346 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)] === [2024-06-20 16:23:23,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1911055094, now seen corresponding path program 10 times [2024-06-20 16:23:23,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:23,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991517416] [2024-06-20 16:23:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:23,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:24,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:24,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991517416] [2024-06-20 16:23:24,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991517416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:24,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:24,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:24,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438604138] [2024-06-20 16:23:24,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:24,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:24,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:24,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:24,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:24,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:24,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 154 transitions, 1450 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:24,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:24,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:24,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:24,328 INFO L124 PetriNetUnfolderBase]: 407/720 cut-off events. [2024-06-20 16:23:24,328 INFO L125 PetriNetUnfolderBase]: For 39092/39092 co-relation queries the response was YES. [2024-06-20 16:23:24,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4509 conditions, 720 events. 407/720 cut-off events. For 39092/39092 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3181 event pairs, 59 based on Foata normal form. 3/721 useless extension candidates. Maximal degree in co-relation 4432. Up to 670 conditions per place. [2024-06-20 16:23:24,332 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 18 changer transitions 0/172 dead transitions. [2024-06-20 16:23:24,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 172 transitions, 1904 flow [2024-06-20 16:23:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:24,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 16:23:24,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-20 16:23:24,337 INFO L175 Difference]: Start difference. First operand has 166 places, 154 transitions, 1450 flow. Second operand 9 states and 103 transitions. [2024-06-20 16:23:24,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 172 transitions, 1904 flow [2024-06-20 16:23:24,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 172 transitions, 1808 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:24,399 INFO L231 Difference]: Finished difference. Result has 168 places, 158 transitions, 1482 flow [2024-06-20 16:23:24,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1482, PETRI_PLACES=168, PETRI_TRANSITIONS=158} [2024-06-20 16:23:24,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-20 16:23:24,400 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 158 transitions, 1482 flow [2024-06-20 16:23:24,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:24,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:24,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:24,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 16:23:24,401 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)] === [2024-06-20 16:23:24,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1654347194, now seen corresponding path program 11 times [2024-06-20 16:23:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843631910] [2024-06-20 16:23:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:25,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:25,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843631910] [2024-06-20 16:23:25,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843631910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:25,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:25,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:25,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066396997] [2024-06-20 16:23:25,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:25,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:25,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:25,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:25,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:25,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:25,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 158 transitions, 1482 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:25,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:25,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:25,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:25,441 INFO L124 PetriNetUnfolderBase]: 420/741 cut-off events. [2024-06-20 16:23:25,441 INFO L125 PetriNetUnfolderBase]: For 40685/40685 co-relation queries the response was YES. [2024-06-20 16:23:25,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 741 events. 420/741 cut-off events. For 40685/40685 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3306 event pairs, 53 based on Foata normal form. 1/740 useless extension candidates. Maximal degree in co-relation 4671. Up to 622 conditions per place. [2024-06-20 16:23:25,446 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 138 selfloop transitions, 40 changer transitions 0/180 dead transitions. [2024-06-20 16:23:25,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 180 transitions, 2078 flow [2024-06-20 16:23:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 16:23:25,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-20 16:23:25,447 INFO L175 Difference]: Start difference. First operand has 168 places, 158 transitions, 1482 flow. Second operand 10 states and 121 transitions. [2024-06-20 16:23:25,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 180 transitions, 2078 flow [2024-06-20 16:23:25,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 180 transitions, 1994 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:25,515 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 1592 flow [2024-06-20 16:23:25,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1592, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2024-06-20 16:23:25,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-20 16:23:25,516 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 1592 flow [2024-06-20 16:23:25,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:25,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:25,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:25,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 16:23:25,516 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)] === [2024-06-20 16:23:25,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1039124875, now seen corresponding path program 7 times [2024-06-20 16:23:25,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811918216] [2024-06-20 16:23:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:26,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:26,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811918216] [2024-06-20 16:23:26,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811918216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:26,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:26,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:26,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021894066] [2024-06-20 16:23:26,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:26,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:26,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:26,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:26,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 1592 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:26,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:26,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:26,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:26,616 INFO L124 PetriNetUnfolderBase]: 417/736 cut-off events. [2024-06-20 16:23:26,616 INFO L125 PetriNetUnfolderBase]: For 40540/40540 co-relation queries the response was YES. [2024-06-20 16:23:26,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4699 conditions, 736 events. 417/736 cut-off events. For 40540/40540 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3272 event pairs, 67 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4619. Up to 707 conditions per place. [2024-06-20 16:23:26,621 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 156 selfloop transitions, 14 changer transitions 0/172 dead transitions. [2024-06-20 16:23:26,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 172 transitions, 1954 flow [2024-06-20 16:23:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:26,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-20 16:23:26,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-20 16:23:26,622 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 1592 flow. Second operand 9 states and 97 transitions. [2024-06-20 16:23:26,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 172 transitions, 1954 flow [2024-06-20 16:23:26,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 172 transitions, 1858 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:26,697 INFO L231 Difference]: Finished difference. Result has 174 places, 162 transitions, 1528 flow [2024-06-20 16:23:26,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1528, PETRI_PLACES=174, PETRI_TRANSITIONS=162} [2024-06-20 16:23:26,698 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-20 16:23:26,698 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 162 transitions, 1528 flow [2024-06-20 16:23:26,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:26,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:26,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:26,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 16:23:26,699 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)] === [2024-06-20 16:23:26,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:26,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1038917330, now seen corresponding path program 12 times [2024-06-20 16:23:26,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:26,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992363134] [2024-06-20 16:23:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:26,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:27,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:27,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:27,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992363134] [2024-06-20 16:23:27,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992363134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:27,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:27,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:27,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193495588] [2024-06-20 16:23:27,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:27,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:27,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:27,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:27,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:27,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:27,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 162 transitions, 1528 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:27,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:27,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:27,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:27,711 INFO L124 PetriNetUnfolderBase]: 415/733 cut-off events. [2024-06-20 16:23:27,711 INFO L125 PetriNetUnfolderBase]: For 38325/38325 co-relation queries the response was YES. [2024-06-20 16:23:27,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4540 conditions, 733 events. 415/733 cut-off events. For 38325/38325 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3251 event pairs, 61 based on Foata normal form. 1/732 useless extension candidates. Maximal degree in co-relation 4459. Up to 692 conditions per place. [2024-06-20 16:23:27,715 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 20 changer transitions 0/175 dead transitions. [2024-06-20 16:23:27,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 175 transitions, 1920 flow [2024-06-20 16:23:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-20 16:23:27,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-20 16:23:27,717 INFO L175 Difference]: Start difference. First operand has 174 places, 162 transitions, 1528 flow. Second operand 9 states and 101 transitions. [2024-06-20 16:23:27,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 175 transitions, 1920 flow [2024-06-20 16:23:27,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 175 transitions, 1848 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 16:23:27,797 INFO L231 Difference]: Finished difference. Result has 175 places, 165 transitions, 1527 flow [2024-06-20 16:23:27,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1527, PETRI_PLACES=175, PETRI_TRANSITIONS=165} [2024-06-20 16:23:27,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-20 16:23:27,798 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 165 transitions, 1527 flow [2024-06-20 16:23:27,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:27,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:27,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:27,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 16:23:27,799 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)] === [2024-06-20 16:23:27,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2127775880, now seen corresponding path program 1 times [2024-06-20 16:23:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325788514] [2024-06-20 16:23:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:27,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:28,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:28,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325788514] [2024-06-20 16:23:28,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325788514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:28,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:28,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992106898] [2024-06-20 16:23:28,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:28,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:28,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:28,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:28,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:28,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:28,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 165 transitions, 1527 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:28,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:28,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:28,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:29,017 INFO L124 PetriNetUnfolderBase]: 448/800 cut-off events. [2024-06-20 16:23:29,017 INFO L125 PetriNetUnfolderBase]: For 57797/57797 co-relation queries the response was YES. [2024-06-20 16:23:29,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 800 events. 448/800 cut-off events. For 57797/57797 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3621 event pairs, 42 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 5242. Up to 248 conditions per place. [2024-06-20 16:23:29,022 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 90 changer transitions 0/194 dead transitions. [2024-06-20 16:23:29,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 194 transitions, 2231 flow [2024-06-20 16:23:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-20 16:23:29,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:23:29,023 INFO L175 Difference]: Start difference. First operand has 175 places, 165 transitions, 1527 flow. Second operand 10 states and 130 transitions. [2024-06-20 16:23:29,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 194 transitions, 2231 flow [2024-06-20 16:23:29,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 194 transitions, 2130 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:29,146 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 1614 flow [2024-06-20 16:23:29,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1614, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2024-06-20 16:23:29,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-20 16:23:29,147 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 1614 flow [2024-06-20 16:23:29,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:29,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:29,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:29,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 16:23:29,148 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)] === [2024-06-20 16:23:29,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1720249156, now seen corresponding path program 2 times [2024-06-20 16:23:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:29,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457948763] [2024-06-20 16:23:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:29,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:29,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:29,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457948763] [2024-06-20 16:23:29,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457948763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:29,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:29,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:29,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758931827] [2024-06-20 16:23:29,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:29,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:29,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:29,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:29,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 1614 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:29,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:29,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:29,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:30,146 INFO L124 PetriNetUnfolderBase]: 452/808 cut-off events. [2024-06-20 16:23:30,146 INFO L125 PetriNetUnfolderBase]: For 59829/59829 co-relation queries the response was YES. [2024-06-20 16:23:30,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5487 conditions, 808 events. 452/808 cut-off events. For 59829/59829 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3691 event pairs, 80 based on Foata normal form. 2/808 useless extension candidates. Maximal degree in co-relation 5404. Up to 616 conditions per place. [2024-06-20 16:23:30,151 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 118 selfloop transitions, 65 changer transitions 0/185 dead transitions. [2024-06-20 16:23:30,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 185 transitions, 2033 flow [2024-06-20 16:23:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:30,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 16:23:30,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-20 16:23:30,153 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 1614 flow. Second operand 10 states and 121 transitions. [2024-06-20 16:23:30,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 185 transitions, 2033 flow [2024-06-20 16:23:30,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 185 transitions, 1890 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:30,262 INFO L231 Difference]: Finished difference. Result has 182 places, 167 transitions, 1613 flow [2024-06-20 16:23:30,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1613, PETRI_PLACES=182, PETRI_TRANSITIONS=167} [2024-06-20 16:23:30,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-20 16:23:30,263 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 167 transitions, 1613 flow [2024-06-20 16:23:30,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:30,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:30,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:30,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 16:23:30,264 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)] === [2024-06-20 16:23:30,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 467524624, now seen corresponding path program 3 times [2024-06-20 16:23:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:30,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983170533] [2024-06-20 16:23:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:30,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983170533] [2024-06-20 16:23:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983170533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:31,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:31,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783099711] [2024-06-20 16:23:31,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:31,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:31,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:31,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 167 transitions, 1613 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:31,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:31,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:31,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:31,452 INFO L124 PetriNetUnfolderBase]: 471/845 cut-off events. [2024-06-20 16:23:31,452 INFO L125 PetriNetUnfolderBase]: For 65231/65231 co-relation queries the response was YES. [2024-06-20 16:23:31,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 845 events. 471/845 cut-off events. For 65231/65231 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3950 event pairs, 67 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 5673. Up to 470 conditions per place. [2024-06-20 16:23:31,457 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 91 changer transitions 0/194 dead transitions. [2024-06-20 16:23:31,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 194 transitions, 2309 flow [2024-06-20 16:23:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:31,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 16:23:31,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-20 16:23:31,459 INFO L175 Difference]: Start difference. First operand has 182 places, 167 transitions, 1613 flow. Second operand 10 states and 131 transitions. [2024-06-20 16:23:31,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 194 transitions, 2309 flow [2024-06-20 16:23:31,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 194 transitions, 2179 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:31,583 INFO L231 Difference]: Finished difference. Result has 185 places, 170 transitions, 1692 flow [2024-06-20 16:23:31,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1692, PETRI_PLACES=185, PETRI_TRANSITIONS=170} [2024-06-20 16:23:31,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-20 16:23:31,583 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 170 transitions, 1692 flow [2024-06-20 16:23:31,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:31,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:31,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:31,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 16:23:31,584 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)] === [2024-06-20 16:23:31,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:31,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1720244506, now seen corresponding path program 4 times [2024-06-20 16:23:31,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:31,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808221065] [2024-06-20 16:23:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:31,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:32,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:32,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808221065] [2024-06-20 16:23:32,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808221065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:32,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:32,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:32,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269140096] [2024-06-20 16:23:32,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:32,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:32,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:32,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:32,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 170 transitions, 1692 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:32,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:32,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:32,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:32,556 INFO L124 PetriNetUnfolderBase]: 468/840 cut-off events. [2024-06-20 16:23:32,557 INFO L125 PetriNetUnfolderBase]: For 63895/63895 co-relation queries the response was YES. [2024-06-20 16:23:32,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5761 conditions, 840 events. 468/840 cut-off events. For 63895/63895 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3917 event pairs, 82 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 5675. Up to 634 conditions per place. [2024-06-20 16:23:32,562 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 122 selfloop transitions, 66 changer transitions 0/190 dead transitions. [2024-06-20 16:23:32,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 190 transitions, 2120 flow [2024-06-20 16:23:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:32,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:23:32,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:23:32,563 INFO L175 Difference]: Start difference. First operand has 185 places, 170 transitions, 1692 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:23:32,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 190 transitions, 2120 flow [2024-06-20 16:23:32,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 190 transitions, 2002 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:32,685 INFO L231 Difference]: Finished difference. Result has 191 places, 171 transitions, 1719 flow [2024-06-20 16:23:32,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1719, PETRI_PLACES=191, PETRI_TRANSITIONS=171} [2024-06-20 16:23:32,685 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-20 16:23:32,686 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 171 transitions, 1719 flow [2024-06-20 16:23:32,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:32,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:32,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:32,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 16:23:32,686 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)] === [2024-06-20 16:23:32,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:32,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2108978810, now seen corresponding path program 1 times [2024-06-20 16:23:32,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:32,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124884499] [2024-06-20 16:23:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:32,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:33,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124884499] [2024-06-20 16:23:33,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124884499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:33,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395302361] [2024-06-20 16:23:33,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:33,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:33,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:33,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:33,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 171 transitions, 1719 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:33,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:33,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:33,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:34,214 INFO L124 PetriNetUnfolderBase]: 484/866 cut-off events. [2024-06-20 16:23:34,215 INFO L125 PetriNetUnfolderBase]: For 69817/69817 co-relation queries the response was YES. [2024-06-20 16:23:34,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6139 conditions, 866 events. 484/866 cut-off events. For 69817/69817 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4060 event pairs, 72 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 6050. Up to 501 conditions per place. [2024-06-20 16:23:34,221 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 103 selfloop transitions, 96 changer transitions 0/201 dead transitions. [2024-06-20 16:23:34,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 201 transitions, 2351 flow [2024-06-20 16:23:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-20 16:23:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-20 16:23:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 170 transitions. [2024-06-20 16:23:34,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-20 16:23:34,222 INFO L175 Difference]: Start difference. First operand has 191 places, 171 transitions, 1719 flow. Second operand 14 states and 170 transitions. [2024-06-20 16:23:34,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 201 transitions, 2351 flow [2024-06-20 16:23:34,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 201 transitions, 2217 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:34,360 INFO L231 Difference]: Finished difference. Result has 197 places, 175 transitions, 1841 flow [2024-06-20 16:23:34,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1841, PETRI_PLACES=197, PETRI_TRANSITIONS=175} [2024-06-20 16:23:34,361 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-20 16:23:34,361 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 175 transitions, 1841 flow [2024-06-20 16:23:34,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:34,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:34,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:34,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 16:23:34,361 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)] === [2024-06-20 16:23:34,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:34,362 INFO L85 PathProgramCache]: Analyzing trace with hash 583108744, now seen corresponding path program 5 times [2024-06-20 16:23:34,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:34,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409078269] [2024-06-20 16:23:34,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:34,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:35,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:35,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409078269] [2024-06-20 16:23:35,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409078269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:35,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:35,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:35,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209608952] [2024-06-20 16:23:35,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:35,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:35,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:35,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:35,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:35,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:35,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 175 transitions, 1841 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:35,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:35,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:35,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:35,711 INFO L124 PetriNetUnfolderBase]: 520/946 cut-off events. [2024-06-20 16:23:35,711 INFO L125 PetriNetUnfolderBase]: For 111803/111803 co-relation queries the response was YES. [2024-06-20 16:23:35,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6588 conditions, 946 events. 520/946 cut-off events. For 111803/111803 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4616 event pairs, 86 based on Foata normal form. 22/966 useless extension candidates. Maximal degree in co-relation 6498. Up to 662 conditions per place. [2024-06-20 16:23:35,718 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 141 selfloop transitions, 48 changer transitions 8/199 dead transitions. [2024-06-20 16:23:35,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 199 transitions, 2336 flow [2024-06-20 16:23:35,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-20 16:23:35,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:23:35,719 INFO L175 Difference]: Start difference. First operand has 197 places, 175 transitions, 1841 flow. Second operand 10 states and 130 transitions. [2024-06-20 16:23:35,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 199 transitions, 2336 flow [2024-06-20 16:23:35,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 199 transitions, 2194 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-20 16:23:35,861 INFO L231 Difference]: Finished difference. Result has 196 places, 174 transitions, 1802 flow [2024-06-20 16:23:35,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1802, PETRI_PLACES=196, PETRI_TRANSITIONS=174} [2024-06-20 16:23:35,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-20 16:23:35,861 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 174 transitions, 1802 flow [2024-06-20 16:23:35,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:35,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:35,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:35,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 16:23:35,862 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)] === [2024-06-20 16:23:35,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:35,862 INFO L85 PathProgramCache]: Analyzing trace with hash 582931114, now seen corresponding path program 6 times [2024-06-20 16:23:35,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:35,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331256087] [2024-06-20 16:23:35,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:35,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:36,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:36,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331256087] [2024-06-20 16:23:36,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331256087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:36,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:36,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:36,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584747041] [2024-06-20 16:23:36,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:36,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:36,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:36,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:36,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:36,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:36,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 174 transitions, 1802 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:36,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:36,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:36,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:37,157 INFO L124 PetriNetUnfolderBase]: 509/925 cut-off events. [2024-06-20 16:23:37,157 INFO L125 PetriNetUnfolderBase]: For 78831/78831 co-relation queries the response was YES. [2024-06-20 16:23:37,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6640 conditions, 925 events. 509/925 cut-off events. For 78831/78831 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4501 event pairs, 89 based on Foata normal form. 2/925 useless extension candidates. Maximal degree in co-relation 6549. Up to 780 conditions per place. [2024-06-20 16:23:37,165 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 42 changer transitions 0/194 dead transitions. [2024-06-20 16:23:37,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 194 transitions, 2384 flow [2024-06-20 16:23:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 16:23:37,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-20 16:23:37,167 INFO L175 Difference]: Start difference. First operand has 196 places, 174 transitions, 1802 flow. Second operand 10 states and 121 transitions. [2024-06-20 16:23:37,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 194 transitions, 2384 flow [2024-06-20 16:23:37,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 194 transitions, 2266 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-20 16:23:37,319 INFO L231 Difference]: Finished difference. Result has 198 places, 177 transitions, 1809 flow [2024-06-20 16:23:37,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1809, PETRI_PLACES=198, PETRI_TRANSITIONS=177} [2024-06-20 16:23:37,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-20 16:23:37,320 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 177 transitions, 1809 flow [2024-06-20 16:23:37,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:37,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:37,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:37,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 16:23:37,321 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)] === [2024-06-20 16:23:37,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash 582935764, now seen corresponding path program 7 times [2024-06-20 16:23:37,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:37,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050135961] [2024-06-20 16:23:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:37,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:38,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:38,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050135961] [2024-06-20 16:23:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050135961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:38,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:38,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:38,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859585808] [2024-06-20 16:23:38,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:38,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:38,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:38,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:38,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:38,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 177 transitions, 1809 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:38,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:38,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:38,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:38,422 INFO L124 PetriNetUnfolderBase]: 506/920 cut-off events. [2024-06-20 16:23:38,422 INFO L125 PetriNetUnfolderBase]: For 76985/76985 co-relation queries the response was YES. [2024-06-20 16:23:38,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6506 conditions, 920 events. 506/920 cut-off events. For 76985/76985 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4486 event pairs, 90 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 6413. Up to 798 conditions per place. [2024-06-20 16:23:38,429 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 40 changer transitions 0/192 dead transitions. [2024-06-20 16:23:38,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 192 transitions, 2228 flow [2024-06-20 16:23:38,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 16:23:38,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 16:23:38,430 INFO L175 Difference]: Start difference. First operand has 198 places, 177 transitions, 1809 flow. Second operand 10 states and 119 transitions. [2024-06-20 16:23:38,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 192 transitions, 2228 flow [2024-06-20 16:23:38,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 192 transitions, 2159 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:38,565 INFO L231 Difference]: Finished difference. Result has 202 places, 177 transitions, 1824 flow [2024-06-20 16:23:38,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1740, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1824, PETRI_PLACES=202, PETRI_TRANSITIONS=177} [2024-06-20 16:23:38,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-20 16:23:38,566 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 177 transitions, 1824 flow [2024-06-20 16:23:38,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:38,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:38,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:38,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 16:23:38,566 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)] === [2024-06-20 16:23:38,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:38,567 INFO L85 PathProgramCache]: Analyzing trace with hash 578467114, now seen corresponding path program 8 times [2024-06-20 16:23:38,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:38,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722523056] [2024-06-20 16:23:38,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:39,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722523056] [2024-06-20 16:23:39,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722523056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:39,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:39,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:39,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086963008] [2024-06-20 16:23:39,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:39,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:39,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:39,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:39,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 177 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:39,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:39,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:39,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:39,899 INFO L124 PetriNetUnfolderBase]: 510/928 cut-off events. [2024-06-20 16:23:39,899 INFO L125 PetriNetUnfolderBase]: For 78746/78746 co-relation queries the response was YES. [2024-06-20 16:23:39,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6613 conditions, 928 events. 510/928 cut-off events. For 78746/78746 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4552 event pairs, 89 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 6518. Up to 667 conditions per place. [2024-06-20 16:23:39,906 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 60 changer transitions 2/199 dead transitions. [2024-06-20 16:23:39,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 199 transitions, 2291 flow [2024-06-20 16:23:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:23:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:23:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-20 16:23:39,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:23:39,908 INFO L175 Difference]: Start difference. First operand has 202 places, 177 transitions, 1824 flow. Second operand 12 states and 144 transitions. [2024-06-20 16:23:39,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 199 transitions, 2291 flow [2024-06-20 16:23:40,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 199 transitions, 2204 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:40,055 INFO L231 Difference]: Finished difference. Result has 206 places, 178 transitions, 1882 flow [2024-06-20 16:23:40,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1737, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1882, PETRI_PLACES=206, PETRI_TRANSITIONS=178} [2024-06-20 16:23:40,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-20 16:23:40,056 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 178 transitions, 1882 flow [2024-06-20 16:23:40,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:40,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:40,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:40,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 16:23:40,057 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)] === [2024-06-20 16:23:40,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:40,057 INFO L85 PathProgramCache]: Analyzing trace with hash 112723320, now seen corresponding path program 9 times [2024-06-20 16:23:40,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:40,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121303024] [2024-06-20 16:23:40,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:40,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:40,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:40,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121303024] [2024-06-20 16:23:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121303024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:40,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:40,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:40,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187161564] [2024-06-20 16:23:40,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:40,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:40,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:40,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:40,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 178 transitions, 1882 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:40,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:40,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:40,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:41,376 INFO L124 PetriNetUnfolderBase]: 514/936 cut-off events. [2024-06-20 16:23:41,376 INFO L125 PetriNetUnfolderBase]: For 82255/82255 co-relation queries the response was YES. [2024-06-20 16:23:41,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6758 conditions, 936 events. 514/936 cut-off events. For 82255/82255 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4605 event pairs, 82 based on Foata normal form. 2/936 useless extension candidates. Maximal degree in co-relation 6662. Up to 647 conditions per place. [2024-06-20 16:23:41,382 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 61 changer transitions 2/200 dead transitions. [2024-06-20 16:23:41,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 200 transitions, 2353 flow [2024-06-20 16:23:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:23:41,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:23:41,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-20 16:23:41,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-20 16:23:41,384 INFO L175 Difference]: Start difference. First operand has 206 places, 178 transitions, 1882 flow. Second operand 11 states and 137 transitions. [2024-06-20 16:23:41,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 200 transitions, 2353 flow [2024-06-20 16:23:41,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 200 transitions, 2233 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:23:41,543 INFO L231 Difference]: Finished difference. Result has 206 places, 179 transitions, 1907 flow [2024-06-20 16:23:41,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1907, PETRI_PLACES=206, PETRI_TRANSITIONS=179} [2024-06-20 16:23:41,544 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-20 16:23:41,544 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 179 transitions, 1907 flow [2024-06-20 16:23:41,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:41,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:41,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:41,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 16:23:41,545 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)] === [2024-06-20 16:23:41,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash -541252118, now seen corresponding path program 10 times [2024-06-20 16:23:41,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:41,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369602838] [2024-06-20 16:23:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:41,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:41,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:42,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369602838] [2024-06-20 16:23:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369602838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:42,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:42,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474763991] [2024-06-20 16:23:42,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:42,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:42,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:42,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:42,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:42,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:42,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 179 transitions, 1907 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:42,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:42,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:42,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:42,659 INFO L124 PetriNetUnfolderBase]: 518/944 cut-off events. [2024-06-20 16:23:42,660 INFO L125 PetriNetUnfolderBase]: For 81082/81082 co-relation queries the response was YES. [2024-06-20 16:23:42,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6822 conditions, 944 events. 518/944 cut-off events. For 81082/81082 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4650 event pairs, 95 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 6726. Up to 751 conditions per place. [2024-06-20 16:23:42,667 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 49 changer transitions 0/197 dead transitions. [2024-06-20 16:23:42,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 197 transitions, 2357 flow [2024-06-20 16:23:42,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 16:23:42,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 16:23:42,669 INFO L175 Difference]: Start difference. First operand has 206 places, 179 transitions, 1907 flow. Second operand 10 states and 122 transitions. [2024-06-20 16:23:42,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 197 transitions, 2357 flow [2024-06-20 16:23:42,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 197 transitions, 2231 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-20 16:23:42,829 INFO L231 Difference]: Finished difference. Result has 206 places, 180 transitions, 1902 flow [2024-06-20 16:23:42,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1902, PETRI_PLACES=206, PETRI_TRANSITIONS=180} [2024-06-20 16:23:42,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-20 16:23:42,830 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 180 transitions, 1902 flow [2024-06-20 16:23:42,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:42,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:42,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:42,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 16:23:42,830 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)] === [2024-06-20 16:23:42,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:42,831 INFO L85 PathProgramCache]: Analyzing trace with hash 208268168, now seen corresponding path program 11 times [2024-06-20 16:23:42,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:42,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545278763] [2024-06-20 16:23:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:42,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545278763] [2024-06-20 16:23:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545278763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:43,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747933011] [2024-06-20 16:23:43,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:43,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:43,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 180 transitions, 1902 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:43,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:43,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:43,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:44,092 INFO L124 PetriNetUnfolderBase]: 544/998 cut-off events. [2024-06-20 16:23:44,094 INFO L125 PetriNetUnfolderBase]: For 99575/99575 co-relation queries the response was YES. [2024-06-20 16:23:44,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7501 conditions, 998 events. 544/998 cut-off events. For 99575/99575 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4983 event pairs, 74 based on Foata normal form. 2/998 useless extension candidates. Maximal degree in co-relation 7406. Up to 449 conditions per place. [2024-06-20 16:23:44,102 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 125 selfloop transitions, 89 changer transitions 0/216 dead transitions. [2024-06-20 16:23:44,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 216 transitions, 2745 flow [2024-06-20 16:23:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:44,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:44,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-20 16:23:44,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45806451612903226 [2024-06-20 16:23:44,104 INFO L175 Difference]: Start difference. First operand has 206 places, 180 transitions, 1902 flow. Second operand 10 states and 142 transitions. [2024-06-20 16:23:44,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 216 transitions, 2745 flow [2024-06-20 16:23:44,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 216 transitions, 2633 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:44,297 INFO L231 Difference]: Finished difference. Result has 208 places, 181 transitions, 1997 flow [2024-06-20 16:23:44,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1997, PETRI_PLACES=208, PETRI_TRANSITIONS=181} [2024-06-20 16:23:44,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-20 16:23:44,298 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 181 transitions, 1997 flow [2024-06-20 16:23:44,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:44,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:44,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:44,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 16:23:44,299 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)] === [2024-06-20 16:23:44,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:44,299 INFO L85 PathProgramCache]: Analyzing trace with hash -761612006, now seen corresponding path program 12 times [2024-06-20 16:23:44,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:44,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017119746] [2024-06-20 16:23:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:44,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:45,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:45,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017119746] [2024-06-20 16:23:45,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017119746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:45,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:45,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:45,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952816895] [2024-06-20 16:23:45,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:45,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:45,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:45,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:45,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 181 transitions, 1997 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:45,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:45,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:45,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:45,547 INFO L124 PetriNetUnfolderBase]: 606/1124 cut-off events. [2024-06-20 16:23:45,548 INFO L125 PetriNetUnfolderBase]: For 148740/148740 co-relation queries the response was YES. [2024-06-20 16:23:45,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9447 conditions, 1124 events. 606/1124 cut-off events. For 148740/148740 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5841 event pairs, 128 based on Foata normal form. 2/1124 useless extension candidates. Maximal degree in co-relation 9352. Up to 691 conditions per place. [2024-06-20 16:23:45,556 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 129 selfloop transitions, 89 changer transitions 0/220 dead transitions. [2024-06-20 16:23:45,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 220 transitions, 2873 flow [2024-06-20 16:23:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:23:45,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:23:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-20 16:23:45,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4574780058651026 [2024-06-20 16:23:45,558 INFO L175 Difference]: Start difference. First operand has 208 places, 181 transitions, 1997 flow. Second operand 11 states and 156 transitions. [2024-06-20 16:23:45,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 220 transitions, 2873 flow [2024-06-20 16:23:45,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 220 transitions, 2643 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:45,766 INFO L231 Difference]: Finished difference. Result has 211 places, 183 transitions, 1993 flow [2024-06-20 16:23:45,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1993, PETRI_PLACES=211, PETRI_TRANSITIONS=183} [2024-06-20 16:23:45,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-20 16:23:45,767 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 183 transitions, 1993 flow [2024-06-20 16:23:45,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:45,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:45,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:45,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 16:23:45,767 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)] === [2024-06-20 16:23:45,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash -761607356, now seen corresponding path program 13 times [2024-06-20 16:23:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:45,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936534299] [2024-06-20 16:23:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:45,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:46,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:46,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936534299] [2024-06-20 16:23:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936534299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:46,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:46,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679908674] [2024-06-20 16:23:46,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:46,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:46,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:46,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:46,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 183 transitions, 1993 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:46,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:46,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:46,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:47,111 INFO L124 PetriNetUnfolderBase]: 580/1078 cut-off events. [2024-06-20 16:23:47,111 INFO L125 PetriNetUnfolderBase]: For 147961/147961 co-relation queries the response was YES. [2024-06-20 16:23:47,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7863 conditions, 1078 events. 580/1078 cut-off events. For 147961/147961 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5586 event pairs, 112 based on Foata normal form. 20/1096 useless extension candidates. Maximal degree in co-relation 7768. Up to 705 conditions per place. [2024-06-20 16:23:47,119 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 119 selfloop transitions, 86 changer transitions 12/219 dead transitions. [2024-06-20 16:23:47,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 219 transitions, 2689 flow [2024-06-20 16:23:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:23:47,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:23:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-20 16:23:47,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327956989247312 [2024-06-20 16:23:47,120 INFO L175 Difference]: Start difference. First operand has 211 places, 183 transitions, 1993 flow. Second operand 12 states and 161 transitions. [2024-06-20 16:23:47,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 219 transitions, 2689 flow [2024-06-20 16:23:47,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 219 transitions, 2544 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:47,343 INFO L231 Difference]: Finished difference. Result has 216 places, 179 transitions, 1983 flow [2024-06-20 16:23:47,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1983, PETRI_PLACES=216, PETRI_TRANSITIONS=179} [2024-06-20 16:23:47,344 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-20 16:23:47,344 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 179 transitions, 1983 flow [2024-06-20 16:23:47,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:47,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:47,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:47,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 16:23:47,345 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)] === [2024-06-20 16:23:47,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:47,345 INFO L85 PathProgramCache]: Analyzing trace with hash -295868026, now seen corresponding path program 2 times [2024-06-20 16:23:47,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:47,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644417406] [2024-06-20 16:23:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:47,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:48,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:48,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644417406] [2024-06-20 16:23:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644417406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:48,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:48,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:48,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236357326] [2024-06-20 16:23:48,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:48,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:48,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:48,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 179 transitions, 1983 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:48,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:48,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:48,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:48,530 INFO L124 PetriNetUnfolderBase]: 549/1013 cut-off events. [2024-06-20 16:23:48,530 INFO L125 PetriNetUnfolderBase]: For 107593/107593 co-relation queries the response was YES. [2024-06-20 16:23:48,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1013 events. 549/1013 cut-off events. For 107593/107593 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5160 event pairs, 84 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 7677. Up to 663 conditions per place. [2024-06-20 16:23:48,538 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 123 selfloop transitions, 87 changer transitions 1/213 dead transitions. [2024-06-20 16:23:48,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 213 transitions, 2706 flow [2024-06-20 16:23:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-20 16:23:48,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-20 16:23:48,539 INFO L175 Difference]: Start difference. First operand has 216 places, 179 transitions, 1983 flow. Second operand 10 states and 137 transitions. [2024-06-20 16:23:48,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 213 transitions, 2706 flow [2024-06-20 16:23:48,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 213 transitions, 2525 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-20 16:23:48,727 INFO L231 Difference]: Finished difference. Result has 217 places, 185 transitions, 2113 flow [2024-06-20 16:23:48,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2113, PETRI_PLACES=217, PETRI_TRANSITIONS=185} [2024-06-20 16:23:48,728 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-20 16:23:48,728 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 185 transitions, 2113 flow [2024-06-20 16:23:48,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:48,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:48,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:48,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 16:23:48,729 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)] === [2024-06-20 16:23:48,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash -291226396, now seen corresponding path program 3 times [2024-06-20 16:23:48,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:48,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105583079] [2024-06-20 16:23:48,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:48,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:49,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:49,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105583079] [2024-06-20 16:23:49,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105583079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:49,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:49,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490089323] [2024-06-20 16:23:49,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:49,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:49,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:49,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:49,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 185 transitions, 2113 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:49,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:49,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:49,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:50,031 INFO L124 PetriNetUnfolderBase]: 558/1028 cut-off events. [2024-06-20 16:23:50,031 INFO L125 PetriNetUnfolderBase]: For 112670/112670 co-relation queries the response was YES. [2024-06-20 16:23:50,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8064 conditions, 1028 events. 558/1028 cut-off events. For 112670/112670 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5241 event pairs, 106 based on Foata normal form. 2/1028 useless extension candidates. Maximal degree in co-relation 7964. Up to 830 conditions per place. [2024-06-20 16:23:50,040 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 54 changer transitions 2/212 dead transitions. [2024-06-20 16:23:50,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 212 transitions, 2663 flow [2024-06-20 16:23:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:50,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 16:23:50,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-20 16:23:50,041 INFO L175 Difference]: Start difference. First operand has 217 places, 185 transitions, 2113 flow. Second operand 10 states and 127 transitions. [2024-06-20 16:23:50,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 212 transitions, 2663 flow [2024-06-20 16:23:50,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 212 transitions, 2514 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:50,263 INFO L231 Difference]: Finished difference. Result has 222 places, 189 transitions, 2148 flow [2024-06-20 16:23:50,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2148, PETRI_PLACES=222, PETRI_TRANSITIONS=189} [2024-06-20 16:23:50,264 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-20 16:23:50,264 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 189 transitions, 2148 flow [2024-06-20 16:23:50,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:50,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:50,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:50,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 16:23:50,264 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)] === [2024-06-20 16:23:50,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:50,265 INFO L85 PathProgramCache]: Analyzing trace with hash -757138520, now seen corresponding path program 4 times [2024-06-20 16:23:50,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:50,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208074419] [2024-06-20 16:23:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:50,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:51,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208074419] [2024-06-20 16:23:51,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208074419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:51,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:51,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004940331] [2024-06-20 16:23:51,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:51,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:51,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:51,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:51,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:51,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:51,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 189 transitions, 2148 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:51,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:51,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:51,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:51,740 INFO L124 PetriNetUnfolderBase]: 564/1038 cut-off events. [2024-06-20 16:23:51,740 INFO L125 PetriNetUnfolderBase]: For 115911/115911 co-relation queries the response was YES. [2024-06-20 16:23:51,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 1038 events. 564/1038 cut-off events. For 115911/115911 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5321 event pairs, 106 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 8006. Up to 828 conditions per place. [2024-06-20 16:23:51,748 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 58 changer transitions 2/215 dead transitions. [2024-06-20 16:23:51,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 215 transitions, 2682 flow [2024-06-20 16:23:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 16:23:51,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-20 16:23:51,749 INFO L175 Difference]: Start difference. First operand has 222 places, 189 transitions, 2148 flow. Second operand 10 states and 131 transitions. [2024-06-20 16:23:51,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 215 transitions, 2682 flow [2024-06-20 16:23:52,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 215 transitions, 2558 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:52,048 INFO L231 Difference]: Finished difference. Result has 225 places, 191 transitions, 2185 flow [2024-06-20 16:23:52,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2185, PETRI_PLACES=225, PETRI_TRANSITIONS=191} [2024-06-20 16:23:52,049 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-20 16:23:52,049 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 191 transitions, 2185 flow [2024-06-20 16:23:52,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:52,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:52,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:52,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 16:23:52,050 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)] === [2024-06-20 16:23:52,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:52,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1989847300, now seen corresponding path program 14 times [2024-06-20 16:23:52,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:52,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512756246] [2024-06-20 16:23:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:52,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:52,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:52,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512756246] [2024-06-20 16:23:52,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512756246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:52,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:52,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:52,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803221068] [2024-06-20 16:23:52,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:52,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:52,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:52,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:52,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:52,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:52,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 191 transitions, 2185 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:52,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:52,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:52,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:53,334 INFO L124 PetriNetUnfolderBase]: 626/1164 cut-off events. [2024-06-20 16:23:53,335 INFO L125 PetriNetUnfolderBase]: For 171952/171952 co-relation queries the response was YES. [2024-06-20 16:23:53,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10056 conditions, 1164 events. 626/1164 cut-off events. For 171952/171952 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6120 event pairs, 137 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 9953. Up to 793 conditions per place. [2024-06-20 16:23:53,344 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 57 changer transitions 0/219 dead transitions. [2024-06-20 16:23:53,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 219 transitions, 3033 flow [2024-06-20 16:23:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-20 16:23:53,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-20 16:23:53,356 INFO L175 Difference]: Start difference. First operand has 225 places, 191 transitions, 2185 flow. Second operand 10 states and 135 transitions. [2024-06-20 16:23:53,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 219 transitions, 3033 flow [2024-06-20 16:23:53,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 219 transitions, 2878 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-20 16:23:53,650 INFO L231 Difference]: Finished difference. Result has 225 places, 193 transitions, 2186 flow [2024-06-20 16:23:53,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2186, PETRI_PLACES=225, PETRI_TRANSITIONS=193} [2024-06-20 16:23:53,651 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-20 16:23:53,651 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 193 transitions, 2186 flow [2024-06-20 16:23:53,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:53,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:53,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:53,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 16:23:53,652 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)] === [2024-06-20 16:23:53,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash -125165782, now seen corresponding path program 15 times [2024-06-20 16:23:53,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:53,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111653080] [2024-06-20 16:23:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:53,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:54,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:54,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111653080] [2024-06-20 16:23:54,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111653080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:54,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:54,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:54,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555439160] [2024-06-20 16:23:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:54,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:54,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:54,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:54,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:54,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 193 transitions, 2186 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:54,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:54,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:54,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:54,874 INFO L124 PetriNetUnfolderBase]: 630/1172 cut-off events. [2024-06-20 16:23:54,874 INFO L125 PetriNetUnfolderBase]: For 175273/175273 co-relation queries the response was YES. [2024-06-20 16:23:54,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10125 conditions, 1172 events. 630/1172 cut-off events. For 175273/175273 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6215 event pairs, 157 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 10023. Up to 1047 conditions per place. [2024-06-20 16:23:54,883 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 164 selfloop transitions, 43 changer transitions 0/209 dead transitions. [2024-06-20 16:23:54,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 209 transitions, 2659 flow [2024-06-20 16:23:54,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 16:23:54,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 16:23:54,884 INFO L175 Difference]: Start difference. First operand has 225 places, 193 transitions, 2186 flow. Second operand 10 states and 119 transitions. [2024-06-20 16:23:54,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 209 transitions, 2659 flow [2024-06-20 16:23:55,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 209 transitions, 2523 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:55,193 INFO L231 Difference]: Finished difference. Result has 228 places, 194 transitions, 2162 flow [2024-06-20 16:23:55,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2162, PETRI_PLACES=228, PETRI_TRANSITIONS=194} [2024-06-20 16:23:55,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-20 16:23:55,197 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 194 transitions, 2162 flow [2024-06-20 16:23:55,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:55,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:55,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:55,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 16:23:55,198 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)] === [2024-06-20 16:23:55,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash -118499356, now seen corresponding path program 5 times [2024-06-20 16:23:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:55,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956394267] [2024-06-20 16:23:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:55,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:56,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:56,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956394267] [2024-06-20 16:23:56,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956394267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:56,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:56,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319722002] [2024-06-20 16:23:56,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:56,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:56,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:56,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:56,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:56,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:56,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 194 transitions, 2162 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:56,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:56,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:56,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:56,765 INFO L124 PetriNetUnfolderBase]: 642/1192 cut-off events. [2024-06-20 16:23:56,766 INFO L125 PetriNetUnfolderBase]: For 181207/181207 co-relation queries the response was YES. [2024-06-20 16:23:56,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10310 conditions, 1192 events. 642/1192 cut-off events. For 181207/181207 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6320 event pairs, 146 based on Foata normal form. 2/1192 useless extension candidates. Maximal degree in co-relation 10207. Up to 991 conditions per place. [2024-06-20 16:23:56,777 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 162 selfloop transitions, 51 changer transitions 0/215 dead transitions. [2024-06-20 16:23:56,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 215 transitions, 2697 flow [2024-06-20 16:23:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:23:56,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:23:56,778 INFO L175 Difference]: Start difference. First operand has 228 places, 194 transitions, 2162 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:23:56,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 215 transitions, 2697 flow [2024-06-20 16:23:57,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 215 transitions, 2601 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:57,046 INFO L231 Difference]: Finished difference. Result has 230 places, 198 transitions, 2248 flow [2024-06-20 16:23:57,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2248, PETRI_PLACES=230, PETRI_TRANSITIONS=198} [2024-06-20 16:23:57,046 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-20 16:23:57,046 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 198 transitions, 2248 flow [2024-06-20 16:23:57,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:57,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:57,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:57,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 16:23:57,047 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)] === [2024-06-20 16:23:57,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash -124992616, now seen corresponding path program 6 times [2024-06-20 16:23:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:57,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350125486] [2024-06-20 16:23:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:57,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:57,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:57,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350125486] [2024-06-20 16:23:57,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350125486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:57,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:57,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:57,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681359103] [2024-06-20 16:23:57,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:57,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:57,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:57,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:57,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 198 transitions, 2248 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:57,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:57,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:57,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:58,362 INFO L124 PetriNetUnfolderBase]: 648/1202 cut-off events. [2024-06-20 16:23:58,362 INFO L125 PetriNetUnfolderBase]: For 185071/185071 co-relation queries the response was YES. [2024-06-20 16:23:58,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10472 conditions, 1202 events. 648/1202 cut-off events. For 185071/185071 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6402 event pairs, 146 based on Foata normal form. 2/1202 useless extension candidates. Maximal degree in co-relation 10368. Up to 992 conditions per place. [2024-06-20 16:23:58,372 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 165 selfloop transitions, 52 changer transitions 0/219 dead transitions. [2024-06-20 16:23:58,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 219 transitions, 2764 flow [2024-06-20 16:23:58,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:58,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 16:23:58,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-20 16:23:58,373 INFO L175 Difference]: Start difference. First operand has 230 places, 198 transitions, 2248 flow. Second operand 10 states and 129 transitions. [2024-06-20 16:23:58,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 219 transitions, 2764 flow [2024-06-20 16:23:58,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 219 transitions, 2635 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:58,697 INFO L231 Difference]: Finished difference. Result has 233 places, 200 transitions, 2272 flow [2024-06-20 16:23:58,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2272, PETRI_PLACES=233, PETRI_TRANSITIONS=200} [2024-06-20 16:23:58,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-20 16:23:58,697 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 200 transitions, 2272 flow [2024-06-20 16:23:58,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:58,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:58,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:58,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 16:23:58,698 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)] === [2024-06-20 16:23:58,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:58,698 INFO L85 PathProgramCache]: Analyzing trace with hash -584475650, now seen corresponding path program 7 times [2024-06-20 16:23:58,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:58,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171787075] [2024-06-20 16:23:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:58,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:59,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:59,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171787075] [2024-06-20 16:23:59,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171787075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:59,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:59,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:59,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968209768] [2024-06-20 16:23:59,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:59,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:59,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:59,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:59,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:59,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 200 transitions, 2272 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:59,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:59,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:59,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:00,156 INFO L124 PetriNetUnfolderBase]: 654/1212 cut-off events. [2024-06-20 16:24:00,157 INFO L125 PetriNetUnfolderBase]: For 191293/191293 co-relation queries the response was YES. [2024-06-20 16:24:00,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10575 conditions, 1212 events. 654/1212 cut-off events. For 191293/191293 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6433 event pairs, 145 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 10471. Up to 991 conditions per place. [2024-06-20 16:24:00,168 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 164 selfloop transitions, 55 changer transitions 0/221 dead transitions. [2024-06-20 16:24:00,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 221 transitions, 2950 flow [2024-06-20 16:24:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:00,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 16:24:00,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-20 16:24:00,169 INFO L175 Difference]: Start difference. First operand has 233 places, 200 transitions, 2272 flow. Second operand 10 states and 127 transitions. [2024-06-20 16:24:00,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 221 transitions, 2950 flow [2024-06-20 16:24:00,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 221 transitions, 2821 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:00,507 INFO L231 Difference]: Finished difference. Result has 235 places, 202 transitions, 2306 flow [2024-06-20 16:24:00,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2306, PETRI_PLACES=235, PETRI_TRANSITIONS=202} [2024-06-20 16:24:00,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-20 16:24:00,508 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 202 transitions, 2306 flow [2024-06-20 16:24:00,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:00,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:00,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:00,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 16:24:00,509 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)] === [2024-06-20 16:24:00,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:00,509 INFO L85 PathProgramCache]: Analyzing trace with hash -590904740, now seen corresponding path program 8 times [2024-06-20 16:24:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268183456] [2024-06-20 16:24:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268183456] [2024-06-20 16:24:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268183456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:01,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:01,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:01,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309426038] [2024-06-20 16:24:01,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:01,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:01,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:01,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:01,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:01,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 202 transitions, 2306 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:01,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:01,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:01,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:02,224 INFO L124 PetriNetUnfolderBase]: 660/1222 cut-off events. [2024-06-20 16:24:02,224 INFO L125 PetriNetUnfolderBase]: For 196043/196043 co-relation queries the response was YES. [2024-06-20 16:24:02,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10712 conditions, 1222 events. 660/1222 cut-off events. For 196043/196043 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6506 event pairs, 143 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 10607. Up to 972 conditions per place. [2024-06-20 16:24:02,233 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 158 selfloop transitions, 63 changer transitions 0/223 dead transitions. [2024-06-20 16:24:02,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 223 transitions, 2994 flow [2024-06-20 16:24:02,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 16:24:02,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-20 16:24:02,234 INFO L175 Difference]: Start difference. First operand has 235 places, 202 transitions, 2306 flow. Second operand 10 states and 129 transitions. [2024-06-20 16:24:02,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 223 transitions, 2994 flow [2024-06-20 16:24:02,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 223 transitions, 2845 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:02,579 INFO L231 Difference]: Finished difference. Result has 237 places, 204 transitions, 2340 flow [2024-06-20 16:24:02,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2340, PETRI_PLACES=237, PETRI_TRANSITIONS=204} [2024-06-20 16:24:02,579 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-20 16:24:02,579 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 204 transitions, 2340 flow [2024-06-20 16:24:02,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:02,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:02,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:02,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 16:24:02,580 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)] === [2024-06-20 16:24:02,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash -584475836, now seen corresponding path program 16 times [2024-06-20 16:24:02,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:02,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29626419] [2024-06-20 16:24:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:03,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:03,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29626419] [2024-06-20 16:24:03,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29626419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:03,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:03,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392104081] [2024-06-20 16:24:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:03,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:03,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:03,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 204 transitions, 2340 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:03,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:03,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:03,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:03,746 INFO L124 PetriNetUnfolderBase]: 688/1288 cut-off events. [2024-06-20 16:24:03,746 INFO L125 PetriNetUnfolderBase]: For 255150/255150 co-relation queries the response was YES. [2024-06-20 16:24:03,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10799 conditions, 1288 events. 688/1288 cut-off events. For 255150/255150 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7049 event pairs, 155 based on Foata normal form. 22/1308 useless extension candidates. Maximal degree in co-relation 10693. Up to 990 conditions per place. [2024-06-20 16:24:03,756 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 164 selfloop transitions, 44 changer transitions 18/228 dead transitions. [2024-06-20 16:24:03,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 228 transitions, 2892 flow [2024-06-20 16:24:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:03,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-20 16:24:03,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-20 16:24:03,758 INFO L175 Difference]: Start difference. First operand has 237 places, 204 transitions, 2340 flow. Second operand 10 states and 131 transitions. [2024-06-20 16:24:03,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 228 transitions, 2892 flow [2024-06-20 16:24:04,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 228 transitions, 2709 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:04,123 INFO L231 Difference]: Finished difference. Result has 240 places, 194 transitions, 2148 flow [2024-06-20 16:24:04,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2148, PETRI_PLACES=240, PETRI_TRANSITIONS=194} [2024-06-20 16:24:04,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-20 16:24:04,123 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 194 transitions, 2148 flow [2024-06-20 16:24:04,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:04,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:04,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:04,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 16:24:04,124 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)] === [2024-06-20 16:24:04,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:04,125 INFO L85 PathProgramCache]: Analyzing trace with hash -124992802, now seen corresponding path program 17 times [2024-06-20 16:24:04,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:04,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202474462] [2024-06-20 16:24:04,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:04,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:04,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:04,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202474462] [2024-06-20 16:24:04,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202474462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:04,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:04,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962663906] [2024-06-20 16:24:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:04,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:05,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:05,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 194 transitions, 2148 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:05,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:05,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:05,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:05,331 INFO L124 PetriNetUnfolderBase]: 623/1169 cut-off events. [2024-06-20 16:24:05,331 INFO L125 PetriNetUnfolderBase]: For 197565/197565 co-relation queries the response was YES. [2024-06-20 16:24:05,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10083 conditions, 1169 events. 623/1169 cut-off events. For 197565/197565 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6236 event pairs, 148 based on Foata normal form. 2/1169 useless extension candidates. Maximal degree in co-relation 9975. Up to 1053 conditions per place. [2024-06-20 16:24:05,340 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 170 selfloop transitions, 37 changer transitions 0/209 dead transitions. [2024-06-20 16:24:05,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 209 transitions, 2601 flow [2024-06-20 16:24:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 16:24:05,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-20 16:24:05,341 INFO L175 Difference]: Start difference. First operand has 240 places, 194 transitions, 2148 flow. Second operand 10 states and 117 transitions. [2024-06-20 16:24:05,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 209 transitions, 2601 flow [2024-06-20 16:24:05,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 209 transitions, 2488 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-20 16:24:05,680 INFO L231 Difference]: Finished difference. Result has 236 places, 194 transitions, 2113 flow [2024-06-20 16:24:05,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2113, PETRI_PLACES=236, PETRI_TRANSITIONS=194} [2024-06-20 16:24:05,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-20 16:24:05,681 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 194 transitions, 2113 flow [2024-06-20 16:24:05,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:05,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:05,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:05,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 16:24:05,681 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)] === [2024-06-20 16:24:05,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash -217841374, now seen corresponding path program 1 times [2024-06-20 16:24:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:05,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483156673] [2024-06-20 16:24:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:06,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:06,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483156673] [2024-06-20 16:24:06,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483156673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:06,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:06,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947518582] [2024-06-20 16:24:06,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:06,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:06,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:06,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:06,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 194 transitions, 2113 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:06,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:06,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:06,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:07,405 INFO L124 PetriNetUnfolderBase]: 630/1182 cut-off events. [2024-06-20 16:24:07,405 INFO L125 PetriNetUnfolderBase]: For 192668/192668 co-relation queries the response was YES. [2024-06-20 16:24:07,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10034 conditions, 1182 events. 630/1182 cut-off events. For 192668/192668 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6326 event pairs, 138 based on Foata normal form. 2/1182 useless extension candidates. Maximal degree in co-relation 9927. Up to 1114 conditions per place. [2024-06-20 16:24:07,415 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 187 selfloop transitions, 25 changer transitions 1/215 dead transitions. [2024-06-20 16:24:07,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 215 transitions, 2631 flow [2024-06-20 16:24:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-20 16:24:07,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-20 16:24:07,416 INFO L175 Difference]: Start difference. First operand has 236 places, 194 transitions, 2113 flow. Second operand 10 states and 112 transitions. [2024-06-20 16:24:07,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 215 transitions, 2631 flow [2024-06-20 16:24:07,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 215 transitions, 2515 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:07,787 INFO L231 Difference]: Finished difference. Result has 239 places, 199 transitions, 2121 flow [2024-06-20 16:24:07,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2121, PETRI_PLACES=239, PETRI_TRANSITIONS=199} [2024-06-20 16:24:07,788 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-20 16:24:07,788 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 199 transitions, 2121 flow [2024-06-20 16:24:07,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:07,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:07,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:07,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 16:24:07,789 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)] === [2024-06-20 16:24:07,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:07,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1767062212, now seen corresponding path program 2 times [2024-06-20 16:24:07,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:07,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353484545] [2024-06-20 16:24:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:07,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:08,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:08,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:08,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353484545] [2024-06-20 16:24:08,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353484545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:08,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:08,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:08,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742547634] [2024-06-20 16:24:08,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:08,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:08,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:08,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:08,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:08,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 199 transitions, 2121 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:08,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:08,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:08,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:09,162 INFO L124 PetriNetUnfolderBase]: 632/1184 cut-off events. [2024-06-20 16:24:09,162 INFO L125 PetriNetUnfolderBase]: For 197328/197328 co-relation queries the response was YES. [2024-06-20 16:24:09,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10159 conditions, 1184 events. 632/1184 cut-off events. For 197328/197328 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6323 event pairs, 147 based on Foata normal form. 2/1184 useless extension candidates. Maximal degree in co-relation 10049. Up to 1144 conditions per place. [2024-06-20 16:24:09,172 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 192 selfloop transitions, 18 changer transitions 0/212 dead transitions. [2024-06-20 16:24:09,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 212 transitions, 2587 flow [2024-06-20 16:24:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-20 16:24:09,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-20 16:24:09,174 INFO L175 Difference]: Start difference. First operand has 239 places, 199 transitions, 2121 flow. Second operand 10 states and 107 transitions. [2024-06-20 16:24:09,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 212 transitions, 2587 flow [2024-06-20 16:24:09,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 212 transitions, 2498 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:09,528 INFO L231 Difference]: Finished difference. Result has 241 places, 200 transitions, 2093 flow [2024-06-20 16:24:09,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2093, PETRI_PLACES=241, PETRI_TRANSITIONS=200} [2024-06-20 16:24:09,529 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-20 16:24:09,529 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 200 transitions, 2093 flow [2024-06-20 16:24:09,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:09,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:09,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:09,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 16:24:09,530 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)] === [2024-06-20 16:24:09,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1479877654, now seen corresponding path program 9 times [2024-06-20 16:24:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:09,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612244940] [2024-06-20 16:24:09,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:10,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612244940] [2024-06-20 16:24:10,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612244940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:10,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:10,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742768389] [2024-06-20 16:24:10,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:10,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:10,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:10,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:10,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:10,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 200 transitions, 2093 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:10,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:10,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:10,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:10,623 INFO L124 PetriNetUnfolderBase]: 628/1178 cut-off events. [2024-06-20 16:24:10,623 INFO L125 PetriNetUnfolderBase]: For 195035/195035 co-relation queries the response was YES. [2024-06-20 16:24:10,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9964 conditions, 1178 events. 628/1178 cut-off events. For 195035/195035 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6300 event pairs, 143 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 9853. Up to 1128 conditions per place. [2024-06-20 16:24:10,634 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 20 changer transitions 0/213 dead transitions. [2024-06-20 16:24:10,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 213 transitions, 2549 flow [2024-06-20 16:24:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:10,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 16:24:10,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:24:10,635 INFO L175 Difference]: Start difference. First operand has 241 places, 200 transitions, 2093 flow. Second operand 10 states and 110 transitions. [2024-06-20 16:24:10,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 213 transitions, 2549 flow [2024-06-20 16:24:11,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 213 transitions, 2500 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:11,003 INFO L231 Difference]: Finished difference. Result has 243 places, 200 transitions, 2089 flow [2024-06-20 16:24:11,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2089, PETRI_PLACES=243, PETRI_TRANSITIONS=200} [2024-06-20 16:24:11,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-20 16:24:11,003 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 200 transitions, 2089 flow [2024-06-20 16:24:11,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:11,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:11,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:11,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 16:24:11,004 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)] === [2024-06-20 16:24:11,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -254670694, now seen corresponding path program 18 times [2024-06-20 16:24:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:11,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72094094] [2024-06-20 16:24:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:11,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:11,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:11,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72094094] [2024-06-20 16:24:11,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72094094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:11,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:11,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:11,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257252817] [2024-06-20 16:24:11,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:11,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:11,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:11,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:11,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:11,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:11,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 200 transitions, 2089 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:11,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:11,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:11,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:12,226 INFO L124 PetriNetUnfolderBase]: 632/1186 cut-off events. [2024-06-20 16:24:12,226 INFO L125 PetriNetUnfolderBase]: For 200203/200203 co-relation queries the response was YES. [2024-06-20 16:24:12,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10053 conditions, 1186 events. 632/1186 cut-off events. For 200203/200203 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6375 event pairs, 139 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 9941. Up to 1139 conditions per place. [2024-06-20 16:24:12,235 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 189 selfloop transitions, 24 changer transitions 0/215 dead transitions. [2024-06-20 16:24:12,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 215 transitions, 2581 flow [2024-06-20 16:24:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 16:24:12,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-20 16:24:12,236 INFO L175 Difference]: Start difference. First operand has 243 places, 200 transitions, 2089 flow. Second operand 10 states and 109 transitions. [2024-06-20 16:24:12,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 215 transitions, 2581 flow [2024-06-20 16:24:12,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 215 transitions, 2524 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:12,614 INFO L231 Difference]: Finished difference. Result has 246 places, 204 transitions, 2137 flow [2024-06-20 16:24:12,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2137, PETRI_PLACES=246, PETRI_TRANSITIONS=204} [2024-06-20 16:24:12,615 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-20 16:24:12,615 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 204 transitions, 2137 flow [2024-06-20 16:24:12,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:12,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:12,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:12,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 16:24:12,616 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)] === [2024-06-20 16:24:12,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1720712002, now seen corresponding path program 10 times [2024-06-20 16:24:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:12,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765421565] [2024-06-20 16:24:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:12,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:13,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:13,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765421565] [2024-06-20 16:24:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765421565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:13,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:13,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007549757] [2024-06-20 16:24:13,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:13,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:13,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:13,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:13,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:13,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 204 transitions, 2137 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:13,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:13,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:13,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:13,892 INFO L124 PetriNetUnfolderBase]: 638/1196 cut-off events. [2024-06-20 16:24:13,892 INFO L125 PetriNetUnfolderBase]: For 205513/205513 co-relation queries the response was YES. [2024-06-20 16:24:13,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10207 conditions, 1196 events. 638/1196 cut-off events. For 205513/205513 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6410 event pairs, 139 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 10093. Up to 1140 conditions per place. [2024-06-20 16:24:13,902 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 21 changer transitions 0/220 dead transitions. [2024-06-20 16:24:13,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 220 transitions, 2663 flow [2024-06-20 16:24:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:13,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 16:24:13,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-20 16:24:13,903 INFO L175 Difference]: Start difference. First operand has 246 places, 204 transitions, 2137 flow. Second operand 10 states and 113 transitions. [2024-06-20 16:24:13,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 220 transitions, 2663 flow [2024-06-20 16:24:14,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 220 transitions, 2623 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-20 16:24:14,356 INFO L231 Difference]: Finished difference. Result has 252 places, 206 transitions, 2200 flow [2024-06-20 16:24:14,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2200, PETRI_PLACES=252, PETRI_TRANSITIONS=206} [2024-06-20 16:24:14,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-20 16:24:14,357 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 206 transitions, 2200 flow [2024-06-20 16:24:14,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:14,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:14,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:14,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 16:24:14,358 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)] === [2024-06-20 16:24:14,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:14,358 INFO L85 PathProgramCache]: Analyzing trace with hash -26769544, now seen corresponding path program 19 times [2024-06-20 16:24:14,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:14,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756166679] [2024-06-20 16:24:14,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:14,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:15,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:15,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:15,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756166679] [2024-06-20 16:24:15,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756166679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:15,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:15,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:15,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401852407] [2024-06-20 16:24:15,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:15,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:15,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:15,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:15,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:15,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:15,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 206 transitions, 2200 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:15,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:15,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:15,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:15,573 INFO L124 PetriNetUnfolderBase]: 642/1204 cut-off events. [2024-06-20 16:24:15,574 INFO L125 PetriNetUnfolderBase]: For 210285/210285 co-relation queries the response was YES. [2024-06-20 16:24:15,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10315 conditions, 1204 events. 642/1204 cut-off events. For 210285/210285 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6487 event pairs, 149 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 10200. Up to 1172 conditions per place. [2024-06-20 16:24:15,585 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 200 selfloop transitions, 16 changer transitions 0/218 dead transitions. [2024-06-20 16:24:15,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 218 transitions, 2678 flow [2024-06-20 16:24:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-20 16:24:15,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-20 16:24:15,586 INFO L175 Difference]: Start difference. First operand has 252 places, 206 transitions, 2200 flow. Second operand 10 states and 106 transitions. [2024-06-20 16:24:15,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 218 transitions, 2678 flow [2024-06-20 16:24:16,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 218 transitions, 2599 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:16,014 INFO L231 Difference]: Finished difference. Result has 254 places, 207 transitions, 2181 flow [2024-06-20 16:24:16,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2181, PETRI_PLACES=254, PETRI_TRANSITIONS=207} [2024-06-20 16:24:16,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-20 16:24:16,015 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 207 transitions, 2181 flow [2024-06-20 16:24:16,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:16,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:16,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:16,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 16:24:16,016 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)] === [2024-06-20 16:24:16,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:16,016 INFO L85 PathProgramCache]: Analyzing trace with hash -591011712, now seen corresponding path program 3 times [2024-06-20 16:24:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:16,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144802049] [2024-06-20 16:24:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:16,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:16,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144802049] [2024-06-20 16:24:16,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144802049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:16,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:16,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:16,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463072228] [2024-06-20 16:24:16,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:16,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:16,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:16,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:17,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:17,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 207 transitions, 2181 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:17,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:17,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:17,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:17,423 INFO L124 PetriNetUnfolderBase]: 646/1212 cut-off events. [2024-06-20 16:24:17,424 INFO L125 PetriNetUnfolderBase]: For 214993/214993 co-relation queries the response was YES. [2024-06-20 16:24:17,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10360 conditions, 1212 events. 646/1212 cut-off events. For 214993/214993 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6551 event pairs, 144 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 10244. Up to 1175 conditions per place. [2024-06-20 16:24:17,436 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 203 selfloop transitions, 15 changer transitions 0/220 dead transitions. [2024-06-20 16:24:17,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 220 transitions, 2663 flow [2024-06-20 16:24:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:17,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-20 16:24:17,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 16:24:17,437 INFO L175 Difference]: Start difference. First operand has 254 places, 207 transitions, 2181 flow. Second operand 10 states and 105 transitions. [2024-06-20 16:24:17,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 220 transitions, 2663 flow [2024-06-20 16:24:17,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 220 transitions, 2607 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:17,867 INFO L231 Difference]: Finished difference. Result has 257 places, 208 transitions, 2181 flow [2024-06-20 16:24:17,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2181, PETRI_PLACES=257, PETRI_TRANSITIONS=208} [2024-06-20 16:24:17,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-20 16:24:17,868 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 208 transitions, 2181 flow [2024-06-20 16:24:17,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:17,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:17,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:17,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 16:24:17,869 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)] === [2024-06-20 16:24:17,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:17,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1471843012, now seen corresponding path program 4 times [2024-06-20 16:24:17,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:17,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248245164] [2024-06-20 16:24:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:17,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:18,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:18,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248245164] [2024-06-20 16:24:18,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248245164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:18,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:18,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:18,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983827105] [2024-06-20 16:24:18,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:18,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:18,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:18,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:18,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:18,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:18,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 208 transitions, 2181 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:18,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:18,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:18,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:19,352 INFO L124 PetriNetUnfolderBase]: 650/1220 cut-off events. [2024-06-20 16:24:19,353 INFO L125 PetriNetUnfolderBase]: For 218988/218988 co-relation queries the response was YES. [2024-06-20 16:24:19,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10445 conditions, 1220 events. 650/1220 cut-off events. For 218988/218988 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6614 event pairs, 145 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 10328. Up to 1179 conditions per place. [2024-06-20 16:24:19,363 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 202 selfloop transitions, 18 changer transitions 0/222 dead transitions. [2024-06-20 16:24:19,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 222 transitions, 2675 flow [2024-06-20 16:24:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:19,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 16:24:19,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-20 16:24:19,365 INFO L175 Difference]: Start difference. First operand has 257 places, 208 transitions, 2181 flow. Second operand 10 states and 109 transitions. [2024-06-20 16:24:19,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 222 transitions, 2675 flow [2024-06-20 16:24:19,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 222 transitions, 2629 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:19,777 INFO L231 Difference]: Finished difference. Result has 259 places, 209 transitions, 2199 flow [2024-06-20 16:24:19,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2135, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2199, PETRI_PLACES=259, PETRI_TRANSITIONS=209} [2024-06-20 16:24:19,778 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-20 16:24:19,778 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 209 transitions, 2199 flow [2024-06-20 16:24:19,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:19,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:19,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:19,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 16:24:19,779 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)] === [2024-06-20 16:24:19,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:19,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2110022226, now seen corresponding path program 11 times [2024-06-20 16:24:19,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:19,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332874664] [2024-06-20 16:24:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:19,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:20,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:20,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332874664] [2024-06-20 16:24:20,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332874664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:20,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:20,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:20,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971836084] [2024-06-20 16:24:20,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:20,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:20,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:20,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 209 transitions, 2199 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:20,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:20,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:20,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:21,166 INFO L124 PetriNetUnfolderBase]: 662/1240 cut-off events. [2024-06-20 16:24:21,166 INFO L125 PetriNetUnfolderBase]: For 225572/225572 co-relation queries the response was YES. [2024-06-20 16:24:21,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10650 conditions, 1240 events. 662/1240 cut-off events. For 225572/225572 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6733 event pairs, 139 based on Foata normal form. 2/1240 useless extension candidates. Maximal degree in co-relation 10532. Up to 1152 conditions per place. [2024-06-20 16:24:21,218 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 29 changer transitions 0/228 dead transitions. [2024-06-20 16:24:21,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 228 transitions, 2763 flow [2024-06-20 16:24:21,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:21,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-20 16:24:21,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-20 16:24:21,219 INFO L175 Difference]: Start difference. First operand has 259 places, 209 transitions, 2199 flow. Second operand 10 states and 118 transitions. [2024-06-20 16:24:21,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 228 transitions, 2763 flow [2024-06-20 16:24:21,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 228 transitions, 2688 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:21,641 INFO L231 Difference]: Finished difference. Result has 260 places, 213 transitions, 2261 flow [2024-06-20 16:24:21,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2261, PETRI_PLACES=260, PETRI_TRANSITIONS=213} [2024-06-20 16:24:21,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-20 16:24:21,642 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 213 transitions, 2261 flow [2024-06-20 16:24:21,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:21,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:21,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:21,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 16:24:21,642 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)] === [2024-06-20 16:24:21,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:21,643 INFO L85 PathProgramCache]: Analyzing trace with hash -248414584, now seen corresponding path program 20 times [2024-06-20 16:24:21,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:21,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344007426] [2024-06-20 16:24:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:21,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:22,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:22,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344007426] [2024-06-20 16:24:22,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344007426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:22,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:22,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:22,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242700246] [2024-06-20 16:24:22,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:22,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:22,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:22,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:22,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:22,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:22,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 213 transitions, 2261 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:22,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:22,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:22,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:22,967 INFO L124 PetriNetUnfolderBase]: 666/1248 cut-off events. [2024-06-20 16:24:22,968 INFO L125 PetriNetUnfolderBase]: For 230463/230463 co-relation queries the response was YES. [2024-06-20 16:24:22,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10749 conditions, 1248 events. 666/1248 cut-off events. For 230463/230463 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6775 event pairs, 147 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 10631. Up to 1201 conditions per place. [2024-06-20 16:24:22,979 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 200 selfloop transitions, 23 changer transitions 0/225 dead transitions. [2024-06-20 16:24:22,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 225 transitions, 2755 flow [2024-06-20 16:24:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 16:24:22,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:24:22,980 INFO L175 Difference]: Start difference. First operand has 260 places, 213 transitions, 2261 flow. Second operand 10 states and 110 transitions. [2024-06-20 16:24:22,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 225 transitions, 2755 flow [2024-06-20 16:24:23,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 225 transitions, 2674 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:23,394 INFO L231 Difference]: Finished difference. Result has 263 places, 214 transitions, 2256 flow [2024-06-20 16:24:23,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2256, PETRI_PLACES=263, PETRI_TRANSITIONS=214} [2024-06-20 16:24:23,395 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-20 16:24:23,395 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 214 transitions, 2256 flow [2024-06-20 16:24:23,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:23,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:23,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:23,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 16:24:23,395 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)] === [2024-06-20 16:24:23,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:23,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2141665108, now seen corresponding path program 12 times [2024-06-20 16:24:23,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:23,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428651419] [2024-06-20 16:24:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428651419] [2024-06-20 16:24:24,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428651419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:24,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:24,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:24,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878919839] [2024-06-20 16:24:24,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:24,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:24,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:24,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:24,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:24,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:24,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 214 transitions, 2256 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:24,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:24,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:24,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:24,795 INFO L124 PetriNetUnfolderBase]: 672/1258 cut-off events. [2024-06-20 16:24:24,795 INFO L125 PetriNetUnfolderBase]: For 235946/235946 co-relation queries the response was YES. [2024-06-20 16:24:24,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10856 conditions, 1258 events. 672/1258 cut-off events. For 235946/235946 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6853 event pairs, 136 based on Foata normal form. 2/1258 useless extension candidates. Maximal degree in co-relation 10737. Up to 1150 conditions per place. [2024-06-20 16:24:24,808 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 196 selfloop transitions, 34 changer transitions 0/232 dead transitions. [2024-06-20 16:24:24,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 232 transitions, 2996 flow [2024-06-20 16:24:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 16:24:24,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:24:24,809 INFO L175 Difference]: Start difference. First operand has 263 places, 214 transitions, 2256 flow. Second operand 10 states and 120 transitions. [2024-06-20 16:24:24,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 232 transitions, 2996 flow [2024-06-20 16:24:25,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 232 transitions, 2932 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:25,286 INFO L231 Difference]: Finished difference. Result has 265 places, 216 transitions, 2325 flow [2024-06-20 16:24:25,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2325, PETRI_PLACES=265, PETRI_TRANSITIONS=216} [2024-06-20 16:24:25,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-20 16:24:25,287 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 216 transitions, 2325 flow [2024-06-20 16:24:25,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:25,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:25,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 16:24:25,288 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)] === [2024-06-20 16:24:25,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash -248168320, now seen corresponding path program 5 times [2024-06-20 16:24:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:25,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916181485] [2024-06-20 16:24:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:25,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:26,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:26,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:26,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916181485] [2024-06-20 16:24:26,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916181485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:26,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:26,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326319090] [2024-06-20 16:24:26,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:26,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:26,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:26,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:26,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:26,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:26,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 216 transitions, 2325 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:26,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:26,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:26,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:26,860 INFO L124 PetriNetUnfolderBase]: 669/1253 cut-off events. [2024-06-20 16:24:26,860 INFO L125 PetriNetUnfolderBase]: For 231205/231205 co-relation queries the response was YES. [2024-06-20 16:24:26,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 1253 events. 669/1253 cut-off events. For 231205/231205 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6818 event pairs, 146 based on Foata normal form. 2/1253 useless extension candidates. Maximal degree in co-relation 10595. Up to 1200 conditions per place. [2024-06-20 16:24:26,872 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 22 changer transitions 0/229 dead transitions. [2024-06-20 16:24:26,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 229 transitions, 2811 flow [2024-06-20 16:24:26,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 16:24:26,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-20 16:24:26,873 INFO L175 Difference]: Start difference. First operand has 265 places, 216 transitions, 2325 flow. Second operand 10 states and 111 transitions. [2024-06-20 16:24:26,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 229 transitions, 2811 flow [2024-06-20 16:24:27,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 229 transitions, 2693 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:27,432 INFO L231 Difference]: Finished difference. Result has 267 places, 216 transitions, 2255 flow [2024-06-20 16:24:27,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2255, PETRI_PLACES=267, PETRI_TRANSITIONS=216} [2024-06-20 16:24:27,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-20 16:24:27,433 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 216 transitions, 2255 flow [2024-06-20 16:24:27,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:27,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:27,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:27,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 16:24:27,433 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)] === [2024-06-20 16:24:27,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2110252866, now seen corresponding path program 13 times [2024-06-20 16:24:27,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:27,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087161788] [2024-06-20 16:24:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:28,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:28,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087161788] [2024-06-20 16:24:28,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087161788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:28,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:28,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458821147] [2024-06-20 16:24:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:28,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:28,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:28,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:28,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:28,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:28,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 216 transitions, 2255 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:28,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:28,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:28,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:28,828 INFO L124 PetriNetUnfolderBase]: 665/1247 cut-off events. [2024-06-20 16:24:28,829 INFO L125 PetriNetUnfolderBase]: For 228941/228941 co-relation queries the response was YES. [2024-06-20 16:24:28,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10429 conditions, 1247 events. 665/1247 cut-off events. For 228941/228941 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6806 event pairs, 137 based on Foata normal form. 2/1247 useless extension candidates. Maximal degree in co-relation 10308. Up to 1159 conditions per place. [2024-06-20 16:24:28,840 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 30 changer transitions 0/230 dead transitions. [2024-06-20 16:24:28,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 230 transitions, 2749 flow [2024-06-20 16:24:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-20 16:24:28,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-20 16:24:28,842 INFO L175 Difference]: Start difference. First operand has 267 places, 216 transitions, 2255 flow. Second operand 10 states and 116 transitions. [2024-06-20 16:24:28,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 230 transitions, 2749 flow [2024-06-20 16:24:29,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 230 transitions, 2619 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-06-20 16:24:29,347 INFO L231 Difference]: Finished difference. Result has 265 places, 216 transitions, 2190 flow [2024-06-20 16:24:29,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2125, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2190, PETRI_PLACES=265, PETRI_TRANSITIONS=216} [2024-06-20 16:24:29,347 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-20 16:24:29,348 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 216 transitions, 2190 flow [2024-06-20 16:24:29,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:29,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:29,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:29,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 16:24:29,348 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)] === [2024-06-20 16:24:29,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:29,349 INFO L85 PathProgramCache]: Analyzing trace with hash -254848324, now seen corresponding path program 21 times [2024-06-20 16:24:29,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:29,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091706342] [2024-06-20 16:24:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:29,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:30,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:30,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091706342] [2024-06-20 16:24:30,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091706342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:30,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:30,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:30,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295577296] [2024-06-20 16:24:30,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:30,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:30,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:30,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:30,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:30,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 216 transitions, 2190 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:30,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:30,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:30,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:30,698 INFO L124 PetriNetUnfolderBase]: 669/1255 cut-off events. [2024-06-20 16:24:30,698 INFO L125 PetriNetUnfolderBase]: For 233364/233364 co-relation queries the response was YES. [2024-06-20 16:24:30,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10419 conditions, 1255 events. 669/1255 cut-off events. For 233364/233364 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6848 event pairs, 127 based on Foata normal form. 2/1255 useless extension candidates. Maximal degree in co-relation 10300. Up to 950 conditions per place. [2024-06-20 16:24:30,709 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 186 selfloop transitions, 50 changer transitions 0/238 dead transitions. [2024-06-20 16:24:30,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 238 transitions, 2956 flow [2024-06-20 16:24:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:30,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:24:30,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:24:30,711 INFO L175 Difference]: Start difference. First operand has 265 places, 216 transitions, 2190 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:24:30,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 238 transitions, 2956 flow [2024-06-20 16:24:31,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 238 transitions, 2874 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:31,146 INFO L231 Difference]: Finished difference. Result has 267 places, 217 transitions, 2242 flow [2024-06-20 16:24:31,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2242, PETRI_PLACES=267, PETRI_TRANSITIONS=217} [2024-06-20 16:24:31,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-20 16:24:31,146 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 217 transitions, 2242 flow [2024-06-20 16:24:31,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:31,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:31,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:31,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 16:24:31,147 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)] === [2024-06-20 16:24:31,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:31,147 INFO L85 PathProgramCache]: Analyzing trace with hash -254843488, now seen corresponding path program 14 times [2024-06-20 16:24:31,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:31,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501724319] [2024-06-20 16:24:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:31,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:32,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:32,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501724319] [2024-06-20 16:24:32,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501724319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:32,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:32,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:32,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210714737] [2024-06-20 16:24:32,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:32,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:32,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:32,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:32,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:32,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:32,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 217 transitions, 2242 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:32,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:32,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:32,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:32,600 INFO L124 PetriNetUnfolderBase]: 665/1249 cut-off events. [2024-06-20 16:24:32,601 INFO L125 PetriNetUnfolderBase]: For 220719/220719 co-relation queries the response was YES. [2024-06-20 16:24:32,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10165 conditions, 1249 events. 665/1249 cut-off events. For 220719/220719 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6800 event pairs, 132 based on Foata normal form. 2/1249 useless extension candidates. Maximal degree in co-relation 10045. Up to 1102 conditions per place. [2024-06-20 16:24:32,613 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 182 selfloop transitions, 51 changer transitions 0/235 dead transitions. [2024-06-20 16:24:32,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 235 transitions, 2758 flow [2024-06-20 16:24:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:24:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:24:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-20 16:24:32,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 16:24:32,614 INFO L175 Difference]: Start difference. First operand has 267 places, 217 transitions, 2242 flow. Second operand 12 states and 138 transitions. [2024-06-20 16:24:32,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 235 transitions, 2758 flow [2024-06-20 16:24:33,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 235 transitions, 2525 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:33,146 INFO L231 Difference]: Finished difference. Result has 269 places, 217 transitions, 2117 flow [2024-06-20 16:24:33,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2117, PETRI_PLACES=269, PETRI_TRANSITIONS=217} [2024-06-20 16:24:33,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-20 16:24:33,157 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 217 transitions, 2117 flow [2024-06-20 16:24:33,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:33,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:33,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:33,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 16:24:33,157 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)] === [2024-06-20 16:24:33,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:33,158 INFO L85 PathProgramCache]: Analyzing trace with hash -254843674, now seen corresponding path program 22 times [2024-06-20 16:24:33,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:33,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623744654] [2024-06-20 16:24:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:33,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:34,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:34,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623744654] [2024-06-20 16:24:34,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623744654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:34,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:34,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:34,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377448555] [2024-06-20 16:24:34,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:34,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:34,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:34,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:34,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:34,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 217 transitions, 2117 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:34,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:34,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:34,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:34,598 INFO L124 PetriNetUnfolderBase]: 668/1262 cut-off events. [2024-06-20 16:24:34,599 INFO L125 PetriNetUnfolderBase]: For 259228/259228 co-relation queries the response was YES. [2024-06-20 16:24:34,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9041 conditions, 1262 events. 668/1262 cut-off events. For 259228/259228 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6972 event pairs, 123 based on Foata normal form. 20/1280 useless extension candidates. Maximal degree in co-relation 8922. Up to 1051 conditions per place. [2024-06-20 16:24:34,611 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 44 changer transitions 12/239 dead transitions. [2024-06-20 16:24:34,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 239 transitions, 2679 flow [2024-06-20 16:24:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:34,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 16:24:34,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 16:24:34,613 INFO L175 Difference]: Start difference. First operand has 269 places, 217 transitions, 2117 flow. Second operand 11 states and 134 transitions. [2024-06-20 16:24:34,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 239 transitions, 2679 flow [2024-06-20 16:24:35,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 239 transitions, 2367 flow, removed 18 selfloop flow, removed 14 redundant places. [2024-06-20 16:24:35,081 INFO L231 Difference]: Finished difference. Result has 266 places, 212 transitions, 1853 flow [2024-06-20 16:24:35,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1853, PETRI_PLACES=266, PETRI_TRANSITIONS=212} [2024-06-20 16:24:35,081 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-20 16:24:35,081 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 212 transitions, 1853 flow [2024-06-20 16:24:35,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:35,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:35,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:35,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 16:24:35,082 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)] === [2024-06-20 16:24:35,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1536543890, now seen corresponding path program 1 times [2024-06-20 16:24:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:35,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543711303] [2024-06-20 16:24:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:35,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:35,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:35,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543711303] [2024-06-20 16:24:35,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543711303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:35,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:35,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:35,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457596061] [2024-06-20 16:24:35,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:35,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:35,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:35,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:36,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:36,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 212 transitions, 1853 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:36,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:36,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:36,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:36,465 INFO L124 PetriNetUnfolderBase]: 653/1237 cut-off events. [2024-06-20 16:24:36,466 INFO L125 PetriNetUnfolderBase]: For 237432/237432 co-relation queries the response was YES. [2024-06-20 16:24:36,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9220 conditions, 1237 events. 653/1237 cut-off events. For 237432/237432 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6747 event pairs, 118 based on Foata normal form. 8/1243 useless extension candidates. Maximal degree in co-relation 9101. Up to 597 conditions per place. [2024-06-20 16:24:36,477 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 92 changer transitions 18/242 dead transitions. [2024-06-20 16:24:36,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 242 transitions, 2619 flow [2024-06-20 16:24:36,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:36,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-20 16:24:36,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-20 16:24:36,478 INFO L175 Difference]: Start difference. First operand has 266 places, 212 transitions, 1853 flow. Second operand 11 states and 140 transitions. [2024-06-20 16:24:36,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 242 transitions, 2619 flow [2024-06-20 16:24:36,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 242 transitions, 2393 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-20 16:24:36,996 INFO L231 Difference]: Finished difference. Result has 263 places, 208 transitions, 1795 flow [2024-06-20 16:24:36,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1795, PETRI_PLACES=263, PETRI_TRANSITIONS=208} [2024-06-20 16:24:36,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-20 16:24:36,997 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 208 transitions, 1795 flow [2024-06-20 16:24:36,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:36,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:36,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:36,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 16:24:36,998 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)] === [2024-06-20 16:24:36,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:36,998 INFO L85 PathProgramCache]: Analyzing trace with hash -953838386, now seen corresponding path program 2 times [2024-06-20 16:24:36,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:36,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018564321] [2024-06-20 16:24:36,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:36,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:38,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:38,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018564321] [2024-06-20 16:24:38,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018564321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:38,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:38,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:38,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512904252] [2024-06-20 16:24:38,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:38,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:38,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:38,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:38,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:38,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:38,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 208 transitions, 1795 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:38,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:38,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:38,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:38,554 INFO L124 PetriNetUnfolderBase]: 586/1104 cut-off events. [2024-06-20 16:24:38,554 INFO L125 PetriNetUnfolderBase]: For 158573/158573 co-relation queries the response was YES. [2024-06-20 16:24:38,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7067 conditions, 1104 events. 586/1104 cut-off events. For 158573/158573 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5877 event pairs, 91 based on Foata normal form. 8/1110 useless extension candidates. Maximal degree in co-relation 6947. Up to 587 conditions per place. [2024-06-20 16:24:38,564 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 130 selfloop transitions, 94 changer transitions 17/243 dead transitions. [2024-06-20 16:24:38,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 243 transitions, 2597 flow [2024-06-20 16:24:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-20 16:24:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-20 16:24:38,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 176 transitions. [2024-06-20 16:24:38,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-20 16:24:38,567 INFO L175 Difference]: Start difference. First operand has 263 places, 208 transitions, 1795 flow. Second operand 14 states and 176 transitions. [2024-06-20 16:24:38,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 243 transitions, 2597 flow [2024-06-20 16:24:38,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 243 transitions, 2447 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:38,905 INFO L231 Difference]: Finished difference. Result has 261 places, 200 transitions, 1758 flow [2024-06-20 16:24:38,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1758, PETRI_PLACES=261, PETRI_TRANSITIONS=200} [2024-06-20 16:24:38,905 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-20 16:24:38,906 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 200 transitions, 1758 flow [2024-06-20 16:24:38,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:38,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:38,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:38,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 16:24:38,906 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)] === [2024-06-20 16:24:38,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash 59075580, now seen corresponding path program 3 times [2024-06-20 16:24:38,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:38,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956776937] [2024-06-20 16:24:38,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:38,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:39,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:39,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956776937] [2024-06-20 16:24:39,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956776937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:39,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:39,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:39,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671800909] [2024-06-20 16:24:39,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:39,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:39,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:39,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:39,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:39,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:39,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 200 transitions, 1758 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:39,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:39,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:39,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:40,265 INFO L124 PetriNetUnfolderBase]: 572/1082 cut-off events. [2024-06-20 16:24:40,266 INFO L125 PetriNetUnfolderBase]: For 156717/156717 co-relation queries the response was YES. [2024-06-20 16:24:40,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 1082 events. 572/1082 cut-off events. For 156717/156717 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5792 event pairs, 93 based on Foata normal form. 10/1090 useless extension candidates. Maximal degree in co-relation 6884. Up to 655 conditions per place. [2024-06-20 16:24:40,275 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 90 changer transitions 16/227 dead transitions. [2024-06-20 16:24:40,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 227 transitions, 2312 flow [2024-06-20 16:24:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 16:24:40,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 16:24:40,276 INFO L175 Difference]: Start difference. First operand has 261 places, 200 transitions, 1758 flow. Second operand 11 states and 138 transitions. [2024-06-20 16:24:40,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 227 transitions, 2312 flow [2024-06-20 16:24:40,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 227 transitions, 2044 flow, removed 2 selfloop flow, removed 18 redundant places. [2024-06-20 16:24:40,584 INFO L231 Difference]: Finished difference. Result has 251 places, 198 transitions, 1666 flow [2024-06-20 16:24:40,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1666, PETRI_PLACES=251, PETRI_TRANSITIONS=198} [2024-06-20 16:24:40,584 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-20 16:24:40,584 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 198 transitions, 1666 flow [2024-06-20 16:24:40,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:40,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:40,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:40,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 16:24:40,585 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)] === [2024-06-20 16:24:40,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1260523752, now seen corresponding path program 4 times [2024-06-20 16:24:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973465825] [2024-06-20 16:24:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:40,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:41,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:41,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:41,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973465825] [2024-06-20 16:24:41,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973465825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:41,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:41,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:41,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756824491] [2024-06-20 16:24:41,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:41,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:41,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:41,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:41,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:41,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:41,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 198 transitions, 1666 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:41,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:41,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:41,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:41,902 INFO L124 PetriNetUnfolderBase]: 552/1046 cut-off events. [2024-06-20 16:24:41,902 INFO L125 PetriNetUnfolderBase]: For 136951/136951 co-relation queries the response was YES. [2024-06-20 16:24:41,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6545 conditions, 1046 events. 552/1046 cut-off events. For 136951/136951 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5559 event pairs, 84 based on Foata normal form. 8/1052 useless extension candidates. Maximal degree in co-relation 6430. Up to 552 conditions per place. [2024-06-20 16:24:41,910 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 88 changer transitions 16/228 dead transitions. [2024-06-20 16:24:41,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 228 transitions, 2400 flow [2024-06-20 16:24:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 16:24:41,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:24:41,925 INFO L175 Difference]: Start difference. First operand has 251 places, 198 transitions, 1666 flow. Second operand 11 states and 143 transitions. [2024-06-20 16:24:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 228 transitions, 2400 flow [2024-06-20 16:24:42,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 228 transitions, 2212 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:42,160 INFO L231 Difference]: Finished difference. Result has 249 places, 194 transitions, 1639 flow [2024-06-20 16:24:42,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1639, PETRI_PLACES=249, PETRI_TRANSITIONS=194} [2024-06-20 16:24:42,160 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-20 16:24:42,160 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 194 transitions, 1639 flow [2024-06-20 16:24:42,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:42,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:42,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:42,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 16:24:42,161 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)] === [2024-06-20 16:24:42,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1787973184, now seen corresponding path program 5 times [2024-06-20 16:24:42,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:42,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535127309] [2024-06-20 16:24:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:42,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:43,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:43,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:43,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535127309] [2024-06-20 16:24:43,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535127309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:43,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:43,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:43,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56489137] [2024-06-20 16:24:43,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:43,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:43,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:43,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:43,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:43,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:43,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 194 transitions, 1639 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:43,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:43,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:43,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:43,581 INFO L124 PetriNetUnfolderBase]: 557/1061 cut-off events. [2024-06-20 16:24:43,581 INFO L125 PetriNetUnfolderBase]: For 173148/173148 co-relation queries the response was YES. [2024-06-20 16:24:43,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1061 events. 557/1061 cut-off events. For 173148/173148 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5644 event pairs, 77 based on Foata normal form. 16/1075 useless extension candidates. Maximal degree in co-relation 6648. Up to 507 conditions per place. [2024-06-20 16:24:43,590 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 118 selfloop transitions, 84 changer transitions 25/229 dead transitions. [2024-06-20 16:24:43,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 229 transitions, 2401 flow [2024-06-20 16:24:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 16:24:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 16:24:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-20 16:24:43,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41687344913151364 [2024-06-20 16:24:43,591 INFO L175 Difference]: Start difference. First operand has 249 places, 194 transitions, 1639 flow. Second operand 13 states and 168 transitions. [2024-06-20 16:24:43,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 229 transitions, 2401 flow [2024-06-20 16:24:43,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 229 transitions, 2214 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:43,872 INFO L231 Difference]: Finished difference. Result has 247 places, 183 transitions, 1550 flow [2024-06-20 16:24:43,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1550, PETRI_PLACES=247, PETRI_TRANSITIONS=183} [2024-06-20 16:24:43,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-20 16:24:43,873 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 183 transitions, 1550 flow [2024-06-20 16:24:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:43,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:43,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:43,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 16:24:43,873 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)] === [2024-06-20 16:24:43,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash -656503066, now seen corresponding path program 6 times [2024-06-20 16:24:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:43,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723476169] [2024-06-20 16:24:43,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:43,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:44,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:44,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:44,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723476169] [2024-06-20 16:24:44,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723476169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:44,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:44,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:44,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107921062] [2024-06-20 16:24:44,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:44,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:44,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:44,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:44,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:44,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 183 transitions, 1550 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:44,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:44,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:44,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:45,203 INFO L124 PetriNetUnfolderBase]: 523/991 cut-off events. [2024-06-20 16:24:45,203 INFO L125 PetriNetUnfolderBase]: For 143244/143244 co-relation queries the response was YES. [2024-06-20 16:24:45,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6480 conditions, 991 events. 523/991 cut-off events. For 143244/143244 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5154 event pairs, 89 based on Foata normal form. 10/999 useless extension candidates. Maximal degree in co-relation 6379. Up to 748 conditions per place. [2024-06-20 16:24:45,212 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 44 changer transitions 16/207 dead transitions. [2024-06-20 16:24:45,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 207 transitions, 2056 flow [2024-06-20 16:24:45,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:24:45,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:24:45,213 INFO L175 Difference]: Start difference. First operand has 247 places, 183 transitions, 1550 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:24:45,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 207 transitions, 2056 flow [2024-06-20 16:24:45,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 207 transitions, 1850 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-06-20 16:24:45,445 INFO L231 Difference]: Finished difference. Result has 231 places, 181 transitions, 1426 flow [2024-06-20 16:24:45,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1426, PETRI_PLACES=231, PETRI_TRANSITIONS=181} [2024-06-20 16:24:45,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-20 16:24:45,445 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 181 transitions, 1426 flow [2024-06-20 16:24:45,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:45,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:45,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:45,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 16:24:45,446 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)] === [2024-06-20 16:24:45,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash 543307376, now seen corresponding path program 7 times [2024-06-20 16:24:45,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:45,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279860453] [2024-06-20 16:24:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:45,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:46,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279860453] [2024-06-20 16:24:46,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279860453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:46,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:46,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:46,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501379450] [2024-06-20 16:24:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:46,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:46,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:46,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:46,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:46,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:46,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 181 transitions, 1426 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:46,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:46,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:46,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:47,036 INFO L124 PetriNetUnfolderBase]: 491/927 cut-off events. [2024-06-20 16:24:47,037 INFO L125 PetriNetUnfolderBase]: For 96136/96136 co-relation queries the response was YES. [2024-06-20 16:24:47,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5154 conditions, 927 events. 491/927 cut-off events. For 96136/96136 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4728 event pairs, 66 based on Foata normal form. 10/935 useless extension candidates. Maximal degree in co-relation 5057. Up to 694 conditions per place. [2024-06-20 16:24:47,044 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 39 changer transitions 17/208 dead transitions. [2024-06-20 16:24:47,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 208 transitions, 1944 flow [2024-06-20 16:24:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 16:24:47,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 16:24:47,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-20 16:24:47,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369727047146402 [2024-06-20 16:24:47,045 INFO L175 Difference]: Start difference. First operand has 231 places, 181 transitions, 1426 flow. Second operand 13 states and 149 transitions. [2024-06-20 16:24:47,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 208 transitions, 1944 flow [2024-06-20 16:24:47,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 208 transitions, 1846 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:47,186 INFO L231 Difference]: Finished difference. Result has 232 places, 178 transitions, 1402 flow [2024-06-20 16:24:47,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1402, PETRI_PLACES=232, PETRI_TRANSITIONS=178} [2024-06-20 16:24:47,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-20 16:24:47,187 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 178 transitions, 1402 flow [2024-06-20 16:24:47,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:47,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:47,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:47,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 16:24:47,188 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)] === [2024-06-20 16:24:47,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash -567263974, now seen corresponding path program 8 times [2024-06-20 16:24:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:47,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719887224] [2024-06-20 16:24:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:47,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:48,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:48,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719887224] [2024-06-20 16:24:48,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719887224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:48,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:48,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:48,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486193234] [2024-06-20 16:24:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:48,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:48,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:48,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:48,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 178 transitions, 1402 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:48,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:48,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:48,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:48,517 INFO L124 PetriNetUnfolderBase]: 494/936 cut-off events. [2024-06-20 16:24:48,518 INFO L125 PetriNetUnfolderBase]: For 122823/122823 co-relation queries the response was YES. [2024-06-20 16:24:48,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5992 conditions, 936 events. 494/936 cut-off events. For 122823/122823 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4761 event pairs, 71 based on Foata normal form. 8/942 useless extension candidates. Maximal degree in co-relation 5895. Up to 610 conditions per place. [2024-06-20 16:24:48,525 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 43 changer transitions 16/207 dead transitions. [2024-06-20 16:24:48,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 207 transitions, 2088 flow [2024-06-20 16:24:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:48,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-20 16:24:48,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-20 16:24:48,526 INFO L175 Difference]: Start difference. First operand has 232 places, 178 transitions, 1402 flow. Second operand 11 states and 143 transitions. [2024-06-20 16:24:48,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 207 transitions, 2088 flow [2024-06-20 16:24:48,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 207 transitions, 1996 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 16:24:48,725 INFO L231 Difference]: Finished difference. Result has 226 places, 174 transitions, 1381 flow [2024-06-20 16:24:48,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1381, PETRI_PLACES=226, PETRI_TRANSITIONS=174} [2024-06-20 16:24:48,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-20 16:24:48,726 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 174 transitions, 1381 flow [2024-06-20 16:24:48,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:48,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:48,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:48,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 16:24:48,726 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)] === [2024-06-20 16:24:48,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:48,727 INFO L85 PathProgramCache]: Analyzing trace with hash 752617980, now seen corresponding path program 9 times [2024-06-20 16:24:48,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:48,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766618875] [2024-06-20 16:24:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:48,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:49,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766618875] [2024-06-20 16:24:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766618875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:49,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479304384] [2024-06-20 16:24:49,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:49,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:49,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:49,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:49,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:49,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:49,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 174 transitions, 1381 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:49,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:49,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:49,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:50,202 INFO L124 PetriNetUnfolderBase]: 455/859 cut-off events. [2024-06-20 16:24:50,203 INFO L125 PetriNetUnfolderBase]: For 93621/93621 co-relation queries the response was YES. [2024-06-20 16:24:50,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4902 conditions, 859 events. 455/859 cut-off events. For 93621/93621 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4266 event pairs, 58 based on Foata normal form. 10/867 useless extension candidates. Maximal degree in co-relation 4807. Up to 623 conditions per place. [2024-06-20 16:24:50,228 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 37 changer transitions 20/199 dead transitions. [2024-06-20 16:24:50,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 199 transitions, 1861 flow [2024-06-20 16:24:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-20 16:24:50,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-20 16:24:50,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 155 transitions. [2024-06-20 16:24:50,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-20 16:24:50,229 INFO L175 Difference]: Start difference. First operand has 226 places, 174 transitions, 1381 flow. Second operand 14 states and 155 transitions. [2024-06-20 16:24:50,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 199 transitions, 1861 flow [2024-06-20 16:24:50,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 199 transitions, 1769 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:50,382 INFO L231 Difference]: Finished difference. Result has 224 places, 166 transitions, 1318 flow [2024-06-20 16:24:50,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1318, PETRI_PLACES=224, PETRI_TRANSITIONS=166} [2024-06-20 16:24:50,383 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-20 16:24:50,383 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 166 transitions, 1318 flow [2024-06-20 16:24:50,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:50,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:50,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 16:24:50,383 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)] === [2024-06-20 16:24:50,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash -585698000, now seen corresponding path program 10 times [2024-06-20 16:24:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:50,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669097956] [2024-06-20 16:24:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:50,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:51,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669097956] [2024-06-20 16:24:51,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669097956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:51,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:51,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:51,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183845946] [2024-06-20 16:24:51,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:51,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:51,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:51,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:51,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:51,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:51,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 166 transitions, 1318 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:51,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:51,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:51,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:51,760 INFO L124 PetriNetUnfolderBase]: 417/773 cut-off events. [2024-06-20 16:24:51,761 INFO L125 PetriNetUnfolderBase]: For 80534/80534 co-relation queries the response was YES. [2024-06-20 16:24:51,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4504 conditions, 773 events. 417/773 cut-off events. For 80534/80534 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3716 event pairs, 48 based on Foata normal form. 8/779 useless extension candidates. Maximal degree in co-relation 4412. Up to 289 conditions per place. [2024-06-20 16:24:51,766 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 90 changer transitions 13/190 dead transitions. [2024-06-20 16:24:51,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 190 transitions, 1934 flow [2024-06-20 16:24:51,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-20 16:24:51,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-20 16:24:51,767 INFO L175 Difference]: Start difference. First operand has 224 places, 166 transitions, 1318 flow. Second operand 11 states and 135 transitions. [2024-06-20 16:24:51,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 190 transitions, 1934 flow [2024-06-20 16:24:51,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 190 transitions, 1800 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-06-20 16:24:51,865 INFO L231 Difference]: Finished difference. Result has 210 places, 162 transitions, 1357 flow [2024-06-20 16:24:51,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1357, PETRI_PLACES=210, PETRI_TRANSITIONS=162} [2024-06-20 16:24:51,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-20 16:24:51,866 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 162 transitions, 1357 flow [2024-06-20 16:24:51,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:51,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:51,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:51,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 16:24:51,866 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)] === [2024-06-20 16:24:51,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash 414684954, now seen corresponding path program 11 times [2024-06-20 16:24:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:51,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016563390] [2024-06-20 16:24:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:52,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016563390] [2024-06-20 16:24:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016563390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:52,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:52,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156564160] [2024-06-20 16:24:52,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:52,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:52,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:52,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 162 transitions, 1357 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:52,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:52,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:52,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:53,338 INFO L124 PetriNetUnfolderBase]: 454/852 cut-off events. [2024-06-20 16:24:53,339 INFO L125 PetriNetUnfolderBase]: For 122755/122755 co-relation queries the response was YES. [2024-06-20 16:24:53,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6127 conditions, 852 events. 454/852 cut-off events. For 122755/122755 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4239 event pairs, 81 based on Foata normal form. 8/858 useless extension candidates. Maximal degree in co-relation 6039. Up to 464 conditions per place. [2024-06-20 16:24:53,344 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 47 changer transitions 10/189 dead transitions. [2024-06-20 16:24:53,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 189 transitions, 1991 flow [2024-06-20 16:24:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 16:24:53,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-20 16:24:53,346 INFO L175 Difference]: Start difference. First operand has 210 places, 162 transitions, 1357 flow. Second operand 11 states and 141 transitions. [2024-06-20 16:24:53,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 189 transitions, 1991 flow [2024-06-20 16:24:53,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 189 transitions, 1837 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:53,511 INFO L231 Difference]: Finished difference. Result has 205 places, 159 transitions, 1289 flow [2024-06-20 16:24:53,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1289, PETRI_PLACES=205, PETRI_TRANSITIONS=159} [2024-06-20 16:24:53,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-20 16:24:53,511 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 159 transitions, 1289 flow [2024-06-20 16:24:53,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:53,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:53,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:53,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 16:24:53,512 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)] === [2024-06-20 16:24:53,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1138176892, now seen corresponding path program 12 times [2024-06-20 16:24:53,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:53,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717972140] [2024-06-20 16:24:53,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:53,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:54,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:54,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717972140] [2024-06-20 16:24:54,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717972140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:54,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:54,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769224619] [2024-06-20 16:24:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:54,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:54,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:54,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:54,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:54,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 159 transitions, 1289 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:54,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:54,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:54,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:55,056 INFO L124 PetriNetUnfolderBase]: 445/837 cut-off events. [2024-06-20 16:24:55,056 INFO L125 PetriNetUnfolderBase]: For 118355/118355 co-relation queries the response was YES. [2024-06-20 16:24:55,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5828 conditions, 837 events. 445/837 cut-off events. For 118355/118355 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4147 event pairs, 82 based on Foata normal form. 12/847 useless extension candidates. Maximal degree in co-relation 5743. Up to 602 conditions per place. [2024-06-20 16:24:55,062 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 47 changer transitions 12/184 dead transitions. [2024-06-20 16:24:55,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 184 transitions, 1747 flow [2024-06-20 16:24:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-20 16:24:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-20 16:24:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-20 16:24:55,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-20 16:24:55,063 INFO L175 Difference]: Start difference. First operand has 205 places, 159 transitions, 1289 flow. Second operand 13 states and 155 transitions. [2024-06-20 16:24:55,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 184 transitions, 1747 flow [2024-06-20 16:24:55,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 184 transitions, 1659 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:55,183 INFO L231 Difference]: Finished difference. Result has 204 places, 154 transitions, 1260 flow [2024-06-20 16:24:55,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1260, PETRI_PLACES=204, PETRI_TRANSITIONS=154} [2024-06-20 16:24:55,183 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-20 16:24:55,184 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 154 transitions, 1260 flow [2024-06-20 16:24:55,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:55,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:55,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:55,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 16:24:55,184 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)] === [2024-06-20 16:24:55,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:55,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1132820092, now seen corresponding path program 13 times [2024-06-20 16:24:55,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:55,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130145143] [2024-06-20 16:24:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:55,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:55,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:55,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130145143] [2024-06-20 16:24:55,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130145143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:55,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:55,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:55,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015439874] [2024-06-20 16:24:55,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:55,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:55,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:55,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:55,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:56,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:56,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 154 transitions, 1260 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:56,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:56,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:56,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:56,353 INFO L124 PetriNetUnfolderBase]: 454/864 cut-off events. [2024-06-20 16:24:56,353 INFO L125 PetriNetUnfolderBase]: For 125859/125859 co-relation queries the response was YES. [2024-06-20 16:24:56,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6520 conditions, 864 events. 454/864 cut-off events. For 125859/125859 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4348 event pairs, 95 based on Foata normal form. 8/870 useless extension candidates. Maximal degree in co-relation 6437. Up to 582 conditions per place. [2024-06-20 16:24:56,359 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 44 changer transitions 8/179 dead transitions. [2024-06-20 16:24:56,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 179 transitions, 1854 flow [2024-06-20 16:24:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-20 16:24:56,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-20 16:24:56,360 INFO L175 Difference]: Start difference. First operand has 204 places, 154 transitions, 1260 flow. Second operand 11 states and 138 transitions. [2024-06-20 16:24:56,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 179 transitions, 1854 flow [2024-06-20 16:24:56,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 179 transitions, 1740 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-20 16:24:56,498 INFO L231 Difference]: Finished difference. Result has 199 places, 151 transitions, 1214 flow [2024-06-20 16:24:56,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=199, PETRI_TRANSITIONS=151} [2024-06-20 16:24:56,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-20 16:24:56,499 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 151 transitions, 1214 flow [2024-06-20 16:24:56,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:56,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:56,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:56,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 16:24:56,499 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)] === [2024-06-20 16:24:56,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1132612702, now seen corresponding path program 14 times [2024-06-20 16:24:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257253502] [2024-06-20 16:24:56,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:56,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:57,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:57,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257253502] [2024-06-20 16:24:57,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257253502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:57,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:57,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270996509] [2024-06-20 16:24:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:57,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:57,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:57,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:57,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:57,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 151 transitions, 1214 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:57,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:57,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:57,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:57,880 INFO L124 PetriNetUnfolderBase]: 422/800 cut-off events. [2024-06-20 16:24:57,881 INFO L125 PetriNetUnfolderBase]: For 103755/103755 co-relation queries the response was YES. [2024-06-20 16:24:57,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5547 conditions, 800 events. 422/800 cut-off events. For 103755/103755 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3912 event pairs, 84 based on Foata normal form. 10/808 useless extension candidates. Maximal degree in co-relation 5465. Up to 607 conditions per place. [2024-06-20 16:24:57,886 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 36 changer transitions 11/171 dead transitions. [2024-06-20 16:24:57,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 171 transitions, 1626 flow [2024-06-20 16:24:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 16:24:57,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-20 16:24:57,887 INFO L175 Difference]: Start difference. First operand has 199 places, 151 transitions, 1214 flow. Second operand 11 states and 130 transitions. [2024-06-20 16:24:57,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 171 transitions, 1626 flow [2024-06-20 16:24:58,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 171 transitions, 1534 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:58,005 INFO L231 Difference]: Finished difference. Result has 197 places, 148 transitions, 1168 flow [2024-06-20 16:24:58,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1168, PETRI_PLACES=197, PETRI_TRANSITIONS=148} [2024-06-20 16:24:58,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-20 16:24:58,006 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 148 transitions, 1168 flow [2024-06-20 16:24:58,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:58,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:58,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:58,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 16:24:58,007 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)] === [2024-06-20 16:24:58,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:58,007 INFO L85 PathProgramCache]: Analyzing trace with hash -582123080, now seen corresponding path program 15 times [2024-06-20 16:24:58,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:58,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151563508] [2024-06-20 16:24:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:58,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:58,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:58,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151563508] [2024-06-20 16:24:58,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151563508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:58,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:58,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:58,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630954221] [2024-06-20 16:24:58,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:58,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:58,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:58,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:59,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:24:59,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 148 transitions, 1168 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:59,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:59,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:24:59,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:59,512 INFO L124 PetriNetUnfolderBase]: 437/837 cut-off events. [2024-06-20 16:24:59,512 INFO L125 PetriNetUnfolderBase]: For 118925/118925 co-relation queries the response was YES. [2024-06-20 16:24:59,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 837 events. 437/837 cut-off events. For 118925/118925 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4193 event pairs, 89 based on Foata normal form. 8/843 useless extension candidates. Maximal degree in co-relation 6165. Up to 445 conditions per place. [2024-06-20 16:24:59,518 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 70 changer transitions 11/175 dead transitions. [2024-06-20 16:24:59,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 175 transitions, 1754 flow [2024-06-20 16:24:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:24:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:24:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-20 16:24:59,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-20 16:24:59,519 INFO L175 Difference]: Start difference. First operand has 197 places, 148 transitions, 1168 flow. Second operand 12 states and 148 transitions. [2024-06-20 16:24:59,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 175 transitions, 1754 flow [2024-06-20 16:24:59,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 175 transitions, 1674 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:59,643 INFO L231 Difference]: Finished difference. Result has 195 places, 144 transitions, 1206 flow [2024-06-20 16:24:59,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1206, PETRI_PLACES=195, PETRI_TRANSITIONS=144} [2024-06-20 16:24:59,643 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-20 16:24:59,643 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 144 transitions, 1206 flow [2024-06-20 16:24:59,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:24:59,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:59,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:59,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 16:24:59,644 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)] === [2024-06-20 16:24:59,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash 414829104, now seen corresponding path program 16 times [2024-06-20 16:24:59,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:59,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697592385] [2024-06-20 16:24:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:59,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:00,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:00,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697592385] [2024-06-20 16:25:00,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697592385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:00,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:00,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:00,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652824151] [2024-06-20 16:25:00,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:00,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:00,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:00,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:00,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:00,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 144 transitions, 1206 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:00,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:00,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:00,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:01,077 INFO L124 PetriNetUnfolderBase]: 425/817 cut-off events. [2024-06-20 16:25:01,077 INFO L125 PetriNetUnfolderBase]: For 115627/115627 co-relation queries the response was YES. [2024-06-20 16:25:01,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6219 conditions, 817 events. 425/817 cut-off events. For 115627/115627 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4073 event pairs, 97 based on Foata normal form. 8/823 useless extension candidates. Maximal degree in co-relation 6139. Up to 578 conditions per place. [2024-06-20 16:25:01,083 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 37 changer transitions 10/168 dead transitions. [2024-06-20 16:25:01,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 168 transitions, 1754 flow [2024-06-20 16:25:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:25:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:25:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-20 16:25:01,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:25:01,084 INFO L175 Difference]: Start difference. First operand has 195 places, 144 transitions, 1206 flow. Second operand 12 states and 144 transitions. [2024-06-20 16:25:01,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 168 transitions, 1754 flow [2024-06-20 16:25:01,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 168 transitions, 1611 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:01,201 INFO L231 Difference]: Finished difference. Result has 192 places, 140 transitions, 1117 flow [2024-06-20 16:25:01,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1117, PETRI_PLACES=192, PETRI_TRANSITIONS=140} [2024-06-20 16:25:01,201 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-20 16:25:01,202 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 140 transitions, 1117 flow [2024-06-20 16:25:01,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:01,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:01,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:01,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 16:25:01,202 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)] === [2024-06-20 16:25:01,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:01,203 INFO L85 PathProgramCache]: Analyzing trace with hash 614136474, now seen corresponding path program 17 times [2024-06-20 16:25:01,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:01,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728303181] [2024-06-20 16:25:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:01,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:01,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:01,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:01,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728303181] [2024-06-20 16:25:01,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728303181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:01,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:01,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:01,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609531659] [2024-06-20 16:25:01,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:01,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:01,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:01,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:01,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:02,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:02,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 140 transitions, 1117 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:02,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:02,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:02,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:02,268 INFO L124 PetriNetUnfolderBase]: 414/796 cut-off events. [2024-06-20 16:25:02,269 INFO L125 PetriNetUnfolderBase]: For 108724/108724 co-relation queries the response was YES. [2024-06-20 16:25:02,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5855 conditions, 796 events. 414/796 cut-off events. For 108724/108724 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3940 event pairs, 96 based on Foata normal form. 10/804 useless extension candidates. Maximal degree in co-relation 5777. Up to 577 conditions per place. [2024-06-20 16:25:02,275 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 42 changer transitions 11/159 dead transitions. [2024-06-20 16:25:02,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 159 transitions, 1501 flow [2024-06-20 16:25:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 16:25:02,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-20 16:25:02,276 INFO L175 Difference]: Start difference. First operand has 192 places, 140 transitions, 1117 flow. Second operand 11 states and 131 transitions. [2024-06-20 16:25:02,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 159 transitions, 1501 flow [2024-06-20 16:25:02,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 159 transitions, 1420 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 16:25:02,395 INFO L231 Difference]: Finished difference. Result has 186 places, 137 transitions, 1098 flow [2024-06-20 16:25:02,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1098, PETRI_PLACES=186, PETRI_TRANSITIONS=137} [2024-06-20 16:25:02,396 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-20 16:25:02,396 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 137 transitions, 1098 flow [2024-06-20 16:25:02,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:02,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:02,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:02,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 16:25:02,396 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)] === [2024-06-20 16:25:02,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash -581973350, now seen corresponding path program 18 times [2024-06-20 16:25:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:02,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172016073] [2024-06-20 16:25:02,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:02,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:03,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:03,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172016073] [2024-06-20 16:25:03,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172016073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:03,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:03,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:03,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504656452] [2024-06-20 16:25:03,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:03,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:03,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:03,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:03,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 137 transitions, 1098 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:03,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:03,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:03,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:03,602 INFO L124 PetriNetUnfolderBase]: 406/784 cut-off events. [2024-06-20 16:25:03,602 INFO L125 PetriNetUnfolderBase]: For 98864/98864 co-relation queries the response was YES. [2024-06-20 16:25:03,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5670 conditions, 784 events. 406/784 cut-off events. For 98864/98864 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3889 event pairs, 94 based on Foata normal form. 10/792 useless extension candidates. Maximal degree in co-relation 5595. Up to 468 conditions per place. [2024-06-20 16:25:03,607 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 74 changer transitions 11/157 dead transitions. [2024-06-20 16:25:03,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 157 transitions, 1482 flow [2024-06-20 16:25:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 16:25:03,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 16:25:03,608 INFO L175 Difference]: Start difference. First operand has 186 places, 137 transitions, 1098 flow. Second operand 11 states and 133 transitions. [2024-06-20 16:25:03,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 157 transitions, 1482 flow [2024-06-20 16:25:03,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 157 transitions, 1394 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:03,757 INFO L231 Difference]: Finished difference. Result has 184 places, 134 transitions, 1138 flow [2024-06-20 16:25:03,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1138, PETRI_PLACES=184, PETRI_TRANSITIONS=134} [2024-06-20 16:25:03,757 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-20 16:25:03,757 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 134 transitions, 1138 flow [2024-06-20 16:25:03,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:03,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:03,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:03,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 16:25:03,758 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)] === [2024-06-20 16:25:03,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1356277166, now seen corresponding path program 19 times [2024-06-20 16:25:03,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:03,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060337120] [2024-06-20 16:25:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:03,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:04,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:04,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060337120] [2024-06-20 16:25:04,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060337120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:04,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:04,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:04,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986200904] [2024-06-20 16:25:04,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:04,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:04,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:04,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:04,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:04,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:04,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 134 transitions, 1138 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:04,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:04,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:04,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:04,982 INFO L124 PetriNetUnfolderBase]: 372/718 cut-off events. [2024-06-20 16:25:04,983 INFO L125 PetriNetUnfolderBase]: For 77356/77356 co-relation queries the response was YES. [2024-06-20 16:25:04,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4993 conditions, 718 events. 372/718 cut-off events. For 77356/77356 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3455 event pairs, 74 based on Foata normal form. 8/724 useless extension candidates. Maximal degree in co-relation 4919. Up to 509 conditions per place. [2024-06-20 16:25:04,988 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 98 selfloop transitions, 38 changer transitions 14/152 dead transitions. [2024-06-20 16:25:04,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 152 transitions, 1496 flow [2024-06-20 16:25:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:04,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 16:25:04,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-20 16:25:04,989 INFO L175 Difference]: Start difference. First operand has 184 places, 134 transitions, 1138 flow. Second operand 11 states and 128 transitions. [2024-06-20 16:25:04,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 152 transitions, 1496 flow [2024-06-20 16:25:05,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 152 transitions, 1344 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:05,093 INFO L231 Difference]: Finished difference. Result has 182 places, 129 transitions, 1030 flow [2024-06-20 16:25:05,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1030, PETRI_PLACES=182, PETRI_TRANSITIONS=129} [2024-06-20 16:25:05,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-20 16:25:05,093 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 129 transitions, 1030 flow [2024-06-20 16:25:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:05,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:05,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:05,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 16:25:05,094 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)] === [2024-06-20 16:25:05,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1886476416, now seen corresponding path program 20 times [2024-06-20 16:25:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971521091] [2024-06-20 16:25:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:05,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:05,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:05,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:05,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971521091] [2024-06-20 16:25:05,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971521091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:05,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:05,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564769801] [2024-06-20 16:25:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:05,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:05,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:05,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:05,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:05,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:05,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 129 transitions, 1030 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:05,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:05,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:05,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:06,194 INFO L124 PetriNetUnfolderBase]: 366/708 cut-off events. [2024-06-20 16:25:06,194 INFO L125 PetriNetUnfolderBase]: For 78418/78418 co-relation queries the response was YES. [2024-06-20 16:25:06,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4822 conditions, 708 events. 366/708 cut-off events. For 78418/78418 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3387 event pairs, 76 based on Foata normal form. 10/716 useless extension candidates. Maximal degree in co-relation 4749. Up to 494 conditions per place. [2024-06-20 16:25:06,199 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 45 changer transitions 11/148 dead transitions. [2024-06-20 16:25:06,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 148 transitions, 1392 flow [2024-06-20 16:25:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 16:25:06,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-20 16:25:06,200 INFO L175 Difference]: Start difference. First operand has 182 places, 129 transitions, 1030 flow. Second operand 11 states and 130 transitions. [2024-06-20 16:25:06,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 148 transitions, 1392 flow [2024-06-20 16:25:06,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 148 transitions, 1308 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:06,298 INFO L231 Difference]: Finished difference. Result has 176 places, 126 transitions, 1014 flow [2024-06-20 16:25:06,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1014, PETRI_PLACES=176, PETRI_TRANSITIONS=126} [2024-06-20 16:25:06,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-20 16:25:06,299 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 126 transitions, 1014 flow [2024-06-20 16:25:06,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:06,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:06,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:06,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 16:25:06,300 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)] === [2024-06-20 16:25:06,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:06,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2134990506, now seen corresponding path program 21 times [2024-06-20 16:25:06,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:06,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615229380] [2024-06-20 16:25:06,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:06,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:07,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:07,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615229380] [2024-06-20 16:25:07,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615229380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:07,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:07,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:07,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280021353] [2024-06-20 16:25:07,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:07,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:07,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:07,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:07,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:07,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:07,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 126 transitions, 1014 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:07,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:07,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:07,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:07,735 INFO L124 PetriNetUnfolderBase]: 358/696 cut-off events. [2024-06-20 16:25:07,735 INFO L125 PetriNetUnfolderBase]: For 67502/67502 co-relation queries the response was YES. [2024-06-20 16:25:07,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 696 events. 358/696 cut-off events. For 67502/67502 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3330 event pairs, 70 based on Foata normal form. 8/702 useless extension candidates. Maximal degree in co-relation 4587. Up to 437 conditions per place. [2024-06-20 16:25:07,740 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 76 selfloop transitions, 54 changer transitions 14/146 dead transitions. [2024-06-20 16:25:07,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 146 transitions, 1367 flow [2024-06-20 16:25:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:07,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 16:25:07,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-20 16:25:07,741 INFO L175 Difference]: Start difference. First operand has 176 places, 126 transitions, 1014 flow. Second operand 11 states and 128 transitions. [2024-06-20 16:25:07,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 146 transitions, 1367 flow [2024-06-20 16:25:07,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 146 transitions, 1273 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:07,828 INFO L231 Difference]: Finished difference. Result has 175 places, 122 transitions, 1003 flow [2024-06-20 16:25:07,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1003, PETRI_PLACES=175, PETRI_TRANSITIONS=122} [2024-06-20 16:25:07,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-20 16:25:07,829 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 122 transitions, 1003 flow [2024-06-20 16:25:07,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:07,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:07,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:07,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 16:25:07,829 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)] === [2024-06-20 16:25:07,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:07,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1991099976, now seen corresponding path program 22 times [2024-06-20 16:25:07,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:07,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703196011] [2024-06-20 16:25:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:07,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:08,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:08,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703196011] [2024-06-20 16:25:08,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703196011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:08,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:08,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:08,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129173508] [2024-06-20 16:25:08,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:08,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:08,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:08,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 122 transitions, 1003 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:08,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:08,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:08,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:09,065 INFO L124 PetriNetUnfolderBase]: 353/685 cut-off events. [2024-06-20 16:25:09,065 INFO L125 PetriNetUnfolderBase]: For 65204/65204 co-relation queries the response was YES. [2024-06-20 16:25:09,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 685 events. 353/685 cut-off events. For 65204/65204 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3272 event pairs, 72 based on Foata normal form. 8/691 useless extension candidates. Maximal degree in co-relation 4539. Up to 481 conditions per place. [2024-06-20 16:25:09,069 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 41 changer transitions 13/141 dead transitions. [2024-06-20 16:25:09,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 141 transitions, 1344 flow [2024-06-20 16:25:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 16:25:09,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 16:25:09,070 INFO L175 Difference]: Start difference. First operand has 175 places, 122 transitions, 1003 flow. Second operand 11 states and 126 transitions. [2024-06-20 16:25:09,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 141 transitions, 1344 flow [2024-06-20 16:25:09,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 141 transitions, 1224 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:09,153 INFO L231 Difference]: Finished difference. Result has 170 places, 119 transitions, 946 flow [2024-06-20 16:25:09,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=946, PETRI_PLACES=170, PETRI_TRANSITIONS=119} [2024-06-20 16:25:09,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-20 16:25:09,154 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 119 transitions, 946 flow [2024-06-20 16:25:09,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:09,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:09,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:09,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 16:25:09,155 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)] === [2024-06-20 16:25:09,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash 524873350, now seen corresponding path program 23 times [2024-06-20 16:25:09,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:09,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362492815] [2024-06-20 16:25:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:10,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:10,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:10,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362492815] [2024-06-20 16:25:10,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362492815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:10,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:10,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:10,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105960522] [2024-06-20 16:25:10,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:10,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:10,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:10,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:10,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:10,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:10,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 119 transitions, 946 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:10,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:10,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:10,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:10,731 INFO L124 PetriNetUnfolderBase]: 342/664 cut-off events. [2024-06-20 16:25:10,731 INFO L125 PetriNetUnfolderBase]: For 60736/60736 co-relation queries the response was YES. [2024-06-20 16:25:10,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4289 conditions, 664 events. 342/664 cut-off events. For 60736/60736 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3163 event pairs, 79 based on Foata normal form. 10/672 useless extension candidates. Maximal degree in co-relation 4221. Up to 475 conditions per place. [2024-06-20 16:25:10,735 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 35 changer transitions 11/138 dead transitions. [2024-06-20 16:25:10,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 138 transitions, 1286 flow [2024-06-20 16:25:10,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:10,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 16:25:10,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 16:25:10,736 INFO L175 Difference]: Start difference. First operand has 170 places, 119 transitions, 946 flow. Second operand 11 states and 126 transitions. [2024-06-20 16:25:10,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 138 transitions, 1286 flow [2024-06-20 16:25:10,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 138 transitions, 1198 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:10,810 INFO L231 Difference]: Finished difference. Result has 166 places, 116 transitions, 906 flow [2024-06-20 16:25:10,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=906, PETRI_PLACES=166, PETRI_TRANSITIONS=116} [2024-06-20 16:25:10,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-20 16:25:10,810 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 116 transitions, 906 flow [2024-06-20 16:25:10,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:10,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:10,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:10,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 16:25:10,811 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)] === [2024-06-20 16:25:10,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:10,811 INFO L85 PathProgramCache]: Analyzing trace with hash -931246746, now seen corresponding path program 1 times [2024-06-20 16:25:10,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:10,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562981494] [2024-06-20 16:25:10,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:10,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:11,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:11,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562981494] [2024-06-20 16:25:11,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562981494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:11,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:11,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:11,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774940145] [2024-06-20 16:25:11,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:11,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:11,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:11,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:11,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 116 transitions, 906 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:11,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:11,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:11,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:12,159 INFO L124 PetriNetUnfolderBase]: 325/629 cut-off events. [2024-06-20 16:25:12,160 INFO L125 PetriNetUnfolderBase]: For 47681/47681 co-relation queries the response was YES. [2024-06-20 16:25:12,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4099 conditions, 629 events. 325/629 cut-off events. For 47681/47681 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2913 event pairs, 68 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 4033. Up to 447 conditions per place. [2024-06-20 16:25:12,164 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 40 changer transitions 0/133 dead transitions. [2024-06-20 16:25:12,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 133 transitions, 1223 flow [2024-06-20 16:25:12,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-20 16:25:12,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-20 16:25:12,165 INFO L175 Difference]: Start difference. First operand has 166 places, 116 transitions, 906 flow. Second operand 10 states and 114 transitions. [2024-06-20 16:25:12,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 133 transitions, 1223 flow [2024-06-20 16:25:12,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 133 transitions, 1149 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:12,230 INFO L231 Difference]: Finished difference. Result has 164 places, 119 transitions, 967 flow [2024-06-20 16:25:12,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=967, PETRI_PLACES=164, PETRI_TRANSITIONS=119} [2024-06-20 16:25:12,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-20 16:25:12,231 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 119 transitions, 967 flow [2024-06-20 16:25:12,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:12,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:12,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:12,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 16:25:12,231 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)] === [2024-06-20 16:25:12,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:12,232 INFO L85 PathProgramCache]: Analyzing trace with hash -443450780, now seen corresponding path program 24 times [2024-06-20 16:25:12,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:12,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28026664] [2024-06-20 16:25:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:12,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:13,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:13,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28026664] [2024-06-20 16:25:13,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28026664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:13,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:13,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:13,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558052839] [2024-06-20 16:25:13,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:13,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:13,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:13,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:13,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 119 transitions, 967 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:13,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:13,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:13,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:13,704 INFO L124 PetriNetUnfolderBase]: 315/611 cut-off events. [2024-06-20 16:25:13,704 INFO L125 PetriNetUnfolderBase]: For 43090/43090 co-relation queries the response was YES. [2024-06-20 16:25:13,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 611 events. 315/611 cut-off events. For 43090/43090 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2805 event pairs, 57 based on Foata normal form. 8/617 useless extension candidates. Maximal degree in co-relation 3607. Up to 432 conditions per place. [2024-06-20 16:25:13,707 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 89 selfloop transitions, 29 changer transitions 17/137 dead transitions. [2024-06-20 16:25:13,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 137 transitions, 1295 flow [2024-06-20 16:25:13,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 16:25:13,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-20 16:25:13,709 INFO L175 Difference]: Start difference. First operand has 164 places, 119 transitions, 967 flow. Second operand 11 states and 123 transitions. [2024-06-20 16:25:13,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 137 transitions, 1295 flow [2024-06-20 16:25:13,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 137 transitions, 1233 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 16:25:13,783 INFO L231 Difference]: Finished difference. Result has 168 places, 112 transitions, 920 flow [2024-06-20 16:25:13,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=920, PETRI_PLACES=168, PETRI_TRANSITIONS=112} [2024-06-20 16:25:13,783 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-20 16:25:13,784 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 112 transitions, 920 flow [2024-06-20 16:25:13,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:13,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:13,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:13,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 16:25:13,784 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)] === [2024-06-20 16:25:13,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash 689781748, now seen corresponding path program 25 times [2024-06-20 16:25:13,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:13,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047074560] [2024-06-20 16:25:13,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:13,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:14,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:14,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047074560] [2024-06-20 16:25:14,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047074560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:14,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:14,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176132303] [2024-06-20 16:25:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:14,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:14,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:14,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:14,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:14,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 112 transitions, 920 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:14,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:14,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:14,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:15,002 INFO L124 PetriNetUnfolderBase]: 338/656 cut-off events. [2024-06-20 16:25:15,002 INFO L125 PetriNetUnfolderBase]: For 58956/58956 co-relation queries the response was YES. [2024-06-20 16:25:15,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4349 conditions, 656 events. 338/656 cut-off events. For 58956/58956 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3069 event pairs, 66 based on Foata normal form. 8/662 useless extension candidates. Maximal degree in co-relation 4282. Up to 380 conditions per place. [2024-06-20 16:25:15,007 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 56 changer transitions 7/139 dead transitions. [2024-06-20 16:25:15,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 139 transitions, 1414 flow [2024-06-20 16:25:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-20 16:25:15,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-20 16:25:15,009 INFO L175 Difference]: Start difference. First operand has 168 places, 112 transitions, 920 flow. Second operand 11 states and 136 transitions. [2024-06-20 16:25:15,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 139 transitions, 1414 flow [2024-06-20 16:25:15,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 139 transitions, 1332 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:15,115 INFO L231 Difference]: Finished difference. Result has 157 places, 112 transitions, 962 flow [2024-06-20 16:25:15,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=962, PETRI_PLACES=157, PETRI_TRANSITIONS=112} [2024-06-20 16:25:15,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-20 16:25:15,116 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 112 transitions, 962 flow [2024-06-20 16:25:15,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:15,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:15,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:15,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 16:25:15,116 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)] === [2024-06-20 16:25:15,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:15,117 INFO L85 PathProgramCache]: Analyzing trace with hash -967508560, now seen corresponding path program 26 times [2024-06-20 16:25:15,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:15,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818912059] [2024-06-20 16:25:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:15,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:16,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:16,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818912059] [2024-06-20 16:25:16,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818912059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:16,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:16,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:16,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255330738] [2024-06-20 16:25:16,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:16,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:16,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:16,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:16,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:16,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:16,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 112 transitions, 962 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:16,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:16,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:16,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:16,451 INFO L124 PetriNetUnfolderBase]: 361/705 cut-off events. [2024-06-20 16:25:16,451 INFO L125 PetriNetUnfolderBase]: For 59834/59834 co-relation queries the response was YES. [2024-06-20 16:25:16,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4868 conditions, 705 events. 361/705 cut-off events. For 59834/59834 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3420 event pairs, 85 based on Foata normal form. 8/711 useless extension candidates. Maximal degree in co-relation 4806. Up to 493 conditions per place. [2024-06-20 16:25:16,455 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 89 selfloop transitions, 38 changer transitions 7/136 dead transitions. [2024-06-20 16:25:16,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 136 transitions, 1420 flow [2024-06-20 16:25:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 16:25:16,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:25:16,456 INFO L175 Difference]: Start difference. First operand has 157 places, 112 transitions, 962 flow. Second operand 11 states and 132 transitions. [2024-06-20 16:25:16,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 136 transitions, 1420 flow [2024-06-20 16:25:16,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 136 transitions, 1333 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:16,527 INFO L231 Difference]: Finished difference. Result has 158 places, 110 transitions, 938 flow [2024-06-20 16:25:16,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=938, PETRI_PLACES=158, PETRI_TRANSITIONS=110} [2024-06-20 16:25:16,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-20 16:25:16,527 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 110 transitions, 938 flow [2024-06-20 16:25:16,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:16,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:16,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:16,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 16:25:16,529 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)] === [2024-06-20 16:25:16,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:16,530 INFO L85 PathProgramCache]: Analyzing trace with hash 695149708, now seen corresponding path program 27 times [2024-06-20 16:25:16,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:16,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309206803] [2024-06-20 16:25:16,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:16,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:17,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:17,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:17,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309206803] [2024-06-20 16:25:17,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309206803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:17,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:17,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:17,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248570837] [2024-06-20 16:25:17,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:17,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:17,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:17,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:17,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:17,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:17,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 110 transitions, 938 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:17,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:17,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:17,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:17,697 INFO L124 PetriNetUnfolderBase]: 330/644 cut-off events. [2024-06-20 16:25:17,697 INFO L125 PetriNetUnfolderBase]: For 50793/50793 co-relation queries the response was YES. [2024-06-20 16:25:17,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 644 events. 330/644 cut-off events. For 50793/50793 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3040 event pairs, 76 based on Foata normal form. 10/652 useless extension candidates. Maximal degree in co-relation 4108. Up to 493 conditions per place. [2024-06-20 16:25:17,702 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 78 selfloop transitions, 34 changer transitions 15/129 dead transitions. [2024-06-20 16:25:17,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 129 transitions, 1260 flow [2024-06-20 16:25:17,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:17,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 16:25:17,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 16:25:17,704 INFO L175 Difference]: Start difference. First operand has 158 places, 110 transitions, 938 flow. Second operand 11 states and 126 transitions. [2024-06-20 16:25:17,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 129 transitions, 1260 flow [2024-06-20 16:25:17,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 129 transitions, 1158 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:17,773 INFO L231 Difference]: Finished difference. Result has 157 places, 105 transitions, 860 flow [2024-06-20 16:25:17,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=860, PETRI_PLACES=157, PETRI_TRANSITIONS=105} [2024-06-20 16:25:17,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-20 16:25:17,773 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 105 transitions, 860 flow [2024-06-20 16:25:17,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:17,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:17,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:17,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 16:25:17,774 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)] === [2024-06-20 16:25:17,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:17,774 INFO L85 PathProgramCache]: Analyzing trace with hash 896708174, now seen corresponding path program 2 times [2024-06-20 16:25:17,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:17,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138865435] [2024-06-20 16:25:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:17,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:18,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:18,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138865435] [2024-06-20 16:25:18,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138865435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:18,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:18,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:18,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779875052] [2024-06-20 16:25:18,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:18,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:18,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:18,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 105 transitions, 860 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:18,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:18,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:18,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:19,104 INFO L124 PetriNetUnfolderBase]: 308/598 cut-off events. [2024-06-20 16:25:19,104 INFO L125 PetriNetUnfolderBase]: For 40073/40073 co-relation queries the response was YES. [2024-06-20 16:25:19,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3928 conditions, 598 events. 308/598 cut-off events. For 40073/40073 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2725 event pairs, 74 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 3868. Up to 521 conditions per place. [2024-06-20 16:25:19,107 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-06-20 16:25:19,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 120 transitions, 1144 flow [2024-06-20 16:25:19,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:19,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:19,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-20 16:25:19,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 16:25:19,109 INFO L175 Difference]: Start difference. First operand has 157 places, 105 transitions, 860 flow. Second operand 10 states and 115 transitions. [2024-06-20 16:25:19,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 120 transitions, 1144 flow [2024-06-20 16:25:19,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 120 transitions, 1067 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:19,167 INFO L231 Difference]: Finished difference. Result has 149 places, 106 transitions, 849 flow [2024-06-20 16:25:19,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=849, PETRI_PLACES=149, PETRI_TRANSITIONS=106} [2024-06-20 16:25:19,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-20 16:25:19,167 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 106 transitions, 849 flow [2024-06-20 16:25:19,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:19,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:19,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:19,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 16:25:19,168 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)] === [2024-06-20 16:25:19,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1721814194, now seen corresponding path program 3 times [2024-06-20 16:25:19,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:19,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907060350] [2024-06-20 16:25:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:19,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:20,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:20,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907060350] [2024-06-20 16:25:20,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907060350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:20,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:20,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:20,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820652872] [2024-06-20 16:25:20,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:20,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:20,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:20,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:20,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 106 transitions, 849 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:20,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:20,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:20,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:20,594 INFO L124 PetriNetUnfolderBase]: 318/616 cut-off events. [2024-06-20 16:25:20,594 INFO L125 PetriNetUnfolderBase]: For 38541/38541 co-relation queries the response was YES. [2024-06-20 16:25:20,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 616 events. 318/616 cut-off events. For 38541/38541 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2829 event pairs, 78 based on Foata normal form. 2/616 useless extension candidates. Maximal degree in co-relation 3912. Up to 550 conditions per place. [2024-06-20 16:25:20,598 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 24 changer transitions 0/123 dead transitions. [2024-06-20 16:25:20,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 123 transitions, 1165 flow [2024-06-20 16:25:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:20,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-20 16:25:20,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-20 16:25:20,599 INFO L175 Difference]: Start difference. First operand has 149 places, 106 transitions, 849 flow. Second operand 10 states and 112 transitions. [2024-06-20 16:25:20,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 123 transitions, 1165 flow [2024-06-20 16:25:20,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 123 transitions, 1105 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:20,653 INFO L231 Difference]: Finished difference. Result has 151 places, 109 transitions, 881 flow [2024-06-20 16:25:20,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=881, PETRI_PLACES=151, PETRI_TRANSITIONS=109} [2024-06-20 16:25:20,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-20 16:25:20,659 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 109 transitions, 881 flow [2024-06-20 16:25:20,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:20,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:20,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:20,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 16:25:20,659 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)] === [2024-06-20 16:25:20,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:20,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1466243506, now seen corresponding path program 4 times [2024-06-20 16:25:20,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:20,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287352731] [2024-06-20 16:25:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:20,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:21,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:21,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287352731] [2024-06-20 16:25:21,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287352731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:21,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:21,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:21,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414405252] [2024-06-20 16:25:21,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:21,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:21,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:21,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:21,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:21,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:21,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 109 transitions, 881 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:21,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:21,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:21,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:21,751 INFO L124 PetriNetUnfolderBase]: 322/624 cut-off events. [2024-06-20 16:25:21,752 INFO L125 PetriNetUnfolderBase]: For 40205/40205 co-relation queries the response was YES. [2024-06-20 16:25:21,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 624 events. 322/624 cut-off events. For 40205/40205 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2870 event pairs, 82 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 3978. Up to 573 conditions per place. [2024-06-20 16:25:21,755 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2024-06-20 16:25:21,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 123 transitions, 1171 flow [2024-06-20 16:25:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 16:25:21,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-20 16:25:21,757 INFO L175 Difference]: Start difference. First operand has 151 places, 109 transitions, 881 flow. Second operand 10 states and 109 transitions. [2024-06-20 16:25:21,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 123 transitions, 1171 flow [2024-06-20 16:25:21,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 123 transitions, 1100 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-20 16:25:21,822 INFO L231 Difference]: Finished difference. Result has 154 places, 110 transitions, 875 flow [2024-06-20 16:25:21,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=875, PETRI_PLACES=154, PETRI_TRANSITIONS=110} [2024-06-20 16:25:21,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-20 16:25:21,823 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 110 transitions, 875 flow [2024-06-20 16:25:21,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:21,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:21,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:21,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 16:25:21,823 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)] === [2024-06-20 16:25:21,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:21,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1722029520, now seen corresponding path program 28 times [2024-06-20 16:25:21,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:21,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079256017] [2024-06-20 16:25:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:21,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:22,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:22,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:22,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079256017] [2024-06-20 16:25:22,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079256017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:22,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:22,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:22,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480337357] [2024-06-20 16:25:22,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:22,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:22,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:22,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:22,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:22,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 110 transitions, 875 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:22,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:22,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:22,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:23,224 INFO L124 PetriNetUnfolderBase]: 363/711 cut-off events. [2024-06-20 16:25:23,224 INFO L125 PetriNetUnfolderBase]: For 59764/59764 co-relation queries the response was YES. [2024-06-20 16:25:23,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4795 conditions, 711 events. 363/711 cut-off events. For 59764/59764 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3477 event pairs, 93 based on Foata normal form. 8/717 useless extension candidates. Maximal degree in co-relation 4735. Up to 496 conditions per place. [2024-06-20 16:25:23,228 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 33 changer transitions 7/134 dead transitions. [2024-06-20 16:25:23,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 134 transitions, 1329 flow [2024-06-20 16:25:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 16:25:23,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-20 16:25:23,229 INFO L175 Difference]: Start difference. First operand has 154 places, 110 transitions, 875 flow. Second operand 11 states and 130 transitions. [2024-06-20 16:25:23,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 134 transitions, 1329 flow [2024-06-20 16:25:23,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 134 transitions, 1276 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:23,290 INFO L231 Difference]: Finished difference. Result has 157 places, 108 transitions, 875 flow [2024-06-20 16:25:23,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=875, PETRI_PLACES=157, PETRI_TRANSITIONS=108} [2024-06-20 16:25:23,290 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-20 16:25:23,290 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 108 transitions, 875 flow [2024-06-20 16:25:23,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:23,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:23,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:23,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 16:25:23,291 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)] === [2024-06-20 16:25:23,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:23,291 INFO L85 PathProgramCache]: Analyzing trace with hash 689787328, now seen corresponding path program 29 times [2024-06-20 16:25:23,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:23,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081608274] [2024-06-20 16:25:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:24,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:24,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081608274] [2024-06-20 16:25:24,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081608274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:24,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:24,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:24,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301305827] [2024-06-20 16:25:24,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:24,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:24,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:24,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:24,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 108 transitions, 875 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:24,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:24,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:24,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:24,564 INFO L124 PetriNetUnfolderBase]: 332/650 cut-off events. [2024-06-20 16:25:24,564 INFO L125 PetriNetUnfolderBase]: For 52831/52831 co-relation queries the response was YES. [2024-06-20 16:25:24,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4166 conditions, 650 events. 332/650 cut-off events. For 52831/52831 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3084 event pairs, 78 based on Foata normal form. 10/658 useless extension candidates. Maximal degree in co-relation 4105. Up to 475 conditions per place. [2024-06-20 16:25:24,569 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 38 changer transitions 13/128 dead transitions. [2024-06-20 16:25:24,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 128 transitions, 1199 flow [2024-06-20 16:25:24,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:24,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 16:25:24,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 16:25:24,570 INFO L175 Difference]: Start difference. First operand has 157 places, 108 transitions, 875 flow. Second operand 11 states and 127 transitions. [2024-06-20 16:25:24,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 128 transitions, 1199 flow [2024-06-20 16:25:24,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 128 transitions, 1135 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:24,646 INFO L231 Difference]: Finished difference. Result has 156 places, 104 transitions, 861 flow [2024-06-20 16:25:24,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=861, PETRI_PLACES=156, PETRI_TRANSITIONS=104} [2024-06-20 16:25:24,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-20 16:25:24,647 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 104 transitions, 861 flow [2024-06-20 16:25:24,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:24,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:24,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:24,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 16:25:24,647 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)] === [2024-06-20 16:25:24,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash 689637598, now seen corresponding path program 30 times [2024-06-20 16:25:24,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:24,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45418284] [2024-06-20 16:25:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:24,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:25,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:25,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45418284] [2024-06-20 16:25:25,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45418284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:25,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:25,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:25,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494995991] [2024-06-20 16:25:25,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:25,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:25,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:25,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:25,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:25,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 104 transitions, 861 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:25,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:25,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:25,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:26,050 INFO L124 PetriNetUnfolderBase]: 370/732 cut-off events. [2024-06-20 16:25:26,050 INFO L125 PetriNetUnfolderBase]: For 66247/66247 co-relation queries the response was YES. [2024-06-20 16:25:26,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5189 conditions, 732 events. 370/732 cut-off events. For 66247/66247 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3651 event pairs, 88 based on Foata normal form. 8/738 useless extension candidates. Maximal degree in co-relation 5129. Up to 293 conditions per place. [2024-06-20 16:25:26,055 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 77 selfloop transitions, 42 changer transitions 12/133 dead transitions. [2024-06-20 16:25:26,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 133 transitions, 1353 flow [2024-06-20 16:25:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 16:25:26,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 16:25:26,056 INFO L175 Difference]: Start difference. First operand has 156 places, 104 transitions, 861 flow. Second operand 11 states and 133 transitions. [2024-06-20 16:25:26,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 133 transitions, 1353 flow [2024-06-20 16:25:26,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 133 transitions, 1265 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:26,118 INFO L231 Difference]: Finished difference. Result has 152 places, 101 transitions, 871 flow [2024-06-20 16:25:26,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=871, PETRI_PLACES=152, PETRI_TRANSITIONS=101} [2024-06-20 16:25:26,119 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-20 16:25:26,119 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 101 transitions, 871 flow [2024-06-20 16:25:26,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:26,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:26,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:26,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 16:25:26,120 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)] === [2024-06-20 16:25:26,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 889089118, now seen corresponding path program 31 times [2024-06-20 16:25:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:26,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817292006] [2024-06-20 16:25:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:26,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:26,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:26,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817292006] [2024-06-20 16:25:26,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817292006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:26,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954752390] [2024-06-20 16:25:26,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:26,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:26,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:26,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:26,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:26,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 101 transitions, 871 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:26,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:26,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:26,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:27,240 INFO L124 PetriNetUnfolderBase]: 362/716 cut-off events. [2024-06-20 16:25:27,240 INFO L125 PetriNetUnfolderBase]: For 63351/63351 co-relation queries the response was YES. [2024-06-20 16:25:27,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5086 conditions, 716 events. 362/716 cut-off events. For 63351/63351 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3551 event pairs, 108 based on Foata normal form. 10/724 useless extension candidates. Maximal degree in co-relation 5027. Up to 551 conditions per place. [2024-06-20 16:25:27,245 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 36 changer transitions 11/122 dead transitions. [2024-06-20 16:25:27,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 122 transitions, 1187 flow [2024-06-20 16:25:27,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:27,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 16:25:27,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:25:27,246 INFO L175 Difference]: Start difference. First operand has 152 places, 101 transitions, 871 flow. Second operand 11 states and 132 transitions. [2024-06-20 16:25:27,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 122 transitions, 1187 flow [2024-06-20 16:25:27,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 122 transitions, 1131 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:27,299 INFO L231 Difference]: Finished difference. Result has 146 places, 98 transitions, 861 flow [2024-06-20 16:25:27,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=861, PETRI_PLACES=146, PETRI_TRANSITIONS=98} [2024-06-20 16:25:27,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-20 16:25:27,299 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 98 transitions, 861 flow [2024-06-20 16:25:27,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:27,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:27,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 16:25:27,300 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)] === [2024-06-20 16:25:27,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash 889083538, now seen corresponding path program 32 times [2024-06-20 16:25:27,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:27,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102794204] [2024-06-20 16:25:27,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:28,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:28,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102794204] [2024-06-20 16:25:28,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102794204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:28,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:28,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254430319] [2024-06-20 16:25:28,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:28,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:28,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:28,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:28,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 98 transitions, 861 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:28,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:28,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:28,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:28,564 INFO L124 PetriNetUnfolderBase]: 350/696 cut-off events. [2024-06-20 16:25:28,564 INFO L125 PetriNetUnfolderBase]: For 51204/51204 co-relation queries the response was YES. [2024-06-20 16:25:28,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4828 conditions, 696 events. 350/696 cut-off events. For 51204/51204 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3422 event pairs, 98 based on Foata normal form. 8/702 useless extension candidates. Maximal degree in co-relation 4773. Up to 470 conditions per place. [2024-06-20 16:25:28,568 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 34 changer transitions 8/123 dead transitions. [2024-06-20 16:25:28,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 123 transitions, 1285 flow [2024-06-20 16:25:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 16:25:28,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 16:25:28,570 INFO L175 Difference]: Start difference. First operand has 146 places, 98 transitions, 861 flow. Second operand 11 states and 134 transitions. [2024-06-20 16:25:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 123 transitions, 1285 flow [2024-06-20 16:25:28,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 123 transitions, 1205 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:28,610 INFO L231 Difference]: Finished difference. Result has 144 places, 95 transitions, 826 flow [2024-06-20 16:25:28,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=826, PETRI_PLACES=144, PETRI_TRANSITIONS=95} [2024-06-20 16:25:28,610 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-20 16:25:28,610 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 95 transitions, 826 flow [2024-06-20 16:25:28,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:28,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:28,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:28,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 16:25:28,611 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)] === [2024-06-20 16:25:28,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:28,611 INFO L85 PathProgramCache]: Analyzing trace with hash 889290928, now seen corresponding path program 33 times [2024-06-20 16:25:28,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:28,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867255673] [2024-06-20 16:25:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:28,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:29,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:29,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:29,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867255673] [2024-06-20 16:25:29,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867255673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:29,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:29,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:29,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443128569] [2024-06-20 16:25:29,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:29,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:29,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:29,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:29,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:29,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 95 transitions, 826 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:29,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:29,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:29,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:30,098 INFO L124 PetriNetUnfolderBase]: 347/691 cut-off events. [2024-06-20 16:25:30,098 INFO L125 PetriNetUnfolderBase]: For 50557/50557 co-relation queries the response was YES. [2024-06-20 16:25:30,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4741 conditions, 691 events. 347/691 cut-off events. For 50557/50557 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3407 event pairs, 110 based on Foata normal form. 10/699 useless extension candidates. Maximal degree in co-relation 4687. Up to 569 conditions per place. [2024-06-20 16:25:30,102 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 81 selfloop transitions, 22 changer transitions 11/116 dead transitions. [2024-06-20 16:25:30,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 116 transitions, 1130 flow [2024-06-20 16:25:30,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:30,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 16:25:30,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 16:25:30,104 INFO L175 Difference]: Start difference. First operand has 144 places, 95 transitions, 826 flow. Second operand 11 states and 129 transitions. [2024-06-20 16:25:30,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 116 transitions, 1130 flow [2024-06-20 16:25:30,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 116 transitions, 1060 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:30,146 INFO L231 Difference]: Finished difference. Result has 141 places, 92 transitions, 767 flow [2024-06-20 16:25:30,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=767, PETRI_PLACES=141, PETRI_TRANSITIONS=92} [2024-06-20 16:25:30,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-20 16:25:30,147 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 92 transitions, 767 flow [2024-06-20 16:25:30,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:30,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:30,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:30,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 16:25:30,148 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)] === [2024-06-20 16:25:30,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash 889298864, now seen corresponding path program 5 times [2024-06-20 16:25:30,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:30,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282807663] [2024-06-20 16:25:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:30,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:31,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:31,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282807663] [2024-06-20 16:25:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282807663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:31,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:31,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:31,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264751052] [2024-06-20 16:25:31,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:31,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:31,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:31,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:31,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 92 transitions, 767 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:31,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:31,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:31,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:31,635 INFO L124 PetriNetUnfolderBase]: 325/649 cut-off events. [2024-06-20 16:25:31,636 INFO L125 PetriNetUnfolderBase]: For 40305/40305 co-relation queries the response was YES. [2024-06-20 16:25:31,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 649 events. 325/649 cut-off events. For 40305/40305 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3120 event pairs, 102 based on Foata normal form. 2/649 useless extension candidates. Maximal degree in co-relation 4401. Up to 554 conditions per place. [2024-06-20 16:25:31,640 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 27 changer transitions 0/108 dead transitions. [2024-06-20 16:25:31,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 108 transitions, 1037 flow [2024-06-20 16:25:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-20 16:25:31,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-20 16:25:31,641 INFO L175 Difference]: Start difference. First operand has 141 places, 92 transitions, 767 flow. Second operand 10 states and 116 transitions. [2024-06-20 16:25:31,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 108 transitions, 1037 flow [2024-06-20 16:25:31,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 108 transitions, 989 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:31,677 INFO L231 Difference]: Finished difference. Result has 138 places, 93 transitions, 797 flow [2024-06-20 16:25:31,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=797, PETRI_PLACES=138, PETRI_TRANSITIONS=93} [2024-06-20 16:25:31,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-20 16:25:31,683 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 93 transitions, 797 flow [2024-06-20 16:25:31,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:31,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:31,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:31,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 16:25:31,683 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)] === [2024-06-20 16:25:31,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:31,684 INFO L85 PathProgramCache]: Analyzing trace with hash 896440768, now seen corresponding path program 34 times [2024-06-20 16:25:31,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:31,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670503866] [2024-06-20 16:25:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:31,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:32,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:32,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670503866] [2024-06-20 16:25:32,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670503866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:32,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:32,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:32,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925503227] [2024-06-20 16:25:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:32,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:32,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:32,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:32,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:32,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:32,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 93 transitions, 797 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:32,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:32,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:32,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:33,090 INFO L124 PetriNetUnfolderBase]: 312/626 cut-off events. [2024-06-20 16:25:33,090 INFO L125 PetriNetUnfolderBase]: For 36961/36961 co-relation queries the response was YES. [2024-06-20 16:25:33,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 626 events. 312/626 cut-off events. For 36961/36961 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2983 event pairs, 89 based on Foata normal form. 10/634 useless extension candidates. Maximal degree in co-relation 3933. Up to 504 conditions per place. [2024-06-20 16:25:33,094 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 21 changer transitions 11/113 dead transitions. [2024-06-20 16:25:33,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 113 transitions, 1091 flow [2024-06-20 16:25:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 16:25:33,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-20 16:25:33,096 INFO L175 Difference]: Start difference. First operand has 138 places, 93 transitions, 797 flow. Second operand 11 states and 126 transitions. [2024-06-20 16:25:33,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 113 transitions, 1091 flow [2024-06-20 16:25:33,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 113 transitions, 1023 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:33,137 INFO L231 Difference]: Finished difference. Result has 141 places, 90 transitions, 738 flow [2024-06-20 16:25:33,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=738, PETRI_PLACES=141, PETRI_TRANSITIONS=90} [2024-06-20 16:25:33,138 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-20 16:25:33,138 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 90 transitions, 738 flow [2024-06-20 16:25:33,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:33,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:33,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:33,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 16:25:33,138 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)] === [2024-06-20 16:25:33,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash 896717474, now seen corresponding path program 6 times [2024-06-20 16:25:33,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:33,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613426592] [2024-06-20 16:25:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:33,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:34,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:34,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613426592] [2024-06-20 16:25:34,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613426592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:34,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:34,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:34,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064265860] [2024-06-20 16:25:34,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:34,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:34,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:34,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:34,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:34,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 90 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:34,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:34,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:34,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:34,521 INFO L124 PetriNetUnfolderBase]: 290/584 cut-off events. [2024-06-20 16:25:34,521 INFO L125 PetriNetUnfolderBase]: For 32835/32835 co-relation queries the response was YES. [2024-06-20 16:25:34,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3815 conditions, 584 events. 290/584 cut-off events. For 32835/32835 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2720 event pairs, 87 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3763. Up to 486 conditions per place. [2024-06-20 16:25:34,524 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 24 changer transitions 0/105 dead transitions. [2024-06-20 16:25:34,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 105 transitions, 998 flow [2024-06-20 16:25:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:34,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:34,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 16:25:34,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-20 16:25:34,525 INFO L175 Difference]: Start difference. First operand has 141 places, 90 transitions, 738 flow. Second operand 10 states and 113 transitions. [2024-06-20 16:25:34,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 105 transitions, 998 flow [2024-06-20 16:25:34,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 105 transitions, 952 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:34,567 INFO L231 Difference]: Finished difference. Result has 137 places, 91 transitions, 766 flow [2024-06-20 16:25:34,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=766, PETRI_PLACES=137, PETRI_TRANSITIONS=91} [2024-06-20 16:25:34,568 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-20 16:25:34,568 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 91 transitions, 766 flow [2024-06-20 16:25:34,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:34,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:34,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:34,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 16:25:34,568 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)] === [2024-06-20 16:25:34,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1466234206, now seen corresponding path program 7 times [2024-06-20 16:25:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077304024] [2024-06-20 16:25:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:35,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:35,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077304024] [2024-06-20 16:25:35,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077304024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:35,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:35,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:35,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446165276] [2024-06-20 16:25:35,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:35,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:35,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 91 transitions, 766 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:35,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:35,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:35,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:35,823 INFO L124 PetriNetUnfolderBase]: 294/592 cut-off events. [2024-06-20 16:25:35,823 INFO L125 PetriNetUnfolderBase]: For 31491/31491 co-relation queries the response was YES. [2024-06-20 16:25:35,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3858 conditions, 592 events. 294/592 cut-off events. For 31491/31491 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2784 event pairs, 87 based on Foata normal form. 2/592 useless extension candidates. Maximal degree in co-relation 3807. Up to 521 conditions per place. [2024-06-20 16:25:35,827 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-20 16:25:35,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 105 transitions, 1024 flow [2024-06-20 16:25:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 16:25:35,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:25:35,828 INFO L175 Difference]: Start difference. First operand has 137 places, 91 transitions, 766 flow. Second operand 10 states and 110 transitions. [2024-06-20 16:25:35,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 105 transitions, 1024 flow [2024-06-20 16:25:35,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 105 transitions, 960 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:35,869 INFO L231 Difference]: Finished difference. Result has 139 places, 92 transitions, 772 flow [2024-06-20 16:25:35,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=772, PETRI_PLACES=139, PETRI_TRANSITIONS=92} [2024-06-20 16:25:35,869 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-20 16:25:35,870 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 92 transitions, 772 flow [2024-06-20 16:25:35,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:35,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:35,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:35,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 16:25:35,870 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)] === [2024-06-20 16:25:35,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash 865623220, now seen corresponding path program 35 times [2024-06-20 16:25:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:35,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550414342] [2024-06-20 16:25:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:35,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:36,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:36,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550414342] [2024-06-20 16:25:36,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550414342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:36,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:36,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:36,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045344981] [2024-06-20 16:25:36,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:36,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:36,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:36,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:36,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:36,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 92 transitions, 772 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:36,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:36,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:36,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:37,304 INFO L124 PetriNetUnfolderBase]: 300/610 cut-off events. [2024-06-20 16:25:37,304 INFO L125 PetriNetUnfolderBase]: For 38938/38938 co-relation queries the response was YES. [2024-06-20 16:25:37,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 610 events. 300/610 cut-off events. For 38938/38938 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2932 event pairs, 85 based on Foata normal form. 18/626 useless extension candidates. Maximal degree in co-relation 3573. Up to 482 conditions per place. [2024-06-20 16:25:37,307 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 18 changer transitions 14/111 dead transitions. [2024-06-20 16:25:37,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 111 transitions, 1058 flow [2024-06-20 16:25:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-20 16:25:37,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-20 16:25:37,308 INFO L175 Difference]: Start difference. First operand has 139 places, 92 transitions, 772 flow. Second operand 11 states and 122 transitions. [2024-06-20 16:25:37,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 111 transitions, 1058 flow [2024-06-20 16:25:37,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 111 transitions, 998 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:37,345 INFO L231 Difference]: Finished difference. Result has 142 places, 86 transitions, 688 flow [2024-06-20 16:25:37,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=688, PETRI_PLACES=142, PETRI_TRANSITIONS=86} [2024-06-20 16:25:37,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-20 16:25:37,346 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 86 transitions, 688 flow [2024-06-20 16:25:37,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:37,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:37,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:37,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 16:25:37,346 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)] === [2024-06-20 16:25:37,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:37,347 INFO L85 PathProgramCache]: Analyzing trace with hash 608920900, now seen corresponding path program 36 times [2024-06-20 16:25:37,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:37,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450620835] [2024-06-20 16:25:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:37,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:38,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:38,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450620835] [2024-06-20 16:25:38,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450620835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:38,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:38,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:38,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547210779] [2024-06-20 16:25:38,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:38,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:38,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:38,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:38,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:38,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 86 transitions, 688 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:38,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:38,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:38,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:38,622 INFO L124 PetriNetUnfolderBase]: 273/561 cut-off events. [2024-06-20 16:25:38,623 INFO L125 PetriNetUnfolderBase]: For 34181/34181 co-relation queries the response was YES. [2024-06-20 16:25:38,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3378 conditions, 561 events. 273/561 cut-off events. For 34181/34181 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2636 event pairs, 75 based on Foata normal form. 10/569 useless extension candidates. Maximal degree in co-relation 3325. Up to 429 conditions per place. [2024-06-20 16:25:38,625 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 66 selfloop transitions, 26 changer transitions 12/106 dead transitions. [2024-06-20 16:25:38,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 106 transitions, 968 flow [2024-06-20 16:25:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:38,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 16:25:38,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 16:25:38,627 INFO L175 Difference]: Start difference. First operand has 142 places, 86 transitions, 688 flow. Second operand 11 states and 127 transitions. [2024-06-20 16:25:38,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 106 transitions, 968 flow [2024-06-20 16:25:38,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 106 transitions, 899 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-20 16:25:38,664 INFO L231 Difference]: Finished difference. Result has 137 places, 82 transitions, 640 flow [2024-06-20 16:25:38,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=640, PETRI_PLACES=137, PETRI_TRANSITIONS=82} [2024-06-20 16:25:38,665 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-20 16:25:38,665 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 82 transitions, 640 flow [2024-06-20 16:25:38,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:38,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:38,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:38,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 16:25:38,666 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)] === [2024-06-20 16:25:38,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 875154356, now seen corresponding path program 8 times [2024-06-20 16:25:38,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:38,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320198701] [2024-06-20 16:25:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:39,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:39,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:39,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320198701] [2024-06-20 16:25:39,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320198701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:39,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:39,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:39,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15594631] [2024-06-20 16:25:39,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:39,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:39,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:39,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:39,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:39,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:39,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 82 transitions, 640 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:39,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:39,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:39,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:39,926 INFO L124 PetriNetUnfolderBase]: 252/518 cut-off events. [2024-06-20 16:25:39,927 INFO L125 PetriNetUnfolderBase]: For 26607/26607 co-relation queries the response was YES. [2024-06-20 16:25:39,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 518 events. 252/518 cut-off events. For 26607/26607 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2379 event pairs, 77 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 3111. Up to 473 conditions per place. [2024-06-20 16:25:39,929 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 15 changer transitions 0/96 dead transitions. [2024-06-20 16:25:39,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 96 transitions, 880 flow [2024-06-20 16:25:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-20 16:25:39,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-20 16:25:39,930 INFO L175 Difference]: Start difference. First operand has 137 places, 82 transitions, 640 flow. Second operand 10 states and 106 transitions. [2024-06-20 16:25:39,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 96 transitions, 880 flow [2024-06-20 16:25:39,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 96 transitions, 813 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:39,961 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 633 flow [2024-06-20 16:25:39,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=633, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2024-06-20 16:25:39,961 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-20 16:25:39,961 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 633 flow [2024-06-20 16:25:39,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:39,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:39,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:39,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 16:25:39,962 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)] === [2024-06-20 16:25:39,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1721822130, now seen corresponding path program 37 times [2024-06-20 16:25:39,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:39,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591506928] [2024-06-20 16:25:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:39,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:41,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:41,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591506928] [2024-06-20 16:25:41,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591506928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:41,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:41,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:41,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466303206] [2024-06-20 16:25:41,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:41,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:41,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:41,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:41,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:41,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:41,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 83 transitions, 633 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:41,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:41,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:41,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:41,406 INFO L124 PetriNetUnfolderBase]: 282/584 cut-off events. [2024-06-20 16:25:41,406 INFO L125 PetriNetUnfolderBase]: For 34687/34687 co-relation queries the response was YES. [2024-06-20 16:25:41,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3311 conditions, 584 events. 282/584 cut-off events. For 34687/34687 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2838 event pairs, 89 based on Foata normal form. 16/598 useless extension candidates. Maximal degree in co-relation 3263. Up to 461 conditions per place. [2024-06-20 16:25:41,409 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 13 changer transitions 17/105 dead transitions. [2024-06-20 16:25:41,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 105 transitions, 925 flow [2024-06-20 16:25:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:41,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:41,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-20 16:25:41,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-20 16:25:41,410 INFO L175 Difference]: Start difference. First operand has 132 places, 83 transitions, 633 flow. Second operand 11 states and 125 transitions. [2024-06-20 16:25:41,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 105 transitions, 925 flow [2024-06-20 16:25:41,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 105 transitions, 875 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:41,440 INFO L231 Difference]: Finished difference. Result has 136 places, 78 transitions, 577 flow [2024-06-20 16:25:41,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=577, PETRI_PLACES=136, PETRI_TRANSITIONS=78} [2024-06-20 16:25:41,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-20 16:25:41,441 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 78 transitions, 577 flow [2024-06-20 16:25:41,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:41,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:41,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:41,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 16:25:41,441 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)] === [2024-06-20 16:25:41,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1714404884, now seen corresponding path program 9 times [2024-06-20 16:25:41,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:41,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706942382] [2024-06-20 16:25:41,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:41,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:42,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706942382] [2024-06-20 16:25:42,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706942382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:42,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:42,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353777665] [2024-06-20 16:25:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:42,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:42,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:42,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:42,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 78 transitions, 577 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:42,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:42,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:42,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:42,564 INFO L124 PetriNetUnfolderBase]: 236/490 cut-off events. [2024-06-20 16:25:42,564 INFO L125 PetriNetUnfolderBase]: For 24923/24923 co-relation queries the response was YES. [2024-06-20 16:25:42,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2885 conditions, 490 events. 236/490 cut-off events. For 24923/24923 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2220 event pairs, 76 based on Foata normal form. 2/490 useless extension candidates. Maximal degree in co-relation 2835. Up to 450 conditions per place. [2024-06-20 16:25:42,567 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-06-20 16:25:42,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 92 transitions, 815 flow [2024-06-20 16:25:42,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:42,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-20 16:25:42,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-20 16:25:42,568 INFO L175 Difference]: Start difference. First operand has 136 places, 78 transitions, 577 flow. Second operand 10 states and 107 transitions. [2024-06-20 16:25:42,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 92 transitions, 815 flow [2024-06-20 16:25:42,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 92 transitions, 765 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:42,600 INFO L231 Difference]: Finished difference. Result has 129 places, 79 transitions, 589 flow [2024-06-20 16:25:42,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=589, PETRI_PLACES=129, PETRI_TRANSITIONS=79} [2024-06-20 16:25:42,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-20 16:25:42,601 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 79 transitions, 589 flow [2024-06-20 16:25:42,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:42,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:42,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:42,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 16:25:42,602 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)] === [2024-06-20 16:25:42,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:42,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1714395584, now seen corresponding path program 10 times [2024-06-20 16:25:42,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:42,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412203397] [2024-06-20 16:25:42,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:42,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:43,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:43,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412203397] [2024-06-20 16:25:43,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412203397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:43,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:43,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735566600] [2024-06-20 16:25:43,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:43,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:43,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:43,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:43,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:43,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 79 transitions, 589 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:43,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:43,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:43,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:43,738 INFO L124 PetriNetUnfolderBase]: 233/485 cut-off events. [2024-06-20 16:25:43,739 INFO L125 PetriNetUnfolderBase]: For 21918/21918 co-relation queries the response was YES. [2024-06-20 16:25:43,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2726 conditions, 485 events. 233/485 cut-off events. For 21918/21918 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2197 event pairs, 73 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2679. Up to 431 conditions per place. [2024-06-20 16:25:43,741 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2024-06-20 16:25:43,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 92 transitions, 799 flow [2024-06-20 16:25:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:25:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:25:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 16:25:43,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-20 16:25:43,742 INFO L175 Difference]: Start difference. First operand has 129 places, 79 transitions, 589 flow. Second operand 10 states and 108 transitions. [2024-06-20 16:25:43,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 92 transitions, 799 flow [2024-06-20 16:25:43,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 92 transitions, 747 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:43,778 INFO L231 Difference]: Finished difference. Result has 131 places, 79 transitions, 573 flow [2024-06-20 16:25:43,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=573, PETRI_PLACES=131, PETRI_TRANSITIONS=79} [2024-06-20 16:25:43,778 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-20 16:25:43,778 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 79 transitions, 573 flow [2024-06-20 16:25:43,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:43,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:43,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:43,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 16:25:43,779 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)] === [2024-06-20 16:25:43,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:43,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1714672290, now seen corresponding path program 38 times [2024-06-20 16:25:43,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:43,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174949040] [2024-06-20 16:25:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:44,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:44,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174949040] [2024-06-20 16:25:44,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174949040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:44,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:44,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:44,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938451766] [2024-06-20 16:25:44,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:44,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:44,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:44,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:44,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:44,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:44,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 79 transitions, 573 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:44,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:44,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:44,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:45,106 INFO L124 PetriNetUnfolderBase]: 220/462 cut-off events. [2024-06-20 16:25:45,106 INFO L125 PetriNetUnfolderBase]: For 21528/21528 co-relation queries the response was YES. [2024-06-20 16:25:45,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 462 events. 220/462 cut-off events. For 21528/21528 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2074 event pairs, 60 based on Foata normal form. 10/470 useless extension candidates. Maximal degree in co-relation 2215. Up to 361 conditions per place. [2024-06-20 16:25:45,108 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 69 selfloop transitions, 16 changer transitions 11/98 dead transitions. [2024-06-20 16:25:45,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 98 transitions, 819 flow [2024-06-20 16:25:45,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 16:25:45,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 16:25:45,109 INFO L175 Difference]: Start difference. First operand has 131 places, 79 transitions, 573 flow. Second operand 11 states and 124 transitions. [2024-06-20 16:25:45,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 98 transitions, 819 flow [2024-06-20 16:25:45,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 98 transitions, 741 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:45,133 INFO L231 Difference]: Finished difference. Result has 133 places, 75 transitions, 491 flow [2024-06-20 16:25:45,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=491, PETRI_PLACES=133, PETRI_TRANSITIONS=75} [2024-06-20 16:25:45,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-20 16:25:45,133 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 75 transitions, 491 flow [2024-06-20 16:25:45,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:45,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:45,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:45,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 16:25:45,134 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)] === [2024-06-20 16:25:45,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:45,134 INFO L85 PathProgramCache]: Analyzing trace with hash 147710055, now seen corresponding path program 1 times [2024-06-20 16:25:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:45,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363928974] [2024-06-20 16:25:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:45,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:46,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363928974] [2024-06-20 16:25:46,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363928974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:46,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:46,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:46,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20084935] [2024-06-20 16:25:46,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:46,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:46,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:46,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:46,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:46,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 75 transitions, 491 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:46,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:46,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:46,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:46,672 INFO L124 PetriNetUnfolderBase]: 187/399 cut-off events. [2024-06-20 16:25:46,672 INFO L125 PetriNetUnfolderBase]: For 14543/14543 co-relation queries the response was YES. [2024-06-20 16:25:46,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 399 events. 187/399 cut-off events. For 14543/14543 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1705 event pairs, 47 based on Foata normal form. 6/403 useless extension candidates. Maximal degree in co-relation 1683. Up to 253 conditions per place. [2024-06-20 16:25:46,674 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 16 changer transitions 16/93 dead transitions. [2024-06-20 16:25:46,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 93 transitions, 721 flow [2024-06-20 16:25:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-20 16:25:46,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-20 16:25:46,675 INFO L175 Difference]: Start difference. First operand has 133 places, 75 transitions, 491 flow. Second operand 11 states and 120 transitions. [2024-06-20 16:25:46,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 93 transitions, 721 flow [2024-06-20 16:25:46,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 93 transitions, 666 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:46,691 INFO L231 Difference]: Finished difference. Result has 127 places, 69 transitions, 446 flow [2024-06-20 16:25:46,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=446, PETRI_PLACES=127, PETRI_TRANSITIONS=69} [2024-06-20 16:25:46,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-20 16:25:46,691 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 69 transitions, 446 flow [2024-06-20 16:25:46,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:46,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:46,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:46,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 16:25:46,692 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)] === [2024-06-20 16:25:46,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2094841379, now seen corresponding path program 2 times [2024-06-20 16:25:46,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:46,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511531874] [2024-06-20 16:25:46,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:46,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:47,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:47,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511531874] [2024-06-20 16:25:47,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511531874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:47,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:47,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181366080] [2024-06-20 16:25:47,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:47,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:47,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:47,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:47,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:47,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 69 transitions, 446 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:47,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:47,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:47,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:47,996 INFO L124 PetriNetUnfolderBase]: 175/375 cut-off events. [2024-06-20 16:25:47,996 INFO L125 PetriNetUnfolderBase]: For 13846/13846 co-relation queries the response was YES. [2024-06-20 16:25:47,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1597 conditions, 375 events. 175/375 cut-off events. For 13846/13846 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1567 event pairs, 45 based on Foata normal form. 6/379 useless extension candidates. Maximal degree in co-relation 1551. Up to 225 conditions per place. [2024-06-20 16:25:47,998 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 46 selfloop transitions, 10 changer transitions 29/87 dead transitions. [2024-06-20 16:25:47,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 87 transitions, 660 flow [2024-06-20 16:25:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:47,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-20 16:25:47,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-20 16:25:47,999 INFO L175 Difference]: Start difference. First operand has 127 places, 69 transitions, 446 flow. Second operand 11 states and 117 transitions. [2024-06-20 16:25:47,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 87 transitions, 660 flow [2024-06-20 16:25:48,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 87 transitions, 620 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:48,011 INFO L231 Difference]: Finished difference. Result has 118 places, 55 transitions, 361 flow [2024-06-20 16:25:48,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=361, PETRI_PLACES=118, PETRI_TRANSITIONS=55} [2024-06-20 16:25:48,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-20 16:25:48,012 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 55 transitions, 361 flow [2024-06-20 16:25:48,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:48,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:48,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:48,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 16:25:48,013 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)] === [2024-06-20 16:25:48,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:48,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1924826715, now seen corresponding path program 3 times [2024-06-20 16:25:48,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:48,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586715470] [2024-06-20 16:25:48,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:48,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:48,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586715470] [2024-06-20 16:25:48,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586715470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:48,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:48,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:48,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59187885] [2024-06-20 16:25:48,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:48,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:48,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:48,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:49,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:49,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 55 transitions, 361 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:49,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:49,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:49,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:49,211 INFO L124 PetriNetUnfolderBase]: 145/308 cut-off events. [2024-06-20 16:25:49,212 INFO L125 PetriNetUnfolderBase]: For 11729/11729 co-relation queries the response was YES. [2024-06-20 16:25:49,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1354 conditions, 308 events. 145/308 cut-off events. For 11729/11729 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1228 event pairs, 41 based on Foata normal form. 6/313 useless extension candidates. Maximal degree in co-relation 1311. Up to 244 conditions per place. [2024-06-20 16:25:49,214 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 47 selfloop transitions, 9 changer transitions 11/69 dead transitions. [2024-06-20 16:25:49,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 69 transitions, 529 flow [2024-06-20 16:25:49,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-20 16:25:49,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-20 16:25:49,215 INFO L175 Difference]: Start difference. First operand has 118 places, 55 transitions, 361 flow. Second operand 11 states and 110 transitions. [2024-06-20 16:25:49,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 69 transitions, 529 flow [2024-06-20 16:25:49,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 69 transitions, 485 flow, removed 11 selfloop flow, removed 16 redundant places. [2024-06-20 16:25:49,223 INFO L231 Difference]: Finished difference. Result has 95 places, 52 transitions, 319 flow [2024-06-20 16:25:49,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=319, PETRI_PLACES=95, PETRI_TRANSITIONS=52} [2024-06-20 16:25:49,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-20 16:25:49,224 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 52 transitions, 319 flow [2024-06-20 16:25:49,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:49,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:49,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:49,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 16:25:49,224 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)] === [2024-06-20 16:25:49,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1791092403, now seen corresponding path program 4 times [2024-06-20 16:25:49,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:49,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720331159] [2024-06-20 16:25:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:49,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:50,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:50,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:50,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720331159] [2024-06-20 16:25:50,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720331159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:50,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:50,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:50,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466953028] [2024-06-20 16:25:50,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:50,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:50,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:50,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:50,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:50,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:50,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 52 transitions, 319 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:50,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:50,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:50,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:50,666 INFO L124 PetriNetUnfolderBase]: 143/310 cut-off events. [2024-06-20 16:25:50,667 INFO L125 PetriNetUnfolderBase]: For 8140/8140 co-relation queries the response was YES. [2024-06-20 16:25:50,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 310 events. 143/310 cut-off events. For 8140/8140 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1247 event pairs, 39 based on Foata normal form. 12/321 useless extension candidates. Maximal degree in co-relation 1170. Up to 207 conditions per place. [2024-06-20 16:25:50,668 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 39 selfloop transitions, 12 changer transitions 13/66 dead transitions. [2024-06-20 16:25:50,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 66 transitions, 481 flow [2024-06-20 16:25:50,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:50,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-20 16:25:50,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-20 16:25:50,676 INFO L175 Difference]: Start difference. First operand has 95 places, 52 transitions, 319 flow. Second operand 11 states and 112 transitions. [2024-06-20 16:25:50,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 66 transitions, 481 flow [2024-06-20 16:25:50,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 66 transitions, 452 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:50,682 INFO L231 Difference]: Finished difference. Result has 90 places, 47 transitions, 283 flow [2024-06-20 16:25:50,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=283, PETRI_PLACES=90, PETRI_TRANSITIONS=47} [2024-06-20 16:25:50,682 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-20 16:25:50,682 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 47 transitions, 283 flow [2024-06-20 16:25:50,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:50,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:50,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:50,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 16:25:50,683 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)] === [2024-06-20 16:25:50,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:50,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1791380703, now seen corresponding path program 5 times [2024-06-20 16:25:50,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:50,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034301131] [2024-06-20 16:25:50,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:50,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:51,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:51,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034301131] [2024-06-20 16:25:51,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034301131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:51,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:51,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:51,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078533643] [2024-06-20 16:25:51,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:51,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:51,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:51,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:51,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:51,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:51,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 47 transitions, 283 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:51,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:51,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:51,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:52,116 INFO L124 PetriNetUnfolderBase]: 118/259 cut-off events. [2024-06-20 16:25:52,117 INFO L125 PetriNetUnfolderBase]: For 5228/5228 co-relation queries the response was YES. [2024-06-20 16:25:52,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 259 events. 118/259 cut-off events. For 5228/5228 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 954 event pairs, 37 based on Foata normal form. 6/264 useless extension candidates. Maximal degree in co-relation 1002. Up to 187 conditions per place. [2024-06-20 16:25:52,118 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 8 changer transitions 16/61 dead transitions. [2024-06-20 16:25:52,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 61 transitions, 433 flow [2024-06-20 16:25:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:52,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-20 16:25:52,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-20 16:25:52,119 INFO L175 Difference]: Start difference. First operand has 90 places, 47 transitions, 283 flow. Second operand 11 states and 111 transitions. [2024-06-20 16:25:52,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 61 transitions, 433 flow [2024-06-20 16:25:52,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 61 transitions, 395 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:52,125 INFO L231 Difference]: Finished difference. Result has 84 places, 41 transitions, 224 flow [2024-06-20 16:25:52,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=224, PETRI_PLACES=84, PETRI_TRANSITIONS=41} [2024-06-20 16:25:52,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2024-06-20 16:25:52,126 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 41 transitions, 224 flow [2024-06-20 16:25:52,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:52,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:52,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:52,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 16:25:52,127 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)] === [2024-06-20 16:25:52,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:52,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2020106881, now seen corresponding path program 6 times [2024-06-20 16:25:52,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:52,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013107283] [2024-06-20 16:25:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:52,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:53,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:53,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:53,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013107283] [2024-06-20 16:25:53,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013107283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:53,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:53,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:53,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812882384] [2024-06-20 16:25:53,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:53,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:53,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:53,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:53,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:53,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:53,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 41 transitions, 224 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:53,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:53,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:53,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:54,017 INFO L124 PetriNetUnfolderBase]: 103/230 cut-off events. [2024-06-20 16:25:54,018 INFO L125 PetriNetUnfolderBase]: For 4342/4342 co-relation queries the response was YES. [2024-06-20 16:25:54,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 230 events. 103/230 cut-off events. For 4342/4342 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 814 event pairs, 35 based on Foata normal form. 6/235 useless extension candidates. Maximal degree in co-relation 870. Up to 142 conditions per place. [2024-06-20 16:25:54,019 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 30 selfloop transitions, 12 changer transitions 11/55 dead transitions. [2024-06-20 16:25:54,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 55 transitions, 364 flow [2024-06-20 16:25:54,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:54,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-20 16:25:54,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-20 16:25:54,020 INFO L175 Difference]: Start difference. First operand has 84 places, 41 transitions, 224 flow. Second operand 11 states and 112 transitions. [2024-06-20 16:25:54,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 55 transitions, 364 flow [2024-06-20 16:25:54,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 55 transitions, 332 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 16:25:54,023 INFO L231 Difference]: Finished difference. Result has 76 places, 38 transitions, 204 flow [2024-06-20 16:25:54,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=204, PETRI_PLACES=76, PETRI_TRANSITIONS=38} [2024-06-20 16:25:54,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-20 16:25:54,024 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 38 transitions, 204 flow [2024-06-20 16:25:54,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:54,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:54,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:54,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 16:25:54,025 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)] === [2024-06-20 16:25:54,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:54,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2028438751, now seen corresponding path program 7 times [2024-06-20 16:25:54,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:54,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617316038] [2024-06-20 16:25:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:54,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:55,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:55,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617316038] [2024-06-20 16:25:55,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617316038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:55,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77883307] [2024-06-20 16:25:55,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:55,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:55,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:55,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 38 transitions, 204 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:55,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:55,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:55,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:55,384 INFO L124 PetriNetUnfolderBase]: 93/212 cut-off events. [2024-06-20 16:25:55,385 INFO L125 PetriNetUnfolderBase]: For 3265/3265 co-relation queries the response was YES. [2024-06-20 16:25:55,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 212 events. 93/212 cut-off events. For 3265/3265 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 724 event pairs, 31 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 778. Up to 121 conditions per place. [2024-06-20 16:25:55,385 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 29 selfloop transitions, 11 changer transitions 10/52 dead transitions. [2024-06-20 16:25:55,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 52 transitions, 336 flow [2024-06-20 16:25:55,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:55,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-20 16:25:55,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-20 16:25:55,386 INFO L175 Difference]: Start difference. First operand has 76 places, 38 transitions, 204 flow. Second operand 11 states and 112 transitions. [2024-06-20 16:25:55,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 52 transitions, 336 flow [2024-06-20 16:25:55,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 52 transitions, 308 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:55,389 INFO L231 Difference]: Finished difference. Result has 73 places, 34 transitions, 184 flow [2024-06-20 16:25:55,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=184, PETRI_PLACES=73, PETRI_TRANSITIONS=34} [2024-06-20 16:25:55,390 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-20 16:25:55,390 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 34 transitions, 184 flow [2024-06-20 16:25:55,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:55,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:55,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:55,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-20 16:25:55,390 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)] === [2024-06-20 16:25:55,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:55,391 INFO L85 PathProgramCache]: Analyzing trace with hash -844304261, now seen corresponding path program 8 times [2024-06-20 16:25:55,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:55,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755141252] [2024-06-20 16:25:55,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:55,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:56,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755141252] [2024-06-20 16:25:56,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755141252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:56,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:56,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:56,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843228536] [2024-06-20 16:25:56,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:56,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:56,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:56,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 34 transitions, 184 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:56,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:56,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:56,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:56,954 INFO L124 PetriNetUnfolderBase]: 66/155 cut-off events. [2024-06-20 16:25:56,954 INFO L125 PetriNetUnfolderBase]: For 1952/1952 co-relation queries the response was YES. [2024-06-20 16:25:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 155 events. 66/155 cut-off events. For 1952/1952 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 448 event pairs, 20 based on Foata normal form. 6/160 useless extension candidates. Maximal degree in co-relation 522. Up to 84 conditions per place. [2024-06-20 16:25:56,958 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 23 selfloop transitions, 6 changer transitions 16/47 dead transitions. [2024-06-20 16:25:56,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 47 transitions, 304 flow [2024-06-20 16:25:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-20 16:25:56,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-20 16:25:56,973 INFO L175 Difference]: Start difference. First operand has 73 places, 34 transitions, 184 flow. Second operand 11 states and 109 transitions. [2024-06-20 16:25:56,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 47 transitions, 304 flow [2024-06-20 16:25:56,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 47 transitions, 276 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:56,975 INFO L231 Difference]: Finished difference. Result has 68 places, 28 transitions, 143 flow [2024-06-20 16:25:56,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=143, PETRI_PLACES=68, PETRI_TRANSITIONS=28} [2024-06-20 16:25:56,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-20 16:25:56,976 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 28 transitions, 143 flow [2024-06-20 16:25:56,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:56,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:56,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:56,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-20 16:25:56,976 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)] === [2024-06-20 16:25:56,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:56,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1933158585, now seen corresponding path program 9 times [2024-06-20 16:25:56,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:56,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244509954] [2024-06-20 16:25:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:56,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:58,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:58,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244509954] [2024-06-20 16:25:58,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244509954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:58,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:58,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989915369] [2024-06-20 16:25:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:58,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:58,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:58,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:58,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:58,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:58,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 28 transitions, 143 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:58,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:58,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:58,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:58,389 INFO L124 PetriNetUnfolderBase]: 55/130 cut-off events. [2024-06-20 16:25:58,390 INFO L125 PetriNetUnfolderBase]: For 1538/1538 co-relation queries the response was YES. [2024-06-20 16:25:58,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 130 events. 55/130 cut-off events. For 1538/1538 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 334 event pairs, 18 based on Foata normal form. 6/135 useless extension candidates. Maximal degree in co-relation 426. Up to 66 conditions per place. [2024-06-20 16:25:58,390 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 5 changer transitions 16/41 dead transitions. [2024-06-20 16:25:58,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 41 transitions, 249 flow [2024-06-20 16:25:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-20 16:25:58,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-20 16:25:58,391 INFO L175 Difference]: Start difference. First operand has 68 places, 28 transitions, 143 flow. Second operand 11 states and 106 transitions. [2024-06-20 16:25:58,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 41 transitions, 249 flow [2024-06-20 16:25:58,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 41 transitions, 227 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:58,393 INFO L231 Difference]: Finished difference. Result has 58 places, 22 transitions, 106 flow [2024-06-20 16:25:58,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=106, PETRI_PLACES=58, PETRI_TRANSITIONS=22} [2024-06-20 16:25:58,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-20 16:25:58,393 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 22 transitions, 106 flow [2024-06-20 16:25:58,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:58,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:58,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:58,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-20 16:25:58,394 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)] === [2024-06-20 16:25:58,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:58,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2115136085, now seen corresponding path program 10 times [2024-06-20 16:25:58,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:58,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716325391] [2024-06-20 16:25:58,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:58,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:59,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:59,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716325391] [2024-06-20 16:25:59,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716325391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:59,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:59,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:59,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356053641] [2024-06-20 16:25:59,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:59,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:59,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:59,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:25:59,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 22 transitions, 106 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:59,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:59,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:25:59,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:59,393 INFO L124 PetriNetUnfolderBase]: 27/70 cut-off events. [2024-06-20 16:25:59,393 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2024-06-20 16:25:59,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 70 events. 27/70 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 1 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 182. Up to 24 conditions per place. [2024-06-20 16:25:59,394 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-20 16:25:59,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 31 transitions, 158 flow [2024-06-20 16:25:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-20 16:25:59,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-20 16:25:59,395 INFO L175 Difference]: Start difference. First operand has 58 places, 22 transitions, 106 flow. Second operand 11 states and 96 transitions. [2024-06-20 16:25:59,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 31 transitions, 158 flow [2024-06-20 16:25:59,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-20 16:25:59,395 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-06-20 16:25:59,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=42, PETRI_TRANSITIONS=0} [2024-06-20 16:25:59,396 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-20 16:25:59,396 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-06-20 16:25:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:25:59,398 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 16:25:59,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 16:25:59,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 16:25:59,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 16:25:59,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-20 16:25:59,412 INFO L445 BasicCegarLoop]: Path program histogram: [38, 22, 14, 12, 10, 10, 7, 7, 6, 5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:59,414 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 16:25:59,415 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 16:25:59,417 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 16:25:59,418 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 16:25:59,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 04:25:59 BasicIcfg [2024-06-20 16:25:59,418 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 16:25:59,419 INFO L158 Benchmark]: Toolchain (without parser) took 210631.55ms. Allocated memory was 169.9MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 131.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 269.3MB. Max. memory is 16.1GB. [2024-06-20 16:25:59,419 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 169.9MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 16:25:59,419 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 169.9MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 16:25:59,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 578.25ms. Allocated memory is still 169.9MB. Free memory was 131.6MB in the beginning and 98.1MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-20 16:25:59,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.68ms. Allocated memory is still 169.9MB. Free memory was 98.1MB in the beginning and 95.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 16:25:59,419 INFO L158 Benchmark]: Boogie Preprocessor took 67.13ms. Allocated memory is still 169.9MB. Free memory was 95.7MB in the beginning and 92.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 16:25:59,420 INFO L158 Benchmark]: RCFGBuilder took 678.02ms. Allocated memory was 169.9MB in the beginning and 220.2MB in the end (delta: 50.3MB). Free memory was 92.0MB in the beginning and 180.6MB in the end (delta: -88.6MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2024-06-20 16:25:59,420 INFO L158 Benchmark]: TraceAbstraction took 209239.15ms. Allocated memory was 220.2MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 180.6MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 265.0MB. Max. memory is 16.1GB. [2024-06-20 16:25:59,421 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 169.9MB. Free memory is still 136.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 169.9MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 578.25ms. Allocated memory is still 169.9MB. Free memory was 131.6MB in the beginning and 98.1MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.68ms. Allocated memory is still 169.9MB. Free memory was 98.1MB in the beginning and 95.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.13ms. Allocated memory is still 169.9MB. Free memory was 95.7MB in the beginning and 92.0MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 678.02ms. Allocated memory was 169.9MB in the beginning and 220.2MB in the end (delta: 50.3MB). Free memory was 92.0MB in the beginning and 180.6MB in the end (delta: -88.6MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. * TraceAbstraction took 209239.15ms. Allocated memory was 220.2MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 180.6MB in the beginning and 1.3GB in the end (delta: -1.1GB). Peak memory consumption was 265.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: 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, 50 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: 209.2s, OverallIterations: 158, TraceHistogramMax: 1, PathProgramHistogramMax: 38, EmptinessCheckTime: 0.0s, AutomataDifference: 79.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10910 SdHoareTripleChecker+Valid, 35.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9253 mSDsluCounter, 9509 SdHoareTripleChecker+Invalid, 30.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8572 mSDsCounter, 2524 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59383 IncrementalHoareTripleChecker+Invalid, 61907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2524 mSolverCounterUnsat, 937 mSDtfsCounter, 59383 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1750 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1749 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3816 ImplicationChecksByTransitivity, 44.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2340occurred in iteration=82, InterpolantAutomatonStates: 1537, 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, 1.0s SatisfiabilityAnalysisTime, 127.2s InterpolantComputationTime, 2588 NumberOfCodeBlocks, 2588 NumberOfCodeBlocksAsserted, 158 NumberOfCheckSat, 2430 ConstructedInterpolants, 0 QuantifiedInterpolants, 110413 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 158 InterpolantComputations, 158 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! [2024-06-20 16:25:59,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE