./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_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/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/rfi001_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/rfi001_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-cde23df-m [2024-06-14 12:39:54,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:39:54,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:39:54,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:39:54,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:39:54,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:39:54,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:39:54,244 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:39:54,244 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:39:54,245 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:39:54,245 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:39:54,245 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:39:54,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:39:54,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:39:54,246 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:39:54,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:39:54,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:39:54,247 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:39:54,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:39:54,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:39:54,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:39:54,248 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:39:54,248 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:39:54,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:39:54,248 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:39:54,248 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:39:54,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:39:54,249 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:39:54,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:39:54,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:39:54,249 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:39:54,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:39:54,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:39:54,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:39:54,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:39:54,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:39:54,250 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:39:54,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:39:54,251 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:39:54,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:39:54,251 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:39:54,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:39:54,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:39:54,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:39:54,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:39:54,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:39:54,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:39:54,439 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:39:54,439 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:39:54,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi001_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-14 12:39:54,567 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:39:54,567 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:39:54,568 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:39:55,546 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:39:55,732 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:39:55,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:39:55,742 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179eebd26/66ff726f1ee24ea899bdec49ef992d90/FLAG3ad4ed167 [2024-06-14 12:39:55,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179eebd26/66ff726f1ee24ea899bdec49ef992d90 [2024-06-14 12:39:55,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:39:55,754 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:39:55,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:39:55,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:39:55,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:39:55,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:39:54" (1/2) ... [2024-06-14 12:39:55,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d86e2eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:39:55, skipping insertion in model container [2024-06-14 12:39:55,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:39:54" (1/2) ... [2024-06-14 12:39:55,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e3c6c65 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:39:55, skipping insertion in model container [2024-06-14 12:39:55,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:39:55" (2/2) ... [2024-06-14 12:39:55,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d86e2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:55, skipping insertion in model container [2024-06-14 12:39:55,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:39:55" (2/2) ... [2024-06-14 12:39:55,765 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:39:55,825 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:39:55,826 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-06-14 12:39:55,826 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1))) [2024-06-14 12:39:55,826 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:39:55,827 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-14 12:39:55,862 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:39:56,113 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:39:56,124 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:39:56,205 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:39:56,242 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:39:56,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56 WrapperNode [2024-06-14 12:39:56,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:39:56,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:39:56,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:39:56,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:39:56,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,274 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,298 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 114 [2024-06-14 12:39:56,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:39:56,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:39:56,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:39:56,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:39:56,328 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,337 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,358 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]. [2024-06-14 12:39:56,359 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:39:56,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:39:56,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:39:56,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:39:56,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (1/1) ... [2024-06-14 12:39:56,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:39:56,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:39:56,413 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) [2024-06-14 12:39:56,428 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 [2024-06-14 12:39:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:39:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:39:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:39:56,439 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:39:56,439 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:39:56,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:39:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:39:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:39:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:39:56,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:39:56,441 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:39:56,528 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:39:56,529 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:39:56,835 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:39:56,835 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:39:56,962 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:39:56,963 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:39:56,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:39:56 BoogieIcfgContainer [2024-06-14 12:39:56,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:39:56,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:39:56,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:39:56,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:39:56,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:39:54" (1/4) ... [2024-06-14 12:39:56,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56200e07 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:39:56, skipping insertion in model container [2024-06-14 12:39:56,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:39:55" (2/4) ... [2024-06-14 12:39:56,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56200e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:39:56, skipping insertion in model container [2024-06-14 12:39:56,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:39:56" (3/4) ... [2024-06-14 12:39:56,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56200e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:39:56, skipping insertion in model container [2024-06-14 12:39:56,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:39:56" (4/4) ... [2024-06-14 12:39:56,978 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.oepc_pso.oepc_rmo.oepc.i [2024-06-14 12:39:56,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:39:56,992 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:39:56,992 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:39:57,027 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:39:57,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:39:57,084 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 12:39:57,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:39:57,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:39:57,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 12:39:57,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 12:39:57,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:39:57,101 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;@3d5b89b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:39:57,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:39:57,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:39:57,104 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:39:57,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:39:57,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:57,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:39:57,105 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)] === [2024-06-14 12:39:57,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1710069081, now seen corresponding path program 1 times [2024-06-14 12:39:57,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:57,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221829079] [2024-06-14 12:39:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:57,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:57,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:57,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221829079] [2024-06-14 12:39:57,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221829079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:57,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:57,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:39:57,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47907969] [2024-06-14 12:39:57,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:57,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:39:57,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:57,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:39:57,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:39:57,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:39:57,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:57,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:57,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:39:57,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:58,092 INFO L124 PetriNetUnfolderBase]: 189/352 cut-off events. [2024-06-14 12:39:58,093 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 12:39:58,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 352 events. 189/352 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1280 event pairs, 115 based on Foata normal form. 1/339 useless extension candidates. Maximal degree in co-relation 696. Up to 333 conditions per place. [2024-06-14 12:39:58,098 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 24 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 12:39:58,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 123 flow [2024-06-14 12:39:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:39:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:39:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-14 12:39:58,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-14 12:39:58,109 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 53 transitions. [2024-06-14 12:39:58,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 123 flow [2024-06-14 12:39:58,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:39:58,114 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 12:39:58,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 12:39:58,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 12:39:58,119 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 12:39:58,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:58,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:58,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:58,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:39:58,120 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)] === [2024-06-14 12:39:58,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:58,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1595404566, now seen corresponding path program 1 times [2024-06-14 12:39:58,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:58,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320892869] [2024-06-14 12:39:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:58,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:58,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:58,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320892869] [2024-06-14 12:39:58,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320892869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:58,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:58,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:39:58,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760960955] [2024-06-14 12:39:58,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:58,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:39:58,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:58,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:39:58,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:39:58,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:39:58,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:58,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:58,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:39:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:58,679 INFO L124 PetriNetUnfolderBase]: 186/349 cut-off events. [2024-06-14 12:39:58,679 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-14 12:39:58,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 349 events. 186/349 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1264 event pairs, 94 based on Foata normal form. 2/343 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-14 12:39:58,684 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 12:39:58,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2024-06-14 12:39:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:39:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:39:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-14 12:39:58,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-14 12:39:58,687 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 67 transitions. [2024-06-14 12:39:58,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2024-06-14 12:39:58,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:39:58,690 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 12:39:58,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-14 12:39:58,692 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 12:39:58,692 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 12:39:58,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:58,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:58,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:58,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:39:58,693 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)] === [2024-06-14 12:39:58,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2061510898, now seen corresponding path program 1 times [2024-06-14 12:39:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:58,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129919592] [2024-06-14 12:39:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:58,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:59,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:59,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129919592] [2024-06-14 12:39:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129919592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:59,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:59,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:39:59,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554309907] [2024-06-14 12:39:59,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:59,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:39:59,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:59,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:39:59,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:39:59,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:39:59,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:59,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:59,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:39:59,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:39:59,241 INFO L124 PetriNetUnfolderBase]: 187/355 cut-off events. [2024-06-14 12:39:59,241 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-14 12:39:59,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 355 events. 187/355 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1295 event pairs, 67 based on Foata normal form. 3/356 useless extension candidates. Maximal degree in co-relation 868. Up to 293 conditions per place. [2024-06-14 12:39:59,243 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-14 12:39:59,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 257 flow [2024-06-14 12:39:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:39:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:39:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-14 12:39:59,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-06-14 12:39:59,245 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 87 transitions. [2024-06-14 12:39:59,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 257 flow [2024-06-14 12:39:59,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 248 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:39:59,246 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 164 flow [2024-06-14 12:39:59,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2024-06-14 12:39:59,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-14 12:39:59,247 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 164 flow [2024-06-14 12:39:59,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:59,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:39:59,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:39:59,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:39:59,248 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)] === [2024-06-14 12:39:59,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:39:59,248 INFO L85 PathProgramCache]: Analyzing trace with hash -517670889, now seen corresponding path program 1 times [2024-06-14 12:39:59,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:39:59,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407565391] [2024-06-14 12:39:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:39:59,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:39:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:39:59,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:39:59,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:39:59,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407565391] [2024-06-14 12:39:59,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407565391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:39:59,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:39:59,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:39:59,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505098032] [2024-06-14 12:39:59,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:39:59,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:39:59,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:39:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:39:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:39:59,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:39:59,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:39:59,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:39:59,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:39:59,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:00,002 INFO L124 PetriNetUnfolderBase]: 188/357 cut-off events. [2024-06-14 12:40:00,003 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-14 12:40:00,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 357 events. 188/357 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1315 event pairs, 46 based on Foata normal form. 3/358 useless extension candidates. Maximal degree in co-relation 1042. Up to 282 conditions per place. [2024-06-14 12:40:00,005 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2024-06-14 12:40:00,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 57 transitions, 342 flow [2024-06-14 12:40:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:40:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:40:00,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-14 12:40:00,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-14 12:40:00,009 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 164 flow. Second operand 6 states and 102 transitions. [2024-06-14 12:40:00,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 57 transitions, 342 flow [2024-06-14 12:40:00,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 338 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 12:40:00,014 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 216 flow [2024-06-14 12:40:00,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-14 12:40:00,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-14 12:40:00,016 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 216 flow [2024-06-14 12:40:00,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:00,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:00,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:00,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:40:00,016 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)] === [2024-06-14 12:40:00,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:00,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1132072369, now seen corresponding path program 1 times [2024-06-14 12:40:00,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:00,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946765001] [2024-06-14 12:40:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:00,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:00,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946765001] [2024-06-14 12:40:00,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946765001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:00,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:00,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:40:00,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706620552] [2024-06-14 12:40:00,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:00,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:40:00,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:00,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:40:00,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:40:00,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 12:40:00,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2024-06-14 12:40:00,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:00,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 12:40:00,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:00,810 INFO L124 PetriNetUnfolderBase]: 189/360 cut-off events. [2024-06-14 12:40:00,810 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-14 12:40:00,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 360 events. 189/360 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1329 event pairs, 24 based on Foata normal form. 6/364 useless extension candidates. Maximal degree in co-relation 1172. Up to 259 conditions per place. [2024-06-14 12:40:00,812 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-14 12:40:00,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 388 flow [2024-06-14 12:40:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:00,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-14 12:40:00,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 12:40:00,813 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 216 flow. Second operand 7 states and 112 transitions. [2024-06-14 12:40:00,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 388 flow [2024-06-14 12:40:00,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 356 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:00,815 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 219 flow [2024-06-14 12:40:00,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-14 12:40:00,816 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 12:40:00,816 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 219 flow [2024-06-14 12:40:00,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2024-06-14 12:40:00,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:00,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:00,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:40:00,817 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)] === [2024-06-14 12:40:00,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash 889308452, now seen corresponding path program 1 times [2024-06-14 12:40:00,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:00,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362718679] [2024-06-14 12:40:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:00,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:01,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:01,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362718679] [2024-06-14 12:40:01,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362718679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:01,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:01,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:40:01,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120734670] [2024-06-14 12:40:01,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:01,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:40:01,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:01,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:40:01,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:40:01,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:40:01,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-14 12:40:01,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:01,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:40:01,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:01,442 INFO L124 PetriNetUnfolderBase]: 187/356 cut-off events. [2024-06-14 12:40:01,442 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-14 12:40:01,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 356 events. 187/356 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1301 event pairs, 47 based on Foata normal form. 1/355 useless extension candidates. Maximal degree in co-relation 1217. Up to 329 conditions per place. [2024-06-14 12:40:01,445 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 35 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2024-06-14 12:40:01,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 313 flow [2024-06-14 12:40:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:40:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:40:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-06-14 12:40:01,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:40:01,446 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 219 flow. Second operand 5 states and 65 transitions. [2024-06-14 12:40:01,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 313 flow [2024-06-14 12:40:01,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 272 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:01,448 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 195 flow [2024-06-14 12:40:01,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2024-06-14 12:40:01,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 12:40:01,450 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 195 flow [2024-06-14 12:40:01,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 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) [2024-06-14 12:40:01,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:01,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:01,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:40:01,451 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)] === [2024-06-14 12:40:01,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1770131004, now seen corresponding path program 1 times [2024-06-14 12:40:01,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:01,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400533357] [2024-06-14 12:40:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:01,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:01,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:01,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400533357] [2024-06-14 12:40:01,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400533357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:01,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:01,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:40:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965058504] [2024-06-14 12:40:01,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:01,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:40:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:40:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:40:01,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:01,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:01,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:01,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:01,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:02,204 INFO L124 PetriNetUnfolderBase]: 212/383 cut-off events. [2024-06-14 12:40:02,204 INFO L125 PetriNetUnfolderBase]: For 1031/1031 co-relation queries the response was YES. [2024-06-14 12:40:02,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1326 conditions, 383 events. 212/383 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1348 event pairs, 55 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1300. Up to 368 conditions per place. [2024-06-14 12:40:02,206 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-14 12:40:02,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 307 flow [2024-06-14 12:40:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:40:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:40:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-14 12:40:02,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 12:40:02,208 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 195 flow. Second operand 6 states and 70 transitions. [2024-06-14 12:40:02,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 307 flow [2024-06-14 12:40:02,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 292 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:02,210 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 213 flow [2024-06-14 12:40:02,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-14 12:40:02,210 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-14 12:40:02,211 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 213 flow [2024-06-14 12:40:02,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:02,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:02,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:02,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:40:02,211 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)] === [2024-06-14 12:40:02,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1361521897, now seen corresponding path program 1 times [2024-06-14 12:40:02,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:02,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232560892] [2024-06-14 12:40:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:02,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:02,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:02,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232560892] [2024-06-14 12:40:02,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232560892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:02,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:02,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:40:02,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215885435] [2024-06-14 12:40:02,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:02,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:40:02,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:02,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:40:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:40:02,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:40:02,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:02,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:02,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:40:02,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:02,828 INFO L124 PetriNetUnfolderBase]: 197/369 cut-off events. [2024-06-14 12:40:02,829 INFO L125 PetriNetUnfolderBase]: For 1312/1312 co-relation queries the response was YES. [2024-06-14 12:40:02,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 369 events. 197/369 cut-off events. For 1312/1312 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1348 event pairs, 51 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1323. Up to 306 conditions per place. [2024-06-14 12:40:02,831 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 36 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-14 12:40:02,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 362 flow [2024-06-14 12:40:02,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:40:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:40:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-14 12:40:02,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322916666666667 [2024-06-14 12:40:02,832 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 213 flow. Second operand 6 states and 83 transitions. [2024-06-14 12:40:02,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 362 flow [2024-06-14 12:40:02,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:02,836 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 244 flow [2024-06-14 12:40:02,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-06-14 12:40:02,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-14 12:40:02,838 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 244 flow [2024-06-14 12:40:02,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:02,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:02,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:02,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:40:02,839 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)] === [2024-06-14 12:40:02,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash -72326031, now seen corresponding path program 2 times [2024-06-14 12:40:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:02,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977312165] [2024-06-14 12:40:02,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:02,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:03,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977312165] [2024-06-14 12:40:03,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977312165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:03,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:03,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:40:03,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790293397] [2024-06-14 12:40:03,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:03,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:40:03,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:03,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:40:03,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:40:03,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:40:03,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:03,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:03,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:40:03,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:03,475 INFO L124 PetriNetUnfolderBase]: 192/359 cut-off events. [2024-06-14 12:40:03,475 INFO L125 PetriNetUnfolderBase]: For 1557/1557 co-relation queries the response was YES. [2024-06-14 12:40:03,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 359 events. 192/359 cut-off events. For 1557/1557 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1296 event pairs, 50 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1344. Up to 327 conditions per place. [2024-06-14 12:40:03,477 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2024-06-14 12:40:03,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 348 flow [2024-06-14 12:40:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:40:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:40:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-14 12:40:03,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:40:03,478 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 244 flow. Second operand 6 states and 75 transitions. [2024-06-14 12:40:03,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 348 flow [2024-06-14 12:40:03,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 333 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:03,481 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 250 flow [2024-06-14 12:40:03,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-06-14 12:40:03,481 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-14 12:40:03,482 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 250 flow [2024-06-14 12:40:03,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:03,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:03,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:03,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:40:03,482 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)] === [2024-06-14 12:40:03,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:03,483 INFO L85 PathProgramCache]: Analyzing trace with hash -101638205, now seen corresponding path program 1 times [2024-06-14 12:40:03,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:03,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073435167] [2024-06-14 12:40:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:03,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:03,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073435167] [2024-06-14 12:40:03,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073435167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:03,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:03,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:03,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979780928] [2024-06-14 12:40:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:03,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:03,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:04,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:04,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 250 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) [2024-06-14 12:40:04,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:04,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:04,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:04,291 INFO L124 PetriNetUnfolderBase]: 202/366 cut-off events. [2024-06-14 12:40:04,291 INFO L125 PetriNetUnfolderBase]: For 1803/1803 co-relation queries the response was YES. [2024-06-14 12:40:04,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 366 events. 202/366 cut-off events. For 1803/1803 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1260 event pairs, 50 based on Foata normal form. 3/367 useless extension candidates. Maximal degree in co-relation 1384. Up to 342 conditions per place. [2024-06-14 12:40:04,294 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 42 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-06-14 12:40:04,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 384 flow [2024-06-14 12:40:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:04,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 12:40:04,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-14 12:40:04,295 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 250 flow. Second operand 7 states and 81 transitions. [2024-06-14 12:40:04,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 384 flow [2024-06-14 12:40:04,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 350 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:04,297 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 255 flow [2024-06-14 12:40:04,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-14 12:40:04,297 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-14 12:40:04,298 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 255 flow [2024-06-14 12:40:04,298 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) [2024-06-14 12:40:04,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:04,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:04,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:40:04,298 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)] === [2024-06-14 12:40:04,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash 111499709, now seen corresponding path program 1 times [2024-06-14 12:40:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:04,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919829941] [2024-06-14 12:40:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:04,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:04,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:04,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919829941] [2024-06-14 12:40:04,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919829941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:04,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:04,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:04,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671923695] [2024-06-14 12:40:04,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:04,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:04,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:04,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:04,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:04,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:04,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 255 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) [2024-06-14 12:40:04,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:04,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:04,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:04,942 INFO L124 PetriNetUnfolderBase]: 208/376 cut-off events. [2024-06-14 12:40:04,942 INFO L125 PetriNetUnfolderBase]: For 2064/2064 co-relation queries the response was YES. [2024-06-14 12:40:04,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 376 events. 208/376 cut-off events. For 2064/2064 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1307 event pairs, 50 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1466. Up to 308 conditions per place. [2024-06-14 12:40:04,944 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 43 selfloop transitions, 17 changer transitions 0/62 dead transitions. [2024-06-14 12:40:04,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 449 flow [2024-06-14 12:40:04,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:04,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-14 12:40:04,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-14 12:40:04,945 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 255 flow. Second operand 7 states and 90 transitions. [2024-06-14 12:40:04,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 449 flow [2024-06-14 12:40:04,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 62 transitions, 426 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:04,948 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 300 flow [2024-06-14 12:40:04,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=300, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-14 12:40:04,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-14 12:40:04,949 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 300 flow [2024-06-14 12:40:04,949 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) [2024-06-14 12:40:04,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:04,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:04,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:40:04,949 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)] === [2024-06-14 12:40:04,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2030755193, now seen corresponding path program 2 times [2024-06-14 12:40:04,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:04,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421224175] [2024-06-14 12:40:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:04,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:05,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:05,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421224175] [2024-06-14 12:40:05,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421224175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:05,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:05,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:05,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773862865] [2024-06-14 12:40:05,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:05,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:05,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:05,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:05,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:05,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 300 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) [2024-06-14 12:40:05,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:05,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:05,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:05,653 INFO L124 PetriNetUnfolderBase]: 211/381 cut-off events. [2024-06-14 12:40:05,654 INFO L125 PetriNetUnfolderBase]: For 2413/2413 co-relation queries the response was YES. [2024-06-14 12:40:05,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 381 events. 211/381 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1320 event pairs, 48 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1579. Up to 363 conditions per place. [2024-06-14 12:40:05,656 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-14 12:40:05,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 444 flow [2024-06-14 12:40:05,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 12:40:05,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 12:40:05,657 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 300 flow. Second operand 7 states and 79 transitions. [2024-06-14 12:40:05,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 444 flow [2024-06-14 12:40:05,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 424 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:05,662 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 323 flow [2024-06-14 12:40:05,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-14 12:40:05,662 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-14 12:40:05,663 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 323 flow [2024-06-14 12:40:05,663 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) [2024-06-14 12:40:05,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:05,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:05,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:40:05,663 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)] === [2024-06-14 12:40:05,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:05,664 INFO L85 PathProgramCache]: Analyzing trace with hash 288631229, now seen corresponding path program 3 times [2024-06-14 12:40:05,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:05,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937888239] [2024-06-14 12:40:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:05,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:06,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937888239] [2024-06-14 12:40:06,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937888239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:06,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:06,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173500866] [2024-06-14 12:40:06,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:06,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:06,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:06,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:06,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:06,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:06,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 323 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) [2024-06-14 12:40:06,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:06,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:06,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:06,365 INFO L124 PetriNetUnfolderBase]: 209/378 cut-off events. [2024-06-14 12:40:06,365 INFO L125 PetriNetUnfolderBase]: For 2828/2828 co-relation queries the response was YES. [2024-06-14 12:40:06,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 378 events. 209/378 cut-off events. For 2828/2828 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1306 event pairs, 48 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1622. Up to 354 conditions per place. [2024-06-14 12:40:06,367 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 46 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-14 12:40:06,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 61 transitions, 475 flow [2024-06-14 12:40:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:06,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 12:40:06,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-14 12:40:06,368 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 323 flow. Second operand 7 states and 81 transitions. [2024-06-14 12:40:06,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 61 transitions, 475 flow [2024-06-14 12:40:06,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 450 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:06,371 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 351 flow [2024-06-14 12:40:06,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-14 12:40:06,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-14 12:40:06,372 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 351 flow [2024-06-14 12:40:06,372 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) [2024-06-14 12:40:06,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:06,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:06,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:40:06,372 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)] === [2024-06-14 12:40:06,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash 899908152, now seen corresponding path program 1 times [2024-06-14 12:40:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:06,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818418764] [2024-06-14 12:40:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:06,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:06,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818418764] [2024-06-14 12:40:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818418764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:06,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:06,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62585313] [2024-06-14 12:40:06,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:06,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:06,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:06,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:06,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:07,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:40:07,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:07,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:07,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:40:07,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:07,220 INFO L124 PetriNetUnfolderBase]: 202/373 cut-off events. [2024-06-14 12:40:07,221 INFO L125 PetriNetUnfolderBase]: For 3419/3419 co-relation queries the response was YES. [2024-06-14 12:40:07,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1685 conditions, 373 events. 202/373 cut-off events. For 3419/3419 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1321 event pairs, 46 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 1652. Up to 288 conditions per place. [2024-06-14 12:40:07,224 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 17 changer transitions 0/72 dead transitions. [2024-06-14 12:40:07,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 563 flow [2024-06-14 12:40:07,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 12:40:07,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:40:07,226 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 351 flow. Second operand 7 states and 96 transitions. [2024-06-14 12:40:07,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 563 flow [2024-06-14 12:40:07,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 528 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:07,230 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 383 flow [2024-06-14 12:40:07,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-06-14 12:40:07,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 12:40:07,231 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 383 flow [2024-06-14 12:40:07,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:07,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:07,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:07,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:40:07,232 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)] === [2024-06-14 12:40:07,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:07,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1546176598, now seen corresponding path program 2 times [2024-06-14 12:40:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:07,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789157684] [2024-06-14 12:40:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:07,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:07,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:07,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789157684] [2024-06-14 12:40:07,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789157684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:07,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:07,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:07,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907630211] [2024-06-14 12:40:07,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:07,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:07,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:07,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:40:07,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 383 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:07,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:07,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:40:07,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:08,141 INFO L124 PetriNetUnfolderBase]: 200/370 cut-off events. [2024-06-14 12:40:08,141 INFO L125 PetriNetUnfolderBase]: For 3825/3825 co-relation queries the response was YES. [2024-06-14 12:40:08,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 370 events. 200/370 cut-off events. For 3825/3825 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1302 event pairs, 46 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1698. Up to 301 conditions per place. [2024-06-14 12:40:08,144 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 45 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2024-06-14 12:40:08,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 527 flow [2024-06-14 12:40:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 12:40:08,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-14 12:40:08,145 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 383 flow. Second operand 7 states and 92 transitions. [2024-06-14 12:40:08,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 527 flow [2024-06-14 12:40:08,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 502 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:08,149 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 393 flow [2024-06-14 12:40:08,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-06-14 12:40:08,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-14 12:40:08,150 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 393 flow [2024-06-14 12:40:08,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:08,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:08,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:08,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:40:08,151 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)] === [2024-06-14 12:40:08,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1542457373, now seen corresponding path program 1 times [2024-06-14 12:40:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:08,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067714166] [2024-06-14 12:40:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:08,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:08,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067714166] [2024-06-14 12:40:08,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067714166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:08,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:08,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:08,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814471451] [2024-06-14 12:40:08,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:08,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:08,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:08,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:08,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:08,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:08,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:08,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:08,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:08,800 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-14 12:40:08,800 INFO L125 PetriNetUnfolderBase]: For 4266/4266 co-relation queries the response was YES. [2024-06-14 12:40:08,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 385 events. 213/385 cut-off events. For 4266/4266 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1341 event pairs, 49 based on Foata normal form. 1/384 useless extension candidates. Maximal degree in co-relation 1820. Up to 315 conditions per place. [2024-06-14 12:40:08,803 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 48 selfloop transitions, 24 changer transitions 0/74 dead transitions. [2024-06-14 12:40:08,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 617 flow [2024-06-14 12:40:08,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-14 12:40:08,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517857142857145 [2024-06-14 12:40:08,804 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 393 flow. Second operand 7 states and 93 transitions. [2024-06-14 12:40:08,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 617 flow [2024-06-14 12:40:08,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 579 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:08,809 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 424 flow [2024-06-14 12:40:08,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-06-14 12:40:08,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-14 12:40:08,810 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 424 flow [2024-06-14 12:40:08,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:08,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:08,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:08,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:40:08,811 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)] === [2024-06-14 12:40:08,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:08,811 INFO L85 PathProgramCache]: Analyzing trace with hash -838475545, now seen corresponding path program 2 times [2024-06-14 12:40:08,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:08,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112401657] [2024-06-14 12:40:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:09,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112401657] [2024-06-14 12:40:09,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112401657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:09,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:09,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:09,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803429431] [2024-06-14 12:40:09,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:09,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:09,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:09,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:09,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 424 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:09,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:09,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:09,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:09,483 INFO L124 PetriNetUnfolderBase]: 216/390 cut-off events. [2024-06-14 12:40:09,483 INFO L125 PetriNetUnfolderBase]: For 4807/4807 co-relation queries the response was YES. [2024-06-14 12:40:09,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 390 events. 216/390 cut-off events. For 4807/4807 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1364 event pairs, 49 based on Foata normal form. 1/389 useless extension candidates. Maximal degree in co-relation 1895. Up to 319 conditions per place. [2024-06-14 12:40:09,486 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 23 changer transitions 0/73 dead transitions. [2024-06-14 12:40:09,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 644 flow [2024-06-14 12:40:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 12:40:09,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-14 12:40:09,487 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 424 flow. Second operand 7 states and 89 transitions. [2024-06-14 12:40:09,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 644 flow [2024-06-14 12:40:09,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 584 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:09,492 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 436 flow [2024-06-14 12:40:09,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-06-14 12:40:09,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-14 12:40:09,493 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 436 flow [2024-06-14 12:40:09,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:09,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:09,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:09,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:40:09,494 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)] === [2024-06-14 12:40:09,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash -838475328, now seen corresponding path program 1 times [2024-06-14 12:40:09,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:09,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504026844] [2024-06-14 12:40:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:09,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:10,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:10,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:10,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504026844] [2024-06-14 12:40:10,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504026844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:10,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:10,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:10,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490867085] [2024-06-14 12:40:10,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:10,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:10,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:10,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:10,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:10,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 436 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) [2024-06-14 12:40:10,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:10,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:10,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:10,251 INFO L124 PetriNetUnfolderBase]: 254/452 cut-off events. [2024-06-14 12:40:10,252 INFO L125 PetriNetUnfolderBase]: For 6684/6684 co-relation queries the response was YES. [2024-06-14 12:40:10,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 452 events. 254/452 cut-off events. For 6684/6684 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1665 event pairs, 56 based on Foata normal form. 6/456 useless extension candidates. Maximal degree in co-relation 2207. Up to 308 conditions per place. [2024-06-14 12:40:10,255 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 60 selfloop transitions, 24 changer transitions 0/86 dead transitions. [2024-06-14 12:40:10,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 724 flow [2024-06-14 12:40:10,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 12:40:10,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-14 12:40:10,256 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 436 flow. Second operand 8 states and 106 transitions. [2024-06-14 12:40:10,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 724 flow [2024-06-14 12:40:10,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 685 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:10,264 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 505 flow [2024-06-14 12:40:10,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-06-14 12:40:10,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-14 12:40:10,266 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 505 flow [2024-06-14 12:40:10,266 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) [2024-06-14 12:40:10,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:10,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:10,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:40:10,267 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)] === [2024-06-14 12:40:10,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1471097468, now seen corresponding path program 2 times [2024-06-14 12:40:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:10,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471233562] [2024-06-14 12:40:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:10,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:10,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:10,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471233562] [2024-06-14 12:40:10,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471233562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:10,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:10,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:10,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290893374] [2024-06-14 12:40:10,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:10,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:10,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:10,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:10,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:10,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 505 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) [2024-06-14 12:40:10,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:10,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:10,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:11,064 INFO L124 PetriNetUnfolderBase]: 278/491 cut-off events. [2024-06-14 12:40:11,064 INFO L125 PetriNetUnfolderBase]: For 7857/7857 co-relation queries the response was YES. [2024-06-14 12:40:11,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 491 events. 278/491 cut-off events. For 7857/7857 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1832 event pairs, 55 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 2608. Up to 447 conditions per place. [2024-06-14 12:40:11,067 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-06-14 12:40:11,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 781 flow [2024-06-14 12:40:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 12:40:11,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-14 12:40:11,069 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 505 flow. Second operand 8 states and 95 transitions. [2024-06-14 12:40:11,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 781 flow [2024-06-14 12:40:11,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 754 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:11,076 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 557 flow [2024-06-14 12:40:11,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=557, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-06-14 12:40:11,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-14 12:40:11,077 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 557 flow [2024-06-14 12:40:11,077 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) [2024-06-14 12:40:11,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:11,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:11,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:40:11,078 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)] === [2024-06-14 12:40:11,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash 365253056, now seen corresponding path program 3 times [2024-06-14 12:40:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:11,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891386247] [2024-06-14 12:40:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:11,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:11,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891386247] [2024-06-14 12:40:11,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891386247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:11,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:11,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:11,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880754923] [2024-06-14 12:40:11,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:11,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:11,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:11,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:11,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:11,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:11,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 557 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) [2024-06-14 12:40:11,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:11,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:11,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:11,838 INFO L124 PetriNetUnfolderBase]: 272/482 cut-off events. [2024-06-14 12:40:11,838 INFO L125 PetriNetUnfolderBase]: For 8200/8200 co-relation queries the response was YES. [2024-06-14 12:40:11,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2613 conditions, 482 events. 272/482 cut-off events. For 8200/8200 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1791 event pairs, 53 based on Foata normal form. 3/483 useless extension candidates. Maximal degree in co-relation 2570. Up to 455 conditions per place. [2024-06-14 12:40:11,841 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2024-06-14 12:40:11,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 83 transitions, 743 flow [2024-06-14 12:40:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 12:40:11,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 12:40:11,844 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 557 flow. Second operand 8 states and 90 transitions. [2024-06-14 12:40:11,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 83 transitions, 743 flow [2024-06-14 12:40:11,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 703 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:11,857 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 546 flow [2024-06-14 12:40:11,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=546, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-06-14 12:40:11,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-14 12:40:11,858 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 546 flow [2024-06-14 12:40:11,858 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) [2024-06-14 12:40:11,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:11,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:11,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:40:11,858 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)] === [2024-06-14 12:40:11,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash 364985929, now seen corresponding path program 3 times [2024-06-14 12:40:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:11,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078073416] [2024-06-14 12:40:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:11,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:12,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078073416] [2024-06-14 12:40:12,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078073416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:12,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:12,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:12,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759595870] [2024-06-14 12:40:12,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:12,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:12,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:12,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:12,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:12,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:12,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 546 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:12,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:12,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:12,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:12,539 INFO L124 PetriNetUnfolderBase]: 270/479 cut-off events. [2024-06-14 12:40:12,539 INFO L125 PetriNetUnfolderBase]: For 8062/8062 co-relation queries the response was YES. [2024-06-14 12:40:12,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2581 conditions, 479 events. 270/479 cut-off events. For 8062/8062 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1777 event pairs, 54 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2537. Up to 458 conditions per place. [2024-06-14 12:40:12,542 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 67 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-06-14 12:40:12,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 80 transitions, 718 flow [2024-06-14 12:40:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 12:40:12,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-14 12:40:12,543 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 546 flow. Second operand 7 states and 80 transitions. [2024-06-14 12:40:12,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 80 transitions, 718 flow [2024-06-14 12:40:12,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 80 transitions, 682 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:12,551 INFO L231 Difference]: Finished difference. Result has 87 places, 73 transitions, 537 flow [2024-06-14 12:40:12,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=537, PETRI_PLACES=87, PETRI_TRANSITIONS=73} [2024-06-14 12:40:12,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-14 12:40:12,552 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 73 transitions, 537 flow [2024-06-14 12:40:12,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:12,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:12,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:12,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:40:12,552 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)] === [2024-06-14 12:40:12,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:12,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1478449118, now seen corresponding path program 4 times [2024-06-14 12:40:12,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:12,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681908365] [2024-06-14 12:40:12,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:12,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:13,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681908365] [2024-06-14 12:40:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681908365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:13,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:13,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:13,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005416457] [2024-06-14 12:40:13,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:13,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:13,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:13,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:13,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:13,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:13,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 73 transitions, 537 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) [2024-06-14 12:40:13,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:13,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:13,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:13,311 INFO L124 PetriNetUnfolderBase]: 264/470 cut-off events. [2024-06-14 12:40:13,311 INFO L125 PetriNetUnfolderBase]: For 8503/8503 co-relation queries the response was YES. [2024-06-14 12:40:13,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 470 events. 264/470 cut-off events. For 8503/8503 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1736 event pairs, 51 based on Foata normal form. 3/471 useless extension candidates. Maximal degree in co-relation 2451. Up to 416 conditions per place. [2024-06-14 12:40:13,314 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 19 changer transitions 0/87 dead transitions. [2024-06-14 12:40:13,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 761 flow [2024-06-14 12:40:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:13,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 12:40:13,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:40:13,315 INFO L175 Difference]: Start difference. First operand has 87 places, 73 transitions, 537 flow. Second operand 8 states and 96 transitions. [2024-06-14 12:40:13,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 761 flow [2024-06-14 12:40:13,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 87 transitions, 716 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:13,324 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 563 flow [2024-06-14 12:40:13,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-06-14 12:40:13,325 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-14 12:40:13,325 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 563 flow [2024-06-14 12:40:13,325 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) [2024-06-14 12:40:13,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:13,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:13,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:40:13,325 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)] === [2024-06-14 12:40:13,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:13,326 INFO L85 PathProgramCache]: Analyzing trace with hash -341263200, now seen corresponding path program 1 times [2024-06-14 12:40:13,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:13,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524498303] [2024-06-14 12:40:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:13,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:14,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:14,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524498303] [2024-06-14 12:40:14,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524498303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:14,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:14,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509145781] [2024-06-14 12:40:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:14,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:14,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:14,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:14,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:40:14,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 563 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:14,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:14,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:40:14,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:14,291 INFO L124 PetriNetUnfolderBase]: 256/466 cut-off events. [2024-06-14 12:40:14,291 INFO L125 PetriNetUnfolderBase]: For 9227/9227 co-relation queries the response was YES. [2024-06-14 12:40:14,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 466 events. 256/466 cut-off events. For 9227/9227 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1781 event pairs, 34 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2490. Up to 336 conditions per place. [2024-06-14 12:40:14,294 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 63 selfloop transitions, 20 changer transitions 0/93 dead transitions. [2024-06-14 12:40:14,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 823 flow [2024-06-14 12:40:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 12:40:14,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-14 12:40:14,296 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 563 flow. Second operand 8 states and 105 transitions. [2024-06-14 12:40:14,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 823 flow [2024-06-14 12:40:14,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 770 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:14,306 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 564 flow [2024-06-14 12:40:14,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-14 12:40:14,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-14 12:40:14,308 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 564 flow [2024-06-14 12:40:14,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:14,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:14,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:14,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:40:14,309 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)] === [2024-06-14 12:40:14,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -689629958, now seen corresponding path program 2 times [2024-06-14 12:40:14,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:14,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207705731] [2024-06-14 12:40:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:14,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:15,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:15,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207705731] [2024-06-14 12:40:15,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207705731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:15,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:15,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:15,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455946880] [2024-06-14 12:40:15,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:15,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:15,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:15,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:15,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:15,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 12:40:15,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 564 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:15,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:15,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 12:40:15,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:15,330 INFO L124 PetriNetUnfolderBase]: 252/460 cut-off events. [2024-06-14 12:40:15,331 INFO L125 PetriNetUnfolderBase]: For 9292/9292 co-relation queries the response was YES. [2024-06-14 12:40:15,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 460 events. 252/460 cut-off events. For 9292/9292 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1754 event pairs, 47 based on Foata normal form. 2/460 useless extension candidates. Maximal degree in co-relation 2427. Up to 365 conditions per place. [2024-06-14 12:40:15,334 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 61 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2024-06-14 12:40:15,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 766 flow [2024-06-14 12:40:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:15,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:40:15,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-14 12:40:15,336 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 564 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:40:15,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 766 flow [2024-06-14 12:40:15,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 92 transitions, 720 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:15,347 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 565 flow [2024-06-14 12:40:15,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=565, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2024-06-14 12:40:15,347 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-14 12:40:15,347 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 565 flow [2024-06-14 12:40:15,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:15,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:15,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:15,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:40:15,348 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)] === [2024-06-14 12:40:15,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash -689629834, now seen corresponding path program 1 times [2024-06-14 12:40:15,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:15,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710854253] [2024-06-14 12:40:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:15,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:15,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:15,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710854253] [2024-06-14 12:40:15,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710854253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:15,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:15,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:15,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232888007] [2024-06-14 12:40:15,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:15,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:15,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:16,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:16,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 565 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:16,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:16,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:16,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:16,188 INFO L124 PetriNetUnfolderBase]: 268/478 cut-off events. [2024-06-14 12:40:16,188 INFO L125 PetriNetUnfolderBase]: For 9677/9677 co-relation queries the response was YES. [2024-06-14 12:40:16,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 478 events. 268/478 cut-off events. For 9677/9677 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1798 event pairs, 53 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2518. Up to 373 conditions per place. [2024-06-14 12:40:16,191 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 27 changer transitions 0/95 dead transitions. [2024-06-14 12:40:16,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 859 flow [2024-06-14 12:40:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-14 12:40:16,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 12:40:16,193 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 565 flow. Second operand 8 states and 102 transitions. [2024-06-14 12:40:16,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 859 flow [2024-06-14 12:40:16,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 801 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:40:16,203 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 594 flow [2024-06-14 12:40:16,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-14 12:40:16,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 12:40:16,203 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 594 flow [2024-06-14 12:40:16,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:16,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:16,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:16,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:40:16,204 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)] === [2024-06-14 12:40:16,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:16,204 INFO L85 PathProgramCache]: Analyzing trace with hash -686828674, now seen corresponding path program 2 times [2024-06-14 12:40:16,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:16,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139395281] [2024-06-14 12:40:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:16,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:16,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139395281] [2024-06-14 12:40:16,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139395281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:16,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:16,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:16,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150232869] [2024-06-14 12:40:16,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:16,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:16,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:16,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:16,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 594 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:16,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:16,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:16,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:17,153 INFO L124 PetriNetUnfolderBase]: 271/483 cut-off events. [2024-06-14 12:40:17,153 INFO L125 PetriNetUnfolderBase]: For 10433/10433 co-relation queries the response was YES. [2024-06-14 12:40:17,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 483 events. 271/483 cut-off events. For 10433/10433 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1829 event pairs, 53 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2557. Up to 410 conditions per place. [2024-06-14 12:40:17,157 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2024-06-14 12:40:17,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 93 transitions, 818 flow [2024-06-14 12:40:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 12:40:17,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 12:40:17,158 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 594 flow. Second operand 8 states and 98 transitions. [2024-06-14 12:40:17,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 93 transitions, 818 flow [2024-06-14 12:40:17,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 779 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:17,170 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 630 flow [2024-06-14 12:40:17,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=89, 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=630, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-06-14 12:40:17,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-14 12:40:17,171 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 630 flow [2024-06-14 12:40:17,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:17,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:17,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:17,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:40:17,171 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)] === [2024-06-14 12:40:17,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -686833324, now seen corresponding path program 3 times [2024-06-14 12:40:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990568788] [2024-06-14 12:40:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:17,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:17,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:17,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990568788] [2024-06-14 12:40:17,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990568788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:17,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:17,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:17,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109504618] [2024-06-14 12:40:17,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:17,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:17,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:17,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:17,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:17,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:17,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 630 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:17,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:17,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:17,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:18,087 INFO L124 PetriNetUnfolderBase]: 274/488 cut-off events. [2024-06-14 12:40:18,087 INFO L125 PetriNetUnfolderBase]: For 11230/11230 co-relation queries the response was YES. [2024-06-14 12:40:18,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2691 conditions, 488 events. 274/488 cut-off events. For 11230/11230 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1839 event pairs, 49 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 2641. Up to 409 conditions per place. [2024-06-14 12:40:18,090 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 29 changer transitions 0/96 dead transitions. [2024-06-14 12:40:18,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 96 transitions, 864 flow [2024-06-14 12:40:18,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:40:18,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-14 12:40:18,093 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 630 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:40:18,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 96 transitions, 864 flow [2024-06-14 12:40:18,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 811 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:18,104 INFO L231 Difference]: Finished difference. Result has 100 places, 84 transitions, 665 flow [2024-06-14 12:40:18,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=91, 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=665, PETRI_PLACES=100, PETRI_TRANSITIONS=84} [2024-06-14 12:40:18,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-14 12:40:18,105 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 84 transitions, 665 flow [2024-06-14 12:40:18,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:18,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:18,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:18,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:40:18,106 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)] === [2024-06-14 12:40:18,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:18,106 INFO L85 PathProgramCache]: Analyzing trace with hash -571542154, now seen corresponding path program 4 times [2024-06-14 12:40:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462497083] [2024-06-14 12:40:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:18,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:18,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462497083] [2024-06-14 12:40:18,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462497083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:18,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:18,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:18,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684831202] [2024-06-14 12:40:18,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:18,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:18,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:18,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:18,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:18,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:18,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 84 transitions, 665 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:18,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:18,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:18,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:19,021 INFO L124 PetriNetUnfolderBase]: 277/493 cut-off events. [2024-06-14 12:40:19,021 INFO L125 PetriNetUnfolderBase]: For 12105/12105 co-relation queries the response was YES. [2024-06-14 12:40:19,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 493 events. 277/493 cut-off events. For 12105/12105 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1871 event pairs, 49 based on Foata normal form. 1/492 useless extension candidates. Maximal degree in co-relation 2718. Up to 400 conditions per place. [2024-06-14 12:40:19,029 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 33 changer transitions 0/105 dead transitions. [2024-06-14 12:40:19,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 993 flow [2024-06-14 12:40:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:40:19,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-14 12:40:19,033 INFO L175 Difference]: Start difference. First operand has 100 places, 84 transitions, 665 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:40:19,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 993 flow [2024-06-14 12:40:19,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 923 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:19,046 INFO L231 Difference]: Finished difference. Result has 102 places, 86 transitions, 691 flow [2024-06-14 12:40:19,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=691, PETRI_PLACES=102, PETRI_TRANSITIONS=86} [2024-06-14 12:40:19,051 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-14 12:40:19,051 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 86 transitions, 691 flow [2024-06-14 12:40:19,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:19,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:19,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:40:19,052 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)] === [2024-06-14 12:40:19,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash -571537318, now seen corresponding path program 1 times [2024-06-14 12:40:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:19,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748304641] [2024-06-14 12:40:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:19,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:19,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:19,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748304641] [2024-06-14 12:40:19,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748304641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:19,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:19,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:19,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140183428] [2024-06-14 12:40:19,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:19,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:19,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:19,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:19,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:19,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:19,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 86 transitions, 691 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:19,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:19,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:19,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:19,814 INFO L124 PetriNetUnfolderBase]: 286/508 cut-off events. [2024-06-14 12:40:19,814 INFO L125 PetriNetUnfolderBase]: For 12865/12865 co-relation queries the response was YES. [2024-06-14 12:40:19,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2830 conditions, 508 events. 286/508 cut-off events. For 12865/12865 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1940 event pairs, 50 based on Foata normal form. 3/509 useless extension candidates. Maximal degree in co-relation 2778. Up to 341 conditions per place. [2024-06-14 12:40:19,817 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 35 changer transitions 0/109 dead transitions. [2024-06-14 12:40:19,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 109 transitions, 1029 flow [2024-06-14 12:40:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:19,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-14 12:40:19,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-14 12:40:19,818 INFO L175 Difference]: Start difference. First operand has 102 places, 86 transitions, 691 flow. Second operand 8 states and 111 transitions. [2024-06-14 12:40:19,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 109 transitions, 1029 flow [2024-06-14 12:40:19,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 948 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:19,832 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 701 flow [2024-06-14 12:40:19,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=701, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-06-14 12:40:19,833 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-14 12:40:19,833 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 701 flow [2024-06-14 12:40:19,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:19,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:19,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:19,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:40:19,838 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)] === [2024-06-14 12:40:19,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash -571364338, now seen corresponding path program 2 times [2024-06-14 12:40:19,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:19,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903205546] [2024-06-14 12:40:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:19,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:20,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:20,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903205546] [2024-06-14 12:40:20,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903205546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:20,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:20,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:20,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597509273] [2024-06-14 12:40:20,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:20,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:20,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:20,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:20,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:20,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 701 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:20,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:20,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:20,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:20,608 INFO L124 PetriNetUnfolderBase]: 310/547 cut-off events. [2024-06-14 12:40:20,608 INFO L125 PetriNetUnfolderBase]: For 15063/15063 co-relation queries the response was YES. [2024-06-14 12:40:20,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3124 conditions, 547 events. 310/547 cut-off events. For 15063/15063 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2149 event pairs, 54 based on Foata normal form. 3/548 useless extension candidates. Maximal degree in co-relation 3071. Up to 361 conditions per place. [2024-06-14 12:40:20,612 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 77 selfloop transitions, 34 changer transitions 0/113 dead transitions. [2024-06-14 12:40:20,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 113 transitions, 1129 flow [2024-06-14 12:40:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:20,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-14 12:40:20,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-14 12:40:20,613 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 701 flow. Second operand 8 states and 111 transitions. [2024-06-14 12:40:20,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 113 transitions, 1129 flow [2024-06-14 12:40:20,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 1037 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:20,632 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 722 flow [2024-06-14 12:40:20,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=722, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-14 12:40:20,632 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-14 12:40:20,632 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 722 flow [2024-06-14 12:40:20,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:20,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:20,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:20,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:40:20,633 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)] === [2024-06-14 12:40:20,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash -571364524, now seen corresponding path program 5 times [2024-06-14 12:40:20,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:20,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9612981] [2024-06-14 12:40:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:20,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:21,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:21,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9612981] [2024-06-14 12:40:21,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9612981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:21,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:21,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:21,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786337142] [2024-06-14 12:40:21,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:21,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:21,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:21,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:21,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:21,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:21,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 722 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:21,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:21,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:21,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:21,565 INFO L124 PetriNetUnfolderBase]: 313/552 cut-off events. [2024-06-14 12:40:21,565 INFO L125 PetriNetUnfolderBase]: For 15274/15274 co-relation queries the response was YES. [2024-06-14 12:40:21,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 552 events. 313/552 cut-off events. For 15274/15274 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2171 event pairs, 55 based on Foata normal form. 1/551 useless extension candidates. Maximal degree in co-relation 3118. Up to 479 conditions per place. [2024-06-14 12:40:21,568 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 78 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-14 12:40:21,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 105 transitions, 972 flow [2024-06-14 12:40:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:21,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 12:40:21,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-14 12:40:21,569 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 722 flow. Second operand 8 states and 97 transitions. [2024-06-14 12:40:21,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 105 transitions, 972 flow [2024-06-14 12:40:21,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 105 transitions, 923 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:21,587 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 750 flow [2024-06-14 12:40:21,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=673, 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=750, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-14 12:40:21,587 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-14 12:40:21,587 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 750 flow [2024-06-14 12:40:21,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:21,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:21,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:21,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:40:21,588 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)] === [2024-06-14 12:40:21,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:21,588 INFO L85 PathProgramCache]: Analyzing trace with hash -222930620, now seen corresponding path program 3 times [2024-06-14 12:40:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:21,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278745466] [2024-06-14 12:40:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:21,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:22,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:22,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278745466] [2024-06-14 12:40:22,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278745466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:22,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:22,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:22,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460047603] [2024-06-14 12:40:22,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:22,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:22,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:22,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:22,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:22,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:22,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:22,342 INFO L124 PetriNetUnfolderBase]: 307/543 cut-off events. [2024-06-14 12:40:22,342 INFO L125 PetriNetUnfolderBase]: For 15725/15725 co-relation queries the response was YES. [2024-06-14 12:40:22,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3064 conditions, 543 events. 307/543 cut-off events. For 15725/15725 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2140 event pairs, 54 based on Foata normal form. 3/544 useless extension candidates. Maximal degree in co-relation 3009. Up to 362 conditions per place. [2024-06-14 12:40:22,345 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 75 selfloop transitions, 35 changer transitions 0/112 dead transitions. [2024-06-14 12:40:22,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 1076 flow [2024-06-14 12:40:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:22,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:22,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 12:40:22,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2024-06-14 12:40:22,346 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 750 flow. Second operand 8 states and 107 transitions. [2024-06-14 12:40:22,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 1076 flow [2024-06-14 12:40:22,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 112 transitions, 1015 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:22,367 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 765 flow [2024-06-14 12:40:22,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=765, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2024-06-14 12:40:22,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 12:40:22,368 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 765 flow [2024-06-14 12:40:22,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:22,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:22,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:22,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:40:22,369 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)] === [2024-06-14 12:40:22,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1649190648, now seen corresponding path program 1 times [2024-06-14 12:40:22,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:22,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317827806] [2024-06-14 12:40:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:22,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:22,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317827806] [2024-06-14 12:40:22,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317827806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:22,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:22,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:22,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85099018] [2024-06-14 12:40:22,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:22,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:23,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:23,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 765 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) [2024-06-14 12:40:23,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:23,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:23,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:23,345 INFO L124 PetriNetUnfolderBase]: 303/537 cut-off events. [2024-06-14 12:40:23,345 INFO L125 PetriNetUnfolderBase]: For 15467/15467 co-relation queries the response was YES. [2024-06-14 12:40:23,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 537 events. 303/537 cut-off events. For 15467/15467 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2092 event pairs, 43 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 2998. Up to 505 conditions per place. [2024-06-14 12:40:23,348 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 91 selfloop transitions, 14 changer transitions 0/107 dead transitions. [2024-06-14 12:40:23,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 107 transitions, 1023 flow [2024-06-14 12:40:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:23,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 12:40:23,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:40:23,348 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 765 flow. Second operand 9 states and 99 transitions. [2024-06-14 12:40:23,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 107 transitions, 1023 flow [2024-06-14 12:40:23,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 947 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:23,367 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 750 flow [2024-06-14 12:40:23,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2024-06-14 12:40:23,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-14 12:40:23,368 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 750 flow [2024-06-14 12:40:23,368 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) [2024-06-14 12:40:23,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:23,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:23,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:40:23,368 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)] === [2024-06-14 12:40:23,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:23,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1570337100, now seen corresponding path program 4 times [2024-06-14 12:40:23,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:23,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337641831] [2024-06-14 12:40:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:23,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:23,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:23,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337641831] [2024-06-14 12:40:23,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337641831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:23,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405242290] [2024-06-14 12:40:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:23,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:23,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:23,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:23,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:23,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:24,128 INFO L124 PetriNetUnfolderBase]: 312/552 cut-off events. [2024-06-14 12:40:24,128 INFO L125 PetriNetUnfolderBase]: For 16683/16683 co-relation queries the response was YES. [2024-06-14 12:40:24,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 552 events. 312/552 cut-off events. For 16683/16683 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2184 event pairs, 47 based on Foata normal form. 3/553 useless extension candidates. Maximal degree in co-relation 3010. Up to 477 conditions per place. [2024-06-14 12:40:24,131 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 92 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2024-06-14 12:40:24,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 1090 flow [2024-06-14 12:40:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 12:40:24,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-14 12:40:24,132 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 750 flow. Second operand 8 states and 99 transitions. [2024-06-14 12:40:24,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 1090 flow [2024-06-14 12:40:24,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 1042 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:24,156 INFO L231 Difference]: Finished difference. Result has 114 places, 98 transitions, 761 flow [2024-06-14 12:40:24,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=106, 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=761, PETRI_PLACES=114, PETRI_TRANSITIONS=98} [2024-06-14 12:40:24,157 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-14 12:40:24,157 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 98 transitions, 761 flow [2024-06-14 12:40:24,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:24,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:24,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:24,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:40:24,157 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)] === [2024-06-14 12:40:24,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1640612824, now seen corresponding path program 6 times [2024-06-14 12:40:24,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:24,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836787168] [2024-06-14 12:40:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:24,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:24,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:24,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836787168] [2024-06-14 12:40:24,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836787168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:24,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:24,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:24,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640441857] [2024-06-14 12:40:24,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:24,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:24,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:24,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:24,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 98 transitions, 761 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:24,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:24,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:24,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:24,981 INFO L124 PetriNetUnfolderBase]: 310/549 cut-off events. [2024-06-14 12:40:24,981 INFO L125 PetriNetUnfolderBase]: For 16343/16343 co-relation queries the response was YES. [2024-06-14 12:40:24,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3047 conditions, 549 events. 310/549 cut-off events. For 16343/16343 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2176 event pairs, 53 based on Foata normal form. 1/548 useless extension candidates. Maximal degree in co-relation 2989. Up to 525 conditions per place. [2024-06-14 12:40:24,985 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 91 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2024-06-14 12:40:24,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 106 transitions, 987 flow [2024-06-14 12:40:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:40:24,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 12:40:24,986 INFO L175 Difference]: Start difference. First operand has 114 places, 98 transitions, 761 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:40:24,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 106 transitions, 987 flow [2024-06-14 12:40:25,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 106 transitions, 908 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:25,006 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 713 flow [2024-06-14 12:40:25,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=713, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-14 12:40:25,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 12:40:25,007 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 713 flow [2024-06-14 12:40:25,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:25,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:25,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:25,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:40:25,007 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)] === [2024-06-14 12:40:25,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2059421098, now seen corresponding path program 5 times [2024-06-14 12:40:25,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:25,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333808452] [2024-06-14 12:40:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:25,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:25,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:25,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333808452] [2024-06-14 12:40:25,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333808452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:25,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:25,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:25,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318391539] [2024-06-14 12:40:25,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:25,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:25,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:25,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:25,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:25,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:25,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 713 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:25,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:25,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:25,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:25,778 INFO L124 PetriNetUnfolderBase]: 319/564 cut-off events. [2024-06-14 12:40:25,778 INFO L125 PetriNetUnfolderBase]: For 18328/18328 co-relation queries the response was YES. [2024-06-14 12:40:25,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3048 conditions, 564 events. 319/564 cut-off events. For 18328/18328 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2268 event pairs, 53 based on Foata normal form. 3/565 useless extension candidates. Maximal degree in co-relation 2989. Up to 482 conditions per place. [2024-06-14 12:40:25,782 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 93 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2024-06-14 12:40:25,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 115 transitions, 1059 flow [2024-06-14 12:40:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:25,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:25,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 12:40:25,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 12:40:25,788 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 713 flow. Second operand 8 states and 100 transitions. [2024-06-14 12:40:25,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 115 transitions, 1059 flow [2024-06-14 12:40:25,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 1007 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:25,812 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 720 flow [2024-06-14 12:40:25,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2024-06-14 12:40:25,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 12:40:25,812 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 720 flow [2024-06-14 12:40:25,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:25,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:25,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:25,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:40:25,813 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)] === [2024-06-14 12:40:25,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1648893730, now seen corresponding path program 6 times [2024-06-14 12:40:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:25,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217727671] [2024-06-14 12:40:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:26,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:26,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217727671] [2024-06-14 12:40:26,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217727671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:26,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:26,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621222792] [2024-06-14 12:40:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:26,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:26,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:26,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:26,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:26,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:26,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:26,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:26,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:26,565 INFO L124 PetriNetUnfolderBase]: 313/555 cut-off events. [2024-06-14 12:40:26,565 INFO L125 PetriNetUnfolderBase]: For 17565/17565 co-relation queries the response was YES. [2024-06-14 12:40:26,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2937 conditions, 555 events. 313/555 cut-off events. For 17565/17565 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2229 event pairs, 51 based on Foata normal form. 3/556 useless extension candidates. Maximal degree in co-relation 2878. Up to 515 conditions per place. [2024-06-14 12:40:26,568 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 13 changer transitions 0/112 dead transitions. [2024-06-14 12:40:26,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 970 flow [2024-06-14 12:40:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:26,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 12:40:26,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-14 12:40:26,569 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 720 flow. Second operand 8 states and 93 transitions. [2024-06-14 12:40:26,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 970 flow [2024-06-14 12:40:26,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 931 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:26,590 INFO L231 Difference]: Finished difference. Result has 118 places, 100 transitions, 712 flow [2024-06-14 12:40:26,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=110, 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=712, PETRI_PLACES=118, PETRI_TRANSITIONS=100} [2024-06-14 12:40:26,590 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-14 12:40:26,590 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 100 transitions, 712 flow [2024-06-14 12:40:26,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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) [2024-06-14 12:40:26,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:26,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:26,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:40:26,591 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)] === [2024-06-14 12:40:26,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:26,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1649201560, now seen corresponding path program 1 times [2024-06-14 12:40:26,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:26,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348251705] [2024-06-14 12:40:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:26,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:27,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348251705] [2024-06-14 12:40:27,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348251705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:27,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:27,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126858698] [2024-06-14 12:40:27,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:27,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:27,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:27,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:27,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:27,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 100 transitions, 712 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) [2024-06-14 12:40:27,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:27,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:27,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:27,895 INFO L124 PetriNetUnfolderBase]: 310/550 cut-off events. [2024-06-14 12:40:27,895 INFO L125 PetriNetUnfolderBase]: For 16703/16703 co-relation queries the response was YES. [2024-06-14 12:40:27,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 550 events. 310/550 cut-off events. For 16703/16703 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2166 event pairs, 48 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 2795. Up to 520 conditions per place. [2024-06-14 12:40:27,898 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 96 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-06-14 12:40:27,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 111 transitions, 954 flow [2024-06-14 12:40:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 12:40:27,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 12:40:27,900 INFO L175 Difference]: Start difference. First operand has 118 places, 100 transitions, 712 flow. Second operand 9 states and 97 transitions. [2024-06-14 12:40:27,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 111 transitions, 954 flow [2024-06-14 12:40:27,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 111 transitions, 912 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:27,918 INFO L231 Difference]: Finished difference. Result has 119 places, 100 transitions, 700 flow [2024-06-14 12:40:27,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=110, 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=9, PETRI_FLOW=700, PETRI_PLACES=119, PETRI_TRANSITIONS=100} [2024-06-14 12:40:27,918 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-14 12:40:27,919 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 700 flow [2024-06-14 12:40:27,919 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) [2024-06-14 12:40:27,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:27,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:27,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:40:27,919 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)] === [2024-06-14 12:40:27,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1989223650, now seen corresponding path program 1 times [2024-06-14 12:40:27,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:27,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230788437] [2024-06-14 12:40:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:27,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:28,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:28,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230788437] [2024-06-14 12:40:28,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230788437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:28,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:28,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:28,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104104978] [2024-06-14 12:40:28,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:28,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:28,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:28,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:28,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:28,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:28,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:28,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:28,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:28,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:28,817 INFO L124 PetriNetUnfolderBase]: 314/558 cut-off events. [2024-06-14 12:40:28,817 INFO L125 PetriNetUnfolderBase]: For 17516/17516 co-relation queries the response was YES. [2024-06-14 12:40:28,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 558 events. 314/558 cut-off events. For 17516/17516 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2233 event pairs, 36 based on Foata normal form. 2/558 useless extension candidates. Maximal degree in co-relation 2828. Up to 375 conditions per place. [2024-06-14 12:40:28,820 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 81 selfloop transitions, 37 changer transitions 0/120 dead transitions. [2024-06-14 12:40:28,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 120 transitions, 1062 flow [2024-06-14 12:40:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:40:28,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:40:28,821 INFO L175 Difference]: Start difference. First operand has 119 places, 100 transitions, 700 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:40:28,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 120 transitions, 1062 flow [2024-06-14 12:40:28,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 120 transitions, 1026 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:28,843 INFO L231 Difference]: Finished difference. Result has 120 places, 101 transitions, 750 flow [2024-06-14 12:40:28,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=750, PETRI_PLACES=120, PETRI_TRANSITIONS=101} [2024-06-14 12:40:28,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-14 12:40:28,844 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 101 transitions, 750 flow [2024-06-14 12:40:28,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:28,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:28,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:28,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:40:28,845 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)] === [2024-06-14 12:40:28,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash 85641122, now seen corresponding path program 2 times [2024-06-14 12:40:28,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:28,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666326095] [2024-06-14 12:40:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:28,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:29,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:29,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666326095] [2024-06-14 12:40:29,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666326095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:29,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:29,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:29,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899890582] [2024-06-14 12:40:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:29,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:29,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:29,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 101 transitions, 750 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:29,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:29,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:29,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:29,729 INFO L124 PetriNetUnfolderBase]: 329/587 cut-off events. [2024-06-14 12:40:29,729 INFO L125 PetriNetUnfolderBase]: For 19952/19952 co-relation queries the response was YES. [2024-06-14 12:40:29,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 587 events. 329/587 cut-off events. For 19952/19952 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2434 event pairs, 54 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3076. Up to 456 conditions per place. [2024-06-14 12:40:29,733 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 83 selfloop transitions, 37 changer transitions 0/122 dead transitions. [2024-06-14 12:40:29,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 122 transitions, 1132 flow [2024-06-14 12:40:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 12:40:29,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 12:40:29,741 INFO L175 Difference]: Start difference. First operand has 120 places, 101 transitions, 750 flow. Second operand 9 states and 113 transitions. [2024-06-14 12:40:29,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 122 transitions, 1132 flow [2024-06-14 12:40:29,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 1051 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:29,768 INFO L231 Difference]: Finished difference. Result has 124 places, 104 transitions, 779 flow [2024-06-14 12:40:29,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=779, PETRI_PLACES=124, PETRI_TRANSITIONS=104} [2024-06-14 12:40:29,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 93 predicate places. [2024-06-14 12:40:29,769 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 104 transitions, 779 flow [2024-06-14 12:40:29,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:29,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:29,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:29,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:40:29,769 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)] === [2024-06-14 12:40:29,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:29,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1987345980, now seen corresponding path program 3 times [2024-06-14 12:40:29,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:29,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761187340] [2024-06-14 12:40:29,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:29,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:30,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:30,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761187340] [2024-06-14 12:40:30,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761187340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:30,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:30,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:30,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814549124] [2024-06-14 12:40:30,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:30,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:30,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:30,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:30,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 104 transitions, 779 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:30,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:30,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:30,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:30,708 INFO L124 PetriNetUnfolderBase]: 326/582 cut-off events. [2024-06-14 12:40:30,708 INFO L125 PetriNetUnfolderBase]: For 19528/19528 co-relation queries the response was YES. [2024-06-14 12:40:30,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3065 conditions, 582 events. 326/582 cut-off events. For 19528/19528 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2403 event pairs, 55 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 3002. Up to 468 conditions per place. [2024-06-14 12:40:30,711 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 36 changer transitions 0/120 dead transitions. [2024-06-14 12:40:30,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 120 transitions, 1053 flow [2024-06-14 12:40:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:40:30,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:40:30,713 INFO L175 Difference]: Start difference. First operand has 124 places, 104 transitions, 779 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:40:30,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 120 transitions, 1053 flow [2024-06-14 12:40:30,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 120 transitions, 988 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:30,745 INFO L231 Difference]: Finished difference. Result has 127 places, 104 transitions, 790 flow [2024-06-14 12:40:30,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=790, PETRI_PLACES=127, PETRI_TRANSITIONS=104} [2024-06-14 12:40:30,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-14 12:40:30,746 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 104 transitions, 790 flow [2024-06-14 12:40:30,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:30,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:30,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:30,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:40:30,746 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)] === [2024-06-14 12:40:30,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:30,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1523338263, now seen corresponding path program 1 times [2024-06-14 12:40:30,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:30,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217845212] [2024-06-14 12:40:30,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:30,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217845212] [2024-06-14 12:40:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217845212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:31,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779010437] [2024-06-14 12:40:31,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:31,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:31,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:31,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:31,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:31,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:31,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 104 transitions, 790 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:31,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:31,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:31,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:31,803 INFO L124 PetriNetUnfolderBase]: 345/613 cut-off events. [2024-06-14 12:40:31,803 INFO L125 PetriNetUnfolderBase]: For 22820/22820 co-relation queries the response was YES. [2024-06-14 12:40:31,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3280 conditions, 613 events. 345/613 cut-off events. For 22820/22820 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2576 event pairs, 51 based on Foata normal form. 3/614 useless extension candidates. Maximal degree in co-relation 3216. Up to 317 conditions per place. [2024-06-14 12:40:31,806 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 75 selfloop transitions, 58 changer transitions 0/135 dead transitions. [2024-06-14 12:40:31,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 1232 flow [2024-06-14 12:40:31,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:40:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:40:31,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:40:31,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 12:40:31,811 INFO L175 Difference]: Start difference. First operand has 127 places, 104 transitions, 790 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:40:31,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 1232 flow [2024-06-14 12:40:31,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 135 transitions, 1162 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:31,842 INFO L231 Difference]: Finished difference. Result has 133 places, 110 transitions, 907 flow [2024-06-14 12:40:31,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=907, PETRI_PLACES=133, PETRI_TRANSITIONS=110} [2024-06-14 12:40:31,845 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-14 12:40:31,845 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 110 transitions, 907 flow [2024-06-14 12:40:31,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:31,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:31,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:31,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:40:31,849 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)] === [2024-06-14 12:40:31,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:31,850 INFO L85 PathProgramCache]: Analyzing trace with hash 183148420, now seen corresponding path program 4 times [2024-06-14 12:40:31,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:31,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935981292] [2024-06-14 12:40:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:31,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:32,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:32,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935981292] [2024-06-14 12:40:32,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935981292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:32,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:32,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:32,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030814494] [2024-06-14 12:40:32,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:32,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:32,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:32,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:32,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:32,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:32,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 110 transitions, 907 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:32,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:32,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:32,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:32,891 INFO L124 PetriNetUnfolderBase]: 349/621 cut-off events. [2024-06-14 12:40:32,891 INFO L125 PetriNetUnfolderBase]: For 23287/23287 co-relation queries the response was YES. [2024-06-14 12:40:32,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 621 events. 349/621 cut-off events. For 23287/23287 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2605 event pairs, 61 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 3478. Up to 542 conditions per place. [2024-06-14 12:40:32,894 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 96 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2024-06-14 12:40:32,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 1188 flow [2024-06-14 12:40:32,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:32,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:40:32,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-14 12:40:32,896 INFO L175 Difference]: Start difference. First operand has 133 places, 110 transitions, 907 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:40:32,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 1188 flow [2024-06-14 12:40:32,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 124 transitions, 1106 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:32,933 INFO L231 Difference]: Finished difference. Result has 134 places, 111 transitions, 890 flow [2024-06-14 12:40:32,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=890, PETRI_PLACES=134, PETRI_TRANSITIONS=111} [2024-06-14 12:40:32,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-14 12:40:32,933 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 111 transitions, 890 flow [2024-06-14 12:40:32,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:32,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:32,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:32,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:40:32,934 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)] === [2024-06-14 12:40:32,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash -676468626, now seen corresponding path program 5 times [2024-06-14 12:40:32,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:32,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633494915] [2024-06-14 12:40:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:33,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:33,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633494915] [2024-06-14 12:40:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633494915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:33,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006464672] [2024-06-14 12:40:33,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:33,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:33,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:33,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:33,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:33,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:33,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 111 transitions, 890 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:33,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:33,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:33,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:33,885 INFO L124 PetriNetUnfolderBase]: 360/642 cut-off events. [2024-06-14 12:40:33,885 INFO L125 PetriNetUnfolderBase]: For 26069/26069 co-relation queries the response was YES. [2024-06-14 12:40:33,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3718 conditions, 642 events. 360/642 cut-off events. For 26069/26069 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2756 event pairs, 62 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 3650. Up to 534 conditions per place. [2024-06-14 12:40:33,889 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 95 selfloop transitions, 31 changer transitions 0/128 dead transitions. [2024-06-14 12:40:33,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 128 transitions, 1278 flow [2024-06-14 12:40:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:40:33,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:40:33,901 INFO L175 Difference]: Start difference. First operand has 134 places, 111 transitions, 890 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:40:33,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 128 transitions, 1278 flow [2024-06-14 12:40:33,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 128 transitions, 1224 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:33,941 INFO L231 Difference]: Finished difference. Result has 136 places, 113 transitions, 922 flow [2024-06-14 12:40:33,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=136, PETRI_TRANSITIONS=113} [2024-06-14 12:40:33,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-14 12:40:33,942 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 113 transitions, 922 flow [2024-06-14 12:40:33,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:33,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:33,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:33,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:40:33,943 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)] === [2024-06-14 12:40:33,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1900654170, now seen corresponding path program 6 times [2024-06-14 12:40:33,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:33,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435812471] [2024-06-14 12:40:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:34,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435812471] [2024-06-14 12:40:34,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435812471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:34,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:34,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:34,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013632548] [2024-06-14 12:40:34,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:34,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:34,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:34,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:34,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:34,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:34,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 113 transitions, 922 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:34,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:34,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:34,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:34,993 INFO L124 PetriNetUnfolderBase]: 357/637 cut-off events. [2024-06-14 12:40:34,993 INFO L125 PetriNetUnfolderBase]: For 25543/25543 co-relation queries the response was YES. [2024-06-14 12:40:34,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3662 conditions, 637 events. 357/637 cut-off events. For 25543/25543 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2729 event pairs, 63 based on Foata normal form. 2/637 useless extension candidates. Maximal degree in co-relation 3593. Up to 546 conditions per place. [2024-06-14 12:40:34,997 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 94 selfloop transitions, 31 changer transitions 0/127 dead transitions. [2024-06-14 12:40:34,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 127 transitions, 1204 flow [2024-06-14 12:40:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:34,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:40:34,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 12:40:35,000 INFO L175 Difference]: Start difference. First operand has 136 places, 113 transitions, 922 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:40:35,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 127 transitions, 1204 flow [2024-06-14 12:40:35,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 127 transitions, 1151 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:35,040 INFO L231 Difference]: Finished difference. Result has 140 places, 113 transitions, 937 flow [2024-06-14 12:40:35,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=937, PETRI_PLACES=140, PETRI_TRANSITIONS=113} [2024-06-14 12:40:35,042 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-14 12:40:35,042 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 113 transitions, 937 flow [2024-06-14 12:40:35,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:35,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:35,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:35,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:40:35,043 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)] === [2024-06-14 12:40:35,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:35,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1673368380, now seen corresponding path program 7 times [2024-06-14 12:40:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958224186] [2024-06-14 12:40:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:35,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:35,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958224186] [2024-06-14 12:40:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958224186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:35,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:35,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:35,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111264679] [2024-06-14 12:40:35,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:35,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:35,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:35,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:35,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 113 transitions, 937 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:35,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:35,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:35,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:36,058 INFO L124 PetriNetUnfolderBase]: 361/645 cut-off events. [2024-06-14 12:40:36,058 INFO L125 PetriNetUnfolderBase]: For 26686/26686 co-relation queries the response was YES. [2024-06-14 12:40:36,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 645 events. 361/645 cut-off events. For 26686/26686 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2771 event pairs, 42 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 3679. Up to 507 conditions per place. [2024-06-14 12:40:36,063 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 96 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-06-14 12:40:36,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 135 transitions, 1352 flow [2024-06-14 12:40:36,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:36,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:36,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 12:40:36,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:40:36,064 INFO L175 Difference]: Start difference. First operand has 140 places, 113 transitions, 937 flow. Second operand 9 states and 117 transitions. [2024-06-14 12:40:36,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 135 transitions, 1352 flow [2024-06-14 12:40:36,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 135 transitions, 1294 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:36,122 INFO L231 Difference]: Finished difference. Result has 141 places, 114 transitions, 968 flow [2024-06-14 12:40:36,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=141, PETRI_TRANSITIONS=114} [2024-06-14 12:40:36,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-14 12:40:36,123 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 114 transitions, 968 flow [2024-06-14 12:40:36,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:36,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:36,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:36,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:40:36,123 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)] === [2024-06-14 12:40:36,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1673372255, now seen corresponding path program 2 times [2024-06-14 12:40:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689051326] [2024-06-14 12:40:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:36,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:36,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:36,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689051326] [2024-06-14 12:40:36,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689051326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:36,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:36,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:36,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107825534] [2024-06-14 12:40:36,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:36,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:36,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:36,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:36,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 114 transitions, 968 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:36,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:36,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:36,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:37,304 INFO L124 PetriNetUnfolderBase]: 370/660 cut-off events. [2024-06-14 12:40:37,304 INFO L125 PetriNetUnfolderBase]: For 28920/28920 co-relation queries the response was YES. [2024-06-14 12:40:37,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3873 conditions, 660 events. 370/660 cut-off events. For 28920/28920 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2866 event pairs, 47 based on Foata normal form. 3/661 useless extension candidates. Maximal degree in co-relation 3802. Up to 391 conditions per place. [2024-06-14 12:40:37,308 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 88 selfloop transitions, 56 changer transitions 0/146 dead transitions. [2024-06-14 12:40:37,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 146 transitions, 1453 flow [2024-06-14 12:40:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:40:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:40:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:40:37,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-14 12:40:37,309 INFO L175 Difference]: Start difference. First operand has 141 places, 114 transitions, 968 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:40:37,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 146 transitions, 1453 flow [2024-06-14 12:40:37,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 146 transitions, 1319 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:40:37,358 INFO L231 Difference]: Finished difference. Result has 143 places, 117 transitions, 976 flow [2024-06-14 12:40:37,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=976, PETRI_PLACES=143, PETRI_TRANSITIONS=117} [2024-06-14 12:40:37,359 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-14 12:40:37,359 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 117 transitions, 976 flow [2024-06-14 12:40:37,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:37,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:37,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:37,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:40:37,359 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)] === [2024-06-14 12:40:37,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1673372100, now seen corresponding path program 8 times [2024-06-14 12:40:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378432076] [2024-06-14 12:40:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:38,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:38,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378432076] [2024-06-14 12:40:38,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378432076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:38,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:38,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:38,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140307092] [2024-06-14 12:40:38,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:38,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:38,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:38,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 117 transitions, 976 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:38,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:38,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:38,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:38,307 INFO L124 PetriNetUnfolderBase]: 377/673 cut-off events. [2024-06-14 12:40:38,307 INFO L125 PetriNetUnfolderBase]: For 29254/29254 co-relation queries the response was YES. [2024-06-14 12:40:38,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3910 conditions, 673 events. 377/673 cut-off events. For 29254/29254 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2932 event pairs, 65 based on Foata normal form. 2/673 useless extension candidates. Maximal degree in co-relation 3840. Up to 573 conditions per place. [2024-06-14 12:40:38,310 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 37 changer transitions 0/139 dead transitions. [2024-06-14 12:40:38,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 139 transitions, 1322 flow [2024-06-14 12:40:38,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:38,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:40:38,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 12:40:38,311 INFO L175 Difference]: Start difference. First operand has 143 places, 117 transitions, 976 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:40:38,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 139 transitions, 1322 flow [2024-06-14 12:40:38,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 139 transitions, 1198 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:40:38,361 INFO L231 Difference]: Finished difference. Result has 143 places, 120 transitions, 958 flow [2024-06-14 12:40:38,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=958, PETRI_PLACES=143, PETRI_TRANSITIONS=120} [2024-06-14 12:40:38,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-14 12:40:38,361 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 120 transitions, 958 flow [2024-06-14 12:40:38,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:38,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:38,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:38,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:40:38,362 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)] === [2024-06-14 12:40:38,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1673516250, now seen corresponding path program 9 times [2024-06-14 12:40:38,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:38,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564614797] [2024-06-14 12:40:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:39,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:39,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564614797] [2024-06-14 12:40:39,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564614797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:39,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:39,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:39,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708774371] [2024-06-14 12:40:39,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:39,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:39,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:39,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:39,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:39,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:39,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 120 transitions, 958 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:39,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:39,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:39,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:39,360 INFO L124 PetriNetUnfolderBase]: 381/681 cut-off events. [2024-06-14 12:40:39,361 INFO L125 PetriNetUnfolderBase]: For 30396/30396 co-relation queries the response was YES. [2024-06-14 12:40:39,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3863 conditions, 681 events. 381/681 cut-off events. For 30396/30396 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2983 event pairs, 65 based on Foata normal form. 2/681 useless extension candidates. Maximal degree in co-relation 3792. Up to 602 conditions per place. [2024-06-14 12:40:39,365 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 29 changer transitions 0/137 dead transitions. [2024-06-14 12:40:39,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 137 transitions, 1275 flow [2024-06-14 12:40:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:40:39,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:40:39,373 INFO L175 Difference]: Start difference. First operand has 143 places, 120 transitions, 958 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:40:39,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 137 transitions, 1275 flow [2024-06-14 12:40:39,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 137 transitions, 1215 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:39,427 INFO L231 Difference]: Finished difference. Result has 147 places, 121 transitions, 971 flow [2024-06-14 12:40:39,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=971, PETRI_PLACES=147, PETRI_TRANSITIONS=121} [2024-06-14 12:40:39,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-14 12:40:39,427 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 121 transitions, 971 flow [2024-06-14 12:40:39,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:39,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:39,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:39,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:40:39,428 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)] === [2024-06-14 12:40:39,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:39,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1679086175, now seen corresponding path program 3 times [2024-06-14 12:40:39,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:39,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982361762] [2024-06-14 12:40:39,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:39,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:40,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:40,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982361762] [2024-06-14 12:40:40,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982361762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:40,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:40,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:40,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887562428] [2024-06-14 12:40:40,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:40,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:40,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:40,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:40,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:40,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 121 transitions, 971 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:40,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:40,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:40,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:40,395 INFO L124 PetriNetUnfolderBase]: 390/696 cut-off events. [2024-06-14 12:40:40,395 INFO L125 PetriNetUnfolderBase]: For 32836/32836 co-relation queries the response was YES. [2024-06-14 12:40:40,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 696 events. 390/696 cut-off events. For 32836/32836 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3084 event pairs, 56 based on Foata normal form. 3/697 useless extension candidates. Maximal degree in co-relation 3881. Up to 495 conditions per place. [2024-06-14 12:40:40,399 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 42 changer transitions 0/143 dead transitions. [2024-06-14 12:40:40,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 143 transitions, 1336 flow [2024-06-14 12:40:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 12:40:40,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:40:40,400 INFO L175 Difference]: Start difference. First operand has 147 places, 121 transitions, 971 flow. Second operand 9 states and 117 transitions. [2024-06-14 12:40:40,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 143 transitions, 1336 flow [2024-06-14 12:40:40,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 143 transitions, 1258 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:40,454 INFO L231 Difference]: Finished difference. Result has 148 places, 124 transitions, 1012 flow [2024-06-14 12:40:40,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1012, PETRI_PLACES=148, PETRI_TRANSITIONS=124} [2024-06-14 12:40:40,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-14 12:40:40,455 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 124 transitions, 1012 flow [2024-06-14 12:40:40,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:40,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:40,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:40,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:40:40,455 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)] === [2024-06-14 12:40:40,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:40,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1678878785, now seen corresponding path program 4 times [2024-06-14 12:40:40,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:40,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544348583] [2024-06-14 12:40:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:40,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:41,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544348583] [2024-06-14 12:40:41,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544348583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:41,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:41,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623529194] [2024-06-14 12:40:41,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:41,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:41,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:41,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 124 transitions, 1012 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:41,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:41,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:41,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:41,403 INFO L124 PetriNetUnfolderBase]: 398/709 cut-off events. [2024-06-14 12:40:41,403 INFO L125 PetriNetUnfolderBase]: For 33124/33124 co-relation queries the response was YES. [2024-06-14 12:40:41,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 709 events. 398/709 cut-off events. For 33124/33124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3150 event pairs, 56 based on Foata normal form. 1/708 useless extension candidates. Maximal degree in co-relation 4086. Up to 588 conditions per place. [2024-06-14 12:40:41,407 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 38 changer transitions 0/156 dead transitions. [2024-06-14 12:40:41,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 156 transitions, 1615 flow [2024-06-14 12:40:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:41,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:41,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 12:40:41,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:40:41,408 INFO L175 Difference]: Start difference. First operand has 148 places, 124 transitions, 1012 flow. Second operand 9 states and 112 transitions. [2024-06-14 12:40:41,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 156 transitions, 1615 flow [2024-06-14 12:40:41,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 1505 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:41,461 INFO L231 Difference]: Finished difference. Result has 154 places, 141 transitions, 1205 flow [2024-06-14 12:40:41,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1205, PETRI_PLACES=154, PETRI_TRANSITIONS=141} [2024-06-14 12:40:41,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-14 12:40:41,461 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 141 transitions, 1205 flow [2024-06-14 12:40:41,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:41,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:41,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:41,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:40:41,462 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)] === [2024-06-14 12:40:41,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1678878630, now seen corresponding path program 10 times [2024-06-14 12:40:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:41,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827702330] [2024-06-14 12:40:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:41,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:42,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:42,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827702330] [2024-06-14 12:40:42,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827702330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:42,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:42,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:42,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933915447] [2024-06-14 12:40:42,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:42,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:42,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:42,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:42,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 141 transitions, 1205 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:42,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:42,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:42,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:42,454 INFO L124 PetriNetUnfolderBase]: 402/717 cut-off events. [2024-06-14 12:40:42,454 INFO L125 PetriNetUnfolderBase]: For 35898/35898 co-relation queries the response was YES. [2024-06-14 12:40:42,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4323 conditions, 717 events. 402/717 cut-off events. For 35898/35898 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3178 event pairs, 63 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 4245. Up to 638 conditions per place. [2024-06-14 12:40:42,459 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 127 selfloop transitions, 26 changer transitions 0/155 dead transitions. [2024-06-14 12:40:42,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 155 transitions, 1552 flow [2024-06-14 12:40:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:42,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:40:42,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-14 12:40:42,460 INFO L175 Difference]: Start difference. First operand has 154 places, 141 transitions, 1205 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:40:42,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 155 transitions, 1552 flow [2024-06-14 12:40:42,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 155 transitions, 1510 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:42,522 INFO L231 Difference]: Finished difference. Result has 160 places, 142 transitions, 1232 flow [2024-06-14 12:40:42,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1232, PETRI_PLACES=160, PETRI_TRANSITIONS=142} [2024-06-14 12:40:42,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-14 12:40:42,522 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 142 transitions, 1232 flow [2024-06-14 12:40:42,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:42,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:42,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:42,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:40:42,523 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)] === [2024-06-14 12:40:42,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:42,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1678884365, now seen corresponding path program 5 times [2024-06-14 12:40:42,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:42,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576610305] [2024-06-14 12:40:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:42,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:43,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:43,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576610305] [2024-06-14 12:40:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576610305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:43,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:43,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604951461] [2024-06-14 12:40:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:43,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:43,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:43,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 142 transitions, 1232 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:43,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:43,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:43,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:43,473 INFO L124 PetriNetUnfolderBase]: 400/714 cut-off events. [2024-06-14 12:40:43,474 INFO L125 PetriNetUnfolderBase]: For 34684/34684 co-relation queries the response was YES. [2024-06-14 12:40:43,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4260 conditions, 714 events. 400/714 cut-off events. For 34684/34684 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3187 event pairs, 56 based on Foata normal form. 1/713 useless extension candidates. Maximal degree in co-relation 4181. Up to 603 conditions per place. [2024-06-14 12:40:43,478 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 34 changer transitions 0/157 dead transitions. [2024-06-14 12:40:43,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 157 transitions, 1589 flow [2024-06-14 12:40:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:40:43,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:40:43,479 INFO L175 Difference]: Start difference. First operand has 160 places, 142 transitions, 1232 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:40:43,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 157 transitions, 1589 flow [2024-06-14 12:40:43,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 157 transitions, 1529 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:43,550 INFO L231 Difference]: Finished difference. Result has 162 places, 143 transitions, 1250 flow [2024-06-14 12:40:43,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1250, PETRI_PLACES=162, PETRI_TRANSITIONS=143} [2024-06-14 12:40:43,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-14 12:40:43,551 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 143 transitions, 1250 flow [2024-06-14 12:40:43,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:43,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:43,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:40:43,551 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)] === [2024-06-14 12:40:43,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash -680609174, now seen corresponding path program 11 times [2024-06-14 12:40:43,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655027584] [2024-06-14 12:40:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:44,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:44,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655027584] [2024-06-14 12:40:44,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655027584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:44,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:44,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:44,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924076384] [2024-06-14 12:40:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:44,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:44,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:44,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:44,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 143 transitions, 1250 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:44,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:44,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:44,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:44,466 INFO L124 PetriNetUnfolderBase]: 397/709 cut-off events. [2024-06-14 12:40:44,467 INFO L125 PetriNetUnfolderBase]: For 34648/34648 co-relation queries the response was YES. [2024-06-14 12:40:44,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4176 conditions, 709 events. 397/709 cut-off events. For 34648/34648 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3146 event pairs, 63 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 4096. Up to 679 conditions per place. [2024-06-14 12:40:44,470 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 137 selfloop transitions, 14 changer transitions 0/153 dead transitions. [2024-06-14 12:40:44,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 153 transitions, 1574 flow [2024-06-14 12:40:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:40:44,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 12:40:44,471 INFO L175 Difference]: Start difference. First operand has 162 places, 143 transitions, 1250 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:40:44,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 153 transitions, 1574 flow [2024-06-14 12:40:44,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 153 transitions, 1501 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:44,528 INFO L231 Difference]: Finished difference. Result has 165 places, 143 transitions, 1209 flow [2024-06-14 12:40:44,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1209, PETRI_PLACES=165, PETRI_TRANSITIONS=143} [2024-06-14 12:40:44,529 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-14 12:40:44,529 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 143 transitions, 1209 flow [2024-06-14 12:40:44,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:44,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:44,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:44,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:40:44,529 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)] === [2024-06-14 12:40:44,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:44,530 INFO L85 PathProgramCache]: Analyzing trace with hash -575037632, now seen corresponding path program 1 times [2024-06-14 12:40:44,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:44,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826985869] [2024-06-14 12:40:44,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:44,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:45,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:45,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826985869] [2024-06-14 12:40:45,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826985869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:45,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:45,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:45,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493841973] [2024-06-14 12:40:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:45,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:45,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:45,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 143 transitions, 1209 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:45,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:45,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:45,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:45,459 INFO L124 PetriNetUnfolderBase]: 393/703 cut-off events. [2024-06-14 12:40:45,459 INFO L125 PetriNetUnfolderBase]: For 33017/33017 co-relation queries the response was YES. [2024-06-14 12:40:45,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 703 events. 393/703 cut-off events. For 33017/33017 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3120 event pairs, 56 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 3930. Up to 663 conditions per place. [2024-06-14 12:40:45,463 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 140 selfloop transitions, 15 changer transitions 0/157 dead transitions. [2024-06-14 12:40:45,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 157 transitions, 1559 flow [2024-06-14 12:40:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 12:40:45,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 12:40:45,464 INFO L175 Difference]: Start difference. First operand has 165 places, 143 transitions, 1209 flow. Second operand 9 states and 101 transitions. [2024-06-14 12:40:45,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 157 transitions, 1559 flow [2024-06-14 12:40:45,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 157 transitions, 1478 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:40:45,520 INFO L231 Difference]: Finished difference. Result has 165 places, 145 transitions, 1181 flow [2024-06-14 12:40:45,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1181, PETRI_PLACES=165, PETRI_TRANSITIONS=145} [2024-06-14 12:40:45,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-14 12:40:45,521 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 145 transitions, 1181 flow [2024-06-14 12:40:45,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:45,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:45,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:45,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:40:45,522 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)] === [2024-06-14 12:40:45,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:45,522 INFO L85 PathProgramCache]: Analyzing trace with hash -680609019, now seen corresponding path program 6 times [2024-06-14 12:40:45,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:45,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766581033] [2024-06-14 12:40:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:45,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:46,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766581033] [2024-06-14 12:40:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766581033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:46,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:46,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:46,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375863951] [2024-06-14 12:40:46,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:46,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:46,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:46,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:46,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:46,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 145 transitions, 1181 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:46,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:46,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:46,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:46,418 INFO L124 PetriNetUnfolderBase]: 396/708 cut-off events. [2024-06-14 12:40:46,418 INFO L125 PetriNetUnfolderBase]: For 31412/31412 co-relation queries the response was YES. [2024-06-14 12:40:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4012 conditions, 708 events. 396/708 cut-off events. For 31412/31412 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3149 event pairs, 56 based on Foata normal form. 1/707 useless extension candidates. Maximal degree in co-relation 3930. Up to 655 conditions per place. [2024-06-14 12:40:46,422 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 23 changer transitions 0/161 dead transitions. [2024-06-14 12:40:46,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 161 transitions, 1681 flow [2024-06-14 12:40:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:46,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 12:40:46,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 12:40:46,424 INFO L175 Difference]: Start difference. First operand has 165 places, 145 transitions, 1181 flow. Second operand 9 states and 103 transitions. [2024-06-14 12:40:46,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 161 transitions, 1681 flow [2024-06-14 12:40:46,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 161 transitions, 1644 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:46,474 INFO L231 Difference]: Finished difference. Result has 168 places, 151 transitions, 1261 flow [2024-06-14 12:40:46,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1261, PETRI_PLACES=168, PETRI_TRANSITIONS=151} [2024-06-14 12:40:46,475 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-14 12:40:46,475 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 151 transitions, 1261 flow [2024-06-14 12:40:46,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:46,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:46,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:46,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:40:46,475 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)] === [2024-06-14 12:40:46,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:46,476 INFO L85 PathProgramCache]: Analyzing trace with hash -423901119, now seen corresponding path program 7 times [2024-06-14 12:40:46,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:46,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083172564] [2024-06-14 12:40:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:46,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:47,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083172564] [2024-06-14 12:40:47,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083172564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:47,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:47,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:47,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005240698] [2024-06-14 12:40:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:47,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:47,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:47,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:47,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:47,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:47,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 151 transitions, 1261 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:47,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:47,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:47,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:47,451 INFO L124 PetriNetUnfolderBase]: 405/723 cut-off events. [2024-06-14 12:40:47,451 INFO L125 PetriNetUnfolderBase]: For 35585/35585 co-relation queries the response was YES. [2024-06-14 12:40:47,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 723 events. 405/723 cut-off events. For 35585/35585 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3234 event pairs, 52 based on Foata normal form. 3/724 useless extension candidates. Maximal degree in co-relation 4081. Up to 672 conditions per place. [2024-06-14 12:40:47,455 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 19 changer transitions 0/169 dead transitions. [2024-06-14 12:40:47,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 169 transitions, 1688 flow [2024-06-14 12:40:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 12:40:47,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 12:40:47,456 INFO L175 Difference]: Start difference. First operand has 168 places, 151 transitions, 1261 flow. Second operand 9 states and 104 transitions. [2024-06-14 12:40:47,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 169 transitions, 1688 flow [2024-06-14 12:40:47,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 169 transitions, 1641 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:47,530 INFO L231 Difference]: Finished difference. Result has 173 places, 155 transitions, 1322 flow [2024-06-14 12:40:47,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1322, PETRI_PLACES=173, PETRI_TRANSITIONS=155} [2024-06-14 12:40:47,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 142 predicate places. [2024-06-14 12:40:47,531 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 155 transitions, 1322 flow [2024-06-14 12:40:47,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:47,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:47,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:47,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:40:47,531 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)] === [2024-06-14 12:40:47,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:47,531 INFO L85 PathProgramCache]: Analyzing trace with hash -680401629, now seen corresponding path program 8 times [2024-06-14 12:40:47,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:47,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894374447] [2024-06-14 12:40:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:48,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894374447] [2024-06-14 12:40:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894374447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:48,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:48,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:48,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290992168] [2024-06-14 12:40:48,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:48,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:48,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:48,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:48,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:48,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:48,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 155 transitions, 1322 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:48,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:48,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:48,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:48,520 INFO L124 PetriNetUnfolderBase]: 414/738 cut-off events. [2024-06-14 12:40:48,520 INFO L125 PetriNetUnfolderBase]: For 37022/37022 co-relation queries the response was YES. [2024-06-14 12:40:48,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 738 events. 414/738 cut-off events. For 37022/37022 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3341 event pairs, 52 based on Foata normal form. 3/739 useless extension candidates. Maximal degree in co-relation 4233. Up to 650 conditions per place. [2024-06-14 12:40:48,524 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 145 selfloop transitions, 28 changer transitions 0/175 dead transitions. [2024-06-14 12:40:48,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 1771 flow [2024-06-14 12:40:48,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 12:40:48,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 12:40:48,525 INFO L175 Difference]: Start difference. First operand has 173 places, 155 transitions, 1322 flow. Second operand 9 states and 110 transitions. [2024-06-14 12:40:48,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 1771 flow [2024-06-14 12:40:48,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 175 transitions, 1717 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:48,584 INFO L231 Difference]: Finished difference. Result has 175 places, 159 transitions, 1396 flow [2024-06-14 12:40:48,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1396, PETRI_PLACES=175, PETRI_TRANSITIONS=159} [2024-06-14 12:40:48,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-14 12:40:48,584 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 159 transitions, 1396 flow [2024-06-14 12:40:48,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:48,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:48,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:48,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:40:48,585 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)] === [2024-06-14 12:40:48,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash -680603439, now seen corresponding path program 9 times [2024-06-14 12:40:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:48,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38239810] [2024-06-14 12:40:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:48,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:49,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:49,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38239810] [2024-06-14 12:40:49,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38239810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:49,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:49,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:49,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153121208] [2024-06-14 12:40:49,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:49,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:49,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:49,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:49,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:49,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:49,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 159 transitions, 1396 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:49,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:49,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:49,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:49,504 INFO L124 PetriNetUnfolderBase]: 412/735 cut-off events. [2024-06-14 12:40:49,504 INFO L125 PetriNetUnfolderBase]: For 33691/33691 co-relation queries the response was YES. [2024-06-14 12:40:49,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 735 events. 412/735 cut-off events. For 33691/33691 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3305 event pairs, 58 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 4201. Up to 693 conditions per place. [2024-06-14 12:40:49,508 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 21 changer transitions 0/169 dead transitions. [2024-06-14 12:40:49,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 169 transitions, 1756 flow [2024-06-14 12:40:49,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:49,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 12:40:49,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-14 12:40:49,509 INFO L175 Difference]: Start difference. First operand has 175 places, 159 transitions, 1396 flow. Second operand 9 states and 101 transitions. [2024-06-14 12:40:49,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 169 transitions, 1756 flow [2024-06-14 12:40:49,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 169 transitions, 1670 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:49,569 INFO L231 Difference]: Finished difference. Result has 177 places, 160 transitions, 1363 flow [2024-06-14 12:40:49,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1363, PETRI_PLACES=177, PETRI_TRANSITIONS=160} [2024-06-14 12:40:49,570 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-14 12:40:49,570 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 160 transitions, 1363 flow [2024-06-14 12:40:49,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:49,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:49,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:49,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:40:49,570 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)] === [2024-06-14 12:40:49,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:49,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1536390017, now seen corresponding path program 1 times [2024-06-14 12:40:49,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:49,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945639558] [2024-06-14 12:40:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:49,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:50,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:50,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945639558] [2024-06-14 12:40:50,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945639558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:50,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:50,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:50,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742827931] [2024-06-14 12:40:50,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:50,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:50,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:50,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:50,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:50,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 160 transitions, 1363 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:50,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:50,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:50,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:50,678 INFO L124 PetriNetUnfolderBase]: 459/828 cut-off events. [2024-06-14 12:40:50,679 INFO L125 PetriNetUnfolderBase]: For 59074/59074 co-relation queries the response was YES. [2024-06-14 12:40:50,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5357 conditions, 828 events. 459/828 cut-off events. For 59074/59074 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3820 event pairs, 44 based on Foata normal form. 2/828 useless extension candidates. Maximal degree in co-relation 5269. Up to 313 conditions per place. [2024-06-14 12:40:50,684 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 80 changer transitions 0/191 dead transitions. [2024-06-14 12:40:50,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 191 transitions, 2079 flow [2024-06-14 12:40:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:50,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:40:50,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-14 12:40:50,685 INFO L175 Difference]: Start difference. First operand has 177 places, 160 transitions, 1363 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:40:50,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 191 transitions, 2079 flow [2024-06-14 12:40:50,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 191 transitions, 2032 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:50,782 INFO L231 Difference]: Finished difference. Result has 181 places, 161 transitions, 1488 flow [2024-06-14 12:40:50,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1488, PETRI_PLACES=181, PETRI_TRANSITIONS=161} [2024-06-14 12:40:50,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-14 12:40:50,783 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 161 transitions, 1488 flow [2024-06-14 12:40:50,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:50,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:50,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:50,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:40:50,783 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)] === [2024-06-14 12:40:50,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1478297567, now seen corresponding path program 2 times [2024-06-14 12:40:50,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:50,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351274074] [2024-06-14 12:40:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:50,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351274074] [2024-06-14 12:40:51,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351274074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:51,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:51,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942629762] [2024-06-14 12:40:51,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:51,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:51,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:51,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:51,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 161 transitions, 1488 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:51,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:51,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:51,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:51,794 INFO L124 PetriNetUnfolderBase]: 473/854 cut-off events. [2024-06-14 12:40:51,794 INFO L125 PetriNetUnfolderBase]: For 64989/64989 co-relation queries the response was YES. [2024-06-14 12:40:51,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5781 conditions, 854 events. 473/854 cut-off events. For 64989/64989 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4059 event pairs, 78 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 5692. Up to 628 conditions per place. [2024-06-14 12:40:51,800 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 61 changer transitions 0/187 dead transitions. [2024-06-14 12:40:51,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 187 transitions, 2069 flow [2024-06-14 12:40:51,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:40:51,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:40:51,801 INFO L175 Difference]: Start difference. First operand has 181 places, 161 transitions, 1488 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:40:51,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 187 transitions, 2069 flow [2024-06-14 12:40:51,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 187 transitions, 1879 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:51,913 INFO L231 Difference]: Finished difference. Result has 184 places, 167 transitions, 1519 flow [2024-06-14 12:40:51,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=184, PETRI_TRANSITIONS=167} [2024-06-14 12:40:51,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-14 12:40:51,914 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 167 transitions, 1519 flow [2024-06-14 12:40:51,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:51,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:51,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:51,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:40:51,914 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)] === [2024-06-14 12:40:51,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:51,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1478177597, now seen corresponding path program 3 times [2024-06-14 12:40:51,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:51,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962209245] [2024-06-14 12:40:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:51,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:52,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962209245] [2024-06-14 12:40:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962209245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:52,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217434253] [2024-06-14 12:40:52,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:52,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:52,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:52,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:52,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 167 transitions, 1519 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:52,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:52,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:52,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:52,907 INFO L124 PetriNetUnfolderBase]: 477/862 cut-off events. [2024-06-14 12:40:52,907 INFO L125 PetriNetUnfolderBase]: For 67074/67074 co-relation queries the response was YES. [2024-06-14 12:40:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5824 conditions, 862 events. 477/862 cut-off events. For 67074/67074 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4093 event pairs, 86 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 5734. Up to 671 conditions per place. [2024-06-14 12:40:52,914 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 60 changer transitions 0/185 dead transitions. [2024-06-14 12:40:52,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 185 transitions, 1932 flow [2024-06-14 12:40:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:52,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:40:52,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 12:40:52,915 INFO L175 Difference]: Start difference. First operand has 184 places, 167 transitions, 1519 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:40:52,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 185 transitions, 1932 flow [2024-06-14 12:40:53,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 185 transitions, 1897 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:53,064 INFO L231 Difference]: Finished difference. Result has 190 places, 168 transitions, 1617 flow [2024-06-14 12:40:53,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1617, PETRI_PLACES=190, PETRI_TRANSITIONS=168} [2024-06-14 12:40:53,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-14 12:40:53,065 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 168 transitions, 1617 flow [2024-06-14 12:40:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:53,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:53,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:53,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:40:53,065 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)] === [2024-06-14 12:40:53,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:53,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1309280047, now seen corresponding path program 4 times [2024-06-14 12:40:53,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:53,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140678652] [2024-06-14 12:40:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:53,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:53,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:53,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140678652] [2024-06-14 12:40:53,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140678652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:53,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:53,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104574242] [2024-06-14 12:40:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:53,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:53,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:53,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:53,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:53,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 168 transitions, 1617 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:53,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:53,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:53,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:54,250 INFO L124 PetriNetUnfolderBase]: 528/963 cut-off events. [2024-06-14 12:40:54,250 INFO L125 PetriNetUnfolderBase]: For 97917/97917 co-relation queries the response was YES. [2024-06-14 12:40:54,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7158 conditions, 963 events. 528/963 cut-off events. For 97917/97917 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4706 event pairs, 86 based on Foata normal form. 4/965 useless extension candidates. Maximal degree in co-relation 7066. Up to 499 conditions per place. [2024-06-14 12:40:54,257 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 104 selfloop transitions, 97 changer transitions 0/203 dead transitions. [2024-06-14 12:40:54,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 203 transitions, 2387 flow [2024-06-14 12:40:54,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:40:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:40:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-14 12:40:54,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-14 12:40:54,260 INFO L175 Difference]: Start difference. First operand has 190 places, 168 transitions, 1617 flow. Second operand 12 states and 161 transitions. [2024-06-14 12:40:54,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 203 transitions, 2387 flow [2024-06-14 12:40:54,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 203 transitions, 2261 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:54,399 INFO L231 Difference]: Finished difference. Result has 195 places, 171 transitions, 1746 flow [2024-06-14 12:40:54,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1746, PETRI_PLACES=195, PETRI_TRANSITIONS=171} [2024-06-14 12:40:54,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-14 12:40:54,400 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 171 transitions, 1746 flow [2024-06-14 12:40:54,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:54,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:54,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:54,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:40:54,400 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)] === [2024-06-14 12:40:54,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:54,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1478177411, now seen corresponding path program 1 times [2024-06-14 12:40:54,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:54,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717424283] [2024-06-14 12:40:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:54,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:55,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717424283] [2024-06-14 12:40:55,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717424283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:55,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:55,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:55,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396530221] [2024-06-14 12:40:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:55,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:55,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:55,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 171 transitions, 1746 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:55,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:55,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:55,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:55,913 INFO L124 PetriNetUnfolderBase]: 544/989 cut-off events. [2024-06-14 12:40:55,913 INFO L125 PetriNetUnfolderBase]: For 101624/101624 co-relation queries the response was YES. [2024-06-14 12:40:55,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7594 conditions, 989 events. 544/989 cut-off events. For 101624/101624 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4845 event pairs, 96 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 7500. Up to 636 conditions per place. [2024-06-14 12:40:55,920 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 90 changer transitions 0/202 dead transitions. [2024-06-14 12:40:55,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 202 transitions, 2368 flow [2024-06-14 12:40:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 12:40:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 12:40:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 171 transitions. [2024-06-14 12:40:55,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38169642857142855 [2024-06-14 12:40:55,922 INFO L175 Difference]: Start difference. First operand has 195 places, 171 transitions, 1746 flow. Second operand 14 states and 171 transitions. [2024-06-14 12:40:55,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 202 transitions, 2368 flow [2024-06-14 12:40:56,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 202 transitions, 2236 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:56,073 INFO L231 Difference]: Finished difference. Result has 202 places, 176 transitions, 1852 flow [2024-06-14 12:40:56,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1852, PETRI_PLACES=202, PETRI_TRANSITIONS=176} [2024-06-14 12:40:56,074 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-14 12:40:56,074 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 176 transitions, 1852 flow [2024-06-14 12:40:56,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:56,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:56,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:56,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:40:56,074 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)] === [2024-06-14 12:40:56,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1213910143, now seen corresponding path program 5 times [2024-06-14 12:40:56,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:56,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287817222] [2024-06-14 12:40:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:56,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:56,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:56,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287817222] [2024-06-14 12:40:56,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287817222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:56,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:56,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506675380] [2024-06-14 12:40:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:56,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:56,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:56,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:56,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 176 transitions, 1852 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:56,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:56,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:56,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:57,282 INFO L124 PetriNetUnfolderBase]: 532/969 cut-off events. [2024-06-14 12:40:57,282 INFO L125 PetriNetUnfolderBase]: For 104989/104989 co-relation queries the response was YES. [2024-06-14 12:40:57,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6927 conditions, 969 events. 532/969 cut-off events. For 104989/104989 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4782 event pairs, 84 based on Foata normal form. 16/983 useless extension candidates. Maximal degree in co-relation 6830. Up to 704 conditions per place. [2024-06-14 12:40:57,290 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 143 selfloop transitions, 48 changer transitions 8/201 dead transitions. [2024-06-14 12:40:57,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 201 transitions, 2355 flow [2024-06-14 12:40:57,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:57,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:40:57,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:40:57,290 INFO L175 Difference]: Start difference. First operand has 202 places, 176 transitions, 1852 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:40:57,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 201 transitions, 2355 flow [2024-06-14 12:40:57,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 201 transitions, 2241 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:40:57,457 INFO L231 Difference]: Finished difference. Result has 204 places, 176 transitions, 1861 flow [2024-06-14 12:40:57,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1861, PETRI_PLACES=204, PETRI_TRANSITIONS=176} [2024-06-14 12:40:57,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-14 12:40:57,457 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 176 transitions, 1861 flow [2024-06-14 12:40:57,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:57,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:57,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:57,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:40:57,457 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)] === [2024-06-14 12:40:57,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:57,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1213737163, now seen corresponding path program 6 times [2024-06-14 12:40:57,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:57,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349357787] [2024-06-14 12:40:57,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:57,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:58,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349357787] [2024-06-14 12:40:58,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349357787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:58,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:58,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:58,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079163752] [2024-06-14 12:40:58,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:58,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:58,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:58,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:58,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:58,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:58,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 176 transitions, 1861 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:58,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:58,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:58,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:58,555 INFO L124 PetriNetUnfolderBase]: 521/952 cut-off events. [2024-06-14 12:40:58,555 INFO L125 PetriNetUnfolderBase]: For 80644/80644 co-relation queries the response was YES. [2024-06-14 12:40:58,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6939 conditions, 952 events. 521/952 cut-off events. For 80644/80644 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4687 event pairs, 98 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 6839. Up to 829 conditions per place. [2024-06-14 12:40:58,562 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-14 12:40:58,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 193 transitions, 2314 flow [2024-06-14 12:40:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 12:40:58,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:40:58,564 INFO L175 Difference]: Start difference. First operand has 204 places, 176 transitions, 1861 flow. Second operand 10 states and 120 transitions. [2024-06-14 12:40:58,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 193 transitions, 2314 flow [2024-06-14 12:40:58,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 193 transitions, 2207 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:58,711 INFO L231 Difference]: Finished difference. Result has 208 places, 179 transitions, 1886 flow [2024-06-14 12:40:58,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1886, PETRI_PLACES=208, PETRI_TRANSITIONS=179} [2024-06-14 12:40:58,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-14 12:40:58,712 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 179 transitions, 1886 flow [2024-06-14 12:40:58,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:58,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:58,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:58,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:40:58,713 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)] === [2024-06-14 12:40:58,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1209148543, now seen corresponding path program 7 times [2024-06-14 12:40:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:58,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460444836] [2024-06-14 12:40:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:59,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:59,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460444836] [2024-06-14 12:40:59,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460444836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:59,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:59,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862164682] [2024-06-14 12:40:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:59,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:59,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:40:59,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 179 transitions, 1886 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:59,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:59,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:40:59,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:59,858 INFO L124 PetriNetUnfolderBase]: 525/960 cut-off events. [2024-06-14 12:40:59,859 INFO L125 PetriNetUnfolderBase]: For 82613/82613 co-relation queries the response was YES. [2024-06-14 12:40:59,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6969 conditions, 960 events. 525/960 cut-off events. For 82613/82613 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4769 event pairs, 87 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 6867. Up to 649 conditions per place. [2024-06-14 12:40:59,866 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 59 changer transitions 2/202 dead transitions. [2024-06-14 12:40:59,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 202 transitions, 2479 flow [2024-06-14 12:40:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:59,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:59,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:40:59,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 12:40:59,867 INFO L175 Difference]: Start difference. First operand has 208 places, 179 transitions, 1886 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:40:59,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 202 transitions, 2479 flow [2024-06-14 12:41:00,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 202 transitions, 2413 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:00,006 INFO L231 Difference]: Finished difference. Result has 211 places, 180 transitions, 1953 flow [2024-06-14 12:41:00,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1953, PETRI_PLACES=211, PETRI_TRANSITIONS=180} [2024-06-14 12:41:00,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-14 12:41:00,006 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 180 transitions, 1953 flow [2024-06-14 12:41:00,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:00,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:00,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:00,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:41:00,007 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)] === [2024-06-14 12:41:00,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:00,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1209268513, now seen corresponding path program 8 times [2024-06-14 12:41:00,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:00,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206202335] [2024-06-14 12:41:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:00,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:00,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:00,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206202335] [2024-06-14 12:41:00,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206202335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:00,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:00,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:00,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297922106] [2024-06-14 12:41:00,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:00,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:00,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:00,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:00,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:00,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:00,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 180 transitions, 1953 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:00,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:00,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:00,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:01,311 INFO L124 PetriNetUnfolderBase]: 522/955 cut-off events. [2024-06-14 12:41:01,311 INFO L125 PetriNetUnfolderBase]: For 81841/81841 co-relation queries the response was YES. [2024-06-14 12:41:01,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6916 conditions, 955 events. 522/955 cut-off events. For 81841/81841 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4743 event pairs, 87 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 6814. Up to 693 conditions per place. [2024-06-14 12:41:01,320 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 60 changer transitions 2/201 dead transitions. [2024-06-14 12:41:01,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 201 transitions, 2405 flow [2024-06-14 12:41:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:41:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:41:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:41:01,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 12:41:01,321 INFO L175 Difference]: Start difference. First operand has 211 places, 180 transitions, 1953 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:41:01,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 201 transitions, 2405 flow [2024-06-14 12:41:01,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 201 transitions, 2302 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:01,497 INFO L231 Difference]: Finished difference. Result has 217 places, 180 transitions, 1980 flow [2024-06-14 12:41:01,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1980, PETRI_PLACES=217, PETRI_TRANSITIONS=180} [2024-06-14 12:41:01,497 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-14 12:41:01,497 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 180 transitions, 1980 flow [2024-06-14 12:41:01,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:01,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:01,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:01,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:41:01,498 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)] === [2024-06-14 12:41:01,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:01,498 INFO L85 PathProgramCache]: Analyzing trace with hash 334813217, now seen corresponding path program 9 times [2024-06-14 12:41:01,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:01,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689705586] [2024-06-14 12:41:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:01,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:02,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:02,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689705586] [2024-06-14 12:41:02,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689705586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:02,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:02,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:02,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039983301] [2024-06-14 12:41:02,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:02,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:02,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:02,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:02,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:02,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:02,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 180 transitions, 1980 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:02,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:02,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:02,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:02,715 INFO L124 PetriNetUnfolderBase]: 548/1009 cut-off events. [2024-06-14 12:41:02,715 INFO L125 PetriNetUnfolderBase]: For 101232/101232 co-relation queries the response was YES. [2024-06-14 12:41:02,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7645 conditions, 1009 events. 548/1009 cut-off events. For 101232/101232 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5061 event pairs, 74 based on Foata normal form. 2/1009 useless extension candidates. Maximal degree in co-relation 7542. Up to 500 conditions per place. [2024-06-14 12:41:02,723 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 88 changer transitions 0/214 dead transitions. [2024-06-14 12:41:02,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 214 transitions, 2776 flow [2024-06-14 12:41:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-14 12:41:02,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-14 12:41:02,724 INFO L175 Difference]: Start difference. First operand has 217 places, 180 transitions, 1980 flow. Second operand 10 states and 143 transitions. [2024-06-14 12:41:02,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 214 transitions, 2776 flow [2024-06-14 12:41:02,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 214 transitions, 2621 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:41:02,887 INFO L231 Difference]: Finished difference. Result has 215 places, 181 transitions, 2024 flow [2024-06-14 12:41:02,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1833, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2024, PETRI_PLACES=215, PETRI_TRANSITIONS=181} [2024-06-14 12:41:02,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 12:41:02,888 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 181 transitions, 2024 flow [2024-06-14 12:41:02,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:02,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:02,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:02,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:41:02,888 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)] === [2024-06-14 12:41:02,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:02,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1529748331, now seen corresponding path program 10 times [2024-06-14 12:41:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:02,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436251991] [2024-06-14 12:41:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:02,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:03,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:03,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436251991] [2024-06-14 12:41:03,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436251991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:03,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:03,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126413933] [2024-06-14 12:41:03,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:03,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:03,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:03,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 181 transitions, 2024 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:03,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:03,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:03,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:04,018 INFO L124 PetriNetUnfolderBase]: 562/1035 cut-off events. [2024-06-14 12:41:04,018 INFO L125 PetriNetUnfolderBase]: For 102801/102801 co-relation queries the response was YES. [2024-06-14 12:41:04,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7933 conditions, 1035 events. 562/1035 cut-off events. For 102801/102801 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5270 event pairs, 118 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 7829. Up to 851 conditions per place. [2024-06-14 12:41:04,026 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 139 selfloop transitions, 67 changer transitions 0/208 dead transitions. [2024-06-14 12:41:04,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 208 transitions, 2676 flow [2024-06-14 12:41:04,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:41:04,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 12:41:04,027 INFO L175 Difference]: Start difference. First operand has 215 places, 181 transitions, 2024 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:41:04,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 208 transitions, 2676 flow [2024-06-14 12:41:04,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 208 transitions, 2350 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:04,208 INFO L231 Difference]: Finished difference. Result has 215 places, 186 transitions, 1896 flow [2024-06-14 12:41:04,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1896, PETRI_PLACES=215, PETRI_TRANSITIONS=186} [2024-06-14 12:41:04,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 12:41:04,209 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 186 transitions, 1896 flow [2024-06-14 12:41:04,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:04,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:04,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:04,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:41:04,209 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)] === [2024-06-14 12:41:04,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:04,209 INFO L85 PathProgramCache]: Analyzing trace with hash 334933373, now seen corresponding path program 2 times [2024-06-14 12:41:04,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:04,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798034040] [2024-06-14 12:41:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:04,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:05,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:05,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798034040] [2024-06-14 12:41:05,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798034040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:05,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:05,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:05,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639349528] [2024-06-14 12:41:05,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:05,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:05,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:05,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:05,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:05,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:05,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 186 transitions, 1896 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:05,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:05,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:05,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:05,599 INFO L124 PetriNetUnfolderBase]: 539/986 cut-off events. [2024-06-14 12:41:05,599 INFO L125 PetriNetUnfolderBase]: For 83845/83845 co-relation queries the response was YES. [2024-06-14 12:41:05,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6756 conditions, 986 events. 539/986 cut-off events. For 83845/83845 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4939 event pairs, 84 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 6653. Up to 667 conditions per place. [2024-06-14 12:41:05,607 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 88 changer transitions 0/217 dead transitions. [2024-06-14 12:41:05,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 217 transitions, 2544 flow [2024-06-14 12:41:05,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:41:05,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:41:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-14 12:41:05,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2024-06-14 12:41:05,617 INFO L175 Difference]: Start difference. First operand has 215 places, 186 transitions, 1896 flow. Second operand 13 states and 166 transitions. [2024-06-14 12:41:05,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 217 transitions, 2544 flow [2024-06-14 12:41:05,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 217 transitions, 2486 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:41:05,799 INFO L231 Difference]: Finished difference. Result has 225 places, 188 transitions, 2040 flow [2024-06-14 12:41:05,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2040, PETRI_PLACES=225, PETRI_TRANSITIONS=188} [2024-06-14 12:41:05,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-14 12:41:05,801 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 188 transitions, 2040 flow [2024-06-14 12:41:05,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:05,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:05,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:05,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:41:05,802 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)] === [2024-06-14 12:41:05,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash 334933187, now seen corresponding path program 11 times [2024-06-14 12:41:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:05,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635258380] [2024-06-14 12:41:05,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:06,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:06,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635258380] [2024-06-14 12:41:06,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635258380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:06,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:06,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:06,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26738789] [2024-06-14 12:41:06,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:06,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:06,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:06,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:06,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 188 transitions, 2040 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:06,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:06,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:06,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:07,135 INFO L124 PetriNetUnfolderBase]: 560/1033 cut-off events. [2024-06-14 12:41:07,135 INFO L125 PetriNetUnfolderBase]: For 113362/113362 co-relation queries the response was YES. [2024-06-14 12:41:07,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6993 conditions, 1033 events. 560/1033 cut-off events. For 113362/113362 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5273 event pairs, 87 based on Foata normal form. 16/1047 useless extension candidates. Maximal degree in co-relation 6888. Up to 679 conditions per place. [2024-06-14 12:41:07,143 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 120 selfloop transitions, 88 changer transitions 12/222 dead transitions. [2024-06-14 12:41:07,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 222 transitions, 2715 flow [2024-06-14 12:41:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:41:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:41:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-14 12:41:07,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 12:41:07,144 INFO L175 Difference]: Start difference. First operand has 225 places, 188 transitions, 2040 flow. Second operand 12 states and 162 transitions. [2024-06-14 12:41:07,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 222 transitions, 2715 flow [2024-06-14 12:41:07,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 222 transitions, 2491 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:07,309 INFO L231 Difference]: Finished difference. Result has 226 places, 184 transitions, 1969 flow [2024-06-14 12:41:07,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1969, PETRI_PLACES=226, PETRI_TRANSITIONS=184} [2024-06-14 12:41:07,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-14 12:41:07,310 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 184 transitions, 1969 flow [2024-06-14 12:41:07,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:07,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:07,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:41:07,311 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)] === [2024-06-14 12:41:07,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1352612161, now seen corresponding path program 12 times [2024-06-14 12:41:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062564232] [2024-06-14 12:41:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:07,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:08,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:08,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062564232] [2024-06-14 12:41:08,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062564232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:08,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:08,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484224810] [2024-06-14 12:41:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:08,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:08,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:08,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:08,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:08,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:08,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 184 transitions, 1969 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:08,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:08,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:08,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:08,400 INFO L124 PetriNetUnfolderBase]: 530/975 cut-off events. [2024-06-14 12:41:08,400 INFO L125 PetriNetUnfolderBase]: For 84290/84290 co-relation queries the response was YES. [2024-06-14 12:41:08,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6788 conditions, 975 events. 530/975 cut-off events. For 84290/84290 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4904 event pairs, 100 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 6682. Up to 858 conditions per place. [2024-06-14 12:41:08,408 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 158 selfloop transitions, 39 changer transitions 0/199 dead transitions. [2024-06-14 12:41:08,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 199 transitions, 2406 flow [2024-06-14 12:41:08,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:08,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:08,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:41:08,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 12:41:08,409 INFO L175 Difference]: Start difference. First operand has 226 places, 184 transitions, 1969 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:41:08,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 199 transitions, 2406 flow [2024-06-14 12:41:08,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 199 transitions, 2184 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:08,585 INFO L231 Difference]: Finished difference. Result has 224 places, 185 transitions, 1842 flow [2024-06-14 12:41:08,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1842, PETRI_PLACES=224, PETRI_TRANSITIONS=185} [2024-06-14 12:41:08,585 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-14 12:41:08,585 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 185 transitions, 1842 flow [2024-06-14 12:41:08,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:08,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:08,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:08,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:41:08,585 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)] === [2024-06-14 12:41:08,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:08,586 INFO L85 PathProgramCache]: Analyzing trace with hash 680967093, now seen corresponding path program 3 times [2024-06-14 12:41:08,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:08,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240656994] [2024-06-14 12:41:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:08,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:09,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:09,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240656994] [2024-06-14 12:41:09,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240656994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:09,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:09,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:09,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240872444] [2024-06-14 12:41:09,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:09,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:09,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:09,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:09,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:09,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:09,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 185 transitions, 1842 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:09,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:09,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:09,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:09,857 INFO L124 PetriNetUnfolderBase]: 536/985 cut-off events. [2024-06-14 12:41:09,857 INFO L125 PetriNetUnfolderBase]: For 86785/86785 co-relation queries the response was YES. [2024-06-14 12:41:09,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6670 conditions, 985 events. 536/985 cut-off events. For 86785/86785 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4968 event pairs, 90 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6564. Up to 784 conditions per place. [2024-06-14 12:41:09,863 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 51 changer transitions 0/205 dead transitions. [2024-06-14 12:41:09,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 205 transitions, 2308 flow [2024-06-14 12:41:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:41:09,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 12:41:09,864 INFO L175 Difference]: Start difference. First operand has 224 places, 185 transitions, 1842 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:41:09,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 205 transitions, 2308 flow [2024-06-14 12:41:10,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 205 transitions, 2226 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:10,038 INFO L231 Difference]: Finished difference. Result has 227 places, 187 transitions, 1891 flow [2024-06-14 12:41:10,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1891, PETRI_PLACES=227, PETRI_TRANSITIONS=187} [2024-06-14 12:41:10,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-14 12:41:10,039 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 187 transitions, 1891 flow [2024-06-14 12:41:10,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:10,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:10,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:10,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:41:10,039 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)] === [2024-06-14 12:41:10,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash 674533167, now seen corresponding path program 13 times [2024-06-14 12:41:10,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:10,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293712641] [2024-06-14 12:41:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:10,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:10,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:10,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293712641] [2024-06-14 12:41:10,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293712641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:10,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:10,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:10,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068884724] [2024-06-14 12:41:10,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:10,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:10,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:10,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:10,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 187 transitions, 1891 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:10,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:10,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:10,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:11,338 INFO L124 PetriNetUnfolderBase]: 593/1094 cut-off events. [2024-06-14 12:41:11,339 INFO L125 PetriNetUnfolderBase]: For 128716/128716 co-relation queries the response was YES. [2024-06-14 12:41:11,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 1094 events. 593/1094 cut-off events. For 128716/128716 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5652 event pairs, 107 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 8163. Up to 757 conditions per place. [2024-06-14 12:41:11,347 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 58 changer transitions 0/217 dead transitions. [2024-06-14 12:41:11,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 217 transitions, 2739 flow [2024-06-14 12:41:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:41:11,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-14 12:41:11,349 INFO L175 Difference]: Start difference. First operand has 227 places, 187 transitions, 1891 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:41:11,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 217 transitions, 2739 flow [2024-06-14 12:41:11,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 217 transitions, 2628 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:11,576 INFO L231 Difference]: Finished difference. Result has 230 places, 191 transitions, 1986 flow [2024-06-14 12:41:11,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1986, PETRI_PLACES=230, PETRI_TRANSITIONS=191} [2024-06-14 12:41:11,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-14 12:41:11,577 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 191 transitions, 1986 flow [2024-06-14 12:41:11,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:11,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:11,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:11,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:41:11,577 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)] === [2024-06-14 12:41:11,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:11,578 INFO L85 PathProgramCache]: Analyzing trace with hash 508299387, now seen corresponding path program 14 times [2024-06-14 12:41:11,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:11,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151919175] [2024-06-14 12:41:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:11,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:12,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:12,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151919175] [2024-06-14 12:41:12,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151919175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:12,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:12,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:12,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063003912] [2024-06-14 12:41:12,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:12,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:12,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:12,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:12,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:12,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:12,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 191 transitions, 1986 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:12,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:12,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:12,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:12,858 INFO L124 PetriNetUnfolderBase]: 597/1102 cut-off events. [2024-06-14 12:41:12,858 INFO L125 PetriNetUnfolderBase]: For 132633/132633 co-relation queries the response was YES. [2024-06-14 12:41:12,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8421 conditions, 1102 events. 597/1102 cut-off events. For 132633/132633 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5725 event pairs, 110 based on Foata normal form. 2/1102 useless extension candidates. Maximal degree in co-relation 8312. Up to 890 conditions per place. [2024-06-14 12:41:12,867 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 56 changer transitions 0/212 dead transitions. [2024-06-14 12:41:12,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 212 transitions, 2467 flow [2024-06-14 12:41:12,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:41:12,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:41:12,868 INFO L175 Difference]: Start difference. First operand has 230 places, 191 transitions, 1986 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:41:12,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 212 transitions, 2467 flow [2024-06-14 12:41:13,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 212 transitions, 2396 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:13,123 INFO L231 Difference]: Finished difference. Result has 235 places, 192 transitions, 2048 flow [2024-06-14 12:41:13,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2048, PETRI_PLACES=235, PETRI_TRANSITIONS=192} [2024-06-14 12:41:13,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-14 12:41:13,123 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 192 transitions, 2048 flow [2024-06-14 12:41:13,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:13,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:13,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:13,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:41:13,124 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)] === [2024-06-14 12:41:13,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:13,124 INFO L85 PathProgramCache]: Analyzing trace with hash 505635803, now seen corresponding path program 4 times [2024-06-14 12:41:13,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:13,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986211757] [2024-06-14 12:41:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:13,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:13,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986211757] [2024-06-14 12:41:13,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986211757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:13,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:13,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:13,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623666180] [2024-06-14 12:41:13,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:13,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:13,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:13,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:13,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:13,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:13,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 192 transitions, 2048 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:13,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:13,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:13,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:14,299 INFO L124 PetriNetUnfolderBase]: 613/1128 cut-off events. [2024-06-14 12:41:14,299 INFO L125 PetriNetUnfolderBase]: For 141553/141553 co-relation queries the response was YES. [2024-06-14 12:41:14,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8827 conditions, 1128 events. 613/1128 cut-off events. For 141553/141553 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5876 event pairs, 98 based on Foata normal form. 2/1128 useless extension candidates. Maximal degree in co-relation 8716. Up to 870 conditions per place. [2024-06-14 12:41:14,309 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 63 changer transitions 0/216 dead transitions. [2024-06-14 12:41:14,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 216 transitions, 2712 flow [2024-06-14 12:41:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:41:14,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 12:41:14,310 INFO L175 Difference]: Start difference. First operand has 235 places, 192 transitions, 2048 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:41:14,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 216 transitions, 2712 flow [2024-06-14 12:41:14,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 216 transitions, 2565 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:14,608 INFO L231 Difference]: Finished difference. Result has 238 places, 196 transitions, 2084 flow [2024-06-14 12:41:14,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2084, PETRI_PLACES=238, PETRI_TRANSITIONS=196} [2024-06-14 12:41:14,609 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-14 12:41:14,609 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 196 transitions, 2084 flow [2024-06-14 12:41:14,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:14,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:14,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:14,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:41:14,610 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)] === [2024-06-14 12:41:14,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:14,610 INFO L85 PathProgramCache]: Analyzing trace with hash 674710983, now seen corresponding path program 5 times [2024-06-14 12:41:14,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:14,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641103895] [2024-06-14 12:41:14,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:14,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:15,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:15,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641103895] [2024-06-14 12:41:15,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641103895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:15,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:15,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:15,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128797796] [2024-06-14 12:41:15,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:15,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:15,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:15,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:15,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 196 transitions, 2084 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:15,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:15,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:15,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:15,861 INFO L124 PetriNetUnfolderBase]: 609/1122 cut-off events. [2024-06-14 12:41:15,861 INFO L125 PetriNetUnfolderBase]: For 139807/139807 co-relation queries the response was YES. [2024-06-14 12:41:15,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8702 conditions, 1122 events. 609/1122 cut-off events. For 139807/139807 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5849 event pairs, 97 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 8590. Up to 896 conditions per place. [2024-06-14 12:41:15,871 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 54 changer transitions 0/217 dead transitions. [2024-06-14 12:41:15,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 217 transitions, 2706 flow [2024-06-14 12:41:15,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:41:15,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-14 12:41:15,872 INFO L175 Difference]: Start difference. First operand has 238 places, 196 transitions, 2084 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:41:15,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 217 transitions, 2706 flow [2024-06-14 12:41:16,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 217 transitions, 2625 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:16,183 INFO L231 Difference]: Finished difference. Result has 242 places, 196 transitions, 2116 flow [2024-06-14 12:41:16,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2116, PETRI_PLACES=242, PETRI_TRANSITIONS=196} [2024-06-14 12:41:16,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-14 12:41:16,184 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 196 transitions, 2116 flow [2024-06-14 12:41:16,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:16,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:16,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:16,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:41:16,184 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)] === [2024-06-14 12:41:16,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash 674537817, now seen corresponding path program 15 times [2024-06-14 12:41:16,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:16,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615177943] [2024-06-14 12:41:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615177943] [2024-06-14 12:41:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615177943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836867178] [2024-06-14 12:41:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:17,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:17,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:17,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 196 transitions, 2116 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:17,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:17,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:17,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:17,553 INFO L124 PetriNetUnfolderBase]: 622/1155 cut-off events. [2024-06-14 12:41:17,553 INFO L125 PetriNetUnfolderBase]: For 170229/170229 co-relation queries the response was YES. [2024-06-14 12:41:17,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8596 conditions, 1155 events. 622/1155 cut-off events. For 170229/170229 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6116 event pairs, 116 based on Foata normal form. 16/1169 useless extension candidates. Maximal degree in co-relation 8482. Up to 883 conditions per place. [2024-06-14 12:41:17,565 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 155 selfloop transitions, 53 changer transitions 12/222 dead transitions. [2024-06-14 12:41:17,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 222 transitions, 2630 flow [2024-06-14 12:41:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:17,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:41:17,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-14 12:41:17,566 INFO L175 Difference]: Start difference. First operand has 242 places, 196 transitions, 2116 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:41:17,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 222 transitions, 2630 flow [2024-06-14 12:41:17,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 222 transitions, 2462 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:17,851 INFO L231 Difference]: Finished difference. Result has 245 places, 191 transitions, 2014 flow [2024-06-14 12:41:17,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2014, PETRI_PLACES=245, PETRI_TRANSITIONS=191} [2024-06-14 12:41:17,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 12:41:17,852 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 191 transitions, 2014 flow [2024-06-14 12:41:17,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:17,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:17,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:17,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:41:17,853 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)] === [2024-06-14 12:41:17,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2130114439, now seen corresponding path program 1 times [2024-06-14 12:41:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440195024] [2024-06-14 12:41:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:17,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:18,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:18,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440195024] [2024-06-14 12:41:18,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440195024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:18,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:18,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:18,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236685426] [2024-06-14 12:41:18,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:18,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:18,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:18,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:18,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:18,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:18,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 191 transitions, 2014 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) [2024-06-14 12:41:18,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:18,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:18,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:19,129 INFO L124 PetriNetUnfolderBase]: 592/1097 cut-off events. [2024-06-14 12:41:19,129 INFO L125 PetriNetUnfolderBase]: For 139811/139811 co-relation queries the response was YES. [2024-06-14 12:41:19,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8426 conditions, 1097 events. 592/1097 cut-off events. For 139811/139811 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5717 event pairs, 115 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 8310. Up to 1052 conditions per place. [2024-06-14 12:41:19,139 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 19 changer transitions 0/206 dead transitions. [2024-06-14 12:41:19,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 206 transitions, 2482 flow [2024-06-14 12:41:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:19,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:41:19,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:41:19,140 INFO L175 Difference]: Start difference. First operand has 245 places, 191 transitions, 2014 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:41:19,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 206 transitions, 2482 flow [2024-06-14 12:41:19,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 206 transitions, 2346 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-14 12:41:19,448 INFO L231 Difference]: Finished difference. Result has 242 places, 193 transitions, 1959 flow [2024-06-14 12:41:19,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1959, PETRI_PLACES=242, PETRI_TRANSITIONS=193} [2024-06-14 12:41:19,448 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-14 12:41:19,449 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 193 transitions, 1959 flow [2024-06-14 12:41:19,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:19,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:19,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:19,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:41:19,449 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)] === [2024-06-14 12:41:19,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:19,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1063101289, now seen corresponding path program 16 times [2024-06-14 12:41:19,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:19,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889138869] [2024-06-14 12:41:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:19,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:20,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889138869] [2024-06-14 12:41:20,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889138869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:20,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:20,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:20,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438544891] [2024-06-14 12:41:20,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:20,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:20,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:20,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:20,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:20,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:20,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 193 transitions, 1959 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:20,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:20,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:20,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:20,728 INFO L124 PetriNetUnfolderBase]: 616/1149 cut-off events. [2024-06-14 12:41:20,728 INFO L125 PetriNetUnfolderBase]: For 169834/169834 co-relation queries the response was YES. [2024-06-14 12:41:20,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8437 conditions, 1149 events. 616/1149 cut-off events. For 169834/169834 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6098 event pairs, 114 based on Foata normal form. 14/1161 useless extension candidates. Maximal degree in co-relation 8321. Up to 1003 conditions per place. [2024-06-14 12:41:20,738 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 176 selfloop transitions, 24 changer transitions 13/215 dead transitions. [2024-06-14 12:41:20,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 215 transitions, 2470 flow [2024-06-14 12:41:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:41:20,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:41:20,739 INFO L175 Difference]: Start difference. First operand has 242 places, 193 transitions, 1959 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:41:20,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 215 transitions, 2470 flow [2024-06-14 12:41:21,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 215 transitions, 2414 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:21,036 INFO L231 Difference]: Finished difference. Result has 245 places, 189 transitions, 1924 flow [2024-06-14 12:41:21,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=245, PETRI_TRANSITIONS=189} [2024-06-14 12:41:21,037 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 12:41:21,037 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 189 transitions, 1924 flow [2024-06-14 12:41:21,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:21,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:21,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:21,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:41:21,037 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)] === [2024-06-14 12:41:21,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1943453895, now seen corresponding path program 6 times [2024-06-14 12:41:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:21,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535640896] [2024-06-14 12:41:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:21,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:21,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535640896] [2024-06-14 12:41:21,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535640896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:21,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:21,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:21,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452266917] [2024-06-14 12:41:21,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:21,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:21,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:21,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:21,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:21,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 189 transitions, 1924 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:21,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:21,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:21,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:22,351 INFO L124 PetriNetUnfolderBase]: 592/1105 cut-off events. [2024-06-14 12:41:22,351 INFO L125 PetriNetUnfolderBase]: For 138931/138931 co-relation queries the response was YES. [2024-06-14 12:41:22,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8340 conditions, 1105 events. 592/1105 cut-off events. For 138931/138931 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5841 event pairs, 115 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 8223. Up to 1040 conditions per place. [2024-06-14 12:41:22,362 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 183 selfloop transitions, 24 changer transitions 1/210 dead transitions. [2024-06-14 12:41:22,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 210 transitions, 2437 flow [2024-06-14 12:41:22,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:41:22,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 12:41:22,363 INFO L175 Difference]: Start difference. First operand has 245 places, 189 transitions, 1924 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:41:22,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 210 transitions, 2437 flow [2024-06-14 12:41:22,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 210 transitions, 2373 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:22,675 INFO L231 Difference]: Finished difference. Result has 248 places, 193 transitions, 1972 flow [2024-06-14 12:41:22,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1972, PETRI_PLACES=248, PETRI_TRANSITIONS=193} [2024-06-14 12:41:22,675 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-14 12:41:22,675 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 193 transitions, 1972 flow [2024-06-14 12:41:22,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:22,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:22,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:22,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:41:22,676 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)] === [2024-06-14 12:41:22,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash 382387001, now seen corresponding path program 7 times [2024-06-14 12:41:22,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256708558] [2024-06-14 12:41:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:22,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:23,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:23,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256708558] [2024-06-14 12:41:23,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256708558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:23,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:23,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:23,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122206923] [2024-06-14 12:41:23,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:23,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:23,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:23,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:23,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:23,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:23,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 193 transitions, 1972 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:23,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:23,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:23,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:23,916 INFO L124 PetriNetUnfolderBase]: 596/1109 cut-off events. [2024-06-14 12:41:23,916 INFO L125 PetriNetUnfolderBase]: For 142793/142793 co-relation queries the response was YES. [2024-06-14 12:41:23,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8414 conditions, 1109 events. 596/1109 cut-off events. For 142793/142793 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5832 event pairs, 115 based on Foata normal form. 2/1109 useless extension candidates. Maximal degree in co-relation 8296. Up to 1029 conditions per place. [2024-06-14 12:41:23,927 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 27 changer transitions 0/208 dead transitions. [2024-06-14 12:41:23,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 208 transitions, 2444 flow [2024-06-14 12:41:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:41:23,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 12:41:23,928 INFO L175 Difference]: Start difference. First operand has 248 places, 193 transitions, 1972 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:41:23,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 208 transitions, 2444 flow [2024-06-14 12:41:24,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 208 transitions, 2379 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:24,261 INFO L231 Difference]: Finished difference. Result has 250 places, 195 transitions, 2002 flow [2024-06-14 12:41:24,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=250, PETRI_TRANSITIONS=195} [2024-06-14 12:41:24,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-14 12:41:24,262 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 195 transitions, 2002 flow [2024-06-14 12:41:24,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:24,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:24,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:24,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:41:24,262 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)] === [2024-06-14 12:41:24,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:24,263 INFO L85 PathProgramCache]: Analyzing trace with hash 375957725, now seen corresponding path program 17 times [2024-06-14 12:41:24,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:24,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885116321] [2024-06-14 12:41:24,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:24,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:24,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885116321] [2024-06-14 12:41:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885116321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:24,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:24,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726786696] [2024-06-14 12:41:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:24,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:24,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:24,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:25,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:25,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 195 transitions, 2002 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:25,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:25,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:25,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:25,370 INFO L124 PetriNetUnfolderBase]: 600/1117 cut-off events. [2024-06-14 12:41:25,370 INFO L125 PetriNetUnfolderBase]: For 146355/146355 co-relation queries the response was YES. [2024-06-14 12:41:25,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8500 conditions, 1117 events. 600/1117 cut-off events. For 146355/146355 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5893 event pairs, 121 based on Foata normal form. 2/1117 useless extension candidates. Maximal degree in co-relation 8381. Up to 1057 conditions per place. [2024-06-14 12:41:25,381 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 30 changer transitions 0/207 dead transitions. [2024-06-14 12:41:25,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 207 transitions, 2455 flow [2024-06-14 12:41:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:25,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:41:25,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:41:25,382 INFO L175 Difference]: Start difference. First operand has 250 places, 195 transitions, 2002 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:41:25,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 207 transitions, 2455 flow [2024-06-14 12:41:25,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 207 transitions, 2380 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:25,696 INFO L231 Difference]: Finished difference. Result has 252 places, 196 transitions, 2012 flow [2024-06-14 12:41:25,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2012, PETRI_PLACES=252, PETRI_TRANSITIONS=196} [2024-06-14 12:41:25,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 12:41:25,696 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 196 transitions, 2012 flow [2024-06-14 12:41:25,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:25,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:25,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:25,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:41:25,697 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)] === [2024-06-14 12:41:25,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1850653291, now seen corresponding path program 2 times [2024-06-14 12:41:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:25,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573337906] [2024-06-14 12:41:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:25,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:26,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:26,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573337906] [2024-06-14 12:41:26,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573337906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:26,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:26,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:26,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907563143] [2024-06-14 12:41:26,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:26,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:26,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:26,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:26,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:26,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:26,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 196 transitions, 2012 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) [2024-06-14 12:41:26,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:26,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:26,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:26,968 INFO L124 PetriNetUnfolderBase]: 604/1125 cut-off events. [2024-06-14 12:41:26,968 INFO L125 PetriNetUnfolderBase]: For 151072/151072 co-relation queries the response was YES. [2024-06-14 12:41:26,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8585 conditions, 1125 events. 604/1125 cut-off events. For 151072/151072 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5961 event pairs, 113 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 8465. Up to 1065 conditions per place. [2024-06-14 12:41:26,977 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 23 changer transitions 0/210 dead transitions. [2024-06-14 12:41:26,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 210 transitions, 2480 flow [2024-06-14 12:41:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:26,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 12:41:26,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 12:41:26,978 INFO L175 Difference]: Start difference. First operand has 252 places, 196 transitions, 2012 flow. Second operand 10 states and 113 transitions. [2024-06-14 12:41:26,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 210 transitions, 2480 flow [2024-06-14 12:41:27,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 210 transitions, 2406 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:27,307 INFO L231 Difference]: Finished difference. Result has 254 places, 197 transitions, 2014 flow [2024-06-14 12:41:27,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2014, PETRI_PLACES=254, PETRI_TRANSITIONS=197} [2024-06-14 12:41:27,308 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:41:27,308 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 197 transitions, 2014 flow [2024-06-14 12:41:27,308 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) [2024-06-14 12:41:27,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:27,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:27,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:41:27,309 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)] === [2024-06-14 12:41:27,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2102644411, now seen corresponding path program 3 times [2024-06-14 12:41:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139228084] [2024-06-14 12:41:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:28,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:28,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139228084] [2024-06-14 12:41:28,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139228084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:28,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:28,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832926292] [2024-06-14 12:41:28,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:28,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:28,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:28,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:28,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 197 transitions, 2014 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) [2024-06-14 12:41:28,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:28,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:28,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:28,556 INFO L124 PetriNetUnfolderBase]: 608/1133 cut-off events. [2024-06-14 12:41:28,556 INFO L125 PetriNetUnfolderBase]: For 155095/155095 co-relation queries the response was YES. [2024-06-14 12:41:28,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8666 conditions, 1133 events. 608/1133 cut-off events. For 155095/155095 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6028 event pairs, 113 based on Foata normal form. 2/1133 useless extension candidates. Maximal degree in co-relation 8545. Up to 1100 conditions per place. [2024-06-14 12:41:28,567 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 193 selfloop transitions, 15 changer transitions 0/210 dead transitions. [2024-06-14 12:41:28,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 210 transitions, 2482 flow [2024-06-14 12:41:28,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:41:28,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 12:41:28,568 INFO L175 Difference]: Start difference. First operand has 254 places, 197 transitions, 2014 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:41:28,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 210 transitions, 2482 flow [2024-06-14 12:41:28,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 210 transitions, 2332 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-14 12:41:28,913 INFO L231 Difference]: Finished difference. Result has 252 places, 198 transitions, 1926 flow [2024-06-14 12:41:28,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1926, PETRI_PLACES=252, PETRI_TRANSITIONS=198} [2024-06-14 12:41:28,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 12:41:28,913 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 198 transitions, 1926 flow [2024-06-14 12:41:28,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:28,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:28,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:28,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:41:28,914 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)] === [2024-06-14 12:41:28,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2102398147, now seen corresponding path program 18 times [2024-06-14 12:41:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700036736] [2024-06-14 12:41:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:28,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:29,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700036736] [2024-06-14 12:41:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700036736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:29,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:29,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396840175] [2024-06-14 12:41:29,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:29,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:29,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:29,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:29,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:29,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 198 transitions, 1926 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:29,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:29,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:29,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:30,010 INFO L124 PetriNetUnfolderBase]: 612/1141 cut-off events. [2024-06-14 12:41:30,010 INFO L125 PetriNetUnfolderBase]: For 157861/157861 co-relation queries the response was YES. [2024-06-14 12:41:30,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 1141 events. 612/1141 cut-off events. For 157861/157861 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6080 event pairs, 123 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 8521. Up to 1108 conditions per place. [2024-06-14 12:41:30,020 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 192 selfloop transitions, 16 changer transitions 0/210 dead transitions. [2024-06-14 12:41:30,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 210 transitions, 2387 flow [2024-06-14 12:41:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:41:30,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 12:41:30,021 INFO L175 Difference]: Start difference. First operand has 252 places, 198 transitions, 1926 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:41:30,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 210 transitions, 2387 flow [2024-06-14 12:41:30,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 210 transitions, 2316 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:30,365 INFO L231 Difference]: Finished difference. Result has 252 places, 199 transitions, 1914 flow [2024-06-14 12:41:30,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1914, PETRI_PLACES=252, PETRI_TRANSITIONS=199} [2024-06-14 12:41:30,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-14 12:41:30,366 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 199 transitions, 1914 flow [2024-06-14 12:41:30,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:30,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:30,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:30,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:41:30,366 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)] === [2024-06-14 12:41:30,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:30,366 INFO L85 PathProgramCache]: Analyzing trace with hash 375957911, now seen corresponding path program 8 times [2024-06-14 12:41:30,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:30,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793131517] [2024-06-14 12:41:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:30,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:31,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:31,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:31,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793131517] [2024-06-14 12:41:31,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793131517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:31,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:31,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:31,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37448343] [2024-06-14 12:41:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:31,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:31,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:31,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 199 transitions, 1914 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:31,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:31,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:31,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:31,488 INFO L124 PetriNetUnfolderBase]: 618/1151 cut-off events. [2024-06-14 12:41:31,488 INFO L125 PetriNetUnfolderBase]: For 162492/162492 co-relation queries the response was YES. [2024-06-14 12:41:31,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8695 conditions, 1151 events. 618/1151 cut-off events. For 162492/162492 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6128 event pairs, 104 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 8575. Up to 982 conditions per place. [2024-06-14 12:41:31,496 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 167 selfloop transitions, 50 changer transitions 0/219 dead transitions. [2024-06-14 12:41:31,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 219 transitions, 2600 flow [2024-06-14 12:41:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:41:31,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:41:31,497 INFO L175 Difference]: Start difference. First operand has 252 places, 199 transitions, 1914 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:41:31,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 219 transitions, 2600 flow [2024-06-14 12:41:31,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 219 transitions, 2538 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:31,848 INFO L231 Difference]: Finished difference. Result has 255 places, 203 transitions, 2040 flow [2024-06-14 12:41:31,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2040, PETRI_PLACES=255, PETRI_TRANSITIONS=203} [2024-06-14 12:41:31,849 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:41:31,849 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 203 transitions, 2040 flow [2024-06-14 12:41:31,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:31,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:31,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:31,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:41:31,849 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)] === [2024-06-14 12:41:31,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash 39433497, now seen corresponding path program 4 times [2024-06-14 12:41:31,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:31,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480042843] [2024-06-14 12:41:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:31,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480042843] [2024-06-14 12:41:32,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480042843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:32,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:32,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:32,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15894854] [2024-06-14 12:41:32,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:32,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:32,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:32,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:32,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 203 transitions, 2040 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) [2024-06-14 12:41:32,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:32,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:32,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:33,326 INFO L124 PetriNetUnfolderBase]: 622/1159 cut-off events. [2024-06-14 12:41:33,326 INFO L125 PetriNetUnfolderBase]: For 165963/165963 co-relation queries the response was YES. [2024-06-14 12:41:33,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8971 conditions, 1159 events. 622/1159 cut-off events. For 165963/165963 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6188 event pairs, 117 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 8849. Up to 1121 conditions per place. [2024-06-14 12:41:33,336 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 200 selfloop transitions, 15 changer transitions 0/217 dead transitions. [2024-06-14 12:41:33,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 217 transitions, 2526 flow [2024-06-14 12:41:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:41:33,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 12:41:33,337 INFO L175 Difference]: Start difference. First operand has 255 places, 203 transitions, 2040 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:41:33,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 217 transitions, 2526 flow [2024-06-14 12:41:33,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 217 transitions, 2337 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:33,688 INFO L231 Difference]: Finished difference. Result has 255 places, 204 transitions, 1915 flow [2024-06-14 12:41:33,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1915, PETRI_PLACES=255, PETRI_TRANSITIONS=204} [2024-06-14 12:41:33,688 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:41:33,688 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 204 transitions, 1915 flow [2024-06-14 12:41:33,688 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) [2024-06-14 12:41:33,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:33,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:33,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:41:33,688 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)] === [2024-06-14 12:41:33,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:33,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1560584107, now seen corresponding path program 19 times [2024-06-14 12:41:33,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:33,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478916288] [2024-06-14 12:41:33,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:33,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:34,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478916288] [2024-06-14 12:41:34,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478916288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:34,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:34,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:34,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382723556] [2024-06-14 12:41:34,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:34,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:34,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:34,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:34,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 204 transitions, 1915 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:34,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:34,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:34,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:34,815 INFO L124 PetriNetUnfolderBase]: 626/1167 cut-off events. [2024-06-14 12:41:34,815 INFO L125 PetriNetUnfolderBase]: For 169808/169808 co-relation queries the response was YES. [2024-06-14 12:41:34,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8765 conditions, 1167 events. 626/1167 cut-off events. For 169808/169808 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6253 event pairs, 123 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 8645. Up to 1072 conditions per place. [2024-06-14 12:41:34,826 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 182 selfloop transitions, 34 changer transitions 0/218 dead transitions. [2024-06-14 12:41:34,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 218 transitions, 2566 flow [2024-06-14 12:41:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 12:41:34,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 12:41:34,827 INFO L175 Difference]: Start difference. First operand has 255 places, 204 transitions, 1915 flow. Second operand 10 states and 113 transitions. [2024-06-14 12:41:34,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 218 transitions, 2566 flow [2024-06-14 12:41:35,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 218 transitions, 2512 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:35,222 INFO L231 Difference]: Finished difference. Result has 257 places, 205 transitions, 1956 flow [2024-06-14 12:41:35,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1956, PETRI_PLACES=257, PETRI_TRANSITIONS=205} [2024-06-14 12:41:35,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 12:41:35,223 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 205 transitions, 1956 flow [2024-06-14 12:41:35,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:35,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:35,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:35,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:41:35,223 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)] === [2024-06-14 12:41:35,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash 376130705, now seen corresponding path program 20 times [2024-06-14 12:41:35,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:35,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102811006] [2024-06-14 12:41:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:35,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:35,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:35,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:35,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102811006] [2024-06-14 12:41:35,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102811006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:35,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:35,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:35,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707899516] [2024-06-14 12:41:35,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:35,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:35,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:35,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:35,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:36,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:36,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 205 transitions, 1956 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:36,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:36,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:36,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:36,452 INFO L124 PetriNetUnfolderBase]: 639/1200 cut-off events. [2024-06-14 12:41:36,452 INFO L125 PetriNetUnfolderBase]: For 209491/209491 co-relation queries the response was YES. [2024-06-14 12:41:36,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8531 conditions, 1200 events. 639/1200 cut-off events. For 209491/209491 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6519 event pairs, 118 based on Foata normal form. 16/1214 useless extension candidates. Maximal degree in co-relation 8410. Up to 1060 conditions per place. [2024-06-14 12:41:36,463 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 185 selfloop transitions, 26 changer transitions 12/225 dead transitions. [2024-06-14 12:41:36,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 225 transitions, 2466 flow [2024-06-14 12:41:36,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:41:36,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 12:41:36,464 INFO L175 Difference]: Start difference. First operand has 257 places, 205 transitions, 1956 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:41:36,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 225 transitions, 2466 flow [2024-06-14 12:41:36,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 225 transitions, 2270 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:36,829 INFO L231 Difference]: Finished difference. Result has 258 places, 200 transitions, 1764 flow [2024-06-14 12:41:36,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1764, PETRI_PLACES=258, PETRI_TRANSITIONS=200} [2024-06-14 12:41:36,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-14 12:41:36,829 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 200 transitions, 1764 flow [2024-06-14 12:41:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:36,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:36,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:41:36,830 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)] === [2024-06-14 12:41:36,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:36,830 INFO L85 PathProgramCache]: Analyzing trace with hash 39789687, now seen corresponding path program 5 times [2024-06-14 12:41:36,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:36,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137971969] [2024-06-14 12:41:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:36,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137971969] [2024-06-14 12:41:37,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137971969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:37,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:37,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:37,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026572455] [2024-06-14 12:41:37,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:37,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:37,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:37,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:37,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:37,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:37,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 200 transitions, 1764 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) [2024-06-14 12:41:37,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:37,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:37,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:38,208 INFO L124 PetriNetUnfolderBase]: 530/985 cut-off events. [2024-06-14 12:41:38,209 INFO L125 PetriNetUnfolderBase]: For 69063/69063 co-relation queries the response was YES. [2024-06-14 12:41:38,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5352 conditions, 985 events. 530/985 cut-off events. For 69063/69063 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5117 event pairs, 65 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 5231. Up to 947 conditions per place. [2024-06-14 12:41:38,216 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 197 selfloop transitions, 14 changer transitions 0/213 dead transitions. [2024-06-14 12:41:38,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 213 transitions, 2214 flow [2024-06-14 12:41:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 12:41:38,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 12:41:38,217 INFO L175 Difference]: Start difference. First operand has 258 places, 200 transitions, 1764 flow. Second operand 10 states and 106 transitions. [2024-06-14 12:41:38,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 213 transitions, 2214 flow [2024-06-14 12:41:38,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 213 transitions, 2082 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:41:38,389 INFO L231 Difference]: Finished difference. Result has 255 places, 200 transitions, 1664 flow [2024-06-14 12:41:38,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1664, PETRI_PLACES=255, PETRI_TRANSITIONS=200} [2024-06-14 12:41:38,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 12:41:38,390 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 200 transitions, 1664 flow [2024-06-14 12:41:38,390 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) [2024-06-14 12:41:38,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:38,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:38,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:41:38,390 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)] === [2024-06-14 12:41:38,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:38,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1907231943, now seen corresponding path program 9 times [2024-06-14 12:41:38,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:38,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65860723] [2024-06-14 12:41:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:38,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:39,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:39,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65860723] [2024-06-14 12:41:39,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65860723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:39,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:39,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:39,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239061224] [2024-06-14 12:41:39,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:39,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:39,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:39,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:39,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 200 transitions, 1664 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:39,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:39,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:39,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:39,633 INFO L124 PetriNetUnfolderBase]: 526/979 cut-off events. [2024-06-14 12:41:39,633 INFO L125 PetriNetUnfolderBase]: For 61569/61569 co-relation queries the response was YES. [2024-06-14 12:41:39,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5018 conditions, 979 events. 526/979 cut-off events. For 61569/61569 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5107 event pairs, 68 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 4898. Up to 931 conditions per place. [2024-06-14 12:41:39,641 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 17 changer transitions 0/214 dead transitions. [2024-06-14 12:41:39,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 214 transitions, 2118 flow [2024-06-14 12:41:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:41:39,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:41:39,642 INFO L175 Difference]: Start difference. First operand has 255 places, 200 transitions, 1664 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:41:39,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 214 transitions, 2118 flow [2024-06-14 12:41:39,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 214 transitions, 2029 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:39,791 INFO L231 Difference]: Finished difference. Result has 254 places, 200 transitions, 1614 flow [2024-06-14 12:41:39,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1575, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1614, PETRI_PLACES=254, PETRI_TRANSITIONS=200} [2024-06-14 12:41:39,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 12:41:39,792 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 200 transitions, 1614 flow [2024-06-14 12:41:39,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:39,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:39,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:39,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:41:39,792 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)] === [2024-06-14 12:41:39,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:39,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2123612251, now seen corresponding path program 10 times [2024-06-14 12:41:39,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:39,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337021939] [2024-06-14 12:41:39,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:39,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:40,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337021939] [2024-06-14 12:41:40,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337021939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:40,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:40,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:40,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289800294] [2024-06-14 12:41:40,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:40,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:40,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:40,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:40,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:40,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:40,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 200 transitions, 1614 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:40,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:40,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:40,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:40,940 INFO L124 PetriNetUnfolderBase]: 522/973 cut-off events. [2024-06-14 12:41:40,940 INFO L125 PetriNetUnfolderBase]: For 54867/54867 co-relation queries the response was YES. [2024-06-14 12:41:40,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 973 events. 522/973 cut-off events. For 54867/54867 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5103 event pairs, 63 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 4591. Up to 877 conditions per place. [2024-06-14 12:41:40,948 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 180 selfloop transitions, 32 changer transitions 0/214 dead transitions. [2024-06-14 12:41:40,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 214 transitions, 2068 flow [2024-06-14 12:41:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:41:40,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 12:41:40,950 INFO L175 Difference]: Start difference. First operand has 254 places, 200 transitions, 1614 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:41:40,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 214 transitions, 2068 flow [2024-06-14 12:41:41,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 214 transitions, 2013 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:41,107 INFO L231 Difference]: Finished difference. Result has 256 places, 200 transitions, 1628 flow [2024-06-14 12:41:41,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1628, PETRI_PLACES=256, PETRI_TRANSITIONS=200} [2024-06-14 12:41:41,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-14 12:41:41,107 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 200 transitions, 1628 flow [2024-06-14 12:41:41,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:41,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:41,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:41,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:41:41,107 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)] === [2024-06-14 12:41:41,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash 557551653, now seen corresponding path program 1 times [2024-06-14 12:41:41,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:41,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086015088] [2024-06-14 12:41:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:42,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086015088] [2024-06-14 12:41:42,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086015088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:42,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:42,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:42,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166038140] [2024-06-14 12:41:42,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:42,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:42,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:42,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:42,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 200 transitions, 1628 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) [2024-06-14 12:41:42,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:42,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:42,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:42,584 INFO L124 PetriNetUnfolderBase]: 549/1034 cut-off events. [2024-06-14 12:41:42,584 INFO L125 PetriNetUnfolderBase]: For 103200/103200 co-relation queries the response was YES. [2024-06-14 12:41:42,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5434 conditions, 1034 events. 549/1034 cut-off events. For 103200/103200 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5438 event pairs, 76 based on Foata normal form. 8/1040 useless extension candidates. Maximal degree in co-relation 5315. Up to 467 conditions per place. [2024-06-14 12:41:42,592 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 81 changer transitions 18/231 dead transitions. [2024-06-14 12:41:42,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 231 transitions, 2350 flow [2024-06-14 12:41:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:41:42,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:41:42,593 INFO L175 Difference]: Start difference. First operand has 256 places, 200 transitions, 1628 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:41:42,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 231 transitions, 2350 flow [2024-06-14 12:41:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 231 transitions, 2165 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:42,782 INFO L231 Difference]: Finished difference. Result has 256 places, 196 transitions, 1587 flow [2024-06-14 12:41:42,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1587, PETRI_PLACES=256, PETRI_TRANSITIONS=196} [2024-06-14 12:41:42,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-14 12:41:42,783 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 196 transitions, 1587 flow [2024-06-14 12:41:42,783 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) [2024-06-14 12:41:42,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:42,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:42,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:41:42,783 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)] === [2024-06-14 12:41:42,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1936549693, now seen corresponding path program 2 times [2024-06-14 12:41:42,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:42,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468540107] [2024-06-14 12:41:42,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:43,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468540107] [2024-06-14 12:41:43,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468540107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:43,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773177089] [2024-06-14 12:41:43,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:43,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:43,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:43,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 196 transitions, 1587 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) [2024-06-14 12:41:43,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:43,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:43,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:44,176 INFO L124 PetriNetUnfolderBase]: 568/1075 cut-off events. [2024-06-14 12:41:44,176 INFO L125 PetriNetUnfolderBase]: For 145817/145817 co-relation queries the response was YES. [2024-06-14 12:41:44,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 1075 events. 568/1075 cut-off events. For 145817/145817 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5710 event pairs, 91 based on Foata normal form. 8/1081 useless extension candidates. Maximal degree in co-relation 6317. Up to 566 conditions per place. [2024-06-14 12:41:44,185 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 83 changer transitions 16/231 dead transitions. [2024-06-14 12:41:44,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 231 transitions, 2341 flow [2024-06-14 12:41:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-14 12:41:44,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-14 12:41:44,186 INFO L175 Difference]: Start difference. First operand has 256 places, 196 transitions, 1587 flow. Second operand 11 states and 149 transitions. [2024-06-14 12:41:44,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 231 transitions, 2341 flow [2024-06-14 12:41:44,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 231 transitions, 2208 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:44,431 INFO L231 Difference]: Finished difference. Result has 251 places, 194 transitions, 1618 flow [2024-06-14 12:41:44,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1464, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1618, PETRI_PLACES=251, PETRI_TRANSITIONS=194} [2024-06-14 12:41:44,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-14 12:41:44,431 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 194 transitions, 1618 flow [2024-06-14 12:41:44,431 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) [2024-06-14 12:41:44,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:44,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:44,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:41:44,431 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)] === [2024-06-14 12:41:44,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1932974773, now seen corresponding path program 3 times [2024-06-14 12:41:44,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:44,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398387343] [2024-06-14 12:41:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:44,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:45,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398387343] [2024-06-14 12:41:45,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398387343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:45,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:45,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339899705] [2024-06-14 12:41:45,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:45,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:45,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:45,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 194 transitions, 1618 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) [2024-06-14 12:41:45,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:45,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:45,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:45,790 INFO L124 PetriNetUnfolderBase]: 554/1049 cut-off events. [2024-06-14 12:41:45,790 INFO L125 PetriNetUnfolderBase]: For 136270/136270 co-relation queries the response was YES. [2024-06-14 12:41:45,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6398 conditions, 1049 events. 554/1049 cut-off events. For 136270/136270 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5529 event pairs, 89 based on Foata normal form. 8/1055 useless extension candidates. Maximal degree in co-relation 6282. Up to 566 conditions per place. [2024-06-14 12:41:45,799 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 83 changer transitions 13/226 dead transitions. [2024-06-14 12:41:45,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 226 transitions, 2340 flow [2024-06-14 12:41:45,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:45,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:45,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:41:45,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-14 12:41:45,800 INFO L175 Difference]: Start difference. First operand has 251 places, 194 transitions, 1618 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:41:45,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 226 transitions, 2340 flow [2024-06-14 12:41:46,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 226 transitions, 2225 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:46,038 INFO L231 Difference]: Finished difference. Result has 248 places, 191 transitions, 1656 flow [2024-06-14 12:41:46,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1656, PETRI_PLACES=248, PETRI_TRANSITIONS=191} [2024-06-14 12:41:46,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-14 12:41:46,038 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 191 transitions, 1656 flow [2024-06-14 12:41:46,038 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) [2024-06-14 12:41:46,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:46,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:46,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:41:46,038 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)] === [2024-06-14 12:41:46,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:46,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1932830623, now seen corresponding path program 4 times [2024-06-14 12:41:46,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:46,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890313986] [2024-06-14 12:41:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:46,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:46,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:46,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:46,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890313986] [2024-06-14 12:41:46,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890313986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:46,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:46,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221411650] [2024-06-14 12:41:46,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:46,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:46,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:46,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:46,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:47,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:47,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 191 transitions, 1656 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) [2024-06-14 12:41:47,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:47,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:47,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:47,387 INFO L124 PetriNetUnfolderBase]: 544/1031 cut-off events. [2024-06-14 12:41:47,387 INFO L125 PetriNetUnfolderBase]: For 130302/130302 co-relation queries the response was YES. [2024-06-14 12:41:47,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 1031 events. 544/1031 cut-off events. For 130302/130302 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5410 event pairs, 77 based on Foata normal form. 8/1037 useless extension candidates. Maximal degree in co-relation 6217. Up to 566 conditions per place. [2024-06-14 12:41:47,397 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 127 selfloop transitions, 83 changer transitions 10/222 dead transitions. [2024-06-14 12:41:47,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 222 transitions, 2364 flow [2024-06-14 12:41:47,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:41:47,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:41:47,397 INFO L175 Difference]: Start difference. First operand has 248 places, 191 transitions, 1656 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:41:47,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 222 transitions, 2364 flow [2024-06-14 12:41:47,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 222 transitions, 2178 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:47,649 INFO L231 Difference]: Finished difference. Result has 245 places, 189 transitions, 1627 flow [2024-06-14 12:41:47,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1627, PETRI_PLACES=245, PETRI_TRANSITIONS=189} [2024-06-14 12:41:47,650 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 12:41:47,650 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 189 transitions, 1627 flow [2024-06-14 12:41:47,650 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) [2024-06-14 12:41:47,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:47,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:47,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:41:47,651 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)] === [2024-06-14 12:41:47,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:47,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1932825043, now seen corresponding path program 5 times [2024-06-14 12:41:47,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:47,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913126000] [2024-06-14 12:41:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:47,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:48,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:48,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:48,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913126000] [2024-06-14 12:41:48,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913126000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:48,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:48,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150240079] [2024-06-14 12:41:48,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:48,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:48,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:48,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:48,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:48,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:48,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 189 transitions, 1627 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:48,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:48,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:48,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:48,874 INFO L124 PetriNetUnfolderBase]: 513/970 cut-off events. [2024-06-14 12:41:48,874 INFO L125 PetriNetUnfolderBase]: For 99248/99248 co-relation queries the response was YES. [2024-06-14 12:41:48,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5272 conditions, 970 events. 513/970 cut-off events. For 99248/99248 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5014 event pairs, 68 based on Foata normal form. 10/978 useless extension candidates. Maximal degree in co-relation 5159. Up to 566 conditions per place. [2024-06-14 12:41:48,881 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 78 changer transitions 23/215 dead transitions. [2024-06-14 12:41:48,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 215 transitions, 2129 flow [2024-06-14 12:41:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:41:48,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:41:48,882 INFO L175 Difference]: Start difference. First operand has 245 places, 189 transitions, 1627 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:41:48,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 215 transitions, 2129 flow [2024-06-14 12:41:49,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 215 transitions, 1961 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:49,069 INFO L231 Difference]: Finished difference. Result has 244 places, 183 transitions, 1573 flow [2024-06-14 12:41:49,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1573, PETRI_PLACES=244, PETRI_TRANSITIONS=183} [2024-06-14 12:41:49,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 12:41:49,069 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 183 transitions, 1573 flow [2024-06-14 12:41:49,070 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) [2024-06-14 12:41:49,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:49,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:49,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:41:49,070 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)] === [2024-06-14 12:41:49,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:49,070 INFO L85 PathProgramCache]: Analyzing trace with hash -82483727, now seen corresponding path program 6 times [2024-06-14 12:41:49,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:49,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061898608] [2024-06-14 12:41:49,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:49,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:49,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:49,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061898608] [2024-06-14 12:41:49,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061898608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:49,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:49,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:49,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575259978] [2024-06-14 12:41:49,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:49,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:49,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:50,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:50,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 183 transitions, 1573 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) [2024-06-14 12:41:50,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:50,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:50,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:50,345 INFO L124 PetriNetUnfolderBase]: 508/959 cut-off events. [2024-06-14 12:41:50,346 INFO L125 PetriNetUnfolderBase]: For 96905/96905 co-relation queries the response was YES. [2024-06-14 12:41:50,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5197 conditions, 959 events. 508/959 cut-off events. For 96905/96905 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4938 event pairs, 72 based on Foata normal form. 10/967 useless extension candidates. Maximal degree in co-relation 5085. Up to 720 conditions per place. [2024-06-14 12:41:50,352 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 43 changer transitions 14/208 dead transitions. [2024-06-14 12:41:50,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 208 transitions, 2071 flow [2024-06-14 12:41:50,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:50,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:41:50,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:41:50,353 INFO L175 Difference]: Start difference. First operand has 244 places, 183 transitions, 1573 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:41:50,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 208 transitions, 2071 flow [2024-06-14 12:41:50,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 208 transitions, 1842 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:50,526 INFO L231 Difference]: Finished difference. Result has 235 places, 182 transitions, 1434 flow [2024-06-14 12:41:50,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1434, PETRI_PLACES=235, PETRI_TRANSITIONS=182} [2024-06-14 12:41:50,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-14 12:41:50,526 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 182 transitions, 1434 flow [2024-06-14 12:41:50,526 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) [2024-06-14 12:41:50,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:50,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:50,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:41:50,526 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)] === [2024-06-14 12:41:50,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:50,527 INFO L85 PathProgramCache]: Analyzing trace with hash -82489307, now seen corresponding path program 7 times [2024-06-14 12:41:50,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:50,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727458798] [2024-06-14 12:41:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:50,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:51,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:51,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727458798] [2024-06-14 12:41:51,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727458798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:51,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:51,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243058685] [2024-06-14 12:41:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:51,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:51,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:51,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:51,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:51,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:51,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 182 transitions, 1434 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) [2024-06-14 12:41:51,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:51,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:51,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:51,813 INFO L124 PetriNetUnfolderBase]: 496/939 cut-off events. [2024-06-14 12:41:51,813 INFO L125 PetriNetUnfolderBase]: For 85428/85428 co-relation queries the response was YES. [2024-06-14 12:41:51,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4944 conditions, 939 events. 496/939 cut-off events. For 85428/85428 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4833 event pairs, 68 based on Foata normal form. 8/945 useless extension candidates. Maximal degree in co-relation 4833. Up to 710 conditions per place. [2024-06-14 12:41:51,819 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 41 changer transitions 14/204 dead transitions. [2024-06-14 12:41:51,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 204 transitions, 1898 flow [2024-06-14 12:41:51,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:41:51,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:41:51,820 INFO L175 Difference]: Start difference. First operand has 235 places, 182 transitions, 1434 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:41:51,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 204 transitions, 1898 flow [2024-06-14 12:41:51,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 204 transitions, 1806 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:51,948 INFO L231 Difference]: Finished difference. Result has 234 places, 179 transitions, 1399 flow [2024-06-14 12:41:51,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1399, PETRI_PLACES=234, PETRI_TRANSITIONS=179} [2024-06-14 12:41:51,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-14 12:41:51,949 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 179 transitions, 1399 flow [2024-06-14 12:41:51,949 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) [2024-06-14 12:41:51,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:51,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:51,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:41:51,949 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)] === [2024-06-14 12:41:51,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:51,950 INFO L85 PathProgramCache]: Analyzing trace with hash -87995837, now seen corresponding path program 8 times [2024-06-14 12:41:51,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:51,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057191720] [2024-06-14 12:41:51,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:51,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:52,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:52,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057191720] [2024-06-14 12:41:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057191720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:52,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954064553] [2024-06-14 12:41:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:52,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:52,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:52,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:52,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 179 transitions, 1399 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) [2024-06-14 12:41:52,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:52,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:52,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:53,281 INFO L124 PetriNetUnfolderBase]: 528/1003 cut-off events. [2024-06-14 12:41:53,281 INFO L125 PetriNetUnfolderBase]: For 117976/117976 co-relation queries the response was YES. [2024-06-14 12:41:53,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5919 conditions, 1003 events. 528/1003 cut-off events. For 117976/117976 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5242 event pairs, 81 based on Foata normal form. 8/1009 useless extension candidates. Maximal degree in co-relation 5809. Up to 682 conditions per place. [2024-06-14 12:41:53,289 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 43 changer transitions 13/211 dead transitions. [2024-06-14 12:41:53,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 211 transitions, 2087 flow [2024-06-14 12:41:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:41:53,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:41:53,290 INFO L175 Difference]: Start difference. First operand has 234 places, 179 transitions, 1399 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:41:53,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 211 transitions, 2087 flow [2024-06-14 12:41:53,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 211 transitions, 1993 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:53,488 INFO L231 Difference]: Finished difference. Result has 233 places, 179 transitions, 1398 flow [2024-06-14 12:41:53,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1398, PETRI_PLACES=233, PETRI_TRANSITIONS=179} [2024-06-14 12:41:53,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-14 12:41:53,489 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 179 transitions, 1398 flow [2024-06-14 12:41:53,489 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) [2024-06-14 12:41:53,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:53,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:53,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:41:53,489 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)] === [2024-06-14 12:41:53,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:53,489 INFO L85 PathProgramCache]: Analyzing trace with hash -87846107, now seen corresponding path program 9 times [2024-06-14 12:41:53,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:53,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716899655] [2024-06-14 12:41:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:53,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:54,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:54,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716899655] [2024-06-14 12:41:54,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716899655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:54,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:54,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:54,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134514236] [2024-06-14 12:41:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:54,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:54,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:54,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:54,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:54,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 179 transitions, 1398 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) [2024-06-14 12:41:54,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:54,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:54,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:54,864 INFO L124 PetriNetUnfolderBase]: 515/980 cut-off events. [2024-06-14 12:41:54,864 INFO L125 PetriNetUnfolderBase]: For 117961/117961 co-relation queries the response was YES. [2024-06-14 12:41:54,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5687 conditions, 980 events. 515/980 cut-off events. For 117961/117961 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5101 event pairs, 90 based on Foata normal form. 10/988 useless extension candidates. Maximal degree in co-relation 5577. Up to 738 conditions per place. [2024-06-14 12:41:54,871 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 42 changer transitions 14/202 dead transitions. [2024-06-14 12:41:54,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 202 transitions, 1866 flow [2024-06-14 12:41:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:41:54,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:41:54,874 INFO L175 Difference]: Start difference. First operand has 233 places, 179 transitions, 1398 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:41:54,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 202 transitions, 1866 flow [2024-06-14 12:41:55,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 202 transitions, 1781 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:55,052 INFO L231 Difference]: Finished difference. Result has 232 places, 176 transitions, 1373 flow [2024-06-14 12:41:55,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1373, PETRI_PLACES=232, PETRI_TRANSITIONS=176} [2024-06-14 12:41:55,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-14 12:41:55,053 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 176 transitions, 1373 flow [2024-06-14 12:41:55,053 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) [2024-06-14 12:41:55,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:55,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:55,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:41:55,053 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)] === [2024-06-14 12:41:55,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -87851687, now seen corresponding path program 10 times [2024-06-14 12:41:55,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:55,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849687734] [2024-06-14 12:41:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:55,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:55,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:55,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849687734] [2024-06-14 12:41:55,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849687734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:55,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:55,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:55,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880326246] [2024-06-14 12:41:55,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:55,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:55,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:55,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:55,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:55,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:55,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 176 transitions, 1373 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) [2024-06-14 12:41:55,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:55,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:55,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:56,299 INFO L124 PetriNetUnfolderBase]: 481/914 cut-off events. [2024-06-14 12:41:56,299 INFO L125 PetriNetUnfolderBase]: For 85386/85386 co-relation queries the response was YES. [2024-06-14 12:41:56,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 914 events. 481/914 cut-off events. For 85386/85386 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4685 event pairs, 68 based on Foata normal form. 8/920 useless extension candidates. Maximal degree in co-relation 4711. Up to 682 conditions per place. [2024-06-14 12:41:56,305 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 141 selfloop transitions, 39 changer transitions 16/198 dead transitions. [2024-06-14 12:41:56,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 198 transitions, 1825 flow [2024-06-14 12:41:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:41:56,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:41:56,306 INFO L175 Difference]: Start difference. First operand has 232 places, 176 transitions, 1373 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:41:56,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 198 transitions, 1825 flow [2024-06-14 12:41:56,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 198 transitions, 1731 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:56,471 INFO L231 Difference]: Finished difference. Result has 230 places, 172 transitions, 1322 flow [2024-06-14 12:41:56,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1322, PETRI_PLACES=230, PETRI_TRANSITIONS=172} [2024-06-14 12:41:56,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-14 12:41:56,472 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 172 transitions, 1322 flow [2024-06-14 12:41:56,472 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) [2024-06-14 12:41:56,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:56,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:56,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:41:56,472 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)] === [2024-06-14 12:41:56,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1171099811, now seen corresponding path program 11 times [2024-06-14 12:41:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601519758] [2024-06-14 12:41:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:56,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:57,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:57,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601519758] [2024-06-14 12:41:57,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601519758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:57,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:57,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:57,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354047996] [2024-06-14 12:41:57,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:57,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:57,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:57,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:57,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:57,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 172 transitions, 1322 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) [2024-06-14 12:41:57,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:57,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:57,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:57,809 INFO L124 PetriNetUnfolderBase]: 502/957 cut-off events. [2024-06-14 12:41:57,809 INFO L125 PetriNetUnfolderBase]: For 117932/117932 co-relation queries the response was YES. [2024-06-14 12:41:57,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5714 conditions, 957 events. 502/957 cut-off events. For 117932/117932 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4917 event pairs, 83 based on Foata normal form. 8/963 useless extension candidates. Maximal degree in co-relation 5607. Up to 607 conditions per place. [2024-06-14 12:41:57,816 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 42 changer transitions 16/202 dead transitions. [2024-06-14 12:41:57,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 202 transitions, 1978 flow [2024-06-14 12:41:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:41:57,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-14 12:41:57,817 INFO L175 Difference]: Start difference. First operand has 230 places, 172 transitions, 1322 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:41:57,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 202 transitions, 1978 flow [2024-06-14 12:41:57,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 202 transitions, 1886 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:57,979 INFO L231 Difference]: Finished difference. Result has 223 places, 168 transitions, 1296 flow [2024-06-14 12:41:57,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1296, PETRI_PLACES=223, PETRI_TRANSITIONS=168} [2024-06-14 12:41:57,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-14 12:41:57,979 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 168 transitions, 1296 flow [2024-06-14 12:41:57,979 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) [2024-06-14 12:41:57,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:57,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:57,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:41:57,979 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)] === [2024-06-14 12:41:57,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1167524891, now seen corresponding path program 12 times [2024-06-14 12:41:57,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:57,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129215619] [2024-06-14 12:41:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:57,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:58,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:58,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129215619] [2024-06-14 12:41:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129215619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:58,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:58,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421568486] [2024-06-14 12:41:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:58,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:58,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:58,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:41:58,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 168 transitions, 1296 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) [2024-06-14 12:41:58,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:58,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:41:58,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:59,362 INFO L124 PetriNetUnfolderBase]: 488/931 cut-off events. [2024-06-14 12:41:59,362 INFO L125 PetriNetUnfolderBase]: For 117892/117892 co-relation queries the response was YES. [2024-06-14 12:41:59,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5629 conditions, 931 events. 488/931 cut-off events. For 117892/117892 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4733 event pairs, 81 based on Foata normal form. 8/937 useless extension candidates. Maximal degree in co-relation 5525. Up to 607 conditions per place. [2024-06-14 12:41:59,370 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 42 changer transitions 13/197 dead transitions. [2024-06-14 12:41:59,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 197 transitions, 1940 flow [2024-06-14 12:41:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:59,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:41:59,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 12:41:59,371 INFO L175 Difference]: Start difference. First operand has 223 places, 168 transitions, 1296 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:41:59,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 197 transitions, 1940 flow [2024-06-14 12:41:59,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 197 transitions, 1844 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:59,520 INFO L231 Difference]: Finished difference. Result has 218 places, 165 transitions, 1276 flow [2024-06-14 12:41:59,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1276, PETRI_PLACES=218, PETRI_TRANSITIONS=165} [2024-06-14 12:41:59,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-14 12:41:59,521 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 165 transitions, 1276 flow [2024-06-14 12:41:59,521 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) [2024-06-14 12:41:59,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:59,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:59,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:41:59,521 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)] === [2024-06-14 12:41:59,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:59,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1167380741, now seen corresponding path program 13 times [2024-06-14 12:41:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:59,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219152613] [2024-06-14 12:41:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:59,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:00,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219152613] [2024-06-14 12:42:00,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219152613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:00,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:00,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:00,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192804560] [2024-06-14 12:42:00,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:00,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:00,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:00,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:00,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:00,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:00,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 165 transitions, 1276 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) [2024-06-14 12:42:00,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:00,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:00,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:00,852 INFO L124 PetriNetUnfolderBase]: 478/913 cut-off events. [2024-06-14 12:42:00,853 INFO L125 PetriNetUnfolderBase]: For 109379/109379 co-relation queries the response was YES. [2024-06-14 12:42:00,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5494 conditions, 913 events. 478/913 cut-off events. For 109379/109379 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4617 event pairs, 75 based on Foata normal form. 8/919 useless extension candidates. Maximal degree in co-relation 5393. Up to 607 conditions per place. [2024-06-14 12:42:00,859 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 42 changer transitions 10/193 dead transitions. [2024-06-14 12:42:00,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 193 transitions, 1904 flow [2024-06-14 12:42:00,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:00,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:42:00,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 12:42:00,860 INFO L175 Difference]: Start difference. First operand has 218 places, 165 transitions, 1276 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:42:00,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 193 transitions, 1904 flow [2024-06-14 12:42:00,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 193 transitions, 1811 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:00,990 INFO L231 Difference]: Finished difference. Result has 215 places, 163 transitions, 1261 flow [2024-06-14 12:42:00,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1261, PETRI_PLACES=215, PETRI_TRANSITIONS=163} [2024-06-14 12:42:00,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-14 12:42:00,990 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 163 transitions, 1261 flow [2024-06-14 12:42:00,991 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) [2024-06-14 12:42:00,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:00,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:00,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:42:00,991 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)] === [2024-06-14 12:42:00,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:00,991 INFO L85 PathProgramCache]: Analyzing trace with hash -226374257, now seen corresponding path program 14 times [2024-06-14 12:42:00,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:00,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453832824] [2024-06-14 12:42:00,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:00,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:01,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:01,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453832824] [2024-06-14 12:42:01,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453832824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:01,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:01,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:01,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016709787] [2024-06-14 12:42:01,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:01,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:01,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:01,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:01,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:01,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:01,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 163 transitions, 1261 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) [2024-06-14 12:42:01,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:01,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:01,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:02,170 INFO L124 PetriNetUnfolderBase]: 447/852 cut-off events. [2024-06-14 12:42:02,170 INFO L125 PetriNetUnfolderBase]: For 80966/80966 co-relation queries the response was YES. [2024-06-14 12:42:02,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4504 conditions, 852 events. 447/852 cut-off events. For 80966/80966 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4226 event pairs, 66 based on Foata normal form. 10/860 useless extension candidates. Maximal degree in co-relation 4405. Up to 607 conditions per place. [2024-06-14 12:42:02,176 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 36 changer transitions 22/186 dead transitions. [2024-06-14 12:42:02,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 186 transitions, 1697 flow [2024-06-14 12:42:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:02,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:42:02,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:42:02,177 INFO L175 Difference]: Start difference. First operand has 215 places, 163 transitions, 1261 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:42:02,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 186 transitions, 1697 flow [2024-06-14 12:42:02,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 186 transitions, 1564 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:02,284 INFO L231 Difference]: Finished difference. Result has 214 places, 155 transitions, 1150 flow [2024-06-14 12:42:02,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1150, PETRI_PLACES=214, PETRI_TRANSITIONS=155} [2024-06-14 12:42:02,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-14 12:42:02,285 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 155 transitions, 1150 flow [2024-06-14 12:42:02,285 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) [2024-06-14 12:42:02,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:02,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:02,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:42:02,285 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)] === [2024-06-14 12:42:02,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:02,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1789276155, now seen corresponding path program 15 times [2024-06-14 12:42:02,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:02,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328773617] [2024-06-14 12:42:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:02,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:03,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:03,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328773617] [2024-06-14 12:42:03,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328773617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:03,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:03,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:03,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87112263] [2024-06-14 12:42:03,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:03,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:03,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:03,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:03,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:03,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:03,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 155 transitions, 1150 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) [2024-06-14 12:42:03,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:03,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:03,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:03,600 INFO L124 PetriNetUnfolderBase]: 397/742 cut-off events. [2024-06-14 12:42:03,600 INFO L125 PetriNetUnfolderBase]: For 75096/75096 co-relation queries the response was YES. [2024-06-14 12:42:03,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4057 conditions, 742 events. 397/742 cut-off events. For 75096/75096 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3537 event pairs, 44 based on Foata normal form. 8/748 useless extension candidates. Maximal degree in co-relation 3958. Up to 285 conditions per place. [2024-06-14 12:42:03,605 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 79 changer transitions 13/180 dead transitions. [2024-06-14 12:42:03,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 180 transitions, 1728 flow [2024-06-14 12:42:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:03,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:42:03,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:42:03,606 INFO L175 Difference]: Start difference. First operand has 214 places, 155 transitions, 1150 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:42:03,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 180 transitions, 1728 flow [2024-06-14 12:42:03,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 180 transitions, 1603 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:03,692 INFO L231 Difference]: Finished difference. Result has 201 places, 151 transitions, 1176 flow [2024-06-14 12:42:03,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1176, PETRI_PLACES=201, PETRI_TRANSITIONS=151} [2024-06-14 12:42:03,692 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-14 12:42:03,692 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 151 transitions, 1176 flow [2024-06-14 12:42:03,692 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) [2024-06-14 12:42:03,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:03,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:03,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:42:03,693 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)] === [2024-06-14 12:42:03,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:03,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1499796077, now seen corresponding path program 16 times [2024-06-14 12:42:03,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:03,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099705491] [2024-06-14 12:42:03,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:03,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:04,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099705491] [2024-06-14 12:42:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099705491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:04,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:04,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950327006] [2024-06-14 12:42:04,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:04,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:04,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:04,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:04,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:04,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:04,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 151 transitions, 1176 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) [2024-06-14 12:42:04,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:04,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:04,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:05,141 INFO L124 PetriNetUnfolderBase]: 387/724 cut-off events. [2024-06-14 12:42:05,142 INFO L125 PetriNetUnfolderBase]: For 72667/72667 co-relation queries the response was YES. [2024-06-14 12:42:05,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 724 events. 387/724 cut-off events. For 72667/72667 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3451 event pairs, 60 based on Foata normal form. 10/732 useless extension candidates. Maximal degree in co-relation 3933. Up to 531 conditions per place. [2024-06-14 12:42:05,146 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 38 changer transitions 11/171 dead transitions. [2024-06-14 12:42:05,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 171 transitions, 1574 flow [2024-06-14 12:42:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:42:05,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:42:05,147 INFO L175 Difference]: Start difference. First operand has 201 places, 151 transitions, 1176 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:42:05,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 171 transitions, 1574 flow [2024-06-14 12:42:05,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 171 transitions, 1443 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:05,229 INFO L231 Difference]: Finished difference. Result has 196 places, 148 transitions, 1103 flow [2024-06-14 12:42:05,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1103, PETRI_PLACES=196, PETRI_TRANSITIONS=148} [2024-06-14 12:42:05,230 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-14 12:42:05,230 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 148 transitions, 1103 flow [2024-06-14 12:42:05,230 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) [2024-06-14 12:42:05,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:05,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:05,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:42:05,230 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)] === [2024-06-14 12:42:05,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:05,230 INFO L85 PathProgramCache]: Analyzing trace with hash -558800753, now seen corresponding path program 17 times [2024-06-14 12:42:05,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:05,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014079097] [2024-06-14 12:42:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:05,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:06,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:06,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014079097] [2024-06-14 12:42:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014079097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:06,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:06,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187153581] [2024-06-14 12:42:06,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:06,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:06,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:06,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:06,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:06,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:06,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 148 transitions, 1103 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) [2024-06-14 12:42:06,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:06,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:06,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:06,459 INFO L124 PetriNetUnfolderBase]: 379/712 cut-off events. [2024-06-14 12:42:06,459 INFO L125 PetriNetUnfolderBase]: For 61865/61865 co-relation queries the response was YES. [2024-06-14 12:42:06,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3889 conditions, 712 events. 379/712 cut-off events. For 61865/61865 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3382 event pairs, 46 based on Foata normal form. 8/718 useless extension candidates. Maximal degree in co-relation 3797. Up to 507 conditions per place. [2024-06-14 12:42:06,464 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 115 selfloop transitions, 39 changer transitions 13/169 dead transitions. [2024-06-14 12:42:06,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 169 transitions, 1494 flow [2024-06-14 12:42:06,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:42:06,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:42:06,465 INFO L175 Difference]: Start difference. First operand has 196 places, 148 transitions, 1103 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:42:06,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 169 transitions, 1494 flow [2024-06-14 12:42:06,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 169 transitions, 1414 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:06,539 INFO L231 Difference]: Finished difference. Result has 195 places, 145 transitions, 1082 flow [2024-06-14 12:42:06,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1082, PETRI_PLACES=195, PETRI_TRANSITIONS=145} [2024-06-14 12:42:06,540 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-14 12:42:06,540 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 145 transitions, 1082 flow [2024-06-14 12:42:06,540 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) [2024-06-14 12:42:06,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:06,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:42:06,541 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)] === [2024-06-14 12:42:06,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:06,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1305646921, now seen corresponding path program 1 times [2024-06-14 12:42:06,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:06,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055611391] [2024-06-14 12:42:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:06,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:07,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:07,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055611391] [2024-06-14 12:42:07,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055611391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:07,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:07,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:07,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539905070] [2024-06-14 12:42:07,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:07,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:07,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:07,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:07,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 145 transitions, 1082 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) [2024-06-14 12:42:07,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:07,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:07,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:07,725 INFO L124 PetriNetUnfolderBase]: 369/686 cut-off events. [2024-06-14 12:42:07,725 INFO L125 PetriNetUnfolderBase]: For 46525/46525 co-relation queries the response was YES. [2024-06-14 12:42:07,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3815 conditions, 686 events. 369/686 cut-off events. For 46525/46525 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3210 event pairs, 52 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 3723. Up to 537 conditions per place. [2024-06-14 12:42:07,729 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 40 changer transitions 0/163 dead transitions. [2024-06-14 12:42:07,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 163 transitions, 1461 flow [2024-06-14 12:42:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:42:07,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 12:42:07,730 INFO L175 Difference]: Start difference. First operand has 195 places, 145 transitions, 1082 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:42:07,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 163 transitions, 1461 flow [2024-06-14 12:42:07,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 163 transitions, 1373 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:07,799 INFO L231 Difference]: Finished difference. Result has 190 places, 148 transitions, 1105 flow [2024-06-14 12:42:07,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1105, PETRI_PLACES=190, PETRI_TRANSITIONS=148} [2024-06-14 12:42:07,799 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-14 12:42:07,799 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 148 transitions, 1105 flow [2024-06-14 12:42:07,799 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) [2024-06-14 12:42:07,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:07,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:07,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:42:07,799 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)] === [2024-06-14 12:42:07,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1505308187, now seen corresponding path program 18 times [2024-06-14 12:42:07,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:07,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915738779] [2024-06-14 12:42:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:07,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:08,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:08,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915738779] [2024-06-14 12:42:08,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915738779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:08,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:08,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:08,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818003978] [2024-06-14 12:42:08,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:08,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:08,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:08,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:08,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:08,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:08,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 148 transitions, 1105 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) [2024-06-14 12:42:08,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:08,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:08,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:09,155 INFO L124 PetriNetUnfolderBase]: 432/819 cut-off events. [2024-06-14 12:42:09,155 INFO L125 PetriNetUnfolderBase]: For 98226/98226 co-relation queries the response was YES. [2024-06-14 12:42:09,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5383 conditions, 819 events. 432/819 cut-off events. For 98226/98226 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4061 event pairs, 89 based on Foata normal form. 8/825 useless extension candidates. Maximal degree in co-relation 5293. Up to 442 conditions per place. [2024-06-14 12:42:09,160 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 45 changer transitions 10/175 dead transitions. [2024-06-14 12:42:09,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 175 transitions, 1677 flow [2024-06-14 12:42:09,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:09,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:42:09,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:42:09,161 INFO L175 Difference]: Start difference. First operand has 190 places, 148 transitions, 1105 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:42:09,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 175 transitions, 1677 flow [2024-06-14 12:42:09,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 175 transitions, 1595 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:42:09,281 INFO L231 Difference]: Finished difference. Result has 194 places, 145 transitions, 1098 flow [2024-06-14 12:42:09,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1098, PETRI_PLACES=194, PETRI_TRANSITIONS=145} [2024-06-14 12:42:09,281 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-14 12:42:09,281 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 145 transitions, 1098 flow [2024-06-14 12:42:09,282 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) [2024-06-14 12:42:09,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:09,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:09,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:42:09,282 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:42:09,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:09,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1505164037, now seen corresponding path program 19 times [2024-06-14 12:42:09,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:09,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912888761] [2024-06-14 12:42:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:10,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:10,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912888761] [2024-06-14 12:42:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912888761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:10,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:10,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:10,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682572927] [2024-06-14 12:42:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:10,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:10,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:10,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 145 transitions, 1098 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) [2024-06-14 12:42:10,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:10,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:10,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:10,711 INFO L124 PetriNetUnfolderBase]: 451/860 cut-off events. [2024-06-14 12:42:10,711 INFO L125 PetriNetUnfolderBase]: For 124278/124278 co-relation queries the response was YES. [2024-06-14 12:42:10,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6222 conditions, 860 events. 451/860 cut-off events. For 124278/124278 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4342 event pairs, 102 based on Foata normal form. 8/866 useless extension candidates. Maximal degree in co-relation 6131. Up to 581 conditions per place. [2024-06-14 12:42:10,717 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 45 changer transitions 7/171 dead transitions. [2024-06-14 12:42:10,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 171 transitions, 1656 flow [2024-06-14 12:42:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:42:10,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 12:42:10,717 INFO L175 Difference]: Start difference. First operand has 194 places, 145 transitions, 1098 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:42:10,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 171 transitions, 1656 flow [2024-06-14 12:42:10,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 171 transitions, 1564 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:10,834 INFO L231 Difference]: Finished difference. Result has 191 places, 143 transitions, 1091 flow [2024-06-14 12:42:10,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1091, PETRI_PLACES=191, PETRI_TRANSITIONS=143} [2024-06-14 12:42:10,834 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-06-14 12:42:10,835 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 143 transitions, 1091 flow [2024-06-14 12:42:10,835 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) [2024-06-14 12:42:10,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:10,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:10,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:42:10,835 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)] === [2024-06-14 12:42:10,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:10,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1305862247, now seen corresponding path program 20 times [2024-06-14 12:42:10,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:10,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601775445] [2024-06-14 12:42:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:10,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:11,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:11,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:11,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601775445] [2024-06-14 12:42:11,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601775445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:11,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:11,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:11,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424033866] [2024-06-14 12:42:11,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:11,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:11,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:11,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:11,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:11,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:11,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 143 transitions, 1091 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) [2024-06-14 12:42:11,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:11,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:11,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:12,258 INFO L124 PetriNetUnfolderBase]: 445/850 cut-off events. [2024-06-14 12:42:12,258 INFO L125 PetriNetUnfolderBase]: For 117099/117099 co-relation queries the response was YES. [2024-06-14 12:42:12,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6118 conditions, 850 events. 445/850 cut-off events. For 117099/117099 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4276 event pairs, 102 based on Foata normal form. 8/856 useless extension candidates. Maximal degree in co-relation 6029. Up to 519 conditions per place. [2024-06-14 12:42:12,264 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 42 changer transitions 7/169 dead transitions. [2024-06-14 12:42:12,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 169 transitions, 1647 flow [2024-06-14 12:42:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:12,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 12:42:12,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 12:42:12,265 INFO L175 Difference]: Start difference. First operand has 191 places, 143 transitions, 1091 flow. Second operand 11 states and 139 transitions. [2024-06-14 12:42:12,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 169 transitions, 1647 flow [2024-06-14 12:42:12,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 169 transitions, 1551 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:12,366 INFO L231 Difference]: Finished difference. Result has 190 places, 141 transitions, 1070 flow [2024-06-14 12:42:12,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1070, PETRI_PLACES=190, PETRI_TRANSITIONS=141} [2024-06-14 12:42:12,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-14 12:42:12,366 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 141 transitions, 1070 flow [2024-06-14 12:42:12,367 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) [2024-06-14 12:42:12,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:12,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:12,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:42:12,367 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)] === [2024-06-14 12:42:12,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:12,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1505158457, now seen corresponding path program 21 times [2024-06-14 12:42:12,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:12,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154757027] [2024-06-14 12:42:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:12,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:13,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:13,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154757027] [2024-06-14 12:42:13,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154757027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:13,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:13,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:13,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780251808] [2024-06-14 12:42:13,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:13,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:13,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:13,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:13,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:13,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 141 transitions, 1070 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) [2024-06-14 12:42:13,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:13,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:13,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:13,681 INFO L124 PetriNetUnfolderBase]: 414/789 cut-off events. [2024-06-14 12:42:13,681 INFO L125 PetriNetUnfolderBase]: For 96825/96825 co-relation queries the response was YES. [2024-06-14 12:42:13,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5237 conditions, 789 events. 414/789 cut-off events. For 96825/96825 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3866 event pairs, 83 based on Foata normal form. 10/797 useless extension candidates. Maximal degree in co-relation 5149. Up to 549 conditions per place. [2024-06-14 12:42:13,687 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 103 selfloop transitions, 42 changer transitions 16/163 dead transitions. [2024-06-14 12:42:13,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 163 transitions, 1456 flow [2024-06-14 12:42:13,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:42:13,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 12:42:13,688 INFO L175 Difference]: Start difference. First operand has 190 places, 141 transitions, 1070 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:42:13,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 163 transitions, 1456 flow [2024-06-14 12:42:13,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 163 transitions, 1374 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:13,797 INFO L231 Difference]: Finished difference. Result has 189 places, 134 transitions, 1025 flow [2024-06-14 12:42:13,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1025, PETRI_PLACES=189, PETRI_TRANSITIONS=134} [2024-06-14 12:42:13,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-14 12:42:13,797 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 134 transitions, 1025 flow [2024-06-14 12:42:13,798 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) [2024-06-14 12:42:13,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:13,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:13,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:42:13,798 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)] === [2024-06-14 12:42:13,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1931523375, now seen corresponding path program 22 times [2024-06-14 12:42:13,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:13,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487250739] [2024-06-14 12:42:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:13,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:14,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:14,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487250739] [2024-06-14 12:42:14,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487250739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:14,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:14,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:14,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54045987] [2024-06-14 12:42:14,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:14,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:14,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:14,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:14,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:14,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:14,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 134 transitions, 1025 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) [2024-06-14 12:42:14,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:14,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:14,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:15,256 INFO L124 PetriNetUnfolderBase]: 432/827 cut-off events. [2024-06-14 12:42:15,256 INFO L125 PetriNetUnfolderBase]: For 110146/110146 co-relation queries the response was YES. [2024-06-14 12:42:15,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 827 events. 432/827 cut-off events. For 110146/110146 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4143 event pairs, 100 based on Foata normal form. 8/833 useless extension candidates. Maximal degree in co-relation 5855. Up to 572 conditions per place. [2024-06-14 12:42:15,262 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 109 selfloop transitions, 43 changer transitions 7/161 dead transitions. [2024-06-14 12:42:15,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 161 transitions, 1567 flow [2024-06-14 12:42:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:15,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:42:15,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 12:42:15,262 INFO L175 Difference]: Start difference. First operand has 189 places, 134 transitions, 1025 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:42:15,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 161 transitions, 1567 flow [2024-06-14 12:42:15,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 161 transitions, 1463 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:15,349 INFO L231 Difference]: Finished difference. Result has 182 places, 134 transitions, 1026 flow [2024-06-14 12:42:15,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1026, PETRI_PLACES=182, PETRI_TRANSITIONS=134} [2024-06-14 12:42:15,350 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-14 12:42:15,350 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 134 transitions, 1026 flow [2024-06-14 12:42:15,350 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) [2024-06-14 12:42:15,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:15,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:15,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:42:15,350 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)] === [2024-06-14 12:42:15,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:15,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1793000805, now seen corresponding path program 23 times [2024-06-14 12:42:15,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:15,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748383553] [2024-06-14 12:42:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:15,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:16,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748383553] [2024-06-14 12:42:16,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748383553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:16,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:16,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110487727] [2024-06-14 12:42:16,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:16,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:16,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:16,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:16,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 134 transitions, 1026 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) [2024-06-14 12:42:16,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:16,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:16,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:16,512 INFO L124 PetriNetUnfolderBase]: 430/825 cut-off events. [2024-06-14 12:42:16,512 INFO L125 PetriNetUnfolderBase]: For 100387/100387 co-relation queries the response was YES. [2024-06-14 12:42:16,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 825 events. 430/825 cut-off events. For 100387/100387 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4134 event pairs, 94 based on Foata normal form. 10/833 useless extension candidates. Maximal degree in co-relation 5673. Up to 514 conditions per place. [2024-06-14 12:42:16,518 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 72 selfloop transitions, 70 changer transitions 11/155 dead transitions. [2024-06-14 12:42:16,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 155 transitions, 1394 flow [2024-06-14 12:42:16,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:42:16,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:42:16,519 INFO L175 Difference]: Start difference. First operand has 182 places, 134 transitions, 1026 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:42:16,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 155 transitions, 1394 flow [2024-06-14 12:42:16,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 155 transitions, 1306 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:16,615 INFO L231 Difference]: Finished difference. Result has 181 places, 131 transitions, 1056 flow [2024-06-14 12:42:16,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1056, PETRI_PLACES=181, PETRI_TRANSITIONS=131} [2024-06-14 12:42:16,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-14 12:42:16,615 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 131 transitions, 1056 flow [2024-06-14 12:42:16,615 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) [2024-06-14 12:42:16,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:16,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:16,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:42:16,616 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)] === [2024-06-14 12:42:16,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:16,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1305856667, now seen corresponding path program 24 times [2024-06-14 12:42:16,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:16,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032541773] [2024-06-14 12:42:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:16,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:16,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:17,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:17,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032541773] [2024-06-14 12:42:17,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032541773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:17,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:17,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:17,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537823443] [2024-06-14 12:42:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:17,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:17,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:17,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:17,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 131 transitions, 1056 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) [2024-06-14 12:42:17,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:17,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:17,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:18,002 INFO L124 PetriNetUnfolderBase]: 422/813 cut-off events. [2024-06-14 12:42:18,002 INFO L125 PetriNetUnfolderBase]: For 100585/100585 co-relation queries the response was YES. [2024-06-14 12:42:18,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 813 events. 422/813 cut-off events. For 100585/100585 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4093 event pairs, 108 based on Foata normal form. 10/821 useless extension candidates. Maximal degree in co-relation 5695. Up to 606 conditions per place. [2024-06-14 12:42:18,007 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 40 changer transitions 10/154 dead transitions. [2024-06-14 12:42:18,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 154 transitions, 1426 flow [2024-06-14 12:42:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:18,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:42:18,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 12:42:18,008 INFO L175 Difference]: Start difference. First operand has 181 places, 131 transitions, 1056 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:42:18,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 154 transitions, 1426 flow [2024-06-14 12:42:18,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 154 transitions, 1275 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:18,101 INFO L231 Difference]: Finished difference. Result has 180 places, 127 transitions, 953 flow [2024-06-14 12:42:18,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=953, PETRI_PLACES=180, PETRI_TRANSITIONS=127} [2024-06-14 12:42:18,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-14 12:42:18,101 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 127 transitions, 953 flow [2024-06-14 12:42:18,101 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) [2024-06-14 12:42:18,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:18,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:18,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:42:18,102 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)] === [2024-06-14 12:42:18,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:18,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1305654857, now seen corresponding path program 25 times [2024-06-14 12:42:18,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:18,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161155495] [2024-06-14 12:42:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:18,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:19,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:19,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161155495] [2024-06-14 12:42:19,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161155495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:19,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:19,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:19,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64130463] [2024-06-14 12:42:19,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:19,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:19,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:19,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:19,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 127 transitions, 953 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) [2024-06-14 12:42:19,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:19,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:19,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:19,601 INFO L124 PetriNetUnfolderBase]: 427/828 cut-off events. [2024-06-14 12:42:19,601 INFO L125 PetriNetUnfolderBase]: For 110897/110897 co-relation queries the response was YES. [2024-06-14 12:42:19,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5726 conditions, 828 events. 427/828 cut-off events. For 110897/110897 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4210 event pairs, 120 based on Foata normal form. 16/842 useless extension candidates. Maximal degree in co-relation 5643. Up to 610 conditions per place. [2024-06-14 12:42:19,606 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 32 changer transitions 18/150 dead transitions. [2024-06-14 12:42:19,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 150 transitions, 1335 flow [2024-06-14 12:42:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:42:19,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:42:19,607 INFO L175 Difference]: Start difference. First operand has 180 places, 127 transitions, 953 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:42:19,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 150 transitions, 1335 flow [2024-06-14 12:42:19,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 150 transitions, 1241 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:42:19,711 INFO L231 Difference]: Finished difference. Result has 176 places, 121 transitions, 895 flow [2024-06-14 12:42:19,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=895, PETRI_PLACES=176, PETRI_TRANSITIONS=121} [2024-06-14 12:42:19,712 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-14 12:42:19,712 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 121 transitions, 895 flow [2024-06-14 12:42:19,712 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) [2024-06-14 12:42:19,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:19,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:19,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:42:19,712 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)] === [2024-06-14 12:42:19,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1026321625, now seen corresponding path program 2 times [2024-06-14 12:42:19,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:19,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429095744] [2024-06-14 12:42:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:19,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:20,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:20,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429095744] [2024-06-14 12:42:20,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429095744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:20,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:20,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4066374] [2024-06-14 12:42:20,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:20,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:20,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:20,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:20,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 121 transitions, 895 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) [2024-06-14 12:42:20,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:20,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:20,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:21,196 INFO L124 PetriNetUnfolderBase]: 379/732 cut-off events. [2024-06-14 12:42:21,196 INFO L125 PetriNetUnfolderBase]: For 79768/79768 co-relation queries the response was YES. [2024-06-14 12:42:21,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 732 events. 379/732 cut-off events. For 79768/79768 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3561 event pairs, 105 based on Foata normal form. 2/732 useless extension candidates. Maximal degree in co-relation 5119. Up to 599 conditions per place. [2024-06-14 12:42:21,200 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 35 changer transitions 0/136 dead transitions. [2024-06-14 12:42:21,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 136 transitions, 1201 flow [2024-06-14 12:42:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:21,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:42:21,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 12:42:21,201 INFO L175 Difference]: Start difference. First operand has 176 places, 121 transitions, 895 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:42:21,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 136 transitions, 1201 flow [2024-06-14 12:42:21,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 136 transitions, 1123 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:21,292 INFO L231 Difference]: Finished difference. Result has 169 places, 122 transitions, 901 flow [2024-06-14 12:42:21,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=901, PETRI_PLACES=169, PETRI_TRANSITIONS=122} [2024-06-14 12:42:21,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-14 12:42:21,293 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 122 transitions, 901 flow [2024-06-14 12:42:21,293 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) [2024-06-14 12:42:21,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:21,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:21,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:42:21,294 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)] === [2024-06-14 12:42:21,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:21,294 INFO L85 PathProgramCache]: Analyzing trace with hash -329909761, now seen corresponding path program 3 times [2024-06-14 12:42:21,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:21,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147657212] [2024-06-14 12:42:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:21,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:22,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:22,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147657212] [2024-06-14 12:42:22,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147657212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:22,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:22,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:22,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453286861] [2024-06-14 12:42:22,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:22,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:22,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:22,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:22,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 122 transitions, 901 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) [2024-06-14 12:42:22,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:22,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:22,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:22,444 INFO L124 PetriNetUnfolderBase]: 383/740 cut-off events. [2024-06-14 12:42:22,444 INFO L125 PetriNetUnfolderBase]: For 77155/77155 co-relation queries the response was YES. [2024-06-14 12:42:22,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5180 conditions, 740 events. 383/740 cut-off events. For 77155/77155 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3611 event pairs, 103 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 5101. Up to 583 conditions per place. [2024-06-14 12:42:22,449 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 36 changer transitions 0/137 dead transitions. [2024-06-14 12:42:22,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 137 transitions, 1209 flow [2024-06-14 12:42:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:22,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 12:42:22,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 12:42:22,450 INFO L175 Difference]: Start difference. First operand has 169 places, 122 transitions, 901 flow. Second operand 10 states and 117 transitions. [2024-06-14 12:42:22,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 137 transitions, 1209 flow [2024-06-14 12:42:22,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 137 transitions, 1137 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:22,538 INFO L231 Difference]: Finished difference. Result has 171 places, 123 transitions, 916 flow [2024-06-14 12:42:22,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=916, PETRI_PLACES=171, PETRI_TRANSITIONS=123} [2024-06-14 12:42:22,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-14 12:42:22,539 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 123 transitions, 916 flow [2024-06-14 12:42:22,539 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) [2024-06-14 12:42:22,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:22,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:22,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:42:22,539 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)] === [2024-06-14 12:42:22,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash -357504113, now seen corresponding path program 26 times [2024-06-14 12:42:22,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:22,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540905366] [2024-06-14 12:42:22,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:22,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:23,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:23,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540905366] [2024-06-14 12:42:23,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540905366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:23,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:23,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:23,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737941766] [2024-06-14 12:42:23,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:23,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:23,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:23,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:23,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:23,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 123 transitions, 916 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) [2024-06-14 12:42:23,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:23,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:23,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:23,905 INFO L124 PetriNetUnfolderBase]: 370/717 cut-off events. [2024-06-14 12:42:23,906 INFO L125 PetriNetUnfolderBase]: For 76231/76231 co-relation queries the response was YES. [2024-06-14 12:42:23,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 717 events. 370/717 cut-off events. For 76231/76231 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3466 event pairs, 90 based on Foata normal form. 10/725 useless extension candidates. Maximal degree in co-relation 4499. Up to 540 conditions per place. [2024-06-14 12:42:23,910 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 33 changer transitions 11/143 dead transitions. [2024-06-14 12:42:23,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 143 transitions, 1258 flow [2024-06-14 12:42:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:42:23,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:42:23,911 INFO L175 Difference]: Start difference. First operand has 171 places, 123 transitions, 916 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:42:23,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 143 transitions, 1258 flow [2024-06-14 12:42:23,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 143 transitions, 1183 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:23,993 INFO L231 Difference]: Finished difference. Result has 174 places, 120 transitions, 884 flow [2024-06-14 12:42:23,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=884, PETRI_PLACES=174, PETRI_TRANSITIONS=120} [2024-06-14 12:42:23,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-14 12:42:23,993 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 120 transitions, 884 flow [2024-06-14 12:42:23,993 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) [2024-06-14 12:42:23,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:23,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:23,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:42:23,994 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)] === [2024-06-14 12:42:23,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:23,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1561115317, now seen corresponding path program 27 times [2024-06-14 12:42:23,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:23,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565403020] [2024-06-14 12:42:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:23,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:24,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:24,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565403020] [2024-06-14 12:42:24,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565403020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:24,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:24,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52505623] [2024-06-14 12:42:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:24,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:24,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:24,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:24,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:24,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 120 transitions, 884 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) [2024-06-14 12:42:24,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:24,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:24,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:25,146 INFO L124 PetriNetUnfolderBase]: 378/741 cut-off events. [2024-06-14 12:42:25,146 INFO L125 PetriNetUnfolderBase]: For 89643/89643 co-relation queries the response was YES. [2024-06-14 12:42:25,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5102 conditions, 741 events. 378/741 cut-off events. For 89643/89643 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3667 event pairs, 90 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 5021. Up to 408 conditions per place. [2024-06-14 12:42:25,151 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 58 changer transitions 10/145 dead transitions. [2024-06-14 12:42:25,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 145 transitions, 1366 flow [2024-06-14 12:42:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:42:25,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 12:42:25,152 INFO L175 Difference]: Start difference. First operand has 174 places, 120 transitions, 884 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:42:25,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 145 transitions, 1366 flow [2024-06-14 12:42:25,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 145 transitions, 1292 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:25,258 INFO L231 Difference]: Finished difference. Result has 172 places, 117 transitions, 916 flow [2024-06-14 12:42:25,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=916, PETRI_PLACES=172, PETRI_TRANSITIONS=117} [2024-06-14 12:42:25,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-14 12:42:25,258 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 117 transitions, 916 flow [2024-06-14 12:42:25,258 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) [2024-06-14 12:42:25,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:25,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:25,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:42:25,259 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)] === [2024-06-14 12:42:25,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:25,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1422437437, now seen corresponding path program 28 times [2024-06-14 12:42:25,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:25,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125805721] [2024-06-14 12:42:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:25,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125805721] [2024-06-14 12:42:26,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125805721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:26,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:26,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:26,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10351763] [2024-06-14 12:42:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:26,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:26,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:26,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:26,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 117 transitions, 916 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) [2024-06-14 12:42:26,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:26,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:26,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:26,593 INFO L124 PetriNetUnfolderBase]: 379/744 cut-off events. [2024-06-14 12:42:26,593 INFO L125 PetriNetUnfolderBase]: For 90251/90251 co-relation queries the response was YES. [2024-06-14 12:42:26,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5171 conditions, 744 events. 379/744 cut-off events. For 90251/90251 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3699 event pairs, 94 based on Foata normal form. 10/752 useless extension candidates. Maximal degree in co-relation 5091. Up to 532 conditions per place. [2024-06-14 12:42:26,597 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 40 changer transitions 13/141 dead transitions. [2024-06-14 12:42:26,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 141 transitions, 1282 flow [2024-06-14 12:42:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:26,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 12:42:26,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 12:42:26,597 INFO L175 Difference]: Start difference. First operand has 172 places, 117 transitions, 916 flow. Second operand 11 states and 134 transitions. [2024-06-14 12:42:26,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 141 transitions, 1282 flow [2024-06-14 12:42:26,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 141 transitions, 1157 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:26,682 INFO L231 Difference]: Finished difference. Result has 170 places, 116 transitions, 875 flow [2024-06-14 12:42:26,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=795, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=875, PETRI_PLACES=170, PETRI_TRANSITIONS=116} [2024-06-14 12:42:26,682 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-14 12:42:26,682 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 116 transitions, 875 flow [2024-06-14 12:42:26,682 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) [2024-06-14 12:42:26,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:26,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:26,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:42:26,683 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)] === [2024-06-14 12:42:26,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:26,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1395269521, now seen corresponding path program 29 times [2024-06-14 12:42:26,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:26,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508613319] [2024-06-14 12:42:26,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:26,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:27,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:27,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508613319] [2024-06-14 12:42:27,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508613319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:27,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:27,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:27,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177474135] [2024-06-14 12:42:27,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:27,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:27,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:27,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:27,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:27,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 116 transitions, 875 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) [2024-06-14 12:42:27,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:27,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:27,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:27,991 INFO L124 PetriNetUnfolderBase]: 366/721 cut-off events. [2024-06-14 12:42:27,991 INFO L125 PetriNetUnfolderBase]: For 80947/80947 co-relation queries the response was YES. [2024-06-14 12:42:27,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4942 conditions, 721 events. 366/721 cut-off events. For 80947/80947 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3542 event pairs, 92 based on Foata normal form. 8/727 useless extension candidates. Maximal degree in co-relation 4863. Up to 471 conditions per place. [2024-06-14 12:42:27,995 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 95 selfloop transitions, 33 changer transitions 11/141 dead transitions. [2024-06-14 12:42:27,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 141 transitions, 1349 flow [2024-06-14 12:42:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:42:27,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 12:42:27,996 INFO L175 Difference]: Start difference. First operand has 170 places, 116 transitions, 875 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:42:27,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 141 transitions, 1349 flow [2024-06-14 12:42:28,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 141 transitions, 1263 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:28,090 INFO L231 Difference]: Finished difference. Result has 169 places, 112 transitions, 834 flow [2024-06-14 12:42:28,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=834, PETRI_PLACES=169, PETRI_TRANSITIONS=112} [2024-06-14 12:42:28,090 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-14 12:42:28,090 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 112 transitions, 834 flow [2024-06-14 12:42:28,090 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) [2024-06-14 12:42:28,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:28,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:28,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:42:28,090 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)] === [2024-06-14 12:42:28,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1533653521, now seen corresponding path program 30 times [2024-06-14 12:42:28,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:28,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224356699] [2024-06-14 12:42:28,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:28,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:28,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224356699] [2024-06-14 12:42:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224356699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:28,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918755987] [2024-06-14 12:42:28,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:28,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:28,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:28,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:29,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:29,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 112 transitions, 834 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) [2024-06-14 12:42:29,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:29,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:29,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:29,364 INFO L124 PetriNetUnfolderBase]: 333/654 cut-off events. [2024-06-14 12:42:29,364 INFO L125 PetriNetUnfolderBase]: For 68058/68058 co-relation queries the response was YES. [2024-06-14 12:42:29,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4267 conditions, 654 events. 333/654 cut-off events. For 68058/68058 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3101 event pairs, 64 based on Foata normal form. 8/660 useless extension candidates. Maximal degree in co-relation 4189. Up to 390 conditions per place. [2024-06-14 12:42:29,368 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 53 changer transitions 14/132 dead transitions. [2024-06-14 12:42:29,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 132 transitions, 1148 flow [2024-06-14 12:42:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:42:29,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 12:42:29,368 INFO L175 Difference]: Start difference. First operand has 169 places, 112 transitions, 834 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:42:29,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 132 transitions, 1148 flow [2024-06-14 12:42:29,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 132 transitions, 1074 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:29,444 INFO L231 Difference]: Finished difference. Result has 164 places, 107 transitions, 839 flow [2024-06-14 12:42:29,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=839, PETRI_PLACES=164, PETRI_TRANSITIONS=107} [2024-06-14 12:42:29,444 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-14 12:42:29,444 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 107 transitions, 839 flow [2024-06-14 12:42:29,444 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) [2024-06-14 12:42:29,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:29,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:29,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:42:29,444 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)] === [2024-06-14 12:42:29,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:29,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1389757411, now seen corresponding path program 31 times [2024-06-14 12:42:29,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:29,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268414945] [2024-06-14 12:42:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:29,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:30,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:30,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268414945] [2024-06-14 12:42:30,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268414945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:30,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:30,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:30,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915765657] [2024-06-14 12:42:30,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:30,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:30,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:30,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:30,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:30,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:30,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 107 transitions, 839 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) [2024-06-14 12:42:30,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:30,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:30,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:30,815 INFO L124 PetriNetUnfolderBase]: 299/584 cut-off events. [2024-06-14 12:42:30,815 INFO L125 PetriNetUnfolderBase]: For 51417/51417 co-relation queries the response was YES. [2024-06-14 12:42:30,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 584 events. 299/584 cut-off events. For 51417/51417 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2644 event pairs, 67 based on Foata normal form. 10/592 useless extension candidates. Maximal degree in co-relation 3421. Up to 406 conditions per place. [2024-06-14 12:42:30,819 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 79 selfloop transitions, 26 changer transitions 19/126 dead transitions. [2024-06-14 12:42:30,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 126 transitions, 1145 flow [2024-06-14 12:42:30,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:30,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:42:30,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 12:42:30,820 INFO L175 Difference]: Start difference. First operand has 164 places, 107 transitions, 839 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:42:30,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 126 transitions, 1145 flow [2024-06-14 12:42:30,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 126 transitions, 1033 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:30,895 INFO L231 Difference]: Finished difference. Result has 157 places, 99 transitions, 732 flow [2024-06-14 12:42:30,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=732, PETRI_PLACES=157, PETRI_TRANSITIONS=99} [2024-06-14 12:42:30,896 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-14 12:42:30,896 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 99 transitions, 732 flow [2024-06-14 12:42:30,896 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) [2024-06-14 12:42:30,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:30,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:30,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:42:30,896 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)] === [2024-06-14 12:42:30,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:30,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1030904023, now seen corresponding path program 32 times [2024-06-14 12:42:30,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:30,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19481344] [2024-06-14 12:42:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:30,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:31,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:31,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19481344] [2024-06-14 12:42:31,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19481344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:31,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:31,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056982913] [2024-06-14 12:42:31,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:31,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:31,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:31,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:31,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:31,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:31,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 99 transitions, 732 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) [2024-06-14 12:42:31,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:31,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:31,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:32,226 INFO L124 PetriNetUnfolderBase]: 285/558 cut-off events. [2024-06-14 12:42:32,226 INFO L125 PetriNetUnfolderBase]: For 47764/47764 co-relation queries the response was YES. [2024-06-14 12:42:32,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3261 conditions, 558 events. 285/558 cut-off events. For 47764/47764 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2490 event pairs, 67 based on Foata normal form. 10/566 useless extension candidates. Maximal degree in co-relation 3187. Up to 442 conditions per place. [2024-06-14 12:42:32,229 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 22 changer transitions 11/118 dead transitions. [2024-06-14 12:42:32,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 118 transitions, 1022 flow [2024-06-14 12:42:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:32,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:42:32,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:42:32,230 INFO L175 Difference]: Start difference. First operand has 157 places, 99 transitions, 732 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:42:32,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 118 transitions, 1022 flow [2024-06-14 12:42:32,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 118 transitions, 958 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:32,275 INFO L231 Difference]: Finished difference. Result has 145 places, 96 transitions, 692 flow [2024-06-14 12:42:32,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=692, PETRI_PLACES=145, PETRI_TRANSITIONS=96} [2024-06-14 12:42:32,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-14 12:42:32,276 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 96 transitions, 692 flow [2024-06-14 12:42:32,276 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) [2024-06-14 12:42:32,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:32,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:32,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:42:32,276 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)] === [2024-06-14 12:42:32,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:32,277 INFO L85 PathProgramCache]: Analyzing trace with hash 653159961, now seen corresponding path program 4 times [2024-06-14 12:42:32,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:32,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154348520] [2024-06-14 12:42:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:32,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:33,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154348520] [2024-06-14 12:42:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154348520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:33,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:33,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270529986] [2024-06-14 12:42:33,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:33,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:33,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:33,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:33,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:33,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:33,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 96 transitions, 692 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) [2024-06-14 12:42:33,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:33,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:33,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:33,470 INFO L124 PetriNetUnfolderBase]: 265/518 cut-off events. [2024-06-14 12:42:33,470 INFO L125 PetriNetUnfolderBase]: For 30072/30072 co-relation queries the response was YES. [2024-06-14 12:42:33,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2986 conditions, 518 events. 265/518 cut-off events. For 30072/30072 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2249 event pairs, 63 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 2917. Up to 468 conditions per place. [2024-06-14 12:42:33,472 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 90 selfloop transitions, 19 changer transitions 0/111 dead transitions. [2024-06-14 12:42:33,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 111 transitions, 950 flow [2024-06-14 12:42:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 12:42:33,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 12:42:33,473 INFO L175 Difference]: Start difference. First operand has 145 places, 96 transitions, 692 flow. Second operand 10 states and 112 transitions. [2024-06-14 12:42:33,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 111 transitions, 950 flow [2024-06-14 12:42:33,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 111 transitions, 902 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:33,511 INFO L231 Difference]: Finished difference. Result has 142 places, 97 transitions, 698 flow [2024-06-14 12:42:33,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=698, PETRI_PLACES=142, PETRI_TRANSITIONS=97} [2024-06-14 12:42:33,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-14 12:42:33,512 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 97 transitions, 698 flow [2024-06-14 12:42:33,512 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) [2024-06-14 12:42:33,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:33,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:33,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:42:33,512 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)] === [2024-06-14 12:42:33,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:33,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1230205813, now seen corresponding path program 33 times [2024-06-14 12:42:33,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:33,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412828580] [2024-06-14 12:42:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:33,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:34,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:34,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412828580] [2024-06-14 12:42:34,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412828580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:34,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:34,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066665904] [2024-06-14 12:42:34,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:34,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:34,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:34,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:34,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:34,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 97 transitions, 698 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) [2024-06-14 12:42:34,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:34,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:34,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:34,750 INFO L124 PetriNetUnfolderBase]: 281/554 cut-off events. [2024-06-14 12:42:34,750 INFO L125 PetriNetUnfolderBase]: For 37678/37678 co-relation queries the response was YES. [2024-06-14 12:42:34,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3077 conditions, 554 events. 281/554 cut-off events. For 37678/37678 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2501 event pairs, 57 based on Foata normal form. 10/562 useless extension candidates. Maximal degree in co-relation 3009. Up to 372 conditions per place. [2024-06-14 12:42:34,752 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 41 changer transitions 11/118 dead transitions. [2024-06-14 12:42:34,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 118 transitions, 992 flow [2024-06-14 12:42:34,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:42:34,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 12:42:34,753 INFO L175 Difference]: Start difference. First operand has 142 places, 97 transitions, 698 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:42:34,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 118 transitions, 992 flow [2024-06-14 12:42:34,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 118 transitions, 948 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:34,797 INFO L231 Difference]: Finished difference. Result has 145 places, 94 transitions, 718 flow [2024-06-14 12:42:34,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=718, PETRI_PLACES=145, PETRI_TRANSITIONS=94} [2024-06-14 12:42:34,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-14 12:42:34,797 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 94 transitions, 718 flow [2024-06-14 12:42:34,797 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) [2024-06-14 12:42:34,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:34,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:34,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:42:34,797 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)] === [2024-06-14 12:42:34,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:34,798 INFO L85 PathProgramCache]: Analyzing trace with hash -117325957, now seen corresponding path program 34 times [2024-06-14 12:42:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:34,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586283879] [2024-06-14 12:42:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:34,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:35,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:35,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586283879] [2024-06-14 12:42:35,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586283879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:35,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:35,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:35,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993458569] [2024-06-14 12:42:35,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:35,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:35,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:35,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:35,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:35,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:35,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 94 transitions, 718 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) [2024-06-14 12:42:35,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:35,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:35,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:36,237 INFO L124 PetriNetUnfolderBase]: 287/572 cut-off events. [2024-06-14 12:42:36,237 INFO L125 PetriNetUnfolderBase]: For 46054/46054 co-relation queries the response was YES. [2024-06-14 12:42:36,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 572 events. 287/572 cut-off events. For 46054/46054 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2630 event pairs, 73 based on Foata normal form. 16/586 useless extension candidates. Maximal degree in co-relation 3133. Up to 448 conditions per place. [2024-06-14 12:42:36,240 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 15 changer transitions 16/116 dead transitions. [2024-06-14 12:42:36,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 116 transitions, 1028 flow [2024-06-14 12:42:36,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:42:36,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 12:42:36,241 INFO L175 Difference]: Start difference. First operand has 145 places, 94 transitions, 718 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:42:36,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 116 transitions, 1028 flow [2024-06-14 12:42:36,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 116 transitions, 938 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:36,296 INFO L231 Difference]: Finished difference. Result has 144 places, 90 transitions, 642 flow [2024-06-14 12:42:36,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=642, PETRI_PLACES=144, PETRI_TRANSITIONS=90} [2024-06-14 12:42:36,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-14 12:42:36,296 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 90 transitions, 642 flow [2024-06-14 12:42:36,297 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) [2024-06-14 12:42:36,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:36,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:36,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:42:36,297 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)] === [2024-06-14 12:42:36,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:36,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1023275667, now seen corresponding path program 5 times [2024-06-14 12:42:36,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:36,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235954335] [2024-06-14 12:42:36,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:36,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:37,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:37,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235954335] [2024-06-14 12:42:37,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235954335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:37,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:37,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:37,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415952567] [2024-06-14 12:42:37,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:37,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:37,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:37,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:37,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:37,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:37,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 90 transitions, 642 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) [2024-06-14 12:42:37,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:37,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:37,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:37,443 INFO L124 PetriNetUnfolderBase]: 249/494 cut-off events. [2024-06-14 12:42:37,443 INFO L125 PetriNetUnfolderBase]: For 28850/28850 co-relation queries the response was YES. [2024-06-14 12:42:37,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 494 events. 249/494 cut-off events. For 28850/28850 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2149 event pairs, 63 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2793. Up to 421 conditions per place. [2024-06-14 12:42:37,446 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 82 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-14 12:42:37,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 105 transitions, 890 flow [2024-06-14 12:42:37,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 12:42:37,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 12:42:37,446 INFO L175 Difference]: Start difference. First operand has 144 places, 90 transitions, 642 flow. Second operand 10 states and 113 transitions. [2024-06-14 12:42:37,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 105 transitions, 890 flow [2024-06-14 12:42:37,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 105 transitions, 848 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:37,494 INFO L231 Difference]: Finished difference. Result has 139 places, 91 transitions, 660 flow [2024-06-14 12:42:37,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=660, PETRI_PLACES=139, PETRI_TRANSITIONS=91} [2024-06-14 12:42:37,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-14 12:42:37,494 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 91 transitions, 660 flow [2024-06-14 12:42:37,494 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) [2024-06-14 12:42:37,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:37,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:37,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:42:37,495 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)] === [2024-06-14 12:42:37,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1222429879, now seen corresponding path program 6 times [2024-06-14 12:42:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174126909] [2024-06-14 12:42:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:37,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:38,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:38,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174126909] [2024-06-14 12:42:38,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174126909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:38,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:38,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:38,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102248461] [2024-06-14 12:42:38,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:38,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:38,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:38,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:38,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:38,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 91 transitions, 660 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) [2024-06-14 12:42:38,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:38,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:38,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:38,747 INFO L124 PetriNetUnfolderBase]: 253/502 cut-off events. [2024-06-14 12:42:38,748 INFO L125 PetriNetUnfolderBase]: For 27668/27668 co-relation queries the response was YES. [2024-06-14 12:42:38,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2880 conditions, 502 events. 253/502 cut-off events. For 27668/27668 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2196 event pairs, 57 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2813. Up to 456 conditions per place. [2024-06-14 12:42:38,751 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-14 12:42:38,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 106 transitions, 910 flow [2024-06-14 12:42:38,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 12:42:38,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 12:42:38,752 INFO L175 Difference]: Start difference. First operand has 139 places, 91 transitions, 660 flow. Second operand 10 states and 110 transitions. [2024-06-14 12:42:38,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 106 transitions, 910 flow [2024-06-14 12:42:38,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 106 transitions, 862 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:38,793 INFO L231 Difference]: Finished difference. Result has 141 places, 92 transitions, 662 flow [2024-06-14 12:42:38,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=662, PETRI_PLACES=141, PETRI_TRANSITIONS=92} [2024-06-14 12:42:38,794 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-14 12:42:38,794 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 92 transitions, 662 flow [2024-06-14 12:42:38,794 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) [2024-06-14 12:42:38,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:38,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:38,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:42:38,794 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)] === [2024-06-14 12:42:38,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:38,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1222439179, now seen corresponding path program 7 times [2024-06-14 12:42:38,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:38,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400520510] [2024-06-14 12:42:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:38,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:39,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:39,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400520510] [2024-06-14 12:42:39,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400520510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:39,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:39,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:39,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772771447] [2024-06-14 12:42:39,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:39,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:39,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:39,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:39,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:39,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:39,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 92 transitions, 662 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) [2024-06-14 12:42:39,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:39,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:39,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:40,042 INFO L124 PetriNetUnfolderBase]: 257/510 cut-off events. [2024-06-14 12:42:40,042 INFO L125 PetriNetUnfolderBase]: For 28841/28841 co-relation queries the response was YES. [2024-06-14 12:42:40,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 510 events. 257/510 cut-off events. For 28841/28841 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2227 event pairs, 63 based on Foata normal form. 2/510 useless extension candidates. Maximal degree in co-relation 2867. Up to 450 conditions per place. [2024-06-14 12:42:40,045 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 17 changer transitions 0/107 dead transitions. [2024-06-14 12:42:40,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 107 transitions, 916 flow [2024-06-14 12:42:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:42:40,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 12:42:40,046 INFO L175 Difference]: Start difference. First operand has 141 places, 92 transitions, 662 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:42:40,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 107 transitions, 916 flow [2024-06-14 12:42:40,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 107 transitions, 876 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:40,092 INFO L231 Difference]: Finished difference. Result has 143 places, 93 transitions, 676 flow [2024-06-14 12:42:40,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=676, PETRI_PLACES=143, PETRI_TRANSITIONS=93} [2024-06-14 12:42:40,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-14 12:42:40,092 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 93 transitions, 676 flow [2024-06-14 12:42:40,092 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) [2024-06-14 12:42:40,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:40,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:40,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 12:42:40,092 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)] === [2024-06-14 12:42:40,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:40,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1230211393, now seen corresponding path program 35 times [2024-06-14 12:42:40,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:40,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138870253] [2024-06-14 12:42:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:40,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:40,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138870253] [2024-06-14 12:42:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138870253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:40,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131926998] [2024-06-14 12:42:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:40,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:40,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:40,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:41,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:41,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 93 transitions, 676 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) [2024-06-14 12:42:41,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:41,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:41,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:41,490 INFO L124 PetriNetUnfolderBase]: 298/597 cut-off events. [2024-06-14 12:42:41,490 INFO L125 PetriNetUnfolderBase]: For 48323/48323 co-relation queries the response was YES. [2024-06-14 12:42:41,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3688 conditions, 597 events. 298/597 cut-off events. For 48323/48323 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2796 event pairs, 80 based on Foata normal form. 8/603 useless extension candidates. Maximal degree in co-relation 3619. Up to 390 conditions per place. [2024-06-14 12:42:41,494 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 30 changer transitions 10/119 dead transitions. [2024-06-14 12:42:41,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 119 transitions, 1090 flow [2024-06-14 12:42:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 12:42:41,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 12:42:41,495 INFO L175 Difference]: Start difference. First operand has 143 places, 93 transitions, 676 flow. Second operand 12 states and 142 transitions. [2024-06-14 12:42:41,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 119 transitions, 1090 flow [2024-06-14 12:42:41,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 119 transitions, 1046 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:41,546 INFO L231 Difference]: Finished difference. Result has 147 places, 88 transitions, 662 flow [2024-06-14 12:42:41,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=662, PETRI_PLACES=147, PETRI_TRANSITIONS=88} [2024-06-14 12:42:41,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-14 12:42:41,546 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 88 transitions, 662 flow [2024-06-14 12:42:41,546 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) [2024-06-14 12:42:41,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:41,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:41,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 12:42:41,547 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)] === [2024-06-14 12:42:41,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1230355543, now seen corresponding path program 36 times [2024-06-14 12:42:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633266314] [2024-06-14 12:42:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633266314] [2024-06-14 12:42:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633266314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:42,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772260397] [2024-06-14 12:42:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:42,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:42,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:42,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:42,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:42,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 88 transitions, 662 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) [2024-06-14 12:42:42,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:42,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:42,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:42,932 INFO L124 PetriNetUnfolderBase]: 336/679 cut-off events. [2024-06-14 12:42:42,932 INFO L125 PetriNetUnfolderBase]: For 71420/71420 co-relation queries the response was YES. [2024-06-14 12:42:42,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4851 conditions, 679 events. 336/679 cut-off events. For 71420/71420 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3355 event pairs, 113 based on Foata normal form. 8/685 useless extension candidates. Maximal degree in co-relation 4781. Up to 338 conditions per place. [2024-06-14 12:42:42,935 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 27 changer transitions 11/114 dead transitions. [2024-06-14 12:42:42,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 114 transitions, 1082 flow [2024-06-14 12:42:42,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:42:42,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 12:42:42,936 INFO L175 Difference]: Start difference. First operand has 147 places, 88 transitions, 662 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:42:42,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 114 transitions, 1082 flow [2024-06-14 12:42:42,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 114 transitions, 1008 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 12:42:42,992 INFO L231 Difference]: Finished difference. Result has 141 places, 84 transitions, 625 flow [2024-06-14 12:42:42,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=625, PETRI_PLACES=141, PETRI_TRANSITIONS=84} [2024-06-14 12:42:42,992 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-14 12:42:42,992 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 84 transitions, 625 flow [2024-06-14 12:42:42,992 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) [2024-06-14 12:42:42,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:42,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:42,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 12:42:42,993 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)] === [2024-06-14 12:42:42,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:42,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1030909603, now seen corresponding path program 37 times [2024-06-14 12:42:42,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:42,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891284479] [2024-06-14 12:42:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:42,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:43,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:43,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891284479] [2024-06-14 12:42:43,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891284479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:43,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:43,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:43,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555003966] [2024-06-14 12:42:43,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:43,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:43,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:43,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:43,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:44,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:44,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 84 transitions, 625 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) [2024-06-14 12:42:44,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:44,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:44,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:44,300 INFO L124 PetriNetUnfolderBase]: 325/658 cut-off events. [2024-06-14 12:42:44,301 INFO L125 PetriNetUnfolderBase]: For 63034/63034 co-relation queries the response was YES. [2024-06-14 12:42:44,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4620 conditions, 658 events. 325/658 cut-off events. For 63034/63034 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3235 event pairs, 121 based on Foata normal form. 8/664 useless extension candidates. Maximal degree in co-relation 4553. Up to 558 conditions per place. [2024-06-14 12:42:44,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 71 selfloop transitions, 16 changer transitions 13/102 dead transitions. [2024-06-14 12:42:44,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 102 transitions, 875 flow [2024-06-14 12:42:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:42:44,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 12:42:44,305 INFO L175 Difference]: Start difference. First operand has 141 places, 84 transitions, 625 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:42:44,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 102 transitions, 875 flow [2024-06-14 12:42:44,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 102 transitions, 822 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:44,350 INFO L231 Difference]: Finished difference. Result has 136 places, 80 transitions, 577 flow [2024-06-14 12:42:44,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=577, PETRI_PLACES=136, PETRI_TRANSITIONS=80} [2024-06-14 12:42:44,353 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-14 12:42:44,353 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 80 transitions, 577 flow [2024-06-14 12:42:44,353 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) [2024-06-14 12:42:44,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:44,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:44,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 12:42:44,354 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)] === [2024-06-14 12:42:44,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash 652944635, now seen corresponding path program 38 times [2024-06-14 12:42:44,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:44,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55629211] [2024-06-14 12:42:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:44,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:45,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:45,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55629211] [2024-06-14 12:42:45,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55629211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:45,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:45,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:45,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077771308] [2024-06-14 12:42:45,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:45,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:45,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:45,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:45,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:45,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:45,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 80 transitions, 577 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) [2024-06-14 12:42:45,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:45,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:45,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:45,752 INFO L124 PetriNetUnfolderBase]: 317/642 cut-off events. [2024-06-14 12:42:45,753 INFO L125 PetriNetUnfolderBase]: For 55032/55032 co-relation queries the response was YES. [2024-06-14 12:42:45,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4391 conditions, 642 events. 317/642 cut-off events. For 55032/55032 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3124 event pairs, 113 based on Foata normal form. 8/648 useless extension candidates. Maximal degree in co-relation 4327. Up to 430 conditions per place. [2024-06-14 12:42:45,756 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 19 changer transitions 7/105 dead transitions. [2024-06-14 12:42:45,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 105 transitions, 965 flow [2024-06-14 12:42:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:45,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 12:42:45,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 12:42:45,756 INFO L175 Difference]: Start difference. First operand has 136 places, 80 transitions, 577 flow. Second operand 11 states and 129 transitions. [2024-06-14 12:42:45,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 105 transitions, 965 flow [2024-06-14 12:42:45,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 105 transitions, 917 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:45,791 INFO L231 Difference]: Finished difference. Result has 130 places, 78 transitions, 561 flow [2024-06-14 12:42:45,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=561, PETRI_PLACES=130, PETRI_TRANSITIONS=78} [2024-06-14 12:42:45,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-14 12:42:45,791 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 78 transitions, 561 flow [2024-06-14 12:42:45,791 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) [2024-06-14 12:42:45,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:45,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:45,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 12:42:45,791 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)] === [2024-06-14 12:42:45,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:45,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1587028115, now seen corresponding path program 39 times [2024-06-14 12:42:45,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:45,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194352069] [2024-06-14 12:42:45,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:45,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:46,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:46,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194352069] [2024-06-14 12:42:46,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194352069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:46,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:46,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510048614] [2024-06-14 12:42:46,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:46,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:46,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 78 transitions, 561 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) [2024-06-14 12:42:46,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:46,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:46,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:47,151 INFO L124 PetriNetUnfolderBase]: 286/581 cut-off events. [2024-06-14 12:42:47,151 INFO L125 PetriNetUnfolderBase]: For 41326/41326 co-relation queries the response was YES. [2024-06-14 12:42:47,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 581 events. 286/581 cut-off events. For 41326/41326 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2722 event pairs, 104 based on Foata normal form. 10/589 useless extension candidates. Maximal degree in co-relation 3599. Up to 474 conditions per place. [2024-06-14 12:42:47,154 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 15 changer transitions 16/97 dead transitions. [2024-06-14 12:42:47,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 97 transitions, 809 flow [2024-06-14 12:42:47,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:42:47,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 12:42:47,155 INFO L175 Difference]: Start difference. First operand has 130 places, 78 transitions, 561 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:42:47,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 97 transitions, 809 flow [2024-06-14 12:42:47,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 97 transitions, 772 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:47,187 INFO L231 Difference]: Finished difference. Result has 129 places, 72 transitions, 512 flow [2024-06-14 12:42:47,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=512, PETRI_PLACES=129, PETRI_TRANSITIONS=72} [2024-06-14 12:42:47,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-14 12:42:47,188 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 72 transitions, 512 flow [2024-06-14 12:42:47,188 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) [2024-06-14 12:42:47,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:47,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:47,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 12:42:47,188 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)] === [2024-06-14 12:42:47,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash 652950215, now seen corresponding path program 40 times [2024-06-14 12:42:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:47,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814062178] [2024-06-14 12:42:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:47,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:47,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:47,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814062178] [2024-06-14 12:42:47,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814062178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:47,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:47,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:47,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624938186] [2024-06-14 12:42:47,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:47,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:47,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:48,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:48,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 72 transitions, 512 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) [2024-06-14 12:42:48,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:48,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:48,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:48,367 INFO L124 PetriNetUnfolderBase]: 275/560 cut-off events. [2024-06-14 12:42:48,367 INFO L125 PetriNetUnfolderBase]: For 39327/39327 co-relation queries the response was YES. [2024-06-14 12:42:48,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3515 conditions, 560 events. 275/560 cut-off events. For 39327/39327 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2601 event pairs, 90 based on Foata normal form. 10/568 useless extension candidates. Maximal degree in co-relation 3455. Up to 433 conditions per place. [2024-06-14 12:42:48,370 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 56 selfloop transitions, 22 changer transitions 13/93 dead transitions. [2024-06-14 12:42:48,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 93 transitions, 756 flow [2024-06-14 12:42:48,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:42:48,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 12:42:48,370 INFO L175 Difference]: Start difference. First operand has 129 places, 72 transitions, 512 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:42:48,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 93 transitions, 756 flow [2024-06-14 12:42:48,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 93 transitions, 716 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:48,397 INFO L231 Difference]: Finished difference. Result has 120 places, 67 transitions, 474 flow [2024-06-14 12:42:48,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=474, PETRI_PLACES=120, PETRI_TRANSITIONS=67} [2024-06-14 12:42:48,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-14 12:42:48,397 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 67 transitions, 474 flow [2024-06-14 12:42:48,398 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) [2024-06-14 12:42:48,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:48,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:48,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 12:42:48,398 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)] === [2024-06-14 12:42:48,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:48,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1233481069, now seen corresponding path program 8 times [2024-06-14 12:42:48,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:48,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917702704] [2024-06-14 12:42:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:48,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917702704] [2024-06-14 12:42:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917702704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:49,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:49,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:49,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53825800] [2024-06-14 12:42:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:49,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:49,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:49,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:49,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 67 transitions, 474 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) [2024-06-14 12:42:49,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:49,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:49,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:49,692 INFO L124 PetriNetUnfolderBase]: 253/514 cut-off events. [2024-06-14 12:42:49,692 INFO L125 PetriNetUnfolderBase]: For 26893/26893 co-relation queries the response was YES. [2024-06-14 12:42:49,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3203 conditions, 514 events. 253/514 cut-off events. For 26893/26893 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2311 event pairs, 90 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 3147. Up to 468 conditions per place. [2024-06-14 12:42:49,695 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2024-06-14 12:42:49,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 82 transitions, 680 flow [2024-06-14 12:42:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:42:49,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-14 12:42:49,696 INFO L175 Difference]: Start difference. First operand has 120 places, 67 transitions, 474 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:42:49,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 82 transitions, 680 flow [2024-06-14 12:42:49,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 82 transitions, 614 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:49,721 INFO L231 Difference]: Finished difference. Result has 113 places, 68 transitions, 458 flow [2024-06-14 12:42:49,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=458, PETRI_PLACES=113, PETRI_TRANSITIONS=68} [2024-06-14 12:42:49,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-14 12:42:49,721 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 68 transitions, 458 flow [2024-06-14 12:42:49,721 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) [2024-06-14 12:42:49,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:49,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:49,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 12:42:49,721 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)] === [2024-06-14 12:42:49,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:49,721 INFO L85 PathProgramCache]: Analyzing trace with hash 660569271, now seen corresponding path program 9 times [2024-06-14 12:42:49,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:49,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142175723] [2024-06-14 12:42:49,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:49,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:50,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:50,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142175723] [2024-06-14 12:42:50,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142175723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:50,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:50,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:50,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303481821] [2024-06-14 12:42:50,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:50,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:50,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:50,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:50,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:50,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 68 transitions, 458 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) [2024-06-14 12:42:50,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:50,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:50,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:51,095 INFO L124 PetriNetUnfolderBase]: 250/509 cut-off events. [2024-06-14 12:42:51,095 INFO L125 PetriNetUnfolderBase]: For 24452/24452 co-relation queries the response was YES. [2024-06-14 12:42:51,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 509 events. 250/509 cut-off events. For 24452/24452 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2280 event pairs, 97 based on Foata normal form. 2/509 useless extension candidates. Maximal degree in co-relation 2976. Up to 468 conditions per place. [2024-06-14 12:42:51,098 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 15 changer transitions 0/82 dead transitions. [2024-06-14 12:42:51,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 82 transitions, 664 flow [2024-06-14 12:42:51,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:42:51,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 12:42:51,099 INFO L175 Difference]: Start difference. First operand has 113 places, 68 transitions, 458 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:42:51,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 82 transitions, 664 flow [2024-06-14 12:42:51,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 82 transitions, 624 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:51,122 INFO L231 Difference]: Finished difference. Result has 115 places, 69 transitions, 472 flow [2024-06-14 12:42:51,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=472, PETRI_PLACES=115, PETRI_TRANSITIONS=69} [2024-06-14 12:42:51,123 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 12:42:51,123 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 69 transitions, 472 flow [2024-06-14 12:42:51,123 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) [2024-06-14 12:42:51,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:51,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:51,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 12:42:51,123 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)] === [2024-06-14 12:42:51,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:51,123 INFO L85 PathProgramCache]: Analyzing trace with hash 660578571, now seen corresponding path program 10 times [2024-06-14 12:42:51,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:51,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321065730] [2024-06-14 12:42:51,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:51,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:51,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321065730] [2024-06-14 12:42:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321065730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:51,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:51,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978893371] [2024-06-14 12:42:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:51,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:51,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:51,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:51,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:52,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:52,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 69 transitions, 472 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) [2024-06-14 12:42:52,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:52,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:52,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:52,283 INFO L124 PetriNetUnfolderBase]: 247/504 cut-off events. [2024-06-14 12:42:52,284 INFO L125 PetriNetUnfolderBase]: For 24587/24587 co-relation queries the response was YES. [2024-06-14 12:42:52,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2958 conditions, 504 events. 247/504 cut-off events. For 24587/24587 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2263 event pairs, 96 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2904. Up to 449 conditions per place. [2024-06-14 12:42:52,286 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 16 changer transitions 0/82 dead transitions. [2024-06-14 12:42:52,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 82 transitions, 660 flow [2024-06-14 12:42:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:52,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:52,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:42:52,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 12:42:52,286 INFO L175 Difference]: Start difference. First operand has 115 places, 69 transitions, 472 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:42:52,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 82 transitions, 660 flow [2024-06-14 12:42:52,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 82 transitions, 616 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:52,312 INFO L231 Difference]: Finished difference. Result has 117 places, 69 transitions, 464 flow [2024-06-14 12:42:52,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=464, PETRI_PLACES=117, PETRI_TRANSITIONS=69} [2024-06-14 12:42:52,312 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-14 12:42:52,312 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 69 transitions, 464 flow [2024-06-14 12:42:52,312 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) [2024-06-14 12:42:52,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:52,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:52,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 12:42:52,313 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)] === [2024-06-14 12:42:52,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash 660301865, now seen corresponding path program 41 times [2024-06-14 12:42:52,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:52,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139385659] [2024-06-14 12:42:52,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:52,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:53,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:53,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139385659] [2024-06-14 12:42:53,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139385659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:53,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:53,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:53,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058157384] [2024-06-14 12:42:53,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:53,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:53,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:53,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:53,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:53,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:53,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 69 transitions, 464 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) [2024-06-14 12:42:53,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:53,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:53,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:53,595 INFO L124 PetriNetUnfolderBase]: 227/468 cut-off events. [2024-06-14 12:42:53,595 INFO L125 PetriNetUnfolderBase]: For 24759/24759 co-relation queries the response was YES. [2024-06-14 12:42:53,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2303 conditions, 468 events. 227/468 cut-off events. For 24759/24759 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2057 event pairs, 76 based on Foata normal form. 16/482 useless extension candidates. Maximal degree in co-relation 2248. Up to 353 conditions per place. [2024-06-14 12:42:53,597 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 59 selfloop transitions, 11 changer transitions 16/88 dead transitions. [2024-06-14 12:42:53,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 88 transitions, 694 flow [2024-06-14 12:42:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 12:42:53,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 12:42:53,598 INFO L175 Difference]: Start difference. First operand has 117 places, 69 transitions, 464 flow. Second operand 11 states and 122 transitions. [2024-06-14 12:42:53,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 88 transitions, 694 flow [2024-06-14 12:42:53,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 88 transitions, 626 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:53,620 INFO L231 Difference]: Finished difference. Result has 119 places, 63 transitions, 376 flow [2024-06-14 12:42:53,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=376, PETRI_PLACES=119, PETRI_TRANSITIONS=63} [2024-06-14 12:42:53,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-14 12:42:53,620 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 63 transitions, 376 flow [2024-06-14 12:42:53,620 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) [2024-06-14 12:42:53,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:53,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:53,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 12:42:53,620 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)] === [2024-06-14 12:42:53,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:53,621 INFO L85 PathProgramCache]: Analyzing trace with hash 908463243, now seen corresponding path program 42 times [2024-06-14 12:42:53,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:53,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778414891] [2024-06-14 12:42:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:53,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:54,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778414891] [2024-06-14 12:42:54,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778414891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:54,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:54,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:54,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601988791] [2024-06-14 12:42:54,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:54,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:54,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:54,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:54,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:54,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:54,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 63 transitions, 376 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) [2024-06-14 12:42:54,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:54,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:54,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:54,759 INFO L124 PetriNetUnfolderBase]: 170/357 cut-off events. [2024-06-14 12:42:54,759 INFO L125 PetriNetUnfolderBase]: For 15078/15078 co-relation queries the response was YES. [2024-06-14 12:42:54,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 357 events. 170/357 cut-off events. For 15078/15078 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1424 event pairs, 45 based on Foata normal form. 10/365 useless extension candidates. Maximal degree in co-relation 1448. Up to 267 conditions per place. [2024-06-14 12:42:54,761 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 55 selfloop transitions, 14 changer transitions 11/82 dead transitions. [2024-06-14 12:42:54,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 82 transitions, 582 flow [2024-06-14 12:42:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:54,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:42:54,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 12:42:54,761 INFO L175 Difference]: Start difference. First operand has 119 places, 63 transitions, 376 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:42:54,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 82 transitions, 582 flow [2024-06-14 12:42:54,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 82 transitions, 539 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:54,771 INFO L231 Difference]: Finished difference. Result has 110 places, 59 transitions, 333 flow [2024-06-14 12:42:54,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=333, PETRI_PLACES=110, PETRI_TRANSITIONS=59} [2024-06-14 12:42:54,771 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-14 12:42:54,771 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 59 transitions, 333 flow [2024-06-14 12:42:54,771 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) [2024-06-14 12:42:54,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:54,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:54,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 12:42:54,772 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)] === [2024-06-14 12:42:54,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1751200106, now seen corresponding path program 1 times [2024-06-14 12:42:54,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:54,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286439351] [2024-06-14 12:42:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:54,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:55,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:55,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286439351] [2024-06-14 12:42:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286439351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:55,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:55,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009141400] [2024-06-14 12:42:55,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:55,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:55,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:56,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:56,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 59 transitions, 333 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:56,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:56,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:56,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:56,437 INFO L124 PetriNetUnfolderBase]: 137/294 cut-off events. [2024-06-14 12:42:56,437 INFO L125 PetriNetUnfolderBase]: For 6989/6989 co-relation queries the response was YES. [2024-06-14 12:42:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 294 events. 137/294 cut-off events. For 6989/6989 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1106 event pairs, 32 based on Foata normal form. 6/298 useless extension candidates. Maximal degree in co-relation 996. Up to 174 conditions per place. [2024-06-14 12:42:56,439 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 46 selfloop transitions, 17 changer transitions 12/77 dead transitions. [2024-06-14 12:42:56,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 77 transitions, 525 flow [2024-06-14 12:42:56,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 12:42:56,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-14 12:42:56,439 INFO L175 Difference]: Start difference. First operand has 110 places, 59 transitions, 333 flow. Second operand 11 states and 118 transitions. [2024-06-14 12:42:56,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 77 transitions, 525 flow [2024-06-14 12:42:56,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 77 transitions, 482 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:56,446 INFO L231 Difference]: Finished difference. Result has 104 places, 55 transitions, 309 flow [2024-06-14 12:42:56,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=309, PETRI_PLACES=104, PETRI_TRANSITIONS=55} [2024-06-14 12:42:56,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-14 12:42:56,447 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 55 transitions, 309 flow [2024-06-14 12:42:56,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:56,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:56,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:56,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 12:42:56,447 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)] === [2024-06-14 12:42:56,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1810853074, now seen corresponding path program 2 times [2024-06-14 12:42:56,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:56,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704349325] [2024-06-14 12:42:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:56,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:57,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:57,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704349325] [2024-06-14 12:42:57,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704349325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:57,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:57,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:57,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378310925] [2024-06-14 12:42:57,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:57,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:57,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:57,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:57,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:57,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:57,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 55 transitions, 309 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:57,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:57,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:57,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:58,079 INFO L124 PetriNetUnfolderBase]: 123/272 cut-off events. [2024-06-14 12:42:58,079 INFO L125 PetriNetUnfolderBase]: For 6586/6586 co-relation queries the response was YES. [2024-06-14 12:42:58,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 272 events. 123/272 cut-off events. For 6586/6586 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1005 event pairs, 30 based on Foata normal form. 6/276 useless extension candidates. Maximal degree in co-relation 906. Up to 146 conditions per place. [2024-06-14 12:42:58,080 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 35 selfloop transitions, 7 changer transitions 29/73 dead transitions. [2024-06-14 12:42:58,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 73 transitions, 491 flow [2024-06-14 12:42:58,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:58,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 12:42:58,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 12:42:58,081 INFO L175 Difference]: Start difference. First operand has 104 places, 55 transitions, 309 flow. Second operand 11 states and 117 transitions. [2024-06-14 12:42:58,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 73 transitions, 491 flow [2024-06-14 12:42:58,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 73 transitions, 451 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:58,086 INFO L231 Difference]: Finished difference. Result has 98 places, 41 transitions, 225 flow [2024-06-14 12:42:58,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=225, PETRI_PLACES=98, PETRI_TRANSITIONS=41} [2024-06-14 12:42:58,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-14 12:42:58,086 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 41 transitions, 225 flow [2024-06-14 12:42:58,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:58,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:58,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 12:42:58,086 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)] === [2024-06-14 12:42:58,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1656773802, now seen corresponding path program 3 times [2024-06-14 12:42:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:58,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641656986] [2024-06-14 12:42:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:58,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:59,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:59,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641656986] [2024-06-14 12:42:59,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641656986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:59,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:59,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:59,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768865008] [2024-06-14 12:42:59,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:59,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:59,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:59,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:59,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:59,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:42:59,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 41 transitions, 225 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:59,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:59,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:42:59,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:59,729 INFO L124 PetriNetUnfolderBase]: 97/213 cut-off events. [2024-06-14 12:42:59,729 INFO L125 PetriNetUnfolderBase]: For 5769/5769 co-relation queries the response was YES. [2024-06-14 12:42:59,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 213 events. 97/213 cut-off events. For 5769/5769 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 701 event pairs, 24 based on Foata normal form. 6/218 useless extension candidates. Maximal degree in co-relation 720. Up to 119 conditions per place. [2024-06-14 12:42:59,730 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 32 selfloop transitions, 9 changer transitions 17/60 dead transitions. [2024-06-14 12:42:59,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 60 transitions, 394 flow [2024-06-14 12:42:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:59,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 12:42:59,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 12:42:59,730 INFO L175 Difference]: Start difference. First operand has 98 places, 41 transitions, 225 flow. Second operand 11 states and 112 transitions. [2024-06-14 12:42:59,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 60 transitions, 394 flow [2024-06-14 12:42:59,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 60 transitions, 356 flow, removed 11 selfloop flow, removed 16 redundant places. [2024-06-14 12:42:59,733 INFO L231 Difference]: Finished difference. Result has 77 places, 39 transitions, 218 flow [2024-06-14 12:42:59,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=218, PETRI_PLACES=77, PETRI_TRANSITIONS=39} [2024-06-14 12:42:59,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-14 12:42:59,734 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 39 transitions, 218 flow [2024-06-14 12:42:59,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:59,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:59,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:59,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 12:42:59,734 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)] === [2024-06-14 12:42:59,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash 890712134, now seen corresponding path program 4 times [2024-06-14 12:42:59,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:59,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144771828] [2024-06-14 12:42:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:59,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:00,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:00,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:00,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144771828] [2024-06-14 12:43:00,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144771828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:00,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:00,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:43:00,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487802685] [2024-06-14 12:43:00,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:00,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:43:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:00,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:43:00,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:43:01,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:43:01,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 39 transitions, 218 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:01,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:01,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:43:01,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:01,384 INFO L124 PetriNetUnfolderBase]: 83/183 cut-off events. [2024-06-14 12:43:01,384 INFO L125 PetriNetUnfolderBase]: For 2693/2693 co-relation queries the response was YES. [2024-06-14 12:43:01,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 183 events. 83/183 cut-off events. For 2693/2693 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 561 event pairs, 22 based on Foata normal form. 6/188 useless extension candidates. Maximal degree in co-relation 610. Up to 101 conditions per place. [2024-06-14 12:43:01,385 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 29 selfloop transitions, 8 changer transitions 15/54 dead transitions. [2024-06-14 12:43:01,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 54 transitions, 358 flow [2024-06-14 12:43:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:01,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 12:43:01,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 12:43:01,386 INFO L175 Difference]: Start difference. First operand has 77 places, 39 transitions, 218 flow. Second operand 11 states and 110 transitions. [2024-06-14 12:43:01,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 54 transitions, 358 flow [2024-06-14 12:43:01,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 54 transitions, 339 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:01,388 INFO L231 Difference]: Finished difference. Result has 70 places, 34 transitions, 190 flow [2024-06-14 12:43:01,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=190, PETRI_PLACES=70, PETRI_TRANSITIONS=34} [2024-06-14 12:43:01,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-14 12:43:01,388 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 34 transitions, 190 flow [2024-06-14 12:43:01,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:01,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:01,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:01,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 12:43:01,389 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)] === [2024-06-14 12:43:01,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1964881358, now seen corresponding path program 5 times [2024-06-14 12:43:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:01,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211357667] [2024-06-14 12:43:01,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:01,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:02,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:02,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211357667] [2024-06-14 12:43:02,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211357667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:02,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:02,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:43:02,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801660618] [2024-06-14 12:43:02,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:02,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:43:02,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:02,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:43:02,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:43:02,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:43:02,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 34 transitions, 190 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:02,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:02,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:43:02,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:03,003 INFO L124 PetriNetUnfolderBase]: 70/156 cut-off events. [2024-06-14 12:43:03,003 INFO L125 PetriNetUnfolderBase]: For 1810/1810 co-relation queries the response was YES. [2024-06-14 12:43:03,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 156 events. 70/156 cut-off events. For 1810/1810 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 440 event pairs, 18 based on Foata normal form. 6/161 useless extension candidates. Maximal degree in co-relation 512. Up to 64 conditions per place. [2024-06-14 12:43:03,004 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 24 selfloop transitions, 11 changer transitions 10/47 dead transitions. [2024-06-14 12:43:03,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 47 transitions, 308 flow [2024-06-14 12:43:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-14 12:43:03,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-14 12:43:03,005 INFO L175 Difference]: Start difference. First operand has 70 places, 34 transitions, 190 flow. Second operand 11 states and 108 transitions. [2024-06-14 12:43:03,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 47 transitions, 308 flow [2024-06-14 12:43:03,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 47 transitions, 284 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:43:03,006 INFO L231 Difference]: Finished difference. Result has 63 places, 30 transitions, 167 flow [2024-06-14 12:43:03,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=167, PETRI_PLACES=63, PETRI_TRANSITIONS=30} [2024-06-14 12:43:03,007 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-14 12:43:03,007 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 30 transitions, 167 flow [2024-06-14 12:43:03,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:03,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:03,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:03,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 12:43:03,007 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)] === [2024-06-14 12:43:03,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:03,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1902163720, now seen corresponding path program 6 times [2024-06-14 12:43:03,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:03,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763388597] [2024-06-14 12:43:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:03,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:04,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:04,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:04,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763388597] [2024-06-14 12:43:04,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763388597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:04,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:04,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:43:04,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665294812] [2024-06-14 12:43:04,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:04,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:43:04,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:43:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:43:04,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:43:04,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 30 transitions, 167 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:04,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:04,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:43:04,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:04,601 INFO L124 PetriNetUnfolderBase]: 58/136 cut-off events. [2024-06-14 12:43:04,601 INFO L125 PetriNetUnfolderBase]: For 1227/1227 co-relation queries the response was YES. [2024-06-14 12:43:04,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 136 events. 58/136 cut-off events. For 1227/1227 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 354 event pairs, 18 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 442. Up to 60 conditions per place. [2024-06-14 12:43:04,601 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 19 selfloop transitions, 6 changer transitions 16/43 dead transitions. [2024-06-14 12:43:04,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 43 transitions, 279 flow [2024-06-14 12:43:04,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 12:43:04,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30113636363636365 [2024-06-14 12:43:04,602 INFO L175 Difference]: Start difference. First operand has 63 places, 30 transitions, 167 flow. Second operand 11 states and 106 transitions. [2024-06-14 12:43:04,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 43 transitions, 279 flow [2024-06-14 12:43:04,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 43 transitions, 251 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:43:04,603 INFO L231 Difference]: Finished difference. Result has 59 places, 23 transitions, 110 flow [2024-06-14 12:43:04,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=110, PETRI_PLACES=59, PETRI_TRANSITIONS=23} [2024-06-14 12:43:04,603 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-14 12:43:04,603 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 23 transitions, 110 flow [2024-06-14 12:43:04,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:04,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:04,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:04,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 12:43:04,604 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)] === [2024-06-14 12:43:04,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:04,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1974712388, now seen corresponding path program 7 times [2024-06-14 12:43:04,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120203216] [2024-06-14 12:43:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:04,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:05,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:05,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120203216] [2024-06-14 12:43:05,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120203216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:05,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:05,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:05,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121845615] [2024-06-14 12:43:05,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:05,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:05,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:05,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 12:43:05,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 23 transitions, 110 flow. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:05,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:05,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 12:43:05,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:05,968 INFO L124 PetriNetUnfolderBase]: 27/71 cut-off events. [2024-06-14 12:43:05,968 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2024-06-14 12:43:05,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 71 events. 27/71 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 1 based on Foata normal form. 6/76 useless extension candidates. Maximal degree in co-relation 186. Up to 24 conditions per place. [2024-06-14 12:43:05,968 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-14 12:43:05,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 32 transitions, 164 flow [2024-06-14 12:43:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-14 12:43:05,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2755681818181818 [2024-06-14 12:43:05,969 INFO L175 Difference]: Start difference. First operand has 59 places, 23 transitions, 110 flow. Second operand 11 states and 97 transitions. [2024-06-14 12:43:05,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 32 transitions, 164 flow [2024-06-14 12:43:05,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-14 12:43:05,969 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-14 12:43:05,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2024-06-14 12:43:05,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-14 12:43:05,970 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-14 12:43:05,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:05,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:43:05,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:43:05,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:43:05,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:43:05,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 12:43:05,973 INFO L445 BasicCegarLoop]: Path program histogram: [42, 20, 11, 10, 10, 9, 7, 6, 6, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:05,975 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:43:05,975 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:43:05,978 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:43:05,978 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:43:05,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:43:05 BasicIcfg [2024-06-14 12:43:05,979 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:43:05,979 INFO L158 Benchmark]: Toolchain (without parser) took 190224.99ms. Allocated memory was 151.0MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 92.0MB in the beginning and 938.4MB in the end (delta: -846.4MB). Peak memory consumption was 305.0MB. Max. memory is 16.1GB. [2024-06-14 12:43:05,979 INFO L158 Benchmark]: Witness Parser took 0.29ms. Allocated memory is still 151.0MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:43:05,979 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:43:05,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.87ms. Allocated memory is still 151.0MB. Free memory was 91.3MB in the beginning and 58.5MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-14 12:43:05,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.58ms. Allocated memory is still 151.0MB. Free memory was 58.5MB in the beginning and 55.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:43:05,980 INFO L158 Benchmark]: Boogie Preprocessor took 77.80ms. Allocated memory is still 151.0MB. Free memory was 55.7MB in the beginning and 52.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:43:05,980 INFO L158 Benchmark]: RCFGBuilder took 588.40ms. Allocated memory is still 151.0MB. Free memory was 52.3MB in the beginning and 79.6MB in the end (delta: -27.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-06-14 12:43:05,980 INFO L158 Benchmark]: TraceAbstraction took 189010.72ms. Allocated memory was 151.0MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 78.8MB in the beginning and 938.4MB in the end (delta: -859.6MB). Peak memory consumption was 290.5MB. Max. memory is 16.1GB. [2024-06-14 12:43:05,981 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 0.29ms. Allocated memory is still 151.0MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.87ms. Allocated memory is still 151.0MB. Free memory was 91.3MB in the beginning and 58.5MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.58ms. Allocated memory is still 151.0MB. Free memory was 58.5MB in the beginning and 55.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.80ms. Allocated memory is still 151.0MB. Free memory was 55.7MB in the beginning and 52.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 588.40ms. Allocated memory is still 151.0MB. Free memory was 52.3MB in the beginning and 79.6MB in the end (delta: -27.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 189010.72ms. Allocated memory was 151.0MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 78.8MB in the beginning and 938.4MB in the end (delta: -859.6MB). Peak memory consumption was 290.5MB. 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, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 188.9s, OverallIterations: 153, TraceHistogramMax: 1, PathProgramHistogramMax: 42, EmptinessCheckTime: 0.0s, AutomataDifference: 72.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10446 SdHoareTripleChecker+Valid, 34.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8886 mSDsluCounter, 7074 SdHoareTripleChecker+Invalid, 30.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6208 mSDsCounter, 2415 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58607 IncrementalHoareTripleChecker+Invalid, 61022 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2415 mSolverCounterUnsat, 866 mSDtfsCounter, 58607 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1659 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1658 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3535 ImplicationChecksByTransitivity, 42.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2116occurred in iteration=78, InterpolantAutomatonStates: 1478, 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, 0.7s SatisfiabilityAnalysisTime, 114.5s InterpolantComputationTime, 2654 NumberOfCodeBlocks, 2654 NumberOfCodeBlocksAsserted, 153 NumberOfCheckSat, 2501 ConstructedInterpolants, 0 QuantifiedInterpolants, 110289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 153 InterpolantComputations, 153 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! [2024-06-14 12:43:06,012 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