./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.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/mix000.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/mix000.oepc.i ./goblint.2024-05-21_14-57-05.files/protection/mix000.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 11:45:59,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:45:59,199 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:45:59,203 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:45:59,204 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:45:59,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:45:59,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:45:59,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:45:59,240 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:45:59,246 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:45:59,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:45:59,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:45:59,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:45:59,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:45:59,249 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:45:59,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:45:59,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:45:59,250 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:45:59,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:45:59,251 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:45:59,251 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:45:59,251 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:45:59,252 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:45:59,252 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:45:59,252 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:45:59,252 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:45:59,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:45:59,253 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:45:59,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:45:59,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:45:59,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:45:59,255 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:45:59,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:45:59,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:45:59,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:45:59,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:45:59,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:45:59,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:45:59,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:45:59,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:45:59,257 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:45:59,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:45:59,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:45:59,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:45:59,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:45:59,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:45:59,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:45:59,542 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:45:59,542 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:45:59,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix000.oepc.yml/witness.yml [2024-06-14 11:45:59,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:45:59,678 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:45:59,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-14 11:46:00,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:46:01,240 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:46:01,240 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-14 11:46:01,269 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/906895275/0efefabbcb564214b17ab6696f816522/FLAG6bb55ca15 [2024-06-14 11:46:01,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/906895275/0efefabbcb564214b17ab6696f816522 [2024-06-14 11:46:01,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:46:01,285 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:46:01,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:46:01,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:46:01,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:46:01,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:45:59" (1/2) ... [2024-06-14 11:46:01,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495e2aed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01, skipping insertion in model container [2024-06-14 11:46:01,293 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:45:59" (1/2) ... [2024-06-14 11:46:01,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@554313ea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01, skipping insertion in model container [2024-06-14 11:46:01,294 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:46:01" (2/2) ... [2024-06-14 11:46:01,294 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495e2aed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01, skipping insertion in model container [2024-06-14 11:46:01,294 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:46:01" (2/2) ... [2024-06-14 11:46:01,294 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:46:01,367 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:46:01,368 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 11:46:01,368 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 11:46:01,369 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:46:01,369 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-14 11:46:01,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:46:01,756 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:46:01,766 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:46:01,900 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:46:01,939 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:46:01,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01 WrapperNode [2024-06-14 11:46:01,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:46:01,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:46:01,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:46:01,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:46:01,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,017 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-14 11:46:02,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:46:02,019 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:46:02,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:46:02,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:46:02,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,067 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 11:46:02,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,088 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,103 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,110 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:46:02,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:46:02,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:46:02,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:46:02,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:02,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:46:02,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:46:02,186 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 11:46:02,261 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 11:46:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:46:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:46:02,287 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:46:02,287 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:46:02,288 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:46:02,288 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:46:02,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:46:02,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:46:02,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:46:02,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:46:02,290 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 11:46:02,443 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:46:02,446 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:46:02,771 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:46:02,771 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:46:02,977 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:46:02,977 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:46:02,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:46:02 BoogieIcfgContainer [2024-06-14 11:46:02,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:46:02,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:46:02,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:46:02,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:46:02,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:45:59" (1/4) ... [2024-06-14 11:46:02,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23821e5c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:46:02, skipping insertion in model container [2024-06-14 11:46:02,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:46:01" (2/4) ... [2024-06-14 11:46:02,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23821e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:46:02, skipping insertion in model container [2024-06-14 11:46:02,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01" (3/4) ... [2024-06-14 11:46:02,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23821e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:46:02, skipping insertion in model container [2024-06-14 11:46:02,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:46:02" (4/4) ... [2024-06-14 11:46:02,990 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.oepc.i [2024-06-14 11:46:03,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:46:03,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:46:03,007 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:46:03,059 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:46:03,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 11:46:03,125 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 11:46:03,125 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:46:03,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:46:03,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 11:46:03,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 11:46:03,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:46:03,156 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;@39c320e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:46:03,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:46:03,160 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:46:03,160 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 11:46:03,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:46:03,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:03,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:46:03,162 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 11:46:03,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:03,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1460724257, now seen corresponding path program 1 times [2024-06-14 11:46:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:03,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764795187] [2024-06-14 11:46:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:03,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:04,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:04,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764795187] [2024-06-14 11:46:04,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764795187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:04,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:04,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:46:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490789332] [2024-06-14 11:46:04,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:04,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:46:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:04,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:46:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:46:04,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 11:46:04,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:04,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:04,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 11:46:04,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:04,574 INFO L124 PetriNetUnfolderBase]: 162/310 cut-off events. [2024-06-14 11:46:04,575 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 11:46:04,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 310 events. 162/310 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1182 event pairs, 97 based on Foata normal form. 1/304 useless extension candidates. Maximal degree in co-relation 609. Up to 288 conditions per place. [2024-06-14 11:46:04,580 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 11:46:04,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-14 11:46:04,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:46:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:46:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-14 11:46:04,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-14 11:46:04,592 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 55 transitions. [2024-06-14 11:46:04,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-14 11:46:04,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:46:04,597 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 11:46:04,598 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 11:46:04,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 11:46:04,602 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 11:46:04,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:04,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:04,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:04,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:46:04,602 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 11:46:04,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash 698380346, now seen corresponding path program 1 times [2024-06-14 11:46:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:04,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818400430] [2024-06-14 11:46:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:04,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:05,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:05,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818400430] [2024-06-14 11:46:05,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818400430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:05,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:05,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:46:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431144923] [2024-06-14 11:46:05,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:05,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:46:05,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:05,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:46:05,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:46:05,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 11:46:05,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:05,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:05,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 11:46:05,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:05,434 INFO L124 PetriNetUnfolderBase]: 159/307 cut-off events. [2024-06-14 11:46:05,434 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-14 11:46:05,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 307 events. 159/307 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1169 event pairs, 79 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 682. Up to 274 conditions per place. [2024-06-14 11:46:05,439 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 11:46:05,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 163 flow [2024-06-14 11:46:05,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:46:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:46:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-14 11:46:05,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-14 11:46:05,444 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 70 transitions. [2024-06-14 11:46:05,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 163 flow [2024-06-14 11:46:05,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:46:05,449 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 11:46:05,449 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 11:46:05,450 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 11:46:05,450 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 11:46:05,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:05,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:05,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:05,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:46:05,452 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 11:46:05,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:05,452 INFO L85 PathProgramCache]: Analyzing trace with hash 173167718, now seen corresponding path program 1 times [2024-06-14 11:46:05,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:05,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824984416] [2024-06-14 11:46:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:05,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:06,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:06,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824984416] [2024-06-14 11:46:06,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824984416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:06,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:06,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:46:06,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710432528] [2024-06-14 11:46:06,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:06,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:46:06,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:06,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:46:06,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:46:06,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 11:46:06,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:06,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:06,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 11:46:06,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:06,742 INFO L124 PetriNetUnfolderBase]: 156/307 cut-off events. [2024-06-14 11:46:06,742 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-14 11:46:06,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 307 events. 156/307 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1166 event pairs, 61 based on Foata normal form. 2/308 useless extension candidates. Maximal degree in co-relation 750. Up to 260 conditions per place. [2024-06-14 11:46:06,744 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-14 11:46:06,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 211 flow [2024-06-14 11:46:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:46:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:46:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-14 11:46:06,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-14 11:46:06,746 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 85 transitions. [2024-06-14 11:46:06,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 211 flow [2024-06-14 11:46:06,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:46:06,748 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-14 11:46:06,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-14 11:46:06,749 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-14 11:46:06,750 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-14 11:46:06,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:06,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:06,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:06,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:46:06,750 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 11:46:06,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:06,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1089516699, now seen corresponding path program 1 times [2024-06-14 11:46:06,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:06,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800570824] [2024-06-14 11:46:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:06,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:08,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:08,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800570824] [2024-06-14 11:46:08,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800570824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:08,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:08,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:08,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047829549] [2024-06-14 11:46:08,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:08,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:08,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:08,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:08,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:08,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 11:46:08,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 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 11:46:08,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:08,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 11:46:08,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:08,924 INFO L124 PetriNetUnfolderBase]: 181/346 cut-off events. [2024-06-14 11:46:08,924 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-06-14 11:46:08,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 346 events. 181/346 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1257 event pairs, 47 based on Foata normal form. 2/347 useless extension candidates. Maximal degree in co-relation 925. Up to 285 conditions per place. [2024-06-14 11:46:08,928 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2024-06-14 11:46:08,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 294 flow [2024-06-14 11:46:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-14 11:46:08,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48660714285714285 [2024-06-14 11:46:08,933 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 7 states and 109 transitions. [2024-06-14 11:46:08,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 294 flow [2024-06-14 11:46:08,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 274 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:08,937 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 160 flow [2024-06-14 11:46:08,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2024-06-14 11:46:08,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-14 11:46:08,938 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 160 flow [2024-06-14 11:46:08,939 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 11:46:08,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:08,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:08,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:46:08,939 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:46:08,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1533607161, now seen corresponding path program 1 times [2024-06-14 11:46:08,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:08,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882070886] [2024-06-14 11:46:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:08,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:09,463 INFO 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 11:46:09,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882070886] [2024-06-14 11:46:09,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882070886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:09,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:09,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:46:09,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047804204] [2024-06-14 11:46:09,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:09,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:46:09,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:09,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:46:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:46:09,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:09,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:09,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:09,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:09,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:09,746 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-14 11:46:09,746 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-06-14 11:46:09,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 380 events. 211/380 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1334 event pairs, 56 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1145. Up to 368 conditions per place. [2024-06-14 11:46:09,748 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-06-14 11:46:09,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 256 flow [2024-06-14 11:46:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:46:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:46:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2024-06-14 11:46:09,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 11:46:09,750 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 160 flow. Second operand 5 states and 62 transitions. [2024-06-14 11:46:09,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 256 flow [2024-06-14 11:46:09,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 233 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:09,752 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 164 flow [2024-06-14 11:46:09,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-06-14 11:46:09,753 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-14 11:46:09,753 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 164 flow [2024-06-14 11:46:09,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:09,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:09,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:09,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:46:09,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:46:09,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:09,762 INFO L85 PathProgramCache]: Analyzing trace with hash 584721724, now seen corresponding path program 1 times [2024-06-14 11:46:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:09,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741747181] [2024-06-14 11:46:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:09,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:11,445 INFO 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 11:46:11,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:11,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741747181] [2024-06-14 11:46:11,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741747181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:11,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:11,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:11,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782274303] [2024-06-14 11:46:11,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:11,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:11,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:11,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:11,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 11:46:11,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:11,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:11,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 11:46:11,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:11,836 INFO L124 PetriNetUnfolderBase]: 190/355 cut-off events. [2024-06-14 11:46:11,836 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2024-06-14 11:46:11,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 355 events. 190/355 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1242 event pairs, 34 based on Foata normal form. 4/358 useless extension candidates. Maximal degree in co-relation 1101. Up to 272 conditions per place. [2024-06-14 11:46:11,838 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-14 11:46:11,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 314 flow [2024-06-14 11:46:11,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-14 11:46:11,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-06-14 11:46:11,840 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 164 flow. Second operand 8 states and 118 transitions. [2024-06-14 11:46:11,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 314 flow [2024-06-14 11:46:11,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 303 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:11,842 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 171 flow [2024-06-14 11:46:11,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=171, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2024-06-14 11:46:11,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 11:46:11,843 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 171 flow [2024-06-14 11:46:11,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:11,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:11,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:11,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:46:11,844 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 11:46:11,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:11,844 INFO L85 PathProgramCache]: Analyzing trace with hash -297180796, now seen corresponding path program 1 times [2024-06-14 11:46:11,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:11,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009452796] [2024-06-14 11:46:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:11,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:12,435 INFO 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 11:46:12,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:12,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009452796] [2024-06-14 11:46:12,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009452796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:12,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:12,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:12,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704749625] [2024-06-14 11:46:12,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:12,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:12,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:12,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:12,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 171 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 11:46:12,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:12,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:12,818 INFO L124 PetriNetUnfolderBase]: 201/363 cut-off events. [2024-06-14 11:46:12,818 INFO L125 PetriNetUnfolderBase]: For 931/931 co-relation queries the response was YES. [2024-06-14 11:46:12,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 363 events. 201/363 cut-off events. For 931/931 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1227 event pairs, 49 based on Foata normal form. 3/365 useless extension candidates. Maximal degree in co-relation 1194. Up to 342 conditions per place. [2024-06-14 11:46:12,821 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-14 11:46:12,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 283 flow [2024-06-14 11:46:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-14 11:46:12,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:46:12,822 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 171 flow. Second operand 6 states and 72 transitions. [2024-06-14 11:46:12,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 283 flow [2024-06-14 11:46:12,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 253 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:12,825 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 174 flow [2024-06-14 11:46:12,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-14 11:46:12,826 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 11:46:12,826 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 174 flow [2024-06-14 11:46:12,826 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 11:46:12,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:12,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:12,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:46:12,827 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 11:46:12,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash 636740918, now seen corresponding path program 1 times [2024-06-14 11:46:12,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:12,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700151766] [2024-06-14 11:46:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:12,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:13,487 INFO 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 11:46:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:13,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700151766] [2024-06-14 11:46:13,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700151766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:13,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:13,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:13,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447925538] [2024-06-14 11:46:13,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:13,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:13,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:13,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:13,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 174 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 11:46:13,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:13,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:13,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:13,726 INFO L124 PetriNetUnfolderBase]: 204/368 cut-off events. [2024-06-14 11:46:13,726 INFO L125 PetriNetUnfolderBase]: For 1112/1112 co-relation queries the response was YES. [2024-06-14 11:46:13,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 368 events. 204/368 cut-off events. For 1112/1112 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1263 event pairs, 49 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 1247. Up to 340 conditions per place. [2024-06-14 11:46:13,728 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 38 selfloop transitions, 11 changer transitions 0/51 dead transitions. [2024-06-14 11:46:13,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 326 flow [2024-06-14 11:46:13,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-06-14 11:46:13,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 11:46:13,730 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 174 flow. Second operand 6 states and 76 transitions. [2024-06-14 11:46:13,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 326 flow [2024-06-14 11:46:13,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 309 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:13,732 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 204 flow [2024-06-14 11:46:13,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-14 11:46:13,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-14 11:46:13,733 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 204 flow [2024-06-14 11:46:13,734 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 11:46:13,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:13,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:13,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:46:13,734 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 11:46:13,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:13,735 INFO L85 PathProgramCache]: Analyzing trace with hash 293395208, now seen corresponding path program 2 times [2024-06-14 11:46:13,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:13,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117083250] [2024-06-14 11:46:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:13,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:14,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:14,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117083250] [2024-06-14 11:46:14,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117083250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:14,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:14,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:14,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807927228] [2024-06-14 11:46:14,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:14,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:14,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:14,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:14,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:14,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 204 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 11:46:14,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:14,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:14,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:14,677 INFO L124 PetriNetUnfolderBase]: 202/365 cut-off events. [2024-06-14 11:46:14,677 INFO L125 PetriNetUnfolderBase]: For 1376/1376 co-relation queries the response was YES. [2024-06-14 11:46:14,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 365 events. 202/365 cut-off events. For 1376/1376 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1249 event pairs, 48 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1298. Up to 350 conditions per place. [2024-06-14 11:46:14,680 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-14 11:46:14,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 308 flow [2024-06-14 11:46:14,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-14 11:46:14,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 11:46:14,682 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 204 flow. Second operand 6 states and 70 transitions. [2024-06-14 11:46:14,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 308 flow [2024-06-14 11:46:14,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 296 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 11:46:14,688 INFO L231 Difference]: Finished difference. Result has 54 places, 41 transitions, 213 flow [2024-06-14 11:46:14,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=54, PETRI_TRANSITIONS=41} [2024-06-14 11:46:14,689 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-14 11:46:14,690 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 41 transitions, 213 flow [2024-06-14 11:46:14,690 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 11:46:14,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:14,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:14,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:46:14,691 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 11:46:14,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1965014730, now seen corresponding path program 1 times [2024-06-14 11:46:14,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:14,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471970134] [2024-06-14 11:46:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:15,783 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 11:46:15,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:15,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471970134] [2024-06-14 11:46:15,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471970134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:15,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:15,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:15,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349137858] [2024-06-14 11:46:15,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:15,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:15,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:15,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:15,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:15,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:15,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 213 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 11:46:15,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:15,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:15,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:16,025 INFO L124 PetriNetUnfolderBase]: 205/370 cut-off events. [2024-06-14 11:46:16,025 INFO L125 PetriNetUnfolderBase]: For 1723/1723 co-relation queries the response was YES. [2024-06-14 11:46:16,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 370 events. 205/370 cut-off events. For 1723/1723 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1269 event pairs, 48 based on Foata normal form. 1/370 useless extension candidates. Maximal degree in co-relation 1364. Up to 325 conditions per place. [2024-06-14 11:46:16,028 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/59 dead transitions. [2024-06-14 11:46:16,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 399 flow [2024-06-14 11:46:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:16,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 11:46:16,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39732142857142855 [2024-06-14 11:46:16,029 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 213 flow. Second operand 7 states and 89 transitions. [2024-06-14 11:46:16,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 399 flow [2024-06-14 11:46:16,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 378 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:16,033 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 253 flow [2024-06-14 11:46:16,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-14 11:46:16,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-14 11:46:16,034 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 253 flow [2024-06-14 11:46:16,034 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 11:46:16,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:16,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:16,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:46:16,035 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 11:46:16,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1965164677, now seen corresponding path program 1 times [2024-06-14 11:46:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:16,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658729764] [2024-06-14 11:46:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:16,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:16,869 INFO 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 11:46:16,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:16,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658729764] [2024-06-14 11:46:16,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658729764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:16,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:16,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:16,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837410147] [2024-06-14 11:46:16,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:16,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:16,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:16,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:16,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 253 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 11:46:16,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:16,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:16,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:17,149 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-14 11:46:17,150 INFO L125 PetriNetUnfolderBase]: For 2350/2350 co-relation queries the response was YES. [2024-06-14 11:46:17,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 401 events. 224/401 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1390 event pairs, 51 based on Foata normal form. 3/403 useless extension candidates. Maximal degree in co-relation 1560. Up to 346 conditions per place. [2024-06-14 11:46:17,153 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-14 11:46:17,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 461 flow [2024-06-14 11:46:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-14 11:46:17,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:46:17,154 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 253 flow. Second operand 7 states and 91 transitions. [2024-06-14 11:46:17,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 461 flow [2024-06-14 11:46:17,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 438 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:17,159 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 304 flow [2024-06-14 11:46:17,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-14 11:46:17,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-14 11:46:17,160 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 304 flow [2024-06-14 11:46:17,160 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 11:46:17,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:17,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:17,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:46:17,161 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 11:46:17,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:17,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2130501046, now seen corresponding path program 2 times [2024-06-14 11:46:17,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:17,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654787792] [2024-06-14 11:46:17,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:17,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:18,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:18,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654787792] [2024-06-14 11:46:18,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654787792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:18,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:18,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:18,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577108937] [2024-06-14 11:46:18,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:18,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:18,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:18,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:18,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:18,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 304 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 11:46:18,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:18,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:18,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:18,504 INFO L124 PetriNetUnfolderBase]: 227/406 cut-off events. [2024-06-14 11:46:18,505 INFO L125 PetriNetUnfolderBase]: For 2708/2708 co-relation queries the response was YES. [2024-06-14 11:46:18,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 406 events. 227/406 cut-off events. For 2708/2708 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1415 event pairs, 50 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1703. Up to 376 conditions per place. [2024-06-14 11:46:18,508 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-14 11:46:18,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 462 flow [2024-06-14 11:46:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-14 11:46:18,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:46:18,510 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 304 flow. Second operand 7 states and 84 transitions. [2024-06-14 11:46:18,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 462 flow [2024-06-14 11:46:18,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 451 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 11:46:18,519 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 340 flow [2024-06-14 11:46:18,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-06-14 11:46:18,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 11:46:18,521 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 340 flow [2024-06-14 11:46:18,521 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 11:46:18,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:18,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:18,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:46:18,522 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 11:46:18,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:18,522 INFO L85 PathProgramCache]: Analyzing trace with hash 527668485, now seen corresponding path program 2 times [2024-06-14 11:46:18,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:18,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49519139] [2024-06-14 11:46:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:18,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:19,253 INFO 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 11:46:19,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:19,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49519139] [2024-06-14 11:46:19,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49519139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:19,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:19,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:19,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040055013] [2024-06-14 11:46:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:19,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:19,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:19,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:19,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:19,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:19,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 340 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 11:46:19,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:19,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:19,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:19,631 INFO L124 PetriNetUnfolderBase]: 236/421 cut-off events. [2024-06-14 11:46:19,631 INFO L125 PetriNetUnfolderBase]: For 3371/3371 co-relation queries the response was YES. [2024-06-14 11:46:19,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 421 events. 236/421 cut-off events. For 3371/3371 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1478 event pairs, 49 based on Foata normal form. 3/423 useless extension candidates. Maximal degree in co-relation 1818. Up to 397 conditions per place. [2024-06-14 11:46:19,635 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 52 selfloop transitions, 10 changer transitions 0/64 dead transitions. [2024-06-14 11:46:19,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 500 flow [2024-06-14 11:46:19,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-14 11:46:19,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-14 11:46:19,636 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 340 flow. Second operand 7 states and 81 transitions. [2024-06-14 11:46:19,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 500 flow [2024-06-14 11:46:19,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 473 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:19,641 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 356 flow [2024-06-14 11:46:19,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2024-06-14 11:46:19,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-14 11:46:19,643 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 356 flow [2024-06-14 11:46:19,643 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 11:46:19,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:19,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:19,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:46:19,644 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 11:46:19,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash -408967995, now seen corresponding path program 3 times [2024-06-14 11:46:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:19,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491469012] [2024-06-14 11:46:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:19,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:20,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:20,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491469012] [2024-06-14 11:46:20,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491469012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:20,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:20,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590489923] [2024-06-14 11:46:20,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:20,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:20,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:20,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:20,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:20,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:20,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 356 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 11:46:20,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:20,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:20,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:20,711 INFO L124 PetriNetUnfolderBase]: 230/412 cut-off events. [2024-06-14 11:46:20,711 INFO L125 PetriNetUnfolderBase]: For 3671/3671 co-relation queries the response was YES. [2024-06-14 11:46:20,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 412 events. 230/412 cut-off events. For 3671/3671 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1441 event pairs, 47 based on Foata normal form. 3/414 useless extension candidates. Maximal degree in co-relation 1797. Up to 376 conditions per place. [2024-06-14 11:46:20,715 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 51 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2024-06-14 11:46:20,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 512 flow [2024-06-14 11:46:20,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-14 11:46:20,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-14 11:46:20,716 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 356 flow. Second operand 7 states and 85 transitions. [2024-06-14 11:46:20,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 512 flow [2024-06-14 11:46:20,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 485 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:20,722 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 360 flow [2024-06-14 11:46:20,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-14 11:46:20,723 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-14 11:46:20,723 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 360 flow [2024-06-14 11:46:20,723 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 11:46:20,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:20,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:20,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:46:20,724 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 11:46:20,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:20,725 INFO L85 PathProgramCache]: Analyzing trace with hash -843722950, now seen corresponding path program 3 times [2024-06-14 11:46:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:20,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13228154] [2024-06-14 11:46:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:21,590 INFO 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 11:46:21,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:21,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13228154] [2024-06-14 11:46:21,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13228154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:21,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:21,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:21,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841102900] [2024-06-14 11:46:21,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:21,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:21,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:21,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:21,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:21,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 360 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 11:46:21,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:21,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:21,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:21,850 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-14 11:46:21,850 INFO L125 PetriNetUnfolderBase]: For 3863/3863 co-relation queries the response was YES. [2024-06-14 11:46:21,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 409 events. 228/409 cut-off events. For 3863/3863 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1435 event pairs, 47 based on Foata normal form. 1/409 useless extension candidates. Maximal degree in co-relation 1813. Up to 391 conditions per place. [2024-06-14 11:46:21,853 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2024-06-14 11:46:21,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 62 transitions, 496 flow [2024-06-14 11:46:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:21,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 11:46:21,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-14 11:46:21,855 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 360 flow. Second operand 7 states and 79 transitions. [2024-06-14 11:46:21,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 62 transitions, 496 flow [2024-06-14 11:46:21,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 453 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:21,860 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 342 flow [2024-06-14 11:46:21,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=342, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-06-14 11:46:21,861 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-14 11:46:21,861 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 342 flow [2024-06-14 11:46:21,861 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 11:46:21,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:21,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:21,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:46:21,862 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 11:46:21,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash -21190711, now seen corresponding path program 1 times [2024-06-14 11:46:21,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:21,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679655673] [2024-06-14 11:46:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:21,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:22,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:22,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679655673] [2024-06-14 11:46:22,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679655673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:22,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:22,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399129211] [2024-06-14 11:46:22,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:22,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:22,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:22,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:22,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 342 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 11:46:22,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:22,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:22,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:23,302 INFO L124 PetriNetUnfolderBase]: 234/419 cut-off events. [2024-06-14 11:46:23,302 INFO L125 PetriNetUnfolderBase]: For 4399/4399 co-relation queries the response was YES. [2024-06-14 11:46:23,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 419 events. 234/419 cut-off events. For 4399/4399 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1490 event pairs, 46 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 1845. Up to 366 conditions per place. [2024-06-14 11:46:23,306 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 60 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-14 11:46:23,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 75 transitions, 546 flow [2024-06-14 11:46:23,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 11:46:23,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-14 11:46:23,307 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 342 flow. Second operand 8 states and 99 transitions. [2024-06-14 11:46:23,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 75 transitions, 546 flow [2024-06-14 11:46:23,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 511 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:23,314 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 355 flow [2024-06-14 11:46:23,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=355, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-14 11:46:23,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-14 11:46:23,315 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 355 flow [2024-06-14 11:46:23,315 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 11:46:23,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:23,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:46:23,316 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 11:46:23,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash 785915425, now seen corresponding path program 1 times [2024-06-14 11:46:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:23,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143964229] [2024-06-14 11:46:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:23,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:24,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:24,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143964229] [2024-06-14 11:46:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143964229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:24,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:24,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:24,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781109980] [2024-06-14 11:46:24,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:24,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:24,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:24,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:24,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:24,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 355 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 11:46:24,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:24,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:24,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:24,709 INFO L124 PetriNetUnfolderBase]: 247/440 cut-off events. [2024-06-14 11:46:24,709 INFO L125 PetriNetUnfolderBase]: For 5101/5101 co-relation queries the response was YES. [2024-06-14 11:46:24,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 440 events. 247/440 cut-off events. For 5101/5101 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1607 event pairs, 47 based on Foata normal form. 1/440 useless extension candidates. Maximal degree in co-relation 2003. Up to 331 conditions per place. [2024-06-14 11:46:24,713 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 52 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-14 11:46:24,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 609 flow [2024-06-14 11:46:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 11:46:24,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41015625 [2024-06-14 11:46:24,714 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 355 flow. Second operand 8 states and 105 transitions. [2024-06-14 11:46:24,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 609 flow [2024-06-14 11:46:24,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 579 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:24,720 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 425 flow [2024-06-14 11:46:24,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=425, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-06-14 11:46:24,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-14 11:46:24,721 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 425 flow [2024-06-14 11:46:24,721 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 11:46:24,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:24,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:24,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:46:24,722 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 11:46:24,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash 785915239, now seen corresponding path program 2 times [2024-06-14 11:46:24,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:24,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051657356] [2024-06-14 11:46:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:25,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:25,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051657356] [2024-06-14 11:46:25,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051657356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:25,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:25,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:25,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098998903] [2024-06-14 11:46:25,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:25,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:25,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:25,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:25,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:25,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:25,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 425 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 11:46:25,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:25,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:25,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:25,993 INFO L124 PetriNetUnfolderBase]: 250/445 cut-off events. [2024-06-14 11:46:25,993 INFO L125 PetriNetUnfolderBase]: For 5852/5852 co-relation queries the response was YES. [2024-06-14 11:46:25,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 445 events. 250/445 cut-off events. For 5852/5852 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1620 event pairs, 48 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 2188. Up to 379 conditions per place. [2024-06-14 11:46:25,997 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 58 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-14 11:46:25,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 693 flow [2024-06-14 11:46:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 11:46:25,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 11:46:25,998 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 425 flow. Second operand 8 states and 100 transitions. [2024-06-14 11:46:25,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 693 flow [2024-06-14 11:46:26,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 663 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:26,007 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 494 flow [2024-06-14 11:46:26,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=494, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-06-14 11:46:26,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-14 11:46:26,008 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 494 flow [2024-06-14 11:46:26,009 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 11:46:26,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:26,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:26,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:46:26,009 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 11:46:26,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:26,010 INFO L85 PathProgramCache]: Analyzing trace with hash 790557055, now seen corresponding path program 2 times [2024-06-14 11:46:26,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:26,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184381669] [2024-06-14 11:46:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:26,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:26,986 INFO 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 11:46:26,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184381669] [2024-06-14 11:46:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184381669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:26,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:26,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849763124] [2024-06-14 11:46:26,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:26,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:26,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:26,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:26,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:27,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 494 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 11:46:27,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:27,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:27,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:27,373 INFO L124 PetriNetUnfolderBase]: 268/474 cut-off events. [2024-06-14 11:46:27,374 INFO L125 PetriNetUnfolderBase]: For 7022/7022 co-relation queries the response was YES. [2024-06-14 11:46:27,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2500 conditions, 474 events. 268/474 cut-off events. For 7022/7022 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1751 event pairs, 47 based on Foata normal form. 1/474 useless extension candidates. Maximal degree in co-relation 2459. Up to 396 conditions per place. [2024-06-14 11:46:27,378 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 65 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2024-06-14 11:46:27,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 90 transitions, 787 flow [2024-06-14 11:46:27,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:27,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 11:46:27,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:46:27,380 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 494 flow. Second operand 8 states and 104 transitions. [2024-06-14 11:46:27,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 90 transitions, 787 flow [2024-06-14 11:46:27,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 760 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:27,393 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 562 flow [2024-06-14 11:46:27,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=562, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-14 11:46:27,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-14 11:46:27,394 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 562 flow [2024-06-14 11:46:27,394 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 11:46:27,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:27,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:27,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:46:27,395 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 11:46:27,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:27,395 INFO L85 PathProgramCache]: Analyzing trace with hash 790556869, now seen corresponding path program 3 times [2024-06-14 11:46:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:27,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716895587] [2024-06-14 11:46:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:27,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:28,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:28,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716895587] [2024-06-14 11:46:28,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716895587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:28,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:28,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:28,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316586570] [2024-06-14 11:46:28,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:28,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:28,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:28,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:28,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:28,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:28,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 562 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:28,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:28,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:28,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:28,669 INFO L124 PetriNetUnfolderBase]: 274/484 cut-off events. [2024-06-14 11:46:28,669 INFO L125 PetriNetUnfolderBase]: For 8041/8041 co-relation queries the response was YES. [2024-06-14 11:46:28,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 484 events. 274/484 cut-off events. For 8041/8041 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1796 event pairs, 51 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2630. Up to 448 conditions per place. [2024-06-14 11:46:28,674 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-14 11:46:28,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 794 flow [2024-06-14 11:46:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:28,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 11:46:28,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:46:28,675 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 562 flow. Second operand 8 states and 94 transitions. [2024-06-14 11:46:28,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 794 flow [2024-06-14 11:46:28,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 771 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:28,686 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 611 flow [2024-06-14 11:46:28,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-14 11:46:28,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-14 11:46:28,687 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 611 flow [2024-06-14 11:46:28,687 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 11:46:28,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:28,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:28,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:46:28,688 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 11:46:28,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash 2022695997, now seen corresponding path program 3 times [2024-06-14 11:46:28,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:28,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461526414] [2024-06-14 11:46:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:28,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:29,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:29,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461526414] [2024-06-14 11:46:29,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461526414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:29,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:29,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485076477] [2024-06-14 11:46:29,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:29,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:29,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:29,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:29,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 611 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 11:46:29,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:29,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:29,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:30,010 INFO L124 PetriNetUnfolderBase]: 268/475 cut-off events. [2024-06-14 11:46:30,010 INFO L125 PetriNetUnfolderBase]: For 8489/8489 co-relation queries the response was YES. [2024-06-14 11:46:30,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2671 conditions, 475 events. 268/475 cut-off events. For 8489/8489 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1767 event pairs, 47 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2625. Up to 407 conditions per place. [2024-06-14 11:46:30,015 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 20 changer transitions 0/92 dead transitions. [2024-06-14 11:46:30,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 839 flow [2024-06-14 11:46:30,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:30,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 11:46:30,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39453125 [2024-06-14 11:46:30,017 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 611 flow. Second operand 8 states and 101 transitions. [2024-06-14 11:46:30,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 839 flow [2024-06-14 11:46:30,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 791 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:30,028 INFO L231 Difference]: Finished difference. Result has 92 places, 76 transitions, 609 flow [2024-06-14 11:46:30,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=609, PETRI_PLACES=92, PETRI_TRANSITIONS=76} [2024-06-14 11:46:30,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-14 11:46:30,029 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 76 transitions, 609 flow [2024-06-14 11:46:30,029 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 11:46:30,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:30,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:30,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:46:30,030 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 11:46:30,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:30,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1515023327, now seen corresponding path program 4 times [2024-06-14 11:46:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:30,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975187371] [2024-06-14 11:46:30,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:30,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:30,910 INFO 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 11:46:30,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:30,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975187371] [2024-06-14 11:46:30,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975187371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:30,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:30,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:30,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487734295] [2024-06-14 11:46:30,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:30,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:30,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:30,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:30,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:30,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:30,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 76 transitions, 609 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 11:46:30,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:30,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:30,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:31,219 INFO L124 PetriNetUnfolderBase]: 271/480 cut-off events. [2024-06-14 11:46:31,219 INFO L125 PetriNetUnfolderBase]: For 8861/8861 co-relation queries the response was YES. [2024-06-14 11:46:31,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749 conditions, 480 events. 271/480 cut-off events. For 8861/8861 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1789 event pairs, 46 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2702. Up to 417 conditions per place. [2024-06-14 11:46:31,222 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 69 selfloop transitions, 19 changer transitions 0/90 dead transitions. [2024-06-14 11:46:31,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 90 transitions, 875 flow [2024-06-14 11:46:31,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:31,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 11:46:31,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:46:31,224 INFO L175 Difference]: Start difference. First operand has 92 places, 76 transitions, 609 flow. Second operand 8 states and 96 transitions. [2024-06-14 11:46:31,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 90 transitions, 875 flow [2024-06-14 11:46:31,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 90 transitions, 830 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:31,238 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 623 flow [2024-06-14 11:46:31,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=623, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2024-06-14 11:46:31,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 11:46:31,238 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 623 flow [2024-06-14 11:46:31,239 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 11:46:31,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:31,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:31,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:46:31,239 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 11:46:31,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:31,240 INFO L85 PathProgramCache]: Analyzing trace with hash 963284095, now seen corresponding path program 5 times [2024-06-14 11:46:31,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:31,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767205347] [2024-06-14 11:46:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:31,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:32,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:32,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767205347] [2024-06-14 11:46:32,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767205347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:32,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:32,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:32,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654500438] [2024-06-14 11:46:32,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:32,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:32,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:32,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 623 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 11:46:32,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:32,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:32,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:32,442 INFO L124 PetriNetUnfolderBase]: 280/495 cut-off events. [2024-06-14 11:46:32,442 INFO L125 PetriNetUnfolderBase]: For 10137/10137 co-relation queries the response was YES. [2024-06-14 11:46:32,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2857 conditions, 495 events. 280/495 cut-off events. For 10137/10137 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1865 event pairs, 49 based on Foata normal form. 3/497 useless extension candidates. Maximal degree in co-relation 2809. Up to 460 conditions per place. [2024-06-14 11:46:32,447 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 77 selfloop transitions, 13 changer transitions 0/92 dead transitions. [2024-06-14 11:46:32,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 92 transitions, 864 flow [2024-06-14 11:46:32,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:32,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 11:46:32,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:46:32,449 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 623 flow. Second operand 8 states and 92 transitions. [2024-06-14 11:46:32,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 92 transitions, 864 flow [2024-06-14 11:46:32,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 771 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 11:46:32,464 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 599 flow [2024-06-14 11:46:32,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=599, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-06-14 11:46:32,464 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 11:46:32,465 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 599 flow [2024-06-14 11:46:32,465 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 11:46:32,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:32,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:32,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:46:32,465 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 11:46:32,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash 206894765, now seen corresponding path program 6 times [2024-06-14 11:46:32,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:32,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206190781] [2024-06-14 11:46:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:32,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:33,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:33,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206190781] [2024-06-14 11:46:33,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206190781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:33,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:33,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:33,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396787386] [2024-06-14 11:46:33,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:33,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:33,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:33,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:33,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:33,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:33,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 599 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 11:46:33,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:33,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:33,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:33,640 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-14 11:46:33,640 INFO L125 PetriNetUnfolderBase]: For 10204/10204 co-relation queries the response was YES. [2024-06-14 11:46:33,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 486 events. 274/486 cut-off events. For 10204/10204 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1815 event pairs, 46 based on Foata normal form. 3/488 useless extension candidates. Maximal degree in co-relation 2635. Up to 439 conditions per place. [2024-06-14 11:46:33,645 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 76 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-14 11:46:33,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 823 flow [2024-06-14 11:46:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 11:46:33,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:46:33,648 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 599 flow. Second operand 8 states and 96 transitions. [2024-06-14 11:46:33,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 823 flow [2024-06-14 11:46:33,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 795 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:33,663 INFO L231 Difference]: Finished difference. Result has 95 places, 81 transitions, 609 flow [2024-06-14 11:46:33,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=609, PETRI_PLACES=95, PETRI_TRANSITIONS=81} [2024-06-14 11:46:33,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-14 11:46:33,663 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 81 transitions, 609 flow [2024-06-14 11:46:33,664 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 11:46:33,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:33,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:33,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:46:33,664 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 11:46:33,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash 215465893, now seen corresponding path program 1 times [2024-06-14 11:46:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:33,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269866536] [2024-06-14 11:46:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:33,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:34,376 INFO 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 11:46:34,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:34,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269866536] [2024-06-14 11:46:34,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269866536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:34,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:34,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:34,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165790375] [2024-06-14 11:46:34,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:34,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:34,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:34,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:34,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:34,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 81 transitions, 609 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 11:46:34,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:34,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:34,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:34,695 INFO L124 PetriNetUnfolderBase]: 270/480 cut-off events. [2024-06-14 11:46:34,695 INFO L125 PetriNetUnfolderBase]: For 10270/10270 co-relation queries the response was YES. [2024-06-14 11:46:34,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 480 events. 270/480 cut-off events. For 10270/10270 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1789 event pairs, 47 based on Foata normal form. 2/481 useless extension candidates. Maximal degree in co-relation 2616. Up to 451 conditions per place. [2024-06-14 11:46:34,698 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 79 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-06-14 11:46:34,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 93 transitions, 829 flow [2024-06-14 11:46:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-14 11:46:34,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 11:46:34,699 INFO L175 Difference]: Start difference. First operand has 95 places, 81 transitions, 609 flow. Second operand 8 states and 90 transitions. [2024-06-14 11:46:34,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 93 transitions, 829 flow [2024-06-14 11:46:34,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 782 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:34,710 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 611 flow [2024-06-14 11:46:34,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2024-06-14 11:46:34,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 11:46:34,711 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 611 flow [2024-06-14 11:46:34,712 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 11:46:34,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:34,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:34,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:46:34,713 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 11:46:34,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:34,713 INFO L85 PathProgramCache]: Analyzing trace with hash -385606921, now seen corresponding path program 4 times [2024-06-14 11:46:34,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:34,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311190346] [2024-06-14 11:46:34,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:35,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:35,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311190346] [2024-06-14 11:46:35,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311190346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:35,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:35,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951339819] [2024-06-14 11:46:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:35,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:35,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:35,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:35,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:35,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 611 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 11:46:35,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:35,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:35,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:35,839 INFO L124 PetriNetUnfolderBase]: 271/482 cut-off events. [2024-06-14 11:46:35,839 INFO L125 PetriNetUnfolderBase]: For 10692/10692 co-relation queries the response was YES. [2024-06-14 11:46:35,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 482 events. 271/482 cut-off events. For 10692/10692 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1801 event pairs, 49 based on Foata normal form. 2/483 useless extension candidates. Maximal degree in co-relation 2625. Up to 458 conditions per place. [2024-06-14 11:46:35,843 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 79 selfloop transitions, 13 changer transitions 0/94 dead transitions. [2024-06-14 11:46:35,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 94 transitions, 841 flow [2024-06-14 11:46:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:35,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 11:46:35,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-14 11:46:35,848 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 611 flow. Second operand 8 states and 89 transitions. [2024-06-14 11:46:35,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 94 transitions, 841 flow [2024-06-14 11:46:35,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 801 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:35,860 INFO L231 Difference]: Finished difference. Result has 98 places, 85 transitions, 629 flow [2024-06-14 11:46:35,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=629, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2024-06-14 11:46:35,860 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-14 11:46:35,861 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 629 flow [2024-06-14 11:46:35,861 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 11:46:35,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:35,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:35,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:46:35,861 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 11:46:35,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:35,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1384532347, now seen corresponding path program 1 times [2024-06-14 11:46:35,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:35,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753927521] [2024-06-14 11:46:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:35,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:36,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:36,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753927521] [2024-06-14 11:46:36,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753927521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:36,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:36,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:36,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466509608] [2024-06-14 11:46:36,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:36,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:36,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:36,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:36,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:37,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:37,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 629 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 11:46:37,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:37,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:37,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:37,316 INFO L124 PetriNetUnfolderBase]: 268/477 cut-off events. [2024-06-14 11:46:37,316 INFO L125 PetriNetUnfolderBase]: For 10891/10891 co-relation queries the response was YES. [2024-06-14 11:46:37,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 477 events. 268/477 cut-off events. For 10891/10891 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1756 event pairs, 46 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2597. Up to 450 conditions per place. [2024-06-14 11:46:37,320 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 82 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-06-14 11:46:37,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 95 transitions, 837 flow [2024-06-14 11:46:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:37,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 11:46:37,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:46:37,324 INFO L175 Difference]: Start difference. First operand has 98 places, 85 transitions, 629 flow. Second operand 8 states and 88 transitions. [2024-06-14 11:46:37,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 95 transitions, 837 flow [2024-06-14 11:46:37,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 95 transitions, 795 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:37,335 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 613 flow [2024-06-14 11:46:37,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=613, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-06-14 11:46:37,335 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-14 11:46:37,335 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 613 flow [2024-06-14 11:46:37,336 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 11:46:37,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:37,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:37,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:46:37,336 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 11:46:37,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1868749770, now seen corresponding path program 1 times [2024-06-14 11:46:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:37,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315565525] [2024-06-14 11:46:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:38,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:38,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315565525] [2024-06-14 11:46:38,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315565525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:38,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:38,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861143705] [2024-06-14 11:46:38,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:38,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:38,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:38,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:38,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:38,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 613 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 11:46:38,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:38,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:38,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:38,662 INFO L124 PetriNetUnfolderBase]: 274/487 cut-off events. [2024-06-14 11:46:38,662 INFO L125 PetriNetUnfolderBase]: For 11654/11654 co-relation queries the response was YES. [2024-06-14 11:46:38,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 487 events. 274/487 cut-off events. For 11654/11654 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1824 event pairs, 47 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 2656. Up to 426 conditions per place. [2024-06-14 11:46:38,671 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 16 changer transitions 0/106 dead transitions. [2024-06-14 11:46:38,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 889 flow [2024-06-14 11:46:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 11:46:38,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-14 11:46:38,673 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 613 flow. Second operand 9 states and 109 transitions. [2024-06-14 11:46:38,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 889 flow [2024-06-14 11:46:38,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 106 transitions, 863 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:38,693 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 647 flow [2024-06-14 11:46:38,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=647, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2024-06-14 11:46:38,696 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-14 11:46:38,696 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 647 flow [2024-06-14 11:46:38,696 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 11:46:38,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:38,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:38,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:46:38,697 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 11:46:38,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:38,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1406430428, now seen corresponding path program 2 times [2024-06-14 11:46:38,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:38,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827596801] [2024-06-14 11:46:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:38,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:39,556 INFO 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 11:46:39,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:39,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827596801] [2024-06-14 11:46:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827596801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:39,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:39,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:39,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663400336] [2024-06-14 11:46:39,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:39,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:39,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:39,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:39,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:39,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:39,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 647 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 11:46:39,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:39,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:39,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:39,830 INFO L124 PetriNetUnfolderBase]: 311/547 cut-off events. [2024-06-14 11:46:39,830 INFO L125 PetriNetUnfolderBase]: For 14953/14953 co-relation queries the response was YES. [2024-06-14 11:46:39,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3224 conditions, 547 events. 311/547 cut-off events. For 14953/14953 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2146 event pairs, 46 based on Foata normal form. 2/548 useless extension candidates. Maximal degree in co-relation 3172. Up to 302 conditions per place. [2024-06-14 11:46:39,834 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 73 selfloop transitions, 44 changer transitions 0/119 dead transitions. [2024-06-14 11:46:39,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 119 transitions, 1163 flow [2024-06-14 11:46:39,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 11:46:39,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-14 11:46:39,835 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 647 flow. Second operand 9 states and 123 transitions. [2024-06-14 11:46:39,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 119 transitions, 1163 flow [2024-06-14 11:46:39,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 119 transitions, 1121 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:39,849 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 840 flow [2024-06-14 11:46:39,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=840, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-06-14 11:46:39,850 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-14 11:46:39,850 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 840 flow [2024-06-14 11:46:39,850 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 11:46:39,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:39,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:39,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:46:39,851 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 11:46:39,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:39,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1406430583, now seen corresponding path program 1 times [2024-06-14 11:46:39,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:39,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259887652] [2024-06-14 11:46:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:39,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:40,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259887652] [2024-06-14 11:46:40,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259887652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:40,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:40,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:40,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853375170] [2024-06-14 11:46:40,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:40,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:40,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:40,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:40,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:41,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:41,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 840 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 11:46:41,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:41,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:41,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:41,301 INFO L124 PetriNetUnfolderBase]: 308/542 cut-off events. [2024-06-14 11:46:41,301 INFO L125 PetriNetUnfolderBase]: For 15708/15708 co-relation queries the response was YES. [2024-06-14 11:46:41,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 542 events. 308/542 cut-off events. For 15708/15708 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2097 event pairs, 57 based on Foata normal form. 1/542 useless extension candidates. Maximal degree in co-relation 3338. Up to 473 conditions per place. [2024-06-14 11:46:41,306 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 84 selfloop transitions, 26 changer transitions 0/112 dead transitions. [2024-06-14 11:46:41,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 112 transitions, 1111 flow [2024-06-14 11:46:41,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:41,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:46:41,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:46:41,307 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 840 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:46:41,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 112 transitions, 1111 flow [2024-06-14 11:46:41,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 112 transitions, 1050 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:41,337 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 853 flow [2024-06-14 11:46:41,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=853, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-14 11:46:41,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-14 11:46:41,338 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 853 flow [2024-06-14 11:46:41,338 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 11:46:41,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:41,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:41,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 11:46:41,339 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 11:46:41,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1865025120, now seen corresponding path program 3 times [2024-06-14 11:46:41,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:41,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689548961] [2024-06-14 11:46:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:41,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:42,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:42,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689548961] [2024-06-14 11:46:42,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689548961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:42,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:42,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:42,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605289885] [2024-06-14 11:46:42,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:42,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:42,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:42,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:42,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:42,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:42,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 853 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 11:46:42,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:42,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:42,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:42,640 INFO L124 PetriNetUnfolderBase]: 304/536 cut-off events. [2024-06-14 11:46:42,641 INFO L125 PetriNetUnfolderBase]: For 16096/16096 co-relation queries the response was YES. [2024-06-14 11:46:42,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3303 conditions, 536 events. 304/536 cut-off events. For 16096/16096 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2093 event pairs, 45 based on Foata normal form. 2/537 useless extension candidates. Maximal degree in co-relation 3247. Up to 296 conditions per place. [2024-06-14 11:46:42,644 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 69 selfloop transitions, 47 changer transitions 0/118 dead transitions. [2024-06-14 11:46:42,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 1205 flow [2024-06-14 11:46:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 11:46:42,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-14 11:46:42,645 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 853 flow. Second operand 9 states and 121 transitions. [2024-06-14 11:46:42,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 1205 flow [2024-06-14 11:46:42,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 118 transitions, 1122 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:42,667 INFO L231 Difference]: Finished difference. Result has 114 places, 97 transitions, 869 flow [2024-06-14 11:46:42,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=869, PETRI_PLACES=114, PETRI_TRANSITIONS=97} [2024-06-14 11:46:42,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-14 11:46:42,668 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 97 transitions, 869 flow [2024-06-14 11:46:42,668 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 11:46:42,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:42,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:42,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 11:46:42,669 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 11:46:42,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1865024903, now seen corresponding path program 1 times [2024-06-14 11:46:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:42,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175812679] [2024-06-14 11:46:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:42,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:44,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175812679] [2024-06-14 11:46:44,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175812679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:44,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:44,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:44,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814690658] [2024-06-14 11:46:44,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:44,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:44,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:44,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:44,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:44,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:44,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 97 transitions, 869 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 11:46:44,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:44,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:44,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:44,477 INFO L124 PetriNetUnfolderBase]: 361/633 cut-off events. [2024-06-14 11:46:44,477 INFO L125 PetriNetUnfolderBase]: For 18570/18570 co-relation queries the response was YES. [2024-06-14 11:46:44,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 633 events. 361/633 cut-off events. For 18570/18570 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2591 event pairs, 67 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 3858. Up to 499 conditions per place. [2024-06-14 11:46:44,480 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 37 changer transitions 0/137 dead transitions. [2024-06-14 11:46:44,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 137 transitions, 1480 flow [2024-06-14 11:46:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:46:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:46:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 11:46:44,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 11:46:44,482 INFO L175 Difference]: Start difference. First operand has 114 places, 97 transitions, 869 flow. Second operand 10 states and 118 transitions. [2024-06-14 11:46:44,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 137 transitions, 1480 flow [2024-06-14 11:46:44,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 137 transitions, 1355 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 11:46:44,511 INFO L231 Difference]: Finished difference. Result has 121 places, 117 transitions, 1097 flow [2024-06-14 11:46:44,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1097, PETRI_PLACES=121, PETRI_TRANSITIONS=117} [2024-06-14 11:46:44,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-14 11:46:44,512 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 117 transitions, 1097 flow [2024-06-14 11:46:44,512 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 11:46:44,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:44,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:44,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 11:46:44,513 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 11:46:44,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1720932780, now seen corresponding path program 4 times [2024-06-14 11:46:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:44,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110132774] [2024-06-14 11:46:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:44,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:45,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:45,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110132774] [2024-06-14 11:46:45,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110132774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:45,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:45,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:45,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73716150] [2024-06-14 11:46:45,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:45,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:45,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:45,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:45,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:45,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 117 transitions, 1097 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 11:46:45,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:45,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:45,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:45,956 INFO L124 PetriNetUnfolderBase]: 370/647 cut-off events. [2024-06-14 11:46:45,957 INFO L125 PetriNetUnfolderBase]: For 20309/20311 co-relation queries the response was YES. [2024-06-14 11:46:45,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 647 events. 370/647 cut-off events. For 20309/20311 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2673 event pairs, 48 based on Foata normal form. 5/651 useless extension candidates. Maximal degree in co-relation 4060. Up to 536 conditions per place. [2024-06-14 11:46:45,961 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 30 changer transitions 0/136 dead transitions. [2024-06-14 11:46:45,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 136 transitions, 1433 flow [2024-06-14 11:46:45,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 11:46:45,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 11:46:45,962 INFO L175 Difference]: Start difference. First operand has 121 places, 117 transitions, 1097 flow. Second operand 9 states and 112 transitions. [2024-06-14 11:46:45,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 136 transitions, 1433 flow [2024-06-14 11:46:46,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 136 transitions, 1415 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-14 11:46:46,002 INFO L231 Difference]: Finished difference. Result has 129 places, 120 transitions, 1180 flow [2024-06-14 11:46:46,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1180, PETRI_PLACES=129, PETRI_TRANSITIONS=120} [2024-06-14 11:46:46,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-14 11:46:46,003 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 120 transitions, 1180 flow [2024-06-14 11:46:46,003 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 11:46:46,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:46,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:46,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 11:46:46,003 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 11:46:46,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1720932563, now seen corresponding path program 2 times [2024-06-14 11:46:46,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:46,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373263085] [2024-06-14 11:46:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:46,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:47,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:47,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373263085] [2024-06-14 11:46:47,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373263085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:47,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:47,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:47,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352392967] [2024-06-14 11:46:47,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:47,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:47,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:47,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:47,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 120 transitions, 1180 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 11:46:47,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:47,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:47,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:47,644 INFO L124 PetriNetUnfolderBase]: 382/667 cut-off events. [2024-06-14 11:46:47,645 INFO L125 PetriNetUnfolderBase]: For 22361/22363 co-relation queries the response was YES. [2024-06-14 11:46:47,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 667 events. 382/667 cut-off events. For 22361/22363 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2770 event pairs, 50 based on Foata normal form. 6/672 useless extension candidates. Maximal degree in co-relation 4309. Up to 561 conditions per place. [2024-06-14 11:46:47,649 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 31 changer transitions 0/140 dead transitions. [2024-06-14 11:46:47,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 140 transitions, 1540 flow [2024-06-14 11:46:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 11:46:47,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 11:46:47,650 INFO L175 Difference]: Start difference. First operand has 129 places, 120 transitions, 1180 flow. Second operand 9 states and 111 transitions. [2024-06-14 11:46:47,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 140 transitions, 1540 flow [2024-06-14 11:46:47,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 140 transitions, 1469 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:47,686 INFO L231 Difference]: Finished difference. Result has 131 places, 124 transitions, 1230 flow [2024-06-14 11:46:47,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1230, PETRI_PLACES=131, PETRI_TRANSITIONS=124} [2024-06-14 11:46:47,686 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-14 11:46:47,687 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 124 transitions, 1230 flow [2024-06-14 11:46:47,687 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 11:46:47,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:47,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:47,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 11:46:47,687 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 11:46:47,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:47,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1721134373, now seen corresponding path program 3 times [2024-06-14 11:46:47,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:47,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133528004] [2024-06-14 11:46:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:47,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:49,020 INFO 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 11:46:49,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:49,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133528004] [2024-06-14 11:46:49,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133528004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:49,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:49,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:49,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270549223] [2024-06-14 11:46:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:49,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:49,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:49,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:49,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:49,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 124 transitions, 1230 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 11:46:49,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:49,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:49,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:49,432 INFO L124 PetriNetUnfolderBase]: 394/687 cut-off events. [2024-06-14 11:46:49,432 INFO L125 PetriNetUnfolderBase]: For 23809/23811 co-relation queries the response was YES. [2024-06-14 11:46:49,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 687 events. 394/687 cut-off events. For 23809/23811 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2883 event pairs, 51 based on Foata normal form. 6/692 useless extension candidates. Maximal degree in co-relation 4485. Up to 557 conditions per place. [2024-06-14 11:46:49,436 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 103 selfloop transitions, 39 changer transitions 0/144 dead transitions. [2024-06-14 11:46:49,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 144 transitions, 1606 flow [2024-06-14 11:46:49,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:46:49,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 11:46:49,438 INFO L175 Difference]: Start difference. First operand has 131 places, 124 transitions, 1230 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:46:49,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 144 transitions, 1606 flow [2024-06-14 11:46:49,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 144 transitions, 1523 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:49,475 INFO L231 Difference]: Finished difference. Result has 133 places, 128 transitions, 1292 flow [2024-06-14 11:46:49,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1292, PETRI_PLACES=133, PETRI_TRANSITIONS=128} [2024-06-14 11:46:49,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-14 11:46:49,476 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 128 transitions, 1292 flow [2024-06-14 11:46:49,476 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 11:46:49,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:49,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:49,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 11:46:49,476 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 11:46:49,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1262534318, now seen corresponding path program 5 times [2024-06-14 11:46:49,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:49,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909430648] [2024-06-14 11:46:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:49,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:50,511 INFO 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 11:46:50,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:50,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909430648] [2024-06-14 11:46:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909430648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:50,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:50,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:50,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68695492] [2024-06-14 11:46:50,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:50,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:50,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:50,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:50,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:50,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 128 transitions, 1292 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 11:46:50,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:50,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:50,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:50,844 INFO L124 PetriNetUnfolderBase]: 402/700 cut-off events. [2024-06-14 11:46:50,844 INFO L125 PetriNetUnfolderBase]: For 23986/23988 co-relation queries the response was YES. [2024-06-14 11:46:50,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4731 conditions, 700 events. 402/700 cut-off events. For 23986/23988 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2958 event pairs, 48 based on Foata normal form. 3/702 useless extension candidates. Maximal degree in co-relation 4663. Up to 563 conditions per place. [2024-06-14 11:46:50,849 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 37 changer transitions 0/149 dead transitions. [2024-06-14 11:46:50,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 149 transitions, 1744 flow [2024-06-14 11:46:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:50,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:50,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 11:46:50,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 11:46:50,860 INFO L175 Difference]: Start difference. First operand has 133 places, 128 transitions, 1292 flow. Second operand 9 states and 115 transitions. [2024-06-14 11:46:50,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 149 transitions, 1744 flow [2024-06-14 11:46:50,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 149 transitions, 1637 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:50,911 INFO L231 Difference]: Finished difference. Result has 136 places, 133 transitions, 1332 flow [2024-06-14 11:46:50,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1332, PETRI_PLACES=136, PETRI_TRANSITIONS=133} [2024-06-14 11:46:50,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-14 11:46:50,912 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 133 transitions, 1332 flow [2024-06-14 11:46:50,912 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 11:46:50,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:50,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:50,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 11:46:50,912 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 11:46:50,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:50,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1262539898, now seen corresponding path program 6 times [2024-06-14 11:46:50,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:50,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399018566] [2024-06-14 11:46:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:50,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:51,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399018566] [2024-06-14 11:46:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399018566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:51,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:51,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295274126] [2024-06-14 11:46:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:51,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:51,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:51,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:51,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:51,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:51,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 133 transitions, 1332 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 11:46:51,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:51,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:51,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:52,193 INFO L124 PetriNetUnfolderBase]: 418/726 cut-off events. [2024-06-14 11:46:52,193 INFO L125 PetriNetUnfolderBase]: For 27119/27121 co-relation queries the response was YES. [2024-06-14 11:46:52,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5022 conditions, 726 events. 418/726 cut-off events. For 27119/27121 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3090 event pairs, 53 based on Foata normal form. 4/729 useless extension candidates. Maximal degree in co-relation 4952. Up to 565 conditions per place. [2024-06-14 11:46:52,199 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 43 changer transitions 0/155 dead transitions. [2024-06-14 11:46:52,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 155 transitions, 1825 flow [2024-06-14 11:46:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 11:46:52,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 11:46:52,205 INFO L175 Difference]: Start difference. First operand has 136 places, 133 transitions, 1332 flow. Second operand 9 states and 118 transitions. [2024-06-14 11:46:52,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 155 transitions, 1825 flow [2024-06-14 11:46:52,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 155 transitions, 1770 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:52,262 INFO L231 Difference]: Finished difference. Result has 142 places, 138 transitions, 1464 flow [2024-06-14 11:46:52,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1464, PETRI_PLACES=142, PETRI_TRANSITIONS=138} [2024-06-14 11:46:52,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-14 11:46:52,263 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 138 transitions, 1464 flow [2024-06-14 11:46:52,263 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 11:46:52,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:52,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:52,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 11:46:52,264 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 11:46:52,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash 279119899, now seen corresponding path program 4 times [2024-06-14 11:46:52,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:52,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893518801] [2024-06-14 11:46:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:53,430 INFO 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 11:46:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:53,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893518801] [2024-06-14 11:46:53,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893518801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:53,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:53,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132866831] [2024-06-14 11:46:53,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:53,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:53,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:53,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:53,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:53,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 138 transitions, 1464 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 11:46:53,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:53,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:53,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:53,953 INFO L124 PetriNetUnfolderBase]: 424/737 cut-off events. [2024-06-14 11:46:53,954 INFO L125 PetriNetUnfolderBase]: For 29001/29001 co-relation queries the response was YES. [2024-06-14 11:46:53,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5262 conditions, 737 events. 424/737 cut-off events. For 29001/29001 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3143 event pairs, 78 based on Foata normal form. 2/738 useless extension candidates. Maximal degree in co-relation 5189. Up to 682 conditions per place. [2024-06-14 11:46:53,962 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 133 selfloop transitions, 19 changer transitions 0/154 dead transitions. [2024-06-14 11:46:53,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 154 transitions, 1832 flow [2024-06-14 11:46:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 11:46:53,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680555555555556 [2024-06-14 11:46:53,964 INFO L175 Difference]: Start difference. First operand has 142 places, 138 transitions, 1464 flow. Second operand 9 states and 106 transitions. [2024-06-14 11:46:53,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 154 transitions, 1832 flow [2024-06-14 11:46:54,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 154 transitions, 1767 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:54,027 INFO L231 Difference]: Finished difference. Result has 146 places, 140 transitions, 1476 flow [2024-06-14 11:46:54,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1476, PETRI_PLACES=146, PETRI_TRANSITIONS=140} [2024-06-14 11:46:54,028 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-14 11:46:54,028 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 140 transitions, 1476 flow [2024-06-14 11:46:54,029 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 11:46:54,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:54,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:54,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 11:46:54,029 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 11:46:54,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:54,030 INFO L85 PathProgramCache]: Analyzing trace with hash 28832653, now seen corresponding path program 5 times [2024-06-14 11:46:54,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:54,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588965442] [2024-06-14 11:46:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:54,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:55,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:55,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588965442] [2024-06-14 11:46:55,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588965442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:55,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:55,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:55,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521920038] [2024-06-14 11:46:55,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:55,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:55,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:55,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:55,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:55,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:55,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 140 transitions, 1476 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 11:46:55,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:55,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:55,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:55,418 INFO L124 PetriNetUnfolderBase]: 430/747 cut-off events. [2024-06-14 11:46:55,419 INFO L125 PetriNetUnfolderBase]: For 30425/30425 co-relation queries the response was YES. [2024-06-14 11:46:55,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5366 conditions, 747 events. 430/747 cut-off events. For 30425/30425 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3187 event pairs, 80 based on Foata normal form. 2/748 useless extension candidates. Maximal degree in co-relation 5291. Up to 708 conditions per place. [2024-06-14 11:46:55,440 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 15 changer transitions 0/153 dead transitions. [2024-06-14 11:46:55,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 153 transitions, 1832 flow [2024-06-14 11:46:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 11:46:55,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-14 11:46:55,441 INFO L175 Difference]: Start difference. First operand has 146 places, 140 transitions, 1476 flow. Second operand 9 states and 100 transitions. [2024-06-14 11:46:55,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 153 transitions, 1832 flow [2024-06-14 11:46:55,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 153 transitions, 1777 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:55,488 INFO L231 Difference]: Finished difference. Result has 148 places, 142 transitions, 1490 flow [2024-06-14 11:46:55,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1490, PETRI_PLACES=148, PETRI_TRANSITIONS=142} [2024-06-14 11:46:55,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-14 11:46:55,488 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 142 transitions, 1490 flow [2024-06-14 11:46:55,489 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 11:46:55,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:55,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:55,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 11:46:55,489 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 11:46:55,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:55,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1919695397, now seen corresponding path program 6 times [2024-06-14 11:46:55,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:55,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136364719] [2024-06-14 11:46:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:55,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:56,633 INFO 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 11:46:56,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:56,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136364719] [2024-06-14 11:46:56,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136364719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:56,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:56,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:56,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729710806] [2024-06-14 11:46:56,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:56,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:56,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:56,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:56,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:56,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:56,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 142 transitions, 1490 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 11:46:56,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:56,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:56,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:57,098 INFO L124 PetriNetUnfolderBase]: 436/757 cut-off events. [2024-06-14 11:46:57,098 INFO L125 PetriNetUnfolderBase]: For 31828/31828 co-relation queries the response was YES. [2024-06-14 11:46:57,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5461 conditions, 757 events. 436/757 cut-off events. For 31828/31828 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3244 event pairs, 80 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 5385. Up to 714 conditions per place. [2024-06-14 11:46:57,103 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 16 changer transitions 0/156 dead transitions. [2024-06-14 11:46:57,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 156 transitions, 1860 flow [2024-06-14 11:46:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:57,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 11:46:57,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:46:57,105 INFO L175 Difference]: Start difference. First operand has 148 places, 142 transitions, 1490 flow. Second operand 9 states and 102 transitions. [2024-06-14 11:46:57,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 156 transitions, 1860 flow [2024-06-14 11:46:57,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 1807 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:57,181 INFO L231 Difference]: Finished difference. Result has 150 places, 144 transitions, 1512 flow [2024-06-14 11:46:57,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1512, PETRI_PLACES=150, PETRI_TRANSITIONS=144} [2024-06-14 11:46:57,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-14 11:46:57,183 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 144 transitions, 1512 flow [2024-06-14 11:46:57,183 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 11:46:57,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:57,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:57,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 11:46:57,184 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 11:46:57,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:57,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1919695614, now seen corresponding path program 7 times [2024-06-14 11:46:57,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:57,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589104640] [2024-06-14 11:46:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:57,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:58,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:58,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589104640] [2024-06-14 11:46:58,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589104640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:58,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:58,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:58,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988452394] [2024-06-14 11:46:58,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:58,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:58,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:58,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:58,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 144 transitions, 1512 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 11:46:58,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:58,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:58,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:58,400 INFO L124 PetriNetUnfolderBase]: 445/772 cut-off events. [2024-06-14 11:46:58,400 INFO L125 PetriNetUnfolderBase]: For 34140/34140 co-relation queries the response was YES. [2024-06-14 11:46:58,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5572 conditions, 772 events. 445/772 cut-off events. For 34140/34140 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3331 event pairs, 82 based on Foata normal form. 3/774 useless extension candidates. Maximal degree in co-relation 5495. Up to 724 conditions per place. [2024-06-14 11:46:58,405 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 17 changer transitions 0/159 dead transitions. [2024-06-14 11:46:58,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 159 transitions, 1896 flow [2024-06-14 11:46:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:58,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:58,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:46:58,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 11:46:58,406 INFO L175 Difference]: Start difference. First operand has 150 places, 144 transitions, 1512 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:46:58,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 159 transitions, 1896 flow [2024-06-14 11:46:58,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 159 transitions, 1843 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:58,459 INFO L231 Difference]: Finished difference. Result has 152 places, 147 transitions, 1547 flow [2024-06-14 11:46:58,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=152, PETRI_TRANSITIONS=147} [2024-06-14 11:46:58,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-14 11:46:58,460 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 147 transitions, 1547 flow [2024-06-14 11:46:58,460 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 11:46:58,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:58,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:58,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 11:46:58,460 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 11:46:58,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash -237073877, now seen corresponding path program 7 times [2024-06-14 11:46:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:58,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6717076] [2024-06-14 11:46:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:59,749 INFO 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 11:46:59,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:59,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6717076] [2024-06-14 11:46:59,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6717076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:59,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:59,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:59,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75760116] [2024-06-14 11:46:59,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:59,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:59,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:59,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:59,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:59,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:46:59,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 147 transitions, 1547 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 11:46:59,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:59,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:46:59,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:00,207 INFO L124 PetriNetUnfolderBase]: 441/766 cut-off events. [2024-06-14 11:47:00,207 INFO L125 PetriNetUnfolderBase]: For 33187/33187 co-relation queries the response was YES. [2024-06-14 11:47:00,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 766 events. 441/766 cut-off events. For 33187/33187 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3303 event pairs, 74 based on Foata normal form. 2/767 useless extension candidates. Maximal degree in co-relation 5433. Up to 682 conditions per place. [2024-06-14 11:47:00,212 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 130 selfloop transitions, 27 changer transitions 0/159 dead transitions. [2024-06-14 11:47:00,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 159 transitions, 1889 flow [2024-06-14 11:47:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:00,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 11:47:00,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 11:47:00,214 INFO L175 Difference]: Start difference. First operand has 152 places, 147 transitions, 1547 flow. Second operand 9 states and 105 transitions. [2024-06-14 11:47:00,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 159 transitions, 1889 flow [2024-06-14 11:47:00,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 1825 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:00,269 INFO L231 Difference]: Finished difference. Result has 154 places, 147 transitions, 1542 flow [2024-06-14 11:47:00,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1542, PETRI_PLACES=154, PETRI_TRANSITIONS=147} [2024-06-14 11:47:00,270 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-14 11:47:00,270 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 147 transitions, 1542 flow [2024-06-14 11:47:00,270 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 11:47:00,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:00,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:00,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 11:47:00,271 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 11:47:00,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2118569362, now seen corresponding path program 8 times [2024-06-14 11:47:00,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:00,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674119801] [2024-06-14 11:47:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:01,136 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 11:47:01,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:01,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674119801] [2024-06-14 11:47:01,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674119801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:01,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:01,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:01,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688326129] [2024-06-14 11:47:01,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:01,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:01,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:01,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:01,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:01,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:01,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 147 transitions, 1542 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 11:47:01,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:01,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:01,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:01,538 INFO L124 PetriNetUnfolderBase]: 449/779 cut-off events. [2024-06-14 11:47:01,538 INFO L125 PetriNetUnfolderBase]: For 34944/34944 co-relation queries the response was YES. [2024-06-14 11:47:01,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5677 conditions, 779 events. 449/779 cut-off events. For 34944/34944 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3382 event pairs, 70 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 5598. Up to 677 conditions per place. [2024-06-14 11:47:01,545 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 133 selfloop transitions, 32 changer transitions 0/167 dead transitions. [2024-06-14 11:47:01,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 167 transitions, 2180 flow [2024-06-14 11:47:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:47:01,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:47:01,546 INFO L175 Difference]: Start difference. First operand has 154 places, 147 transitions, 1542 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:47:01,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 167 transitions, 2180 flow [2024-06-14 11:47:01,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 2105 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:01,611 INFO L231 Difference]: Finished difference. Result has 157 places, 154 transitions, 1668 flow [2024-06-14 11:47:01,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1668, PETRI_PLACES=157, PETRI_TRANSITIONS=154} [2024-06-14 11:47:01,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-14 11:47:01,612 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 154 transitions, 1668 flow [2024-06-14 11:47:01,612 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 11:47:01,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:01,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:01,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 11:47:01,613 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 11:47:01,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash 931088276, now seen corresponding path program 9 times [2024-06-14 11:47:01,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:01,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805382536] [2024-06-14 11:47:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:01,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:02,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:02,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:02,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805382536] [2024-06-14 11:47:02,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805382536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:02,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:02,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225230799] [2024-06-14 11:47:02,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:02,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:02,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:02,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:02,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:02,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 154 transitions, 1668 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 11:47:02,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:02,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:02,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:02,990 INFO L124 PetriNetUnfolderBase]: 447/776 cut-off events. [2024-06-14 11:47:02,990 INFO L125 PetriNetUnfolderBase]: For 35808/35808 co-relation queries the response was YES. [2024-06-14 11:47:02,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5694 conditions, 776 events. 447/776 cut-off events. For 35808/35808 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3357 event pairs, 71 based on Foata normal form. 1/776 useless extension candidates. Maximal degree in co-relation 5613. Up to 675 conditions per place. [2024-06-14 11:47:02,995 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 131 selfloop transitions, 34 changer transitions 0/167 dead transitions. [2024-06-14 11:47:02,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 167 transitions, 2114 flow [2024-06-14 11:47:02,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:02,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:47:02,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:47:02,996 INFO L175 Difference]: Start difference. First operand has 157 places, 154 transitions, 1668 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:47:02,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 167 transitions, 2114 flow [2024-06-14 11:47:03,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 167 transitions, 2028 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:03,059 INFO L231 Difference]: Finished difference. Result has 161 places, 154 transitions, 1655 flow [2024-06-14 11:47:03,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1655, PETRI_PLACES=161, PETRI_TRANSITIONS=154} [2024-06-14 11:47:03,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-14 11:47:03,060 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 154 transitions, 1655 flow [2024-06-14 11:47:03,060 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 11:47:03,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:03,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:03,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 11:47:03,061 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 11:47:03,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:03,061 INFO L85 PathProgramCache]: Analyzing trace with hash -236872284, now seen corresponding path program 10 times [2024-06-14 11:47:03,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:03,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493849969] [2024-06-14 11:47:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:03,911 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 11:47:03,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:03,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493849969] [2024-06-14 11:47:03,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493849969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:03,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:03,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:03,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569855649] [2024-06-14 11:47:03,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:03,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:03,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:03,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:03,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:03,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:03,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 154 transitions, 1655 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 11:47:03,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:03,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:03,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:04,308 INFO L124 PetriNetUnfolderBase]: 441/767 cut-off events. [2024-06-14 11:47:04,308 INFO L125 PetriNetUnfolderBase]: For 36002/36002 co-relation queries the response was YES. [2024-06-14 11:47:04,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5539 conditions, 767 events. 441/767 cut-off events. For 36002/36002 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3321 event pairs, 75 based on Foata normal form. 3/769 useless extension candidates. Maximal degree in co-relation 5457. Up to 707 conditions per place. [2024-06-14 11:47:04,312 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 20 changer transitions 0/168 dead transitions. [2024-06-14 11:47:04,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 168 transitions, 2021 flow [2024-06-14 11:47:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 11:47:04,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-14 11:47:04,314 INFO L175 Difference]: Start difference. First operand has 161 places, 154 transitions, 1655 flow. Second operand 9 states and 107 transitions. [2024-06-14 11:47:04,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 168 transitions, 2021 flow [2024-06-14 11:47:04,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 168 transitions, 1940 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:04,377 INFO L231 Difference]: Finished difference. Result has 163 places, 154 transitions, 1620 flow [2024-06-14 11:47:04,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1620, PETRI_PLACES=163, PETRI_TRANSITIONS=154} [2024-06-14 11:47:04,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-14 11:47:04,378 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 154 transitions, 1620 flow [2024-06-14 11:47:04,378 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 11:47:04,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:04,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:04,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 11:47:04,379 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 11:47:04,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:04,379 INFO L85 PathProgramCache]: Analyzing trace with hash 837792129, now seen corresponding path program 8 times [2024-06-14 11:47:04,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:04,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237927739] [2024-06-14 11:47:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:04,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:05,376 INFO 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 11:47:05,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:05,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237927739] [2024-06-14 11:47:05,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237927739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:05,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:05,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:05,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001087520] [2024-06-14 11:47:05,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:05,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:05,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:05,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:05,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 154 transitions, 1620 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 11:47:05,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:05,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:05,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:06,072 INFO L124 PetriNetUnfolderBase]: 437/761 cut-off events. [2024-06-14 11:47:06,073 INFO L125 PetriNetUnfolderBase]: For 34338/34338 co-relation queries the response was YES. [2024-06-14 11:47:06,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5405 conditions, 761 events. 437/761 cut-off events. For 34338/34338 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3293 event pairs, 48 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 5322. Up to 546 conditions per place. [2024-06-14 11:47:06,078 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 72 changer transitions 0/191 dead transitions. [2024-06-14 11:47:06,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 191 transitions, 2196 flow [2024-06-14 11:47:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-14 11:47:06,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-14 11:47:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 164 transitions. [2024-06-14 11:47:06,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-14 11:47:06,079 INFO L175 Difference]: Start difference. First operand has 163 places, 154 transitions, 1620 flow. Second operand 14 states and 164 transitions. [2024-06-14 11:47:06,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 191 transitions, 2196 flow [2024-06-14 11:47:06,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 191 transitions, 2152 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:06,148 INFO L231 Difference]: Finished difference. Result has 175 places, 167 transitions, 1915 flow [2024-06-14 11:47:06,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1915, PETRI_PLACES=175, PETRI_TRANSITIONS=167} [2024-06-14 11:47:06,148 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-14 11:47:06,148 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 167 transitions, 1915 flow [2024-06-14 11:47:06,148 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 11:47:06,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:06,149 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 11:47:06,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 11:47:06,149 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 11:47:06,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1110470218, now seen corresponding path program 1 times [2024-06-14 11:47:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:06,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270474509] [2024-06-14 11:47:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:06,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:07,426 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 11:47:07,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:07,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270474509] [2024-06-14 11:47:07,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270474509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:07,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:07,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:07,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135526904] [2024-06-14 11:47:07,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:07,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:07,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:07,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:07,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:07,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:07,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 167 transitions, 1915 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 11:47:07,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:07,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:07,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:07,916 INFO L124 PetriNetUnfolderBase]: 448/782 cut-off events. [2024-06-14 11:47:07,917 INFO L125 PetriNetUnfolderBase]: For 38535/38535 co-relation queries the response was YES. [2024-06-14 11:47:07,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5878 conditions, 782 events. 448/782 cut-off events. For 38535/38535 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3427 event pairs, 45 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 5789. Up to 682 conditions per place. [2024-06-14 11:47:07,922 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 162 selfloop transitions, 24 changer transitions 0/188 dead transitions. [2024-06-14 11:47:07,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 188 transitions, 2465 flow [2024-06-14 11:47:07,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:07,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 11:47:07,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 11:47:07,923 INFO L175 Difference]: Start difference. First operand has 175 places, 167 transitions, 1915 flow. Second operand 10 states and 118 transitions. [2024-06-14 11:47:07,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 188 transitions, 2465 flow [2024-06-14 11:47:07,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 188 transitions, 2378 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:07,999 INFO L231 Difference]: Finished difference. Result has 180 places, 169 transitions, 1920 flow [2024-06-14 11:47:07,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1920, PETRI_PLACES=180, PETRI_TRANSITIONS=169} [2024-06-14 11:47:07,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-14 11:47:07,999 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 169 transitions, 1920 flow [2024-06-14 11:47:07,999 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 11:47:07,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:08,000 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 11:47:08,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 11:47:08,000 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 11:47:08,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:08,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2099468522, now seen corresponding path program 2 times [2024-06-14 11:47:08,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:08,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240550495] [2024-06-14 11:47:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:08,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:09,166 INFO 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 11:47:09,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:09,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240550495] [2024-06-14 11:47:09,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240550495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:09,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:09,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:09,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489165415] [2024-06-14 11:47:09,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:09,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:09,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:09,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:09,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:09,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:09,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 169 transitions, 1920 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 11:47:09,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:09,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:09,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:09,570 INFO L124 PetriNetUnfolderBase]: 445/777 cut-off events. [2024-06-14 11:47:09,571 INFO L125 PetriNetUnfolderBase]: For 37616/37616 co-relation queries the response was YES. [2024-06-14 11:47:09,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5758 conditions, 777 events. 445/777 cut-off events. For 37616/37616 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3391 event pairs, 61 based on Foata normal form. 2/778 useless extension candidates. Maximal degree in co-relation 5670. Up to 706 conditions per place. [2024-06-14 11:47:09,577 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 161 selfloop transitions, 22 changer transitions 0/185 dead transitions. [2024-06-14 11:47:09,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 185 transitions, 2328 flow [2024-06-14 11:47:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:47:09,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:47:09,580 INFO L175 Difference]: Start difference. First operand has 180 places, 169 transitions, 1920 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:47:09,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 185 transitions, 2328 flow [2024-06-14 11:47:09,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 185 transitions, 2264 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:09,654 INFO L231 Difference]: Finished difference. Result has 183 places, 169 transitions, 1904 flow [2024-06-14 11:47:09,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1904, PETRI_PLACES=183, PETRI_TRANSITIONS=169} [2024-06-14 11:47:09,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-14 11:47:09,655 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 169 transitions, 1904 flow [2024-06-14 11:47:09,655 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 11:47:09,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:09,656 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 11:47:09,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 11:47:09,656 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 11:47:09,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2096667052, now seen corresponding path program 1 times [2024-06-14 11:47:09,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:09,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636592682] [2024-06-14 11:47:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:11,095 INFO 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 11:47:11,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:11,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636592682] [2024-06-14 11:47:11,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636592682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:11,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:11,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409531777] [2024-06-14 11:47:11,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:11,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:11,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:11,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 169 transitions, 1904 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 11:47:11,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:11,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:11,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:11,641 INFO L124 PetriNetUnfolderBase]: 487/849 cut-off events. [2024-06-14 11:47:11,641 INFO L125 PetriNetUnfolderBase]: For 44229/44229 co-relation queries the response was YES. [2024-06-14 11:47:11,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6254 conditions, 849 events. 487/849 cut-off events. For 44229/44229 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3835 event pairs, 86 based on Foata normal form. 4/852 useless extension candidates. Maximal degree in co-relation 6164. Up to 777 conditions per place. [2024-06-14 11:47:11,647 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 175 selfloop transitions, 23 changer transitions 0/200 dead transitions. [2024-06-14 11:47:11,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 200 transitions, 2624 flow [2024-06-14 11:47:11,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:47:11,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:47:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:47:11,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 11:47:11,649 INFO L175 Difference]: Start difference. First operand has 183 places, 169 transitions, 1904 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:47:11,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 200 transitions, 2624 flow [2024-06-14 11:47:11,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 200 transitions, 2565 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:11,723 INFO L231 Difference]: Finished difference. Result has 189 places, 182 transitions, 2098 flow [2024-06-14 11:47:11,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2098, PETRI_PLACES=189, PETRI_TRANSITIONS=182} [2024-06-14 11:47:11,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-14 11:47:11,724 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 182 transitions, 2098 flow [2024-06-14 11:47:11,724 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 11:47:11,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:11,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:11,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 11:47:11,724 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 11:47:11,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash -649496358, now seen corresponding path program 2 times [2024-06-14 11:47:11,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:11,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077428467] [2024-06-14 11:47:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:12,974 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 11:47:12,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:12,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077428467] [2024-06-14 11:47:12,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077428467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:12,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:12,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:12,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752339908] [2024-06-14 11:47:12,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:12,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:12,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:13,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:13,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 182 transitions, 2098 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 11:47:13,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:13,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:13,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:13,488 INFO L124 PetriNetUnfolderBase]: 523/906 cut-off events. [2024-06-14 11:47:13,488 INFO L125 PetriNetUnfolderBase]: For 51821/51821 co-relation queries the response was YES. [2024-06-14 11:47:13,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7066 conditions, 906 events. 523/906 cut-off events. For 51821/51821 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4164 event pairs, 49 based on Foata normal form. 2/907 useless extension candidates. Maximal degree in co-relation 6972. Up to 503 conditions per place. [2024-06-14 11:47:13,494 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 141 selfloop transitions, 74 changer transitions 0/217 dead transitions. [2024-06-14 11:47:13,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 217 transitions, 3086 flow [2024-06-14 11:47:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 11:47:13,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-14 11:47:13,495 INFO L175 Difference]: Start difference. First operand has 189 places, 182 transitions, 2098 flow. Second operand 10 states and 133 transitions. [2024-06-14 11:47:13,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 217 transitions, 3086 flow [2024-06-14 11:47:13,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 217 transitions, 2995 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:13,584 INFO L231 Difference]: Finished difference. Result has 196 places, 192 transitions, 2381 flow [2024-06-14 11:47:13,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2381, PETRI_PLACES=196, PETRI_TRANSITIONS=192} [2024-06-14 11:47:13,584 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-14 11:47:13,584 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 192 transitions, 2381 flow [2024-06-14 11:47:13,585 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 11:47:13,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:13,585 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 11:47:13,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 11:47:13,585 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 11:47:13,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:13,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1742032602, now seen corresponding path program 3 times [2024-06-14 11:47:13,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:13,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936136037] [2024-06-14 11:47:13,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:13,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:14,728 INFO 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 11:47:14,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936136037] [2024-06-14 11:47:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936136037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:14,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:14,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:14,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926905401] [2024-06-14 11:47:14,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:14,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:14,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 192 transitions, 2381 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 11:47:14,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:14,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:14,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:15,267 INFO L124 PetriNetUnfolderBase]: 549/949 cut-off events. [2024-06-14 11:47:15,267 INFO L125 PetriNetUnfolderBase]: For 59468/59468 co-relation queries the response was YES. [2024-06-14 11:47:15,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7782 conditions, 949 events. 549/949 cut-off events. For 59468/59468 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4375 event pairs, 59 based on Foata normal form. 2/950 useless extension candidates. Maximal degree in co-relation 7686. Up to 376 conditions per place. [2024-06-14 11:47:15,275 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 96 changer transitions 0/222 dead transitions. [2024-06-14 11:47:15,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 222 transitions, 3337 flow [2024-06-14 11:47:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:15,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 11:47:15,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-14 11:47:15,276 INFO L175 Difference]: Start difference. First operand has 196 places, 192 transitions, 2381 flow. Second operand 10 states and 137 transitions. [2024-06-14 11:47:15,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 222 transitions, 3337 flow [2024-06-14 11:47:15,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 222 transitions, 3193 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:15,387 INFO L231 Difference]: Finished difference. Result has 203 places, 200 transitions, 2628 flow [2024-06-14 11:47:15,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2628, PETRI_PLACES=203, PETRI_TRANSITIONS=200} [2024-06-14 11:47:15,387 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-14 11:47:15,388 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 200 transitions, 2628 flow [2024-06-14 11:47:15,388 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 11:47:15,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:15,388 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 11:47:15,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 11:47:15,388 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 11:47:15,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:15,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1981380842, now seen corresponding path program 3 times [2024-06-14 11:47:15,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:15,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918327430] [2024-06-14 11:47:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:15,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:17,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:17,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918327430] [2024-06-14 11:47:17,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918327430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:17,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:17,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:17,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123787538] [2024-06-14 11:47:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:17,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:17,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:17,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:17,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:17,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:17,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 200 transitions, 2628 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 11:47:17,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:17,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:17,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:17,508 INFO L124 PetriNetUnfolderBase]: 553/956 cut-off events. [2024-06-14 11:47:17,508 INFO L125 PetriNetUnfolderBase]: For 62276/62276 co-relation queries the response was YES. [2024-06-14 11:47:17,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8054 conditions, 956 events. 553/956 cut-off events. For 62276/62276 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4413 event pairs, 80 based on Foata normal form. 2/957 useless extension candidates. Maximal degree in co-relation 7955. Up to 850 conditions per place. [2024-06-14 11:47:17,519 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 39 changer transitions 0/216 dead transitions. [2024-06-14 11:47:17,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 216 transitions, 3114 flow [2024-06-14 11:47:17,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 11:47:17,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 11:47:17,520 INFO L175 Difference]: Start difference. First operand has 203 places, 200 transitions, 2628 flow. Second operand 10 states and 117 transitions. [2024-06-14 11:47:17,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 216 transitions, 3114 flow [2024-06-14 11:47:17,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 216 transitions, 3048 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:17,627 INFO L231 Difference]: Finished difference. Result has 209 places, 201 transitions, 2666 flow [2024-06-14 11:47:17,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2666, PETRI_PLACES=209, PETRI_TRANSITIONS=201} [2024-06-14 11:47:17,628 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-14 11:47:17,628 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 201 transitions, 2666 flow [2024-06-14 11:47:17,628 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 11:47:17,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:17,628 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 11:47:17,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 11:47:17,629 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 11:47:17,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1981375882, now seen corresponding path program 4 times [2024-06-14 11:47:17,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:17,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161556687] [2024-06-14 11:47:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:17,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:19,034 INFO 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 11:47:19,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:19,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161556687] [2024-06-14 11:47:19,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161556687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:19,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:19,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:19,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792562430] [2024-06-14 11:47:19,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:19,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:19,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:19,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:19,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:19,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:19,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 201 transitions, 2666 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 11:47:19,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:19,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:19,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:19,618 INFO L124 PetriNetUnfolderBase]: 608/1048 cut-off events. [2024-06-14 11:47:19,619 INFO L125 PetriNetUnfolderBase]: For 68077/68077 co-relation queries the response was YES. [2024-06-14 11:47:19,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8746 conditions, 1048 events. 608/1048 cut-off events. For 68077/68077 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4961 event pairs, 100 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 8645. Up to 761 conditions per place. [2024-06-14 11:47:19,627 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 61 changer transitions 0/245 dead transitions. [2024-06-14 11:47:19,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 245 transitions, 3619 flow [2024-06-14 11:47:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:47:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:47:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:47:19,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:47:19,628 INFO L175 Difference]: Start difference. First operand has 209 places, 201 transitions, 2666 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:47:19,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 245 transitions, 3619 flow [2024-06-14 11:47:19,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 245 transitions, 3513 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:19,747 INFO L231 Difference]: Finished difference. Result has 216 places, 222 transitions, 3034 flow [2024-06-14 11:47:19,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3034, PETRI_PLACES=216, PETRI_TRANSITIONS=222} [2024-06-14 11:47:19,747 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-14 11:47:19,748 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 222 transitions, 3034 flow [2024-06-14 11:47:19,748 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 11:47:19,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:19,748 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 11:47:19,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 11:47:19,748 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 11:47:19,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:19,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1815741708, now seen corresponding path program 4 times [2024-06-14 11:47:19,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:19,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039531870] [2024-06-14 11:47:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:19,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:20,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:20,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039531870] [2024-06-14 11:47:20,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039531870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:20,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:20,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:20,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134713628] [2024-06-14 11:47:20,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:20,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:20,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:20,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:20,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:20,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 222 transitions, 3034 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 11:47:20,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:20,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:20,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:21,241 INFO L124 PetriNetUnfolderBase]: 612/1056 cut-off events. [2024-06-14 11:47:21,241 INFO L125 PetriNetUnfolderBase]: For 70337/70337 co-relation queries the response was YES. [2024-06-14 11:47:21,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9062 conditions, 1056 events. 612/1056 cut-off events. For 70337/70337 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5019 event pairs, 106 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 8956. Up to 997 conditions per place. [2024-06-14 11:47:21,249 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 207 selfloop transitions, 25 changer transitions 0/234 dead transitions. [2024-06-14 11:47:21,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 234 transitions, 3546 flow [2024-06-14 11:47:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-14 11:47:21,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-14 11:47:21,250 INFO L175 Difference]: Start difference. First operand has 216 places, 222 transitions, 3034 flow. Second operand 9 states and 103 transitions. [2024-06-14 11:47:21,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 234 transitions, 3546 flow [2024-06-14 11:47:21,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 234 transitions, 3484 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:21,365 INFO L231 Difference]: Finished difference. Result has 221 places, 223 transitions, 3050 flow [2024-06-14 11:47:21,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3050, PETRI_PLACES=221, PETRI_TRANSITIONS=223} [2024-06-14 11:47:21,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-14 11:47:21,366 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 223 transitions, 3050 flow [2024-06-14 11:47:21,367 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 11:47:21,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:21,367 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 11:47:21,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 11:47:21,367 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 11:47:21,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:21,367 INFO L85 PathProgramCache]: Analyzing trace with hash -477355036, now seen corresponding path program 1 times [2024-06-14 11:47:21,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:21,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492673614] [2024-06-14 11:47:21,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:21,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:22,470 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 11:47:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492673614] [2024-06-14 11:47:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492673614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:22,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:22,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:22,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961535894] [2024-06-14 11:47:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:22,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:22,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:22,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:22,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:22,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 223 transitions, 3050 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 11:47:22,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:22,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:22,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:22,970 INFO L124 PetriNetUnfolderBase]: 619/1069 cut-off events. [2024-06-14 11:47:22,970 INFO L125 PetriNetUnfolderBase]: For 72726/72726 co-relation queries the response was YES. [2024-06-14 11:47:22,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9163 conditions, 1069 events. 619/1069 cut-off events. For 72726/72726 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5116 event pairs, 74 based on Foata normal form. 2/1070 useless extension candidates. Maximal degree in co-relation 9055. Up to 977 conditions per place. [2024-06-14 11:47:22,980 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 208 selfloop transitions, 33 changer transitions 0/243 dead transitions. [2024-06-14 11:47:22,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 243 transitions, 3618 flow [2024-06-14 11:47:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:47:22,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:47:22,983 INFO L175 Difference]: Start difference. First operand has 221 places, 223 transitions, 3050 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:47:22,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 243 transitions, 3618 flow [2024-06-14 11:47:23,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 243 transitions, 3550 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:23,125 INFO L231 Difference]: Finished difference. Result has 226 places, 230 transitions, 3151 flow [2024-06-14 11:47:23,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3151, PETRI_PLACES=226, PETRI_TRANSITIONS=230} [2024-06-14 11:47:23,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-14 11:47:23,126 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 230 transitions, 3151 flow [2024-06-14 11:47:23,126 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 11:47:23,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:23,126 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 11:47:23,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 11:47:23,127 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 11:47:23,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash -483857224, now seen corresponding path program 5 times [2024-06-14 11:47:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:23,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380389568] [2024-06-14 11:47:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:23,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:24,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:24,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380389568] [2024-06-14 11:47:24,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380389568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:24,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:24,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616884692] [2024-06-14 11:47:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:24,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:24,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:24,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:24,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:24,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:24,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 230 transitions, 3151 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 11:47:24,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:24,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:24,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:24,799 INFO L124 PetriNetUnfolderBase]: 724/1239 cut-off events. [2024-06-14 11:47:24,800 INFO L125 PetriNetUnfolderBase]: For 109840/109840 co-relation queries the response was YES. [2024-06-14 11:47:24,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11695 conditions, 1239 events. 724/1239 cut-off events. For 109840/109840 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6126 event pairs, 87 based on Foata normal form. 6/1244 useless extension candidates. Maximal degree in co-relation 11583. Up to 871 conditions per place. [2024-06-14 11:47:24,819 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 66 changer transitions 0/274 dead transitions. [2024-06-14 11:47:24,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 274 transitions, 4637 flow [2024-06-14 11:47:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 11:47:24,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 11:47:24,821 INFO L175 Difference]: Start difference. First operand has 226 places, 230 transitions, 3151 flow. Second operand 10 states and 135 transitions. [2024-06-14 11:47:24,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 274 transitions, 4637 flow [2024-06-14 11:47:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 274 transitions, 4590 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:25,064 INFO L231 Difference]: Finished difference. Result has 233 places, 249 transitions, 3724 flow [2024-06-14 11:47:25,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3724, PETRI_PLACES=233, PETRI_TRANSITIONS=249} [2024-06-14 11:47:25,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-14 11:47:25,065 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 249 transitions, 3724 flow [2024-06-14 11:47:25,065 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 11:47:25,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:25,066 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 11:47:25,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 11:47:25,066 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 11:47:25,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1815736748, now seen corresponding path program 6 times [2024-06-14 11:47:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:25,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591958779] [2024-06-14 11:47:25,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:25,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:26,074 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 11:47:26,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:26,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591958779] [2024-06-14 11:47:26,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591958779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:26,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:26,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122336033] [2024-06-14 11:47:26,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:26,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:26,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:26,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:26,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 249 transitions, 3724 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 11:47:26,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:26,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:26,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:26,666 INFO L124 PetriNetUnfolderBase]: 722/1237 cut-off events. [2024-06-14 11:47:26,666 INFO L125 PetriNetUnfolderBase]: For 108234/108234 co-relation queries the response was YES. [2024-06-14 11:47:26,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11732 conditions, 1237 events. 722/1237 cut-off events. For 108234/108234 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6112 event pairs, 87 based on Foata normal form. 6/1242 useless extension candidates. Maximal degree in co-relation 11617. Up to 875 conditions per place. [2024-06-14 11:47:26,678 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 72 changer transitions 0/273 dead transitions. [2024-06-14 11:47:26,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 273 transitions, 4660 flow [2024-06-14 11:47:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 11:47:26,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 11:47:26,680 INFO L175 Difference]: Start difference. First operand has 233 places, 249 transitions, 3724 flow. Second operand 10 states and 132 transitions. [2024-06-14 11:47:26,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 273 transitions, 4660 flow [2024-06-14 11:47:26,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 273 transitions, 4486 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:26,891 INFO L231 Difference]: Finished difference. Result has 239 places, 253 transitions, 3801 flow [2024-06-14 11:47:26,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3554, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3801, PETRI_PLACES=239, PETRI_TRANSITIONS=253} [2024-06-14 11:47:26,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-14 11:47:26,891 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 253 transitions, 3801 flow [2024-06-14 11:47:26,892 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 11:47:26,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:26,892 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 11:47:26,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 11:47:26,892 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 11:47:26,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:26,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1809307658, now seen corresponding path program 7 times [2024-06-14 11:47:26,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:26,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607335300] [2024-06-14 11:47:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:26,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:28,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:28,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607335300] [2024-06-14 11:47:28,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607335300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:28,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:28,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:28,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625222770] [2024-06-14 11:47:28,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:28,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:28,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:28,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:28,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:28,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:28,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 253 transitions, 3801 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 11:47:28,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:28,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:28,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:28,775 INFO L124 PetriNetUnfolderBase]: 734/1257 cut-off events. [2024-06-14 11:47:28,776 INFO L125 PetriNetUnfolderBase]: For 108255/108255 co-relation queries the response was YES. [2024-06-14 11:47:28,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 1257 events. 734/1257 cut-off events. For 108255/108255 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6243 event pairs, 95 based on Foata normal form. 4/1260 useless extension candidates. Maximal degree in co-relation 11882. Up to 1092 conditions per place. [2024-06-14 11:47:28,789 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 48 changer transitions 0/276 dead transitions. [2024-06-14 11:47:28,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 276 transitions, 4670 flow [2024-06-14 11:47:28,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:28,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:47:28,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 11:47:28,790 INFO L175 Difference]: Start difference. First operand has 239 places, 253 transitions, 3801 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:47:28,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 276 transitions, 4670 flow [2024-06-14 11:47:29,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 276 transitions, 4432 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:29,033 INFO L231 Difference]: Finished difference. Result has 242 places, 259 transitions, 3829 flow [2024-06-14 11:47:29,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3573, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3829, PETRI_PLACES=242, PETRI_TRANSITIONS=259} [2024-06-14 11:47:29,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-14 11:47:29,034 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 259 transitions, 3829 flow [2024-06-14 11:47:29,035 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 11:47:29,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:29,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:29,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 11:47:29,035 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 11:47:29,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1809307844, now seen corresponding path program 1 times [2024-06-14 11:47:29,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:29,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661136868] [2024-06-14 11:47:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:29,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:30,089 INFO 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 11:47:30,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:30,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661136868] [2024-06-14 11:47:30,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661136868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:30,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:30,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:30,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853940905] [2024-06-14 11:47:30,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:30,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:30,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:30,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:30,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:30,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:30,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 259 transitions, 3829 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 11:47:30,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:30,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:30,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:30,555 INFO L124 PetriNetUnfolderBase]: 728/1248 cut-off events. [2024-06-14 11:47:30,555 INFO L125 PetriNetUnfolderBase]: For 104895/104895 co-relation queries the response was YES. [2024-06-14 11:47:30,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11640 conditions, 1248 events. 728/1248 cut-off events. For 104895/104895 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6215 event pairs, 96 based on Foata normal form. 3/1250 useless extension candidates. Maximal degree in co-relation 11522. Up to 1112 conditions per place. [2024-06-14 11:47:30,566 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 232 selfloop transitions, 39 changer transitions 0/273 dead transitions. [2024-06-14 11:47:30,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 273 transitions, 4411 flow [2024-06-14 11:47:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:47:30,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 11:47:30,567 INFO L175 Difference]: Start difference. First operand has 242 places, 259 transitions, 3829 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:47:30,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 273 transitions, 4411 flow [2024-06-14 11:47:30,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 273 transitions, 4291 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:30,796 INFO L231 Difference]: Finished difference. Result has 245 places, 259 transitions, 3797 flow [2024-06-14 11:47:30,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3709, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3797, PETRI_PLACES=245, PETRI_TRANSITIONS=259} [2024-06-14 11:47:30,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 11:47:30,797 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 259 transitions, 3797 flow [2024-06-14 11:47:30,797 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 11:47:30,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:30,797 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 11:47:30,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 11:47:30,797 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 11:47:30,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:30,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1815563954, now seen corresponding path program 2 times [2024-06-14 11:47:30,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:30,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295354843] [2024-06-14 11:47:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:30,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:32,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:32,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295354843] [2024-06-14 11:47:32,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295354843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:32,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:32,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:32,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586657840] [2024-06-14 11:47:32,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:32,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:32,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:32,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:32,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:32,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 259 transitions, 3797 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 11:47:32,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:32,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:32,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:32,701 INFO L124 PetriNetUnfolderBase]: 724/1241 cut-off events. [2024-06-14 11:47:32,701 INFO L125 PetriNetUnfolderBase]: For 101112/101112 co-relation queries the response was YES. [2024-06-14 11:47:32,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11558 conditions, 1241 events. 724/1241 cut-off events. For 101112/101112 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6150 event pairs, 98 based on Foata normal form. 1/1241 useless extension candidates. Maximal degree in co-relation 11438. Up to 1049 conditions per place. [2024-06-14 11:47:32,714 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 217 selfloop transitions, 53 changer transitions 0/272 dead transitions. [2024-06-14 11:47:32,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 272 transitions, 4373 flow [2024-06-14 11:47:32,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 11:47:32,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-14 11:47:32,716 INFO L175 Difference]: Start difference. First operand has 245 places, 259 transitions, 3797 flow. Second operand 9 states and 118 transitions. [2024-06-14 11:47:32,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 272 transitions, 4373 flow [2024-06-14 11:47:32,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 272 transitions, 4258 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:32,964 INFO L231 Difference]: Finished difference. Result has 246 places, 259 transitions, 3795 flow [2024-06-14 11:47:32,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3795, PETRI_PLACES=246, PETRI_TRANSITIONS=259} [2024-06-14 11:47:32,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-14 11:47:32,965 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 259 transitions, 3795 flow [2024-06-14 11:47:32,965 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 11:47:32,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:32,965 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 11:47:32,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 11:47:32,966 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 11:47:32,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash -483850714, now seen corresponding path program 8 times [2024-06-14 11:47:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:32,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524499762] [2024-06-14 11:47:32,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:34,097 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 11:47:34,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:34,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524499762] [2024-06-14 11:47:34,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524499762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:34,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:34,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:34,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617692550] [2024-06-14 11:47:34,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:34,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:34,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:34,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:34,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:34,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:34,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 259 transitions, 3795 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 11:47:34,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:34,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:34,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:34,754 INFO L124 PetriNetUnfolderBase]: 716/1229 cut-off events. [2024-06-14 11:47:34,754 INFO L125 PetriNetUnfolderBase]: For 102807/102807 co-relation queries the response was YES. [2024-06-14 11:47:34,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11245 conditions, 1229 events. 716/1229 cut-off events. For 102807/102807 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6092 event pairs, 83 based on Foata normal form. 4/1232 useless extension candidates. Maximal degree in co-relation 11125. Up to 982 conditions per place. [2024-06-14 11:47:34,767 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 205 selfloop transitions, 70 changer transitions 0/277 dead transitions. [2024-06-14 11:47:34,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 277 transitions, 4540 flow [2024-06-14 11:47:34,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:47:34,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 11:47:34,769 INFO L175 Difference]: Start difference. First operand has 246 places, 259 transitions, 3795 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:47:34,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 277 transitions, 4540 flow [2024-06-14 11:47:35,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 277 transitions, 4408 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:47:35,017 INFO L231 Difference]: Finished difference. Result has 247 places, 260 transitions, 3842 flow [2024-06-14 11:47:35,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3842, PETRI_PLACES=247, PETRI_TRANSITIONS=260} [2024-06-14 11:47:35,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-14 11:47:35,018 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 260 transitions, 3842 flow [2024-06-14 11:47:35,018 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 11:47:35,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:35,018 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 11:47:35,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 11:47:35,018 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 11:47:35,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:35,019 INFO L85 PathProgramCache]: Analyzing trace with hash -477594604, now seen corresponding path program 9 times [2024-06-14 11:47:35,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:35,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128196727] [2024-06-14 11:47:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:35,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:36,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:36,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:36,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128196727] [2024-06-14 11:47:36,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128196727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:36,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:36,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:36,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345923063] [2024-06-14 11:47:36,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:36,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:36,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:36,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:36,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:36,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 260 transitions, 3842 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 11:47:36,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:36,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:36,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:36,981 INFO L124 PetriNetUnfolderBase]: 708/1217 cut-off events. [2024-06-14 11:47:36,981 INFO L125 PetriNetUnfolderBase]: For 95789/95789 co-relation queries the response was YES. [2024-06-14 11:47:36,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 1217 events. 708/1217 cut-off events. For 95789/95789 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6033 event pairs, 85 based on Foata normal form. 4/1220 useless extension candidates. Maximal degree in co-relation 10840. Up to 1058 conditions per place. [2024-06-14 11:47:36,995 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 48 changer transitions 0/276 dead transitions. [2024-06-14 11:47:36,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 276 transitions, 4436 flow [2024-06-14 11:47:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:36,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:36,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:47:36,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 11:47:36,997 INFO L175 Difference]: Start difference. First operand has 247 places, 260 transitions, 3842 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:47:36,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 276 transitions, 4436 flow [2024-06-14 11:47:37,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 276 transitions, 4138 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:37,231 INFO L231 Difference]: Finished difference. Result has 249 places, 260 transitions, 3648 flow [2024-06-14 11:47:37,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3544, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3648, PETRI_PLACES=249, PETRI_TRANSITIONS=260} [2024-06-14 11:47:37,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-14 11:47:37,232 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 260 transitions, 3648 flow [2024-06-14 11:47:37,232 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 11:47:37,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:37,233 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 11:47:37,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 11:47:37,233 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 11:47:37,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:37,233 INFO L85 PathProgramCache]: Analyzing trace with hash 63022598, now seen corresponding path program 2 times [2024-06-14 11:47:37,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:37,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068108720] [2024-06-14 11:47:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:37,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:38,362 INFO 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 11:47:38,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:38,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068108720] [2024-06-14 11:47:38,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068108720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:38,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:38,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:38,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338120524] [2024-06-14 11:47:38,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:38,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:38,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:38,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:38,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:38,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:38,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 260 transitions, 3648 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 11:47:38,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:38,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:38,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:38,866 INFO L124 PetriNetUnfolderBase]: 712/1225 cut-off events. [2024-06-14 11:47:38,866 INFO L125 PetriNetUnfolderBase]: For 93679/93679 co-relation queries the response was YES. [2024-06-14 11:47:38,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10804 conditions, 1225 events. 712/1225 cut-off events. For 93679/93679 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6079 event pairs, 137 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 10683. Up to 1179 conditions per place. [2024-06-14 11:47:38,879 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 255 selfloop transitions, 17 changer transitions 0/274 dead transitions. [2024-06-14 11:47:38,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 274 transitions, 4268 flow [2024-06-14 11:47:38,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 11:47:38,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:47:38,880 INFO L175 Difference]: Start difference. First operand has 249 places, 260 transitions, 3648 flow. Second operand 9 states and 102 transitions. [2024-06-14 11:47:38,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 274 transitions, 4268 flow [2024-06-14 11:47:39,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 274 transitions, 4151 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 11:47:39,115 INFO L231 Difference]: Finished difference. Result has 250 places, 263 transitions, 3624 flow [2024-06-14 11:47:39,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3624, PETRI_PLACES=250, PETRI_TRANSITIONS=263} [2024-06-14 11:47:39,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-14 11:47:39,116 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 263 transitions, 3624 flow [2024-06-14 11:47:39,116 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 11:47:39,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:39,116 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 11:47:39,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 11:47:39,117 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 11:47:39,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:39,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1257404372, now seen corresponding path program 10 times [2024-06-14 11:47:39,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:39,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747835583] [2024-06-14 11:47:39,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:39,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:40,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:40,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747835583] [2024-06-14 11:47:40,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747835583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:40,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:40,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:40,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441739794] [2024-06-14 11:47:40,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:40,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:40,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:40,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:40,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:40,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:40,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 263 transitions, 3624 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 11:47:40,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:40,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:40,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:41,075 INFO L124 PetriNetUnfolderBase]: 728/1251 cut-off events. [2024-06-14 11:47:41,075 INFO L125 PetriNetUnfolderBase]: For 100749/100749 co-relation queries the response was YES. [2024-06-14 11:47:41,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11141 conditions, 1251 events. 728/1251 cut-off events. For 100749/100749 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6253 event pairs, 134 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 11018. Up to 1166 conditions per place. [2024-06-14 11:47:41,088 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 26 changer transitions 0/282 dead transitions. [2024-06-14 11:47:41,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 282 transitions, 4466 flow [2024-06-14 11:47:41,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:47:41,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-14 11:47:41,089 INFO L175 Difference]: Start difference. First operand has 250 places, 263 transitions, 3624 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:47:41,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 282 transitions, 4466 flow [2024-06-14 11:47:41,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 282 transitions, 4422 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:41,320 INFO L231 Difference]: Finished difference. Result has 254 places, 267 transitions, 3757 flow [2024-06-14 11:47:41,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3580, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3757, PETRI_PLACES=254, PETRI_TRANSITIONS=267} [2024-06-14 11:47:41,320 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 11:47:41,320 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 267 transitions, 3757 flow [2024-06-14 11:47:41,321 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 11:47:41,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:41,321 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 11:47:41,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 11:47:41,321 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 11:47:41,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:41,322 INFO L85 PathProgramCache]: Analyzing trace with hash 914800548, now seen corresponding path program 3 times [2024-06-14 11:47:41,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:41,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844824402] [2024-06-14 11:47:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:41,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:42,360 INFO 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 11:47:42,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:42,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844824402] [2024-06-14 11:47:42,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844824402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:42,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:42,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:42,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618656066] [2024-06-14 11:47:42,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:42,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:42,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:42,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:42,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:42,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:42,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 267 transitions, 3757 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 11:47:42,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:42,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:42,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:42,928 INFO L124 PetriNetUnfolderBase]: 732/1259 cut-off events. [2024-06-14 11:47:42,929 INFO L125 PetriNetUnfolderBase]: For 104017/104017 co-relation queries the response was YES. [2024-06-14 11:47:42,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11253 conditions, 1259 events. 732/1259 cut-off events. For 104017/104017 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6293 event pairs, 140 based on Foata normal form. 2/1260 useless extension candidates. Maximal degree in co-relation 11129. Up to 1220 conditions per place. [2024-06-14 11:47:42,942 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 262 selfloop transitions, 14 changer transitions 0/278 dead transitions. [2024-06-14 11:47:42,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 278 transitions, 4345 flow [2024-06-14 11:47:42,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:42,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 11:47:42,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-14 11:47:42,943 INFO L175 Difference]: Start difference. First operand has 254 places, 267 transitions, 3757 flow. Second operand 9 states and 97 transitions. [2024-06-14 11:47:42,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 278 transitions, 4345 flow [2024-06-14 11:47:43,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 278 transitions, 4258 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:43,201 INFO L231 Difference]: Finished difference. Result has 257 places, 268 transitions, 3718 flow [2024-06-14 11:47:43,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3670, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3718, PETRI_PLACES=257, PETRI_TRANSITIONS=268} [2024-06-14 11:47:43,202 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 11:47:43,202 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 268 transitions, 3718 flow [2024-06-14 11:47:43,202 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 11:47:43,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:43,203 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 11:47:43,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 11:47:43,203 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 11:47:43,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash 914444358, now seen corresponding path program 4 times [2024-06-14 11:47:43,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:43,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345691023] [2024-06-14 11:47:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:43,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:44,149 INFO 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 11:47:44,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:44,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345691023] [2024-06-14 11:47:44,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345691023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:44,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:44,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292344917] [2024-06-14 11:47:44,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:44,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:44,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:44,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:44,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:44,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 268 transitions, 3718 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 11:47:44,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:44,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:44,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:44,652 INFO L124 PetriNetUnfolderBase]: 736/1267 cut-off events. [2024-06-14 11:47:44,653 INFO L125 PetriNetUnfolderBase]: For 106452/106452 co-relation queries the response was YES. [2024-06-14 11:47:44,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11269 conditions, 1267 events. 736/1267 cut-off events. For 106452/106452 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6374 event pairs, 148 based on Foata normal form. 2/1268 useless extension candidates. Maximal degree in co-relation 11143. Up to 1225 conditions per place. [2024-06-14 11:47:44,666 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 260 selfloop transitions, 17 changer transitions 0/279 dead transitions. [2024-06-14 11:47:44,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 279 transitions, 4312 flow [2024-06-14 11:47:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 11:47:44,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:47:44,667 INFO L175 Difference]: Start difference. First operand has 257 places, 268 transitions, 3718 flow. Second operand 9 states and 99 transitions. [2024-06-14 11:47:44,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 279 transitions, 4312 flow [2024-06-14 11:47:44,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 279 transitions, 4274 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:44,937 INFO L231 Difference]: Finished difference. Result has 259 places, 269 transitions, 3737 flow [2024-06-14 11:47:44,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3737, PETRI_PLACES=259, PETRI_TRANSITIONS=269} [2024-06-14 11:47:44,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-14 11:47:44,938 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 269 transitions, 3737 flow [2024-06-14 11:47:44,938 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 11:47:44,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:44,939 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 11:47:44,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 11:47:44,939 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 11:47:44,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash -972952906, now seen corresponding path program 11 times [2024-06-14 11:47:44,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:44,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265224644] [2024-06-14 11:47:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:44,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:46,491 INFO 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 11:47:46,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:46,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265224644] [2024-06-14 11:47:46,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265224644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:46,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:46,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:46,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458370908] [2024-06-14 11:47:46,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:46,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:46,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:46,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:46,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 269 transitions, 3737 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 11:47:46,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:46,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:46,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:47,271 INFO L124 PetriNetUnfolderBase]: 760/1306 cut-off events. [2024-06-14 11:47:47,271 INFO L125 PetriNetUnfolderBase]: For 117902/117902 co-relation queries the response was YES. [2024-06-14 11:47:47,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11882 conditions, 1306 events. 760/1306 cut-off events. For 117902/117902 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6607 event pairs, 134 based on Foata normal form. 2/1307 useless extension candidates. Maximal degree in co-relation 11755. Up to 1205 conditions per place. [2024-06-14 11:47:47,284 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 262 selfloop transitions, 28 changer transitions 0/292 dead transitions. [2024-06-14 11:47:47,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 292 transitions, 4791 flow [2024-06-14 11:47:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 11:47:47,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 11:47:47,285 INFO L175 Difference]: Start difference. First operand has 259 places, 269 transitions, 3737 flow. Second operand 10 states and 117 transitions. [2024-06-14 11:47:47,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 292 transitions, 4791 flow [2024-06-14 11:47:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 292 transitions, 4746 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:47,613 INFO L231 Difference]: Finished difference. Result has 263 places, 276 transitions, 3943 flow [2024-06-14 11:47:47,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3692, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3943, PETRI_PLACES=263, PETRI_TRANSITIONS=276} [2024-06-14 11:47:47,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-14 11:47:47,614 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 276 transitions, 3943 flow [2024-06-14 11:47:47,614 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 11:47:47,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:47,614 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 11:47:47,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 11:47:47,615 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 11:47:47,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1194604456, now seen corresponding path program 12 times [2024-06-14 11:47:47,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:47,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066626358] [2024-06-14 11:47:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:47,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:48,735 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 11:47:48,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:48,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066626358] [2024-06-14 11:47:48,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066626358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:48,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:48,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:48,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646639278] [2024-06-14 11:47:48,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:48,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:48,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:48,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:48,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:48,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:48,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 276 transitions, 3943 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 11:47:48,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:48,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:48,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:49,425 INFO L124 PetriNetUnfolderBase]: 789/1354 cut-off events. [2024-06-14 11:47:49,425 INFO L125 PetriNetUnfolderBase]: For 133444/133444 co-relation queries the response was YES. [2024-06-14 11:47:49,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12610 conditions, 1354 events. 789/1354 cut-off events. For 133444/133444 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6894 event pairs, 136 based on Foata normal form. 4/1357 useless extension candidates. Maximal degree in co-relation 12481. Up to 1234 conditions per place. [2024-06-14 11:47:49,440 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 31 changer transitions 0/298 dead transitions. [2024-06-14 11:47:49,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 298 transitions, 4866 flow [2024-06-14 11:47:49,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:47:49,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:47:49,441 INFO L175 Difference]: Start difference. First operand has 263 places, 276 transitions, 3943 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:47:49,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 298 transitions, 4866 flow [2024-06-14 11:47:49,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 298 transitions, 4732 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:49,780 INFO L231 Difference]: Finished difference. Result has 269 places, 283 transitions, 4057 flow [2024-06-14 11:47:49,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3809, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4057, PETRI_PLACES=269, PETRI_TRANSITIONS=283} [2024-06-14 11:47:49,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-14 11:47:49,781 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 283 transitions, 4057 flow [2024-06-14 11:47:49,781 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 11:47:49,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:49,781 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 11:47:49,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 11:47:49,781 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 11:47:49,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1257397676, now seen corresponding path program 3 times [2024-06-14 11:47:49,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064896625] [2024-06-14 11:47:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:49,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:51,023 INFO 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 11:47:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064896625] [2024-06-14 11:47:51,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064896625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:51,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:51,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:51,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452023572] [2024-06-14 11:47:51,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:51,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:51,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:51,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:51,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:51,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:51,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 283 transitions, 4057 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 11:47:51,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:51,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:51,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:51,663 INFO L124 PetriNetUnfolderBase]: 781/1341 cut-off events. [2024-06-14 11:47:51,663 INFO L125 PetriNetUnfolderBase]: For 126731/126731 co-relation queries the response was YES. [2024-06-14 11:47:51,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12318 conditions, 1341 events. 781/1341 cut-off events. For 126731/126731 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6824 event pairs, 144 based on Foata normal form. 3/1343 useless extension candidates. Maximal degree in co-relation 12187. Up to 1268 conditions per place. [2024-06-14 11:47:51,678 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 24 changer transitions 0/297 dead transitions. [2024-06-14 11:47:51,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 297 transitions, 4687 flow [2024-06-14 11:47:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 11:47:51,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 11:47:51,679 INFO L175 Difference]: Start difference. First operand has 269 places, 283 transitions, 4057 flow. Second operand 10 states and 118 transitions. [2024-06-14 11:47:51,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 297 transitions, 4687 flow [2024-06-14 11:47:52,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 297 transitions, 4597 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:52,034 INFO L231 Difference]: Finished difference. Result has 273 places, 283 transitions, 4021 flow [2024-06-14 11:47:52,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4021, PETRI_PLACES=273, PETRI_TRANSITIONS=283} [2024-06-14 11:47:52,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 242 predicate places. [2024-06-14 11:47:52,035 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 283 transitions, 4021 flow [2024-06-14 11:47:52,036 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 11:47:52,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:52,036 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 11:47:52,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 11:47:52,036 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 11:47:52,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:52,037 INFO L85 PathProgramCache]: Analyzing trace with hash 904316100, now seen corresponding path program 13 times [2024-06-14 11:47:52,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:52,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848667580] [2024-06-14 11:47:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:52,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:53,013 INFO 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 11:47:53,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:53,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848667580] [2024-06-14 11:47:53,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848667580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:53,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:53,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:53,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34065318] [2024-06-14 11:47:53,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:53,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:53,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:53,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:53,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:53,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 283 transitions, 4021 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 11:47:53,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:53,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:53,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:53,646 INFO L124 PetriNetUnfolderBase]: 771/1326 cut-off events. [2024-06-14 11:47:53,647 INFO L125 PetriNetUnfolderBase]: For 122581/122581 co-relation queries the response was YES. [2024-06-14 11:47:53,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11886 conditions, 1326 events. 771/1326 cut-off events. For 122581/122581 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6737 event pairs, 145 based on Foata normal form. 5/1330 useless extension candidates. Maximal degree in co-relation 11753. Up to 1260 conditions per place. [2024-06-14 11:47:53,661 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 274 selfloop transitions, 22 changer transitions 0/298 dead transitions. [2024-06-14 11:47:53,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 298 transitions, 4707 flow [2024-06-14 11:47:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:47:53,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:47:53,662 INFO L175 Difference]: Start difference. First operand has 273 places, 283 transitions, 4021 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:47:53,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 298 transitions, 4707 flow [2024-06-14 11:47:54,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 298 transitions, 4617 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:54,029 INFO L231 Difference]: Finished difference. Result has 275 places, 285 transitions, 4027 flow [2024-06-14 11:47:54,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3931, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4027, PETRI_PLACES=275, PETRI_TRANSITIONS=285} [2024-06-14 11:47:54,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-14 11:47:54,030 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 285 transitions, 4027 flow [2024-06-14 11:47:54,030 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 11:47:54,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:54,030 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 11:47:54,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 11:47:54,030 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 11:47:54,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:54,031 INFO L85 PathProgramCache]: Analyzing trace with hash 618979080, now seen corresponding path program 14 times [2024-06-14 11:47:54,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:54,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084972000] [2024-06-14 11:47:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:54,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:55,120 INFO 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 11:47:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:55,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084972000] [2024-06-14 11:47:55,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084972000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:55,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:55,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:55,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696652785] [2024-06-14 11:47:55,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:55,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:55,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:55,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:55,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 285 transitions, 4027 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 11:47:55,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:55,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:55,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:55,790 INFO L124 PetriNetUnfolderBase]: 790/1358 cut-off events. [2024-06-14 11:47:55,791 INFO L125 PetriNetUnfolderBase]: For 127191/127191 co-relation queries the response was YES. [2024-06-14 11:47:55,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12247 conditions, 1358 events. 790/1358 cut-off events. For 127191/127191 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6958 event pairs, 139 based on Foata normal form. 4/1361 useless extension candidates. Maximal degree in co-relation 12113. Up to 1250 conditions per place. [2024-06-14 11:47:55,809 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 276 selfloop transitions, 27 changer transitions 0/305 dead transitions. [2024-06-14 11:47:55,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 305 transitions, 4957 flow [2024-06-14 11:47:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:47:55,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 11:47:55,810 INFO L175 Difference]: Start difference. First operand has 275 places, 285 transitions, 4027 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:47:55,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 305 transitions, 4957 flow [2024-06-14 11:47:56,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 305 transitions, 4849 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:56,233 INFO L231 Difference]: Finished difference. Result has 278 places, 291 transitions, 4148 flow [2024-06-14 11:47:56,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4148, PETRI_PLACES=278, PETRI_TRANSITIONS=291} [2024-06-14 11:47:56,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-14 11:47:56,234 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 291 transitions, 4148 flow [2024-06-14 11:47:56,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:56,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:56,235 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 11:47:56,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 11:47:56,235 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 11:47:56,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1250968586, now seen corresponding path program 4 times [2024-06-14 11:47:56,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:56,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860680144] [2024-06-14 11:47:56,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:56,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:57,684 INFO 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 11:47:57,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:57,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860680144] [2024-06-14 11:47:57,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860680144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:57,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:57,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:57,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931529736] [2024-06-14 11:47:57,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:57,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:57,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:47:57,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 291 transitions, 4148 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 11:47:57,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:57,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:47:57,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:58,300 INFO L124 PetriNetUnfolderBase]: 796/1368 cut-off events. [2024-06-14 11:47:58,301 INFO L125 PetriNetUnfolderBase]: For 123853/123853 co-relation queries the response was YES. [2024-06-14 11:47:58,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12350 conditions, 1368 events. 796/1368 cut-off events. For 123853/123853 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7030 event pairs, 130 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 12214. Up to 1198 conditions per place. [2024-06-14 11:47:58,317 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 50 changer transitions 0/308 dead transitions. [2024-06-14 11:47:58,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 308 transitions, 4998 flow [2024-06-14 11:47:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:58,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 11:47:58,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 11:47:58,318 INFO L175 Difference]: Start difference. First operand has 278 places, 291 transitions, 4148 flow. Second operand 9 states and 111 transitions. [2024-06-14 11:47:58,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 308 transitions, 4998 flow [2024-06-14 11:47:58,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 308 transitions, 4882 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:58,778 INFO L231 Difference]: Finished difference. Result has 282 places, 296 transitions, 4251 flow [2024-06-14 11:47:58,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4032, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4251, PETRI_PLACES=282, PETRI_TRANSITIONS=296} [2024-06-14 11:47:58,779 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-14 11:47:58,779 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 296 transitions, 4251 flow [2024-06-14 11:47:58,779 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 11:47:58,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:58,779 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 11:47:58,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 11:47:58,780 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 11:47:58,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash 608475790, now seen corresponding path program 5 times [2024-06-14 11:47:58,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:58,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497470905] [2024-06-14 11:47:58,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:58,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:59,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:59,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497470905] [2024-06-14 11:47:59,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497470905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:59,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:59,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:59,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859930722] [2024-06-14 11:47:59,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:59,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:59,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:00,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:00,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 296 transitions, 4251 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 11:48:00,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:00,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:00,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:00,576 INFO L124 PetriNetUnfolderBase]: 788/1355 cut-off events. [2024-06-14 11:48:00,577 INFO L125 PetriNetUnfolderBase]: For 123811/123811 co-relation queries the response was YES. [2024-06-14 11:48:00,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12112 conditions, 1355 events. 788/1355 cut-off events. For 123811/123811 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6945 event pairs, 142 based on Foata normal form. 3/1357 useless extension candidates. Maximal degree in co-relation 11973. Up to 1294 conditions per place. [2024-06-14 11:48:00,601 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 20 changer transitions 0/309 dead transitions. [2024-06-14 11:48:00,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 309 transitions, 4901 flow [2024-06-14 11:48:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 11:48:00,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-14 11:48:00,605 INFO L175 Difference]: Start difference. First operand has 282 places, 296 transitions, 4251 flow. Second operand 10 states and 114 transitions. [2024-06-14 11:48:00,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 309 transitions, 4901 flow [2024-06-14 11:48:01,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 309 transitions, 4767 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:01,058 INFO L231 Difference]: Finished difference. Result has 285 places, 296 transitions, 4163 flow [2024-06-14 11:48:01,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4117, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4163, PETRI_PLACES=285, PETRI_TRANSITIONS=296} [2024-06-14 11:48:01,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-14 11:48:01,059 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 296 transitions, 4163 flow [2024-06-14 11:48:01,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:01,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:01,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:01,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 11:48:01,059 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:48:01,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:01,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1250968772, now seen corresponding path program 15 times [2024-06-14 11:48:01,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:01,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337353743] [2024-06-14 11:48:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:01,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:02,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:02,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337353743] [2024-06-14 11:48:02,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337353743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:02,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:02,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549338127] [2024-06-14 11:48:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:02,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:02,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:02,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:02,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:02,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:02,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 296 transitions, 4163 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 11:48:02,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:02,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:02,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:02,822 INFO L124 PetriNetUnfolderBase]: 810/1391 cut-off events. [2024-06-14 11:48:02,822 INFO L125 PetriNetUnfolderBase]: For 131194/131194 co-relation queries the response was YES. [2024-06-14 11:48:02,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12463 conditions, 1391 events. 810/1391 cut-off events. For 131194/131194 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7163 event pairs, 133 based on Foata normal form. 4/1394 useless extension candidates. Maximal degree in co-relation 12325. Up to 1118 conditions per place. [2024-06-14 11:48:02,838 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 60 changer transitions 0/318 dead transitions. [2024-06-14 11:48:02,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 318 transitions, 5301 flow [2024-06-14 11:48:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 11:48:02,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 11:48:02,840 INFO L175 Difference]: Start difference. First operand has 285 places, 296 transitions, 4163 flow. Second operand 10 states and 124 transitions. [2024-06-14 11:48:02,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 318 transitions, 5301 flow [2024-06-14 11:48:03,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 318 transitions, 5218 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 11:48:03,276 INFO L231 Difference]: Finished difference. Result has 286 places, 302 transitions, 4388 flow [2024-06-14 11:48:03,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4080, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4388, PETRI_PLACES=286, PETRI_TRANSITIONS=302} [2024-06-14 11:48:03,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-14 11:48:03,277 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 302 transitions, 4388 flow [2024-06-14 11:48:03,277 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 11:48:03,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:03,277 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 11:48:03,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 11:48:03,278 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 11:48:03,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:03,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1250963812, now seen corresponding path program 5 times [2024-06-14 11:48:03,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:03,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644685537] [2024-06-14 11:48:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:03,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:04,529 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 11:48:04,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:04,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644685537] [2024-06-14 11:48:04,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644685537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:04,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:04,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:04,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192764308] [2024-06-14 11:48:04,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:04,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:04,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:04,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:04,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:04,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 302 transitions, 4388 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 11:48:04,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:04,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:04,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:05,120 INFO L124 PetriNetUnfolderBase]: 807/1386 cut-off events. [2024-06-14 11:48:05,120 INFO L125 PetriNetUnfolderBase]: For 124449/124449 co-relation queries the response was YES. [2024-06-14 11:48:05,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12394 conditions, 1386 events. 807/1386 cut-off events. For 124449/124449 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7102 event pairs, 156 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 12256. Up to 1352 conditions per place. [2024-06-14 11:48:05,131 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 294 selfloop transitions, 16 changer transitions 0/312 dead transitions. [2024-06-14 11:48:05,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 312 transitions, 5030 flow [2024-06-14 11:48:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:48:05,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 11:48:05,132 INFO L175 Difference]: Start difference. First operand has 286 places, 302 transitions, 4388 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:48:05,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 312 transitions, 5030 flow [2024-06-14 11:48:05,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 312 transitions, 4684 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:05,572 INFO L231 Difference]: Finished difference. Result has 288 places, 302 transitions, 4078 flow [2024-06-14 11:48:05,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4078, PETRI_PLACES=288, PETRI_TRANSITIONS=302} [2024-06-14 11:48:05,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-14 11:48:05,572 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 302 transitions, 4078 flow [2024-06-14 11:48:05,572 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 11:48:05,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:05,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:05,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 11:48:05,573 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 11:48:05,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:05,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1251148262, now seen corresponding path program 16 times [2024-06-14 11:48:05,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:05,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806813470] [2024-06-14 11:48:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:05,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:06,684 INFO 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 11:48:06,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:06,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806813470] [2024-06-14 11:48:06,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806813470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:06,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:06,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:06,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437027174] [2024-06-14 11:48:06,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:06,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:06,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:06,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:06,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:06,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 302 transitions, 4078 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 11:48:06,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:06,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:06,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:07,347 INFO L124 PetriNetUnfolderBase]: 813/1396 cut-off events. [2024-06-14 11:48:07,347 INFO L125 PetriNetUnfolderBase]: For 127011/127011 co-relation queries the response was YES. [2024-06-14 11:48:07,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12072 conditions, 1396 events. 813/1396 cut-off events. For 127011/127011 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7205 event pairs, 131 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 11934. Up to 1228 conditions per place. [2024-06-14 11:48:07,364 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 270 selfloop transitions, 46 changer transitions 0/318 dead transitions. [2024-06-14 11:48:07,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 318 transitions, 4954 flow [2024-06-14 11:48:07,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 11:48:07,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-14 11:48:07,365 INFO L175 Difference]: Start difference. First operand has 288 places, 302 transitions, 4078 flow. Second operand 10 states and 119 transitions. [2024-06-14 11:48:07,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 318 transitions, 4954 flow [2024-06-14 11:48:07,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 318 transitions, 4813 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-14 11:48:07,788 INFO L231 Difference]: Finished difference. Result has 286 places, 304 transitions, 4094 flow [2024-06-14 11:48:07,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3937, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4094, PETRI_PLACES=286, PETRI_TRANSITIONS=304} [2024-06-14 11:48:07,789 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-14 11:48:07,789 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 304 transitions, 4094 flow [2024-06-14 11:48:07,789 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 11:48:07,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:07,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:07,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 11:48:07,789 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 11:48:07,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:07,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1251141752, now seen corresponding path program 17 times [2024-06-14 11:48:07,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:07,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461584734] [2024-06-14 11:48:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:07,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:08,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:08,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461584734] [2024-06-14 11:48:08,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461584734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:08,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:08,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:08,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571190664] [2024-06-14 11:48:08,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:08,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:08,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:08,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:08,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:09,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:09,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 304 transitions, 4094 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 11:48:09,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:09,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:09,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:09,532 INFO L124 PetriNetUnfolderBase]: 809/1390 cut-off events. [2024-06-14 11:48:09,532 INFO L125 PetriNetUnfolderBase]: For 124900/124900 co-relation queries the response was YES. [2024-06-14 11:48:09,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11864 conditions, 1390 events. 809/1390 cut-off events. For 124900/124900 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7164 event pairs, 132 based on Foata normal form. 2/1391 useless extension candidates. Maximal degree in co-relation 11727. Up to 1225 conditions per place. [2024-06-14 11:48:09,548 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 271 selfloop transitions, 45 changer transitions 0/318 dead transitions. [2024-06-14 11:48:09,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 318 transitions, 4766 flow [2024-06-14 11:48:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:48:09,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:48:09,549 INFO L175 Difference]: Start difference. First operand has 286 places, 304 transitions, 4094 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:48:09,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 318 transitions, 4766 flow [2024-06-14 11:48:09,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 318 transitions, 4498 flow, removed 47 selfloop flow, removed 12 redundant places. [2024-06-14 11:48:09,971 INFO L231 Difference]: Finished difference. Result has 284 places, 304 transitions, 3921 flow [2024-06-14 11:48:09,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3826, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3921, PETRI_PLACES=284, PETRI_TRANSITIONS=304} [2024-06-14 11:48:09,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 11:48:09,971 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 304 transitions, 3921 flow [2024-06-14 11:48:09,972 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 11:48:09,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:09,972 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 11:48:09,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 11:48:09,972 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 11:48:09,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:09,973 INFO L85 PathProgramCache]: Analyzing trace with hash 619225158, now seen corresponding path program 5 times [2024-06-14 11:48:09,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:09,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429208067] [2024-06-14 11:48:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:09,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:11,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429208067] [2024-06-14 11:48:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429208067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:11,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:11,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:11,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252003933] [2024-06-14 11:48:11,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:11,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:11,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:11,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:11,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:11,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 304 transitions, 3921 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 11:48:11,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:11,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:11,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:11,625 INFO L124 PetriNetUnfolderBase]: 806/1385 cut-off events. [2024-06-14 11:48:11,625 INFO L125 PetriNetUnfolderBase]: For 121244/121244 co-relation queries the response was YES. [2024-06-14 11:48:11,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11355 conditions, 1385 events. 806/1385 cut-off events. For 121244/121244 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7113 event pairs, 150 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 11222. Up to 1351 conditions per place. [2024-06-14 11:48:11,637 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 299 selfloop transitions, 14 changer transitions 0/315 dead transitions. [2024-06-14 11:48:11,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 315 transitions, 4600 flow [2024-06-14 11:48:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:48:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:48:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 11:48:11,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-14 11:48:11,638 INFO L175 Difference]: Start difference. First operand has 284 places, 304 transitions, 3921 flow. Second operand 9 states and 98 transitions. [2024-06-14 11:48:11,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 315 transitions, 4600 flow [2024-06-14 11:48:12,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 315 transitions, 4517 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:12,013 INFO L231 Difference]: Finished difference. Result has 286 places, 305 transitions, 3899 flow [2024-06-14 11:48:12,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3840, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3899, PETRI_PLACES=286, PETRI_TRANSITIONS=305} [2024-06-14 11:48:12,014 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-14 11:48:12,014 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 305 transitions, 3899 flow [2024-06-14 11:48:12,014 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 11:48:12,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:12,014 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 11:48:12,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 11:48:12,014 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 11:48:12,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1200860752, now seen corresponding path program 6 times [2024-06-14 11:48:12,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:12,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748810032] [2024-06-14 11:48:12,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:12,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:13,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:13,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748810032] [2024-06-14 11:48:13,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748810032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:13,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:13,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769096922] [2024-06-14 11:48:13,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:13,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:13,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:13,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:13,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:13,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:13,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 305 transitions, 3899 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 11:48:13,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:13,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:13,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:13,882 INFO L124 PetriNetUnfolderBase]: 804/1382 cut-off events. [2024-06-14 11:48:13,882 INFO L125 PetriNetUnfolderBase]: For 118229/118229 co-relation queries the response was YES. [2024-06-14 11:48:13,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11210 conditions, 1382 events. 804/1382 cut-off events. For 118229/118229 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7117 event pairs, 134 based on Foata normal form. 1/1382 useless extension candidates. Maximal degree in co-relation 11076. Up to 1255 conditions per place. [2024-06-14 11:48:13,896 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 272 selfloop transitions, 42 changer transitions 0/316 dead transitions. [2024-06-14 11:48:13,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 316 transitions, 4555 flow [2024-06-14 11:48:13,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:13,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:48:13,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 11:48:13,897 INFO L175 Difference]: Start difference. First operand has 286 places, 305 transitions, 3899 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:48:13,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 316 transitions, 4555 flow [2024-06-14 11:48:14,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 316 transitions, 4438 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-14 11:48:14,273 INFO L231 Difference]: Finished difference. Result has 286 places, 305 transitions, 3871 flow [2024-06-14 11:48:14,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3871, PETRI_PLACES=286, PETRI_TRANSITIONS=305} [2024-06-14 11:48:14,274 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-14 11:48:14,274 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 305 transitions, 3871 flow [2024-06-14 11:48:14,274 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 11:48:14,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:14,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:14,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 11:48:14,274 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 11:48:14,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1172374038, now seen corresponding path program 18 times [2024-06-14 11:48:14,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103571638] [2024-06-14 11:48:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:14,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:15,659 INFO 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 11:48:15,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:15,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103571638] [2024-06-14 11:48:15,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103571638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:15,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:15,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:15,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853812168] [2024-06-14 11:48:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:15,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:15,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:15,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:15,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:15,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 305 transitions, 3871 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 11:48:15,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:15,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:15,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:16,497 INFO L124 PetriNetUnfolderBase]: 820/1409 cut-off events. [2024-06-14 11:48:16,497 INFO L125 PetriNetUnfolderBase]: For 123902/123902 co-relation queries the response was YES. [2024-06-14 11:48:16,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11426 conditions, 1409 events. 820/1409 cut-off events. For 123902/123902 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7252 event pairs, 116 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 11293. Up to 1331 conditions per place. [2024-06-14 11:48:16,511 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 300 selfloop transitions, 34 changer transitions 0/336 dead transitions. [2024-06-14 11:48:16,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 336 transitions, 4747 flow [2024-06-14 11:48:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:48:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:48:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 11:48:16,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:48:16,512 INFO L175 Difference]: Start difference. First operand has 286 places, 305 transitions, 3871 flow. Second operand 12 states and 136 transitions. [2024-06-14 11:48:16,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 336 transitions, 4747 flow [2024-06-14 11:48:16,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 336 transitions, 4544 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 11:48:16,876 INFO L231 Difference]: Finished difference. Result has 289 places, 317 transitions, 3932 flow [2024-06-14 11:48:16,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3669, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3932, PETRI_PLACES=289, PETRI_TRANSITIONS=317} [2024-06-14 11:48:16,876 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-14 11:48:16,877 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 317 transitions, 3932 flow [2024-06-14 11:48:16,877 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 11:48:16,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:16,877 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 11:48:16,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 11:48:16,877 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 11:48:16,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:16,877 INFO L85 PathProgramCache]: Analyzing trace with hash 89082546, now seen corresponding path program 19 times [2024-06-14 11:48:16,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:16,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490444834] [2024-06-14 11:48:16,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:16,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:18,120 INFO 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 11:48:18,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:18,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490444834] [2024-06-14 11:48:18,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490444834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:18,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:18,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:18,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136686567] [2024-06-14 11:48:18,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:18,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:18,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:18,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:18,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:18,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 317 transitions, 3932 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 11:48:18,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:18,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:18,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:18,835 INFO L124 PetriNetUnfolderBase]: 870/1493 cut-off events. [2024-06-14 11:48:18,835 INFO L125 PetriNetUnfolderBase]: For 138690/138690 co-relation queries the response was YES. [2024-06-14 11:48:18,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12089 conditions, 1493 events. 870/1493 cut-off events. For 138690/138690 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7792 event pairs, 124 based on Foata normal form. 4/1496 useless extension candidates. Maximal degree in co-relation 11955. Up to 1383 conditions per place. [2024-06-14 11:48:18,851 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 318 selfloop transitions, 38 changer transitions 0/358 dead transitions. [2024-06-14 11:48:18,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 358 transitions, 5173 flow [2024-06-14 11:48:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:48:18,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:48:18,853 INFO L175 Difference]: Start difference. First operand has 289 places, 317 transitions, 3932 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:48:18,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 358 transitions, 5173 flow [2024-06-14 11:48:19,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 358 transitions, 5062 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-14 11:48:19,467 INFO L231 Difference]: Finished difference. Result has 299 places, 337 transitions, 4268 flow [2024-06-14 11:48:19,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4268, PETRI_PLACES=299, PETRI_TRANSITIONS=337} [2024-06-14 11:48:19,467 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-14 11:48:19,467 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 337 transitions, 4268 flow [2024-06-14 11:48:19,467 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 11:48:19,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:19,468 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 11:48:19,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 11:48:19,468 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 11:48:19,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:19,468 INFO L85 PathProgramCache]: Analyzing trace with hash 201573486, now seen corresponding path program 20 times [2024-06-14 11:48:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:19,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692762856] [2024-06-14 11:48:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:20,774 INFO 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 11:48:20,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:20,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692762856] [2024-06-14 11:48:20,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692762856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:20,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:20,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:20,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296695327] [2024-06-14 11:48:20,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:20,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:20,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:20,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:20,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 337 transitions, 4268 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 11:48:20,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:20,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:20,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:21,911 INFO L124 PetriNetUnfolderBase]: 894/1533 cut-off events. [2024-06-14 11:48:21,911 INFO L125 PetriNetUnfolderBase]: For 136953/136953 co-relation queries the response was YES. [2024-06-14 11:48:21,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12631 conditions, 1533 events. 894/1533 cut-off events. For 136953/136953 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8056 event pairs, 84 based on Foata normal form. 2/1534 useless extension candidates. Maximal degree in co-relation 12491. Up to 1151 conditions per place. [2024-06-14 11:48:21,927 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 255 selfloop transitions, 126 changer transitions 0/383 dead transitions. [2024-06-14 11:48:21,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 383 transitions, 5606 flow [2024-06-14 11:48:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:48:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:48:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-14 11:48:21,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-14 11:48:21,928 INFO L175 Difference]: Start difference. First operand has 299 places, 337 transitions, 4268 flow. Second operand 13 states and 165 transitions. [2024-06-14 11:48:21,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 383 transitions, 5606 flow [2024-06-14 11:48:22,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 383 transitions, 5503 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-14 11:48:22,376 INFO L231 Difference]: Finished difference. Result has 312 places, 356 transitions, 4836 flow [2024-06-14 11:48:22,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4836, PETRI_PLACES=312, PETRI_TRANSITIONS=356} [2024-06-14 11:48:22,377 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-14 11:48:22,377 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 356 transitions, 4836 flow [2024-06-14 11:48:22,377 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 11:48:22,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:22,377 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 11:48:22,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 11:48:22,378 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 11:48:22,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -401368610, now seen corresponding path program 21 times [2024-06-14 11:48:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:22,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296660207] [2024-06-14 11:48:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:22,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:23,402 INFO 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 11:48:23,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:23,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296660207] [2024-06-14 11:48:23,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296660207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:23,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:23,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:23,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908335644] [2024-06-14 11:48:23,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:23,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:23,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:23,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:23,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 356 transitions, 4836 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 11:48:23,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:23,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:23,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:24,138 INFO L124 PetriNetUnfolderBase]: 916/1570 cut-off events. [2024-06-14 11:48:24,138 INFO L125 PetriNetUnfolderBase]: For 147111/147111 co-relation queries the response was YES. [2024-06-14 11:48:24,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13499 conditions, 1570 events. 916/1570 cut-off events. For 147111/147111 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8280 event pairs, 134 based on Foata normal form. 4/1573 useless extension candidates. Maximal degree in co-relation 13354. Up to 1492 conditions per place. [2024-06-14 11:48:24,154 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 356 selfloop transitions, 28 changer transitions 0/386 dead transitions. [2024-06-14 11:48:24,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 386 transitions, 6003 flow [2024-06-14 11:48:24,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:48:24,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 11:48:24,156 INFO L175 Difference]: Start difference. First operand has 312 places, 356 transitions, 4836 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:48:24,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 386 transitions, 6003 flow [2024-06-14 11:48:24,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 386 transitions, 5624 flow, removed 76 selfloop flow, removed 10 redundant places. [2024-06-14 11:48:24,731 INFO L231 Difference]: Finished difference. Result has 316 places, 366 transitions, 4724 flow [2024-06-14 11:48:24,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4463, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4724, PETRI_PLACES=316, PETRI_TRANSITIONS=366} [2024-06-14 11:48:24,732 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-14 11:48:24,732 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 366 transitions, 4724 flow [2024-06-14 11:48:24,732 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 11:48:24,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:24,732 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 11:48:24,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 11:48:24,732 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 11:48:24,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash -660887753, now seen corresponding path program 1 times [2024-06-14 11:48:24,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:24,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723643996] [2024-06-14 11:48:24,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:24,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:26,446 INFO 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 11:48:26,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723643996] [2024-06-14 11:48:26,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723643996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:26,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:26,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:26,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763771766] [2024-06-14 11:48:26,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:26,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:26,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:26,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:26,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 366 transitions, 4724 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 11:48:26,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:26,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:26,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:27,293 INFO L124 PetriNetUnfolderBase]: 927/1591 cut-off events. [2024-06-14 11:48:27,294 INFO L125 PetriNetUnfolderBase]: For 150278/150278 co-relation queries the response was YES. [2024-06-14 11:48:27,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13226 conditions, 1591 events. 927/1591 cut-off events. For 150278/150278 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8458 event pairs, 108 based on Foata normal form. 2/1592 useless extension candidates. Maximal degree in co-relation 13081. Up to 1361 conditions per place. [2024-06-14 11:48:27,312 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 333 selfloop transitions, 57 changer transitions 0/392 dead transitions. [2024-06-14 11:48:27,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 392 transitions, 5748 flow [2024-06-14 11:48:27,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:48:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:48:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:48:27,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:48:27,313 INFO L175 Difference]: Start difference. First operand has 316 places, 366 transitions, 4724 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:48:27,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 392 transitions, 5748 flow [2024-06-14 11:48:28,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 392 transitions, 5561 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-14 11:48:28,032 INFO L231 Difference]: Finished difference. Result has 319 places, 368 transitions, 4677 flow [2024-06-14 11:48:28,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4537, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4677, PETRI_PLACES=319, PETRI_TRANSITIONS=368} [2024-06-14 11:48:28,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 288 predicate places. [2024-06-14 11:48:28,033 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 368 transitions, 4677 flow [2024-06-14 11:48:28,033 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 11:48:28,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:28,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:28,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 11:48:28,033 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 11:48:28,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:28,034 INFO L85 PathProgramCache]: Analyzing trace with hash -659013803, now seen corresponding path program 2 times [2024-06-14 11:48:28,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:28,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171409305] [2024-06-14 11:48:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:28,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:30,237 INFO 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 11:48:30,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:30,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171409305] [2024-06-14 11:48:30,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171409305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:30,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:30,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:30,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797421141] [2024-06-14 11:48:30,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:30,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:30,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:30,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:30,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:30,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:30,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 368 transitions, 4677 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 11:48:30,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:30,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:30,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:31,006 INFO L124 PetriNetUnfolderBase]: 966/1660 cut-off events. [2024-06-14 11:48:31,006 INFO L125 PetriNetUnfolderBase]: For 160460/160460 co-relation queries the response was YES. [2024-06-14 11:48:31,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13715 conditions, 1660 events. 966/1660 cut-off events. For 160460/160460 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8954 event pairs, 121 based on Foata normal form. 2/1661 useless extension candidates. Maximal degree in co-relation 13572. Up to 1456 conditions per place. [2024-06-14 11:48:31,026 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 335 selfloop transitions, 73 changer transitions 0/410 dead transitions. [2024-06-14 11:48:31,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 410 transitions, 5960 flow [2024-06-14 11:48:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:48:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:48:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 11:48:31,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-14 11:48:31,027 INFO L175 Difference]: Start difference. First operand has 319 places, 368 transitions, 4677 flow. Second operand 12 states and 142 transitions. [2024-06-14 11:48:31,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 410 transitions, 5960 flow [2024-06-14 11:48:31,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 410 transitions, 5839 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:48:31,685 INFO L231 Difference]: Finished difference. Result has 323 places, 383 transitions, 4913 flow [2024-06-14 11:48:31,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4913, PETRI_PLACES=323, PETRI_TRANSITIONS=383} [2024-06-14 11:48:31,686 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-14 11:48:31,686 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 383 transitions, 4913 flow [2024-06-14 11:48:31,686 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 11:48:31,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:31,687 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 11:48:31,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 11:48:31,687 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 11:48:31,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1683747825, now seen corresponding path program 3 times [2024-06-14 11:48:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:31,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526901026] [2024-06-14 11:48:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:31,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:33,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:33,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526901026] [2024-06-14 11:48:33,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526901026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:33,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:33,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:33,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040257069] [2024-06-14 11:48:33,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:33,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:33,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:33,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:33,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:33,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:33,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 383 transitions, 4913 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 11:48:33,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:33,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:33,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:33,927 INFO L124 PetriNetUnfolderBase]: 967/1663 cut-off events. [2024-06-14 11:48:33,927 INFO L125 PetriNetUnfolderBase]: For 164562/164562 co-relation queries the response was YES. [2024-06-14 11:48:33,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13629 conditions, 1663 events. 967/1663 cut-off events. For 164562/164562 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8995 event pairs, 124 based on Foata normal form. 4/1666 useless extension candidates. Maximal degree in co-relation 13485. Up to 1470 conditions per place. [2024-06-14 11:48:33,945 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 324 selfloop transitions, 80 changer transitions 0/406 dead transitions. [2024-06-14 11:48:33,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 406 transitions, 5789 flow [2024-06-14 11:48:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:48:33,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:48:33,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-14 11:48:33,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-14 11:48:33,947 INFO L175 Difference]: Start difference. First operand has 323 places, 383 transitions, 4913 flow. Second operand 13 states and 145 transitions. [2024-06-14 11:48:33,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 406 transitions, 5789 flow [2024-06-14 11:48:34,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 406 transitions, 5691 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:34,514 INFO L231 Difference]: Finished difference. Result has 329 places, 384 transitions, 4999 flow [2024-06-14 11:48:34,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4999, PETRI_PLACES=329, PETRI_TRANSITIONS=384} [2024-06-14 11:48:34,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-14 11:48:34,515 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 384 transitions, 4999 flow [2024-06-14 11:48:34,515 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 11:48:34,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:34,515 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 11:48:34,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 11:48:34,515 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 11:48:34,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2056028812, now seen corresponding path program 1 times [2024-06-14 11:48:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359951702] [2024-06-14 11:48:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:34,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:36,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359951702] [2024-06-14 11:48:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359951702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:36,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:36,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:36,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991880306] [2024-06-14 11:48:36,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:36,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:36,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:36,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:36,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:36,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:36,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 384 transitions, 4999 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 11:48:36,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:36,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:36,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:37,014 INFO L124 PetriNetUnfolderBase]: 961/1655 cut-off events. [2024-06-14 11:48:37,014 INFO L125 PetriNetUnfolderBase]: For 161492/161492 co-relation queries the response was YES. [2024-06-14 11:48:37,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13260 conditions, 1655 events. 961/1655 cut-off events. For 161492/161492 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8974 event pairs, 117 based on Foata normal form. 8/1662 useless extension candidates. Maximal degree in co-relation 13114. Up to 1514 conditions per place. [2024-06-14 11:48:37,035 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 346 selfloop transitions, 56 changer transitions 0/404 dead transitions. [2024-06-14 11:48:37,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 404 transitions, 5903 flow [2024-06-14 11:48:37,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:48:37,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 11:48:37,037 INFO L175 Difference]: Start difference. First operand has 329 places, 384 transitions, 4999 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:48:37,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 404 transitions, 5903 flow [2024-06-14 11:48:37,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 404 transitions, 5657 flow, removed 36 selfloop flow, removed 11 redundant places. [2024-06-14 11:48:37,612 INFO L231 Difference]: Finished difference. Result has 329 places, 386 transitions, 4931 flow [2024-06-14 11:48:37,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4753, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4931, PETRI_PLACES=329, PETRI_TRANSITIONS=386} [2024-06-14 11:48:37,613 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-14 11:48:37,613 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 386 transitions, 4931 flow [2024-06-14 11:48:37,613 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 11:48:37,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:37,613 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 11:48:37,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 11:48:37,613 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 11:48:37,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash -572321993, now seen corresponding path program 4 times [2024-06-14 11:48:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:37,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426197445] [2024-06-14 11:48:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:39,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:39,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426197445] [2024-06-14 11:48:39,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426197445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:39,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:39,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458202592] [2024-06-14 11:48:39,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:39,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:39,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:39,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 386 transitions, 4931 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 11:48:39,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:39,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:39,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:39,744 INFO L124 PetriNetUnfolderBase]: 958/1650 cut-off events. [2024-06-14 11:48:39,745 INFO L125 PetriNetUnfolderBase]: For 136255/136255 co-relation queries the response was YES. [2024-06-14 11:48:39,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12974 conditions, 1650 events. 958/1650 cut-off events. For 136255/136255 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8921 event pairs, 127 based on Foata normal form. 2/1651 useless extension candidates. Maximal degree in co-relation 12828. Up to 1501 conditions per place. [2024-06-14 11:48:39,762 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 355 selfloop transitions, 51 changer transitions 0/408 dead transitions. [2024-06-14 11:48:39,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 408 transitions, 5829 flow [2024-06-14 11:48:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:39,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:48:39,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 11:48:39,764 INFO L175 Difference]: Start difference. First operand has 329 places, 386 transitions, 4931 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:48:39,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 408 transitions, 5829 flow [2024-06-14 11:48:40,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 408 transitions, 5693 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:40,491 INFO L231 Difference]: Finished difference. Result has 332 places, 386 transitions, 4901 flow [2024-06-14 11:48:40,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4901, PETRI_PLACES=332, PETRI_TRANSITIONS=386} [2024-06-14 11:48:40,491 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-14 11:48:40,492 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 386 transitions, 4901 flow [2024-06-14 11:48:40,492 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 11:48:40,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:40,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:40,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 11:48:40,492 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 11:48:40,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1340659912, now seen corresponding path program 1 times [2024-06-14 11:48:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:40,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732066353] [2024-06-14 11:48:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:42,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:42,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732066353] [2024-06-14 11:48:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732066353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:42,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158164559] [2024-06-14 11:48:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:42,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:42,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:42,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 386 transitions, 4901 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 11:48:42,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:42,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:42,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:42,573 INFO L124 PetriNetUnfolderBase]: 962/1658 cut-off events. [2024-06-14 11:48:42,574 INFO L125 PetriNetUnfolderBase]: For 139314/139314 co-relation queries the response was YES. [2024-06-14 11:48:42,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12981 conditions, 1658 events. 962/1658 cut-off events. For 139314/139314 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9030 event pairs, 89 based on Foata normal form. 2/1659 useless extension candidates. Maximal degree in co-relation 12834. Up to 1426 conditions per place. [2024-06-14 11:48:42,592 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 327 selfloop transitions, 76 changer transitions 0/405 dead transitions. [2024-06-14 11:48:42,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 405 transitions, 5777 flow [2024-06-14 11:48:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:42,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:48:42,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 11:48:42,593 INFO L175 Difference]: Start difference. First operand has 332 places, 386 transitions, 4901 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:48:42,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 405 transitions, 5777 flow [2024-06-14 11:48:43,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 405 transitions, 5594 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:48:43,138 INFO L231 Difference]: Finished difference. Result has 331 places, 387 transitions, 4891 flow [2024-06-14 11:48:43,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4718, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4891, PETRI_PLACES=331, PETRI_TRANSITIONS=387} [2024-06-14 11:48:43,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-14 11:48:43,138 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 387 transitions, 4891 flow [2024-06-14 11:48:43,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:43,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:43,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:43,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 11:48:43,139 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 11:48:43,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:43,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1287545224, now seen corresponding path program 2 times [2024-06-14 11:48:43,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:43,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609715394] [2024-06-14 11:48:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:43,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609715394] [2024-06-14 11:48:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609715394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:44,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:44,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:44,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327978884] [2024-06-14 11:48:44,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:44,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:44,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:44,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:45,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:45,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 387 transitions, 4891 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 11:48:45,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:45,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:45,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:45,935 INFO L124 PetriNetUnfolderBase]: 968/1668 cut-off events. [2024-06-14 11:48:45,935 INFO L125 PetriNetUnfolderBase]: For 144052/144052 co-relation queries the response was YES. [2024-06-14 11:48:45,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13060 conditions, 1668 events. 968/1668 cut-off events. For 144052/144052 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9128 event pairs, 77 based on Foata normal form. 2/1669 useless extension candidates. Maximal degree in co-relation 12914. Up to 1109 conditions per place. [2024-06-14 11:48:45,952 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 164 changer transitions 0/408 dead transitions. [2024-06-14 11:48:45,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 408 transitions, 5819 flow [2024-06-14 11:48:45,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:45,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:48:45,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 11:48:45,953 INFO L175 Difference]: Start difference. First operand has 331 places, 387 transitions, 4891 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:48:45,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 408 transitions, 5819 flow [2024-06-14 11:48:46,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 408 transitions, 5664 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:46,535 INFO L231 Difference]: Finished difference. Result has 335 places, 389 transitions, 5126 flow [2024-06-14 11:48:46,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5126, PETRI_PLACES=335, PETRI_TRANSITIONS=389} [2024-06-14 11:48:46,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-14 11:48:46,535 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 389 transitions, 5126 flow [2024-06-14 11:48:46,536 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 11:48:46,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:46,536 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 11:48:46,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 11:48:46,536 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 11:48:46,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1287752614, now seen corresponding path program 3 times [2024-06-14 11:48:46,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:46,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161766885] [2024-06-14 11:48:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:48,152 INFO 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 11:48:48,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:48,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161766885] [2024-06-14 11:48:48,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161766885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:48,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:48,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:48,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621413232] [2024-06-14 11:48:48,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:48,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:48,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:48,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:48,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:48,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:48,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 389 transitions, 5126 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 11:48:48,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:48,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:48,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:48,911 INFO L124 PetriNetUnfolderBase]: 984/1694 cut-off events. [2024-06-14 11:48:48,911 INFO L125 PetriNetUnfolderBase]: For 156242/156242 co-relation queries the response was YES. [2024-06-14 11:48:48,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13721 conditions, 1694 events. 984/1694 cut-off events. For 156242/156242 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9277 event pairs, 77 based on Foata normal form. 2/1695 useless extension candidates. Maximal degree in co-relation 13574. Up to 1109 conditions per place. [2024-06-14 11:48:48,932 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 162 changer transitions 0/414 dead transitions. [2024-06-14 11:48:48,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 414 transitions, 6300 flow [2024-06-14 11:48:48,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 11:48:48,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 11:48:48,933 INFO L175 Difference]: Start difference. First operand has 335 places, 389 transitions, 5126 flow. Second operand 11 states and 142 transitions. [2024-06-14 11:48:48,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 414 transitions, 6300 flow [2024-06-14 11:48:49,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 414 transitions, 5985 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:49,546 INFO L231 Difference]: Finished difference. Result has 340 places, 393 transitions, 5262 flow [2024-06-14 11:48:49,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4811, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5262, PETRI_PLACES=340, PETRI_TRANSITIONS=393} [2024-06-14 11:48:49,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-14 11:48:49,546 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 393 transitions, 5262 flow [2024-06-14 11:48:49,546 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 11:48:49,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:49,546 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 11:48:49,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 11:48:49,547 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 11:48:49,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:49,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1293109414, now seen corresponding path program 4 times [2024-06-14 11:48:49,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:49,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103876835] [2024-06-14 11:48:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:49,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:51,413 INFO 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 11:48:51,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:51,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103876835] [2024-06-14 11:48:51,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103876835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:51,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:51,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:51,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414724585] [2024-06-14 11:48:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:51,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:51,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:51,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:51,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:51,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:51,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 393 transitions, 5262 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 11:48:51,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:51,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:51,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:52,284 INFO L124 PetriNetUnfolderBase]: 990/1704 cut-off events. [2024-06-14 11:48:52,284 INFO L125 PetriNetUnfolderBase]: For 160319/160319 co-relation queries the response was YES. [2024-06-14 11:48:52,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13889 conditions, 1704 events. 990/1704 cut-off events. For 160319/160319 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9327 event pairs, 174 based on Foata normal form. 2/1705 useless extension candidates. Maximal degree in co-relation 13740. Up to 1356 conditions per place. [2024-06-14 11:48:52,299 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 314 selfloop transitions, 97 changer transitions 0/413 dead transitions. [2024-06-14 11:48:52,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 413 transitions, 6210 flow [2024-06-14 11:48:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:48:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:48:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 11:48:52,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:48:52,301 INFO L175 Difference]: Start difference. First operand has 340 places, 393 transitions, 5262 flow. Second operand 12 states and 144 transitions. [2024-06-14 11:48:52,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 413 transitions, 6210 flow [2024-06-14 11:48:52,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 413 transitions, 5833 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 11:48:52,942 INFO L231 Difference]: Finished difference. Result has 343 places, 395 transitions, 5148 flow [2024-06-14 11:48:52,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4885, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5148, PETRI_PLACES=343, PETRI_TRANSITIONS=395} [2024-06-14 11:48:52,943 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 11:48:52,943 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 395 transitions, 5148 flow [2024-06-14 11:48:52,943 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 11:48:52,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:52,943 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 11:48:52,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 11:48:52,944 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 11:48:52,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1287752769, now seen corresponding path program 5 times [2024-06-14 11:48:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:52,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324201266] [2024-06-14 11:48:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:54,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:54,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324201266] [2024-06-14 11:48:54,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324201266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:54,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:54,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:54,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938713871] [2024-06-14 11:48:54,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:54,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:54,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:54,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:54,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:54,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:54,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 395 transitions, 5148 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 11:48:54,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:54,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:54,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:54,954 INFO L124 PetriNetUnfolderBase]: 994/1712 cut-off events. [2024-06-14 11:48:54,955 INFO L125 PetriNetUnfolderBase]: For 161545/161545 co-relation queries the response was YES. [2024-06-14 11:48:54,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13713 conditions, 1712 events. 994/1712 cut-off events. For 161545/161545 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9363 event pairs, 114 based on Foata normal form. 2/1713 useless extension candidates. Maximal degree in co-relation 13564. Up to 1388 conditions per place. [2024-06-14 11:48:54,977 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 292 selfloop transitions, 119 changer transitions 0/413 dead transitions. [2024-06-14 11:48:54,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 413 transitions, 6030 flow [2024-06-14 11:48:54,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:48:54,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:48:54,978 INFO L175 Difference]: Start difference. First operand has 343 places, 395 transitions, 5148 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:48:54,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 413 transitions, 6030 flow [2024-06-14 11:48:55,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 413 transitions, 5787 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-14 11:48:55,677 INFO L231 Difference]: Finished difference. Result has 344 places, 396 transitions, 5161 flow [2024-06-14 11:48:55,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4905, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5161, PETRI_PLACES=344, PETRI_TRANSITIONS=396} [2024-06-14 11:48:55,678 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-14 11:48:55,678 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 396 transitions, 5161 flow [2024-06-14 11:48:55,678 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 11:48:55,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:55,678 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 11:48:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 11:48:55,678 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 11:48:55,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1293263019, now seen corresponding path program 6 times [2024-06-14 11:48:55,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:55,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655444938] [2024-06-14 11:48:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:55,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:56,753 INFO 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 11:48:56,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:56,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655444938] [2024-06-14 11:48:56,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655444938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:56,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:56,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:56,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164795541] [2024-06-14 11:48:56,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:56,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:56,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:56,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:56,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:56,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:56,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 396 transitions, 5161 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 11:48:56,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:56,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:56,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:57,400 INFO L124 PetriNetUnfolderBase]: 1005/1733 cut-off events. [2024-06-14 11:48:57,400 INFO L125 PetriNetUnfolderBase]: For 172864/172864 co-relation queries the response was YES. [2024-06-14 11:48:57,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13997 conditions, 1733 events. 1005/1733 cut-off events. For 172864/172864 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9502 event pairs, 115 based on Foata normal form. 2/1734 useless extension candidates. Maximal degree in co-relation 13847. Up to 1217 conditions per place. [2024-06-14 11:48:57,421 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 139 changer transitions 0/417 dead transitions. [2024-06-14 11:48:57,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 417 transitions, 6257 flow [2024-06-14 11:48:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 11:48:57,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 11:48:57,423 INFO L175 Difference]: Start difference. First operand has 344 places, 396 transitions, 5161 flow. Second operand 10 states and 131 transitions. [2024-06-14 11:48:57,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 417 transitions, 6257 flow [2024-06-14 11:48:58,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 417 transitions, 6001 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 11:48:58,150 INFO L231 Difference]: Finished difference. Result has 345 places, 398 transitions, 5217 flow [2024-06-14 11:48:58,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4905, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5217, PETRI_PLACES=345, PETRI_TRANSITIONS=398} [2024-06-14 11:48:58,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-14 11:48:58,150 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 398 transitions, 5217 flow [2024-06-14 11:48:58,151 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 11:48:58,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:58,151 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 11:48:58,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 11:48:58,151 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 11:48:58,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:58,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1287747034, now seen corresponding path program 5 times [2024-06-14 11:48:58,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:58,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142517675] [2024-06-14 11:48:58,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:58,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:59,734 INFO 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 11:48:59,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:59,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142517675] [2024-06-14 11:48:59,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142517675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:59,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:59,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412649468] [2024-06-14 11:48:59,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:59,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:59,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:59,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:59,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:48:59,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 398 transitions, 5217 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 11:48:59,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:59,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:48:59,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:00,608 INFO L124 PetriNetUnfolderBase]: 1001/1727 cut-off events. [2024-06-14 11:49:00,608 INFO L125 PetriNetUnfolderBase]: For 168274/168274 co-relation queries the response was YES. [2024-06-14 11:49:00,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13835 conditions, 1727 events. 1001/1727 cut-off events. For 168274/168274 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9489 event pairs, 67 based on Foata normal form. 2/1728 useless extension candidates. Maximal degree in co-relation 13684. Up to 1143 conditions per place. [2024-06-14 11:49:00,630 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 252 selfloop transitions, 164 changer transitions 0/418 dead transitions. [2024-06-14 11:49:00,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 418 transitions, 6119 flow [2024-06-14 11:49:00,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 11:49:00,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 11:49:00,631 INFO L175 Difference]: Start difference. First operand has 345 places, 398 transitions, 5217 flow. Second operand 11 states and 141 transitions. [2024-06-14 11:49:00,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 418 transitions, 6119 flow [2024-06-14 11:49:01,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 418 transitions, 5905 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-14 11:49:01,336 INFO L231 Difference]: Finished difference. Result has 350 places, 398 transitions, 5337 flow [2024-06-14 11:49:01,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5003, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5337, PETRI_PLACES=350, PETRI_TRANSITIONS=398} [2024-06-14 11:49:01,337 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-14 11:49:01,337 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 398 transitions, 5337 flow [2024-06-14 11:49:01,337 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 11:49:01,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:01,337 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 11:49:01,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 11:49:01,337 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 11:49:01,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:01,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1293259144, now seen corresponding path program 6 times [2024-06-14 11:49:01,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:01,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089626366] [2024-06-14 11:49:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:01,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:02,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:02,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089626366] [2024-06-14 11:49:02,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089626366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:02,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:02,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:02,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202997933] [2024-06-14 11:49:02,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:02,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:02,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:02,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:02,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 398 transitions, 5337 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 11:49:02,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:02,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:02,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:03,406 INFO L124 PetriNetUnfolderBase]: 1020/1758 cut-off events. [2024-06-14 11:49:03,406 INFO L125 PetriNetUnfolderBase]: For 181334/181334 co-relation queries the response was YES. [2024-06-14 11:49:03,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14586 conditions, 1758 events. 1020/1758 cut-off events. For 181334/181334 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9671 event pairs, 71 based on Foata normal form. 2/1759 useless extension candidates. Maximal degree in co-relation 14433. Up to 1092 conditions per place. [2024-06-14 11:49:03,427 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 180 changer transitions 0/427 dead transitions. [2024-06-14 11:49:03,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 427 transitions, 6595 flow [2024-06-14 11:49:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:03,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 11:49:03,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-14 11:49:03,428 INFO L175 Difference]: Start difference. First operand has 350 places, 398 transitions, 5337 flow. Second operand 11 states and 146 transitions. [2024-06-14 11:49:03,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 427 transitions, 6595 flow [2024-06-14 11:49:04,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 427 transitions, 6253 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:49:04,263 INFO L231 Difference]: Finished difference. Result has 353 places, 406 transitions, 5628 flow [2024-06-14 11:49:04,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4995, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5628, PETRI_PLACES=353, PETRI_TRANSITIONS=406} [2024-06-14 11:49:04,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-14 11:49:04,265 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 406 transitions, 5628 flow [2024-06-14 11:49:04,265 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 11:49:04,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:04,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:04,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 11:49:04,265 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 11:49:04,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1334937901, now seen corresponding path program 7 times [2024-06-14 11:49:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:04,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83476549] [2024-06-14 11:49:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:05,764 INFO 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 11:49:05,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:05,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83476549] [2024-06-14 11:49:05,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83476549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:05,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:05,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124045021] [2024-06-14 11:49:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:05,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:05,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:05,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:05,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 406 transitions, 5628 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 11:49:05,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:05,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:05,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:06,534 INFO L124 PetriNetUnfolderBase]: 1024/1766 cut-off events. [2024-06-14 11:49:06,534 INFO L125 PetriNetUnfolderBase]: For 185816/185816 co-relation queries the response was YES. [2024-06-14 11:49:06,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14950 conditions, 1766 events. 1024/1766 cut-off events. For 185816/185816 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9768 event pairs, 117 based on Foata normal form. 2/1767 useless extension candidates. Maximal degree in co-relation 14794. Up to 1429 conditions per place. [2024-06-14 11:49:06,556 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 303 selfloop transitions, 119 changer transitions 0/424 dead transitions. [2024-06-14 11:49:06,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 424 transitions, 6530 flow [2024-06-14 11:49:06,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:49:06,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:49:06,558 INFO L175 Difference]: Start difference. First operand has 353 places, 406 transitions, 5628 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:49:06,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 424 transitions, 6530 flow [2024-06-14 11:49:07,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 424 transitions, 6391 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-14 11:49:07,310 INFO L231 Difference]: Finished difference. Result has 360 places, 407 transitions, 5743 flow [2024-06-14 11:49:07,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5489, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5743, PETRI_PLACES=360, PETRI_TRANSITIONS=407} [2024-06-14 11:49:07,310 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-14 11:49:07,310 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 407 transitions, 5743 flow [2024-06-14 11:49:07,310 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 11:49:07,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:07,311 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 11:49:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 11:49:07,311 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 11:49:07,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1316648025, now seen corresponding path program 8 times [2024-06-14 11:49:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409146931] [2024-06-14 11:49:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:07,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:08,690 INFO 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 11:49:08,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:08,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409146931] [2024-06-14 11:49:08,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409146931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:08,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:08,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:08,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962995706] [2024-06-14 11:49:08,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:08,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:08,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:08,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:08,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:08,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:08,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 407 transitions, 5743 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 11:49:08,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:08,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:08,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:09,358 INFO L124 PetriNetUnfolderBase]: 1021/1761 cut-off events. [2024-06-14 11:49:09,358 INFO L125 PetriNetUnfolderBase]: For 180098/180098 co-relation queries the response was YES. [2024-06-14 11:49:09,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14920 conditions, 1761 events. 1021/1761 cut-off events. For 180098/180098 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9735 event pairs, 114 based on Foata normal form. 2/1762 useless extension candidates. Maximal degree in co-relation 14762. Up to 1437 conditions per place. [2024-06-14 11:49:09,381 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 307 selfloop transitions, 115 changer transitions 0/424 dead transitions. [2024-06-14 11:49:09,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 424 transitions, 6635 flow [2024-06-14 11:49:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:49:09,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:49:09,383 INFO L175 Difference]: Start difference. First operand has 360 places, 407 transitions, 5743 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:49:09,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 424 transitions, 6635 flow [2024-06-14 11:49:10,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 424 transitions, 6397 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 11:49:10,121 INFO L231 Difference]: Finished difference. Result has 361 places, 407 transitions, 5739 flow [2024-06-14 11:49:10,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5739, PETRI_PLACES=361, PETRI_TRANSITIONS=407} [2024-06-14 11:49:10,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-14 11:49:10,121 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 407 transitions, 5739 flow [2024-06-14 11:49:10,122 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 11:49:10,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:10,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:10,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 11:49:10,122 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 11:49:10,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1293114994, now seen corresponding path program 7 times [2024-06-14 11:49:10,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:10,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483852352] [2024-06-14 11:49:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:11,534 INFO 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 11:49:11,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483852352] [2024-06-14 11:49:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483852352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:11,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:11,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:11,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533221514] [2024-06-14 11:49:11,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:11,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:11,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:11,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:11,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 407 transitions, 5739 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 11:49:11,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:11,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:11,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:12,374 INFO L124 PetriNetUnfolderBase]: 1017/1755 cut-off events. [2024-06-14 11:49:12,374 INFO L125 PetriNetUnfolderBase]: For 175097/175097 co-relation queries the response was YES. [2024-06-14 11:49:12,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14693 conditions, 1755 events. 1017/1755 cut-off events. For 175097/175097 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9754 event pairs, 82 based on Foata normal form. 2/1756 useless extension candidates. Maximal degree in co-relation 14537. Up to 1178 conditions per place. [2024-06-14 11:49:12,392 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 158 changer transitions 0/429 dead transitions. [2024-06-14 11:49:12,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 429 transitions, 6863 flow [2024-06-14 11:49:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:12,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 11:49:12,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-14 11:49:12,393 INFO L175 Difference]: Start difference. First operand has 361 places, 407 transitions, 5739 flow. Second operand 11 states and 145 transitions. [2024-06-14 11:49:12,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 429 transitions, 6863 flow [2024-06-14 11:49:13,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 429 transitions, 6575 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:49:13,012 INFO L231 Difference]: Finished difference. Result has 360 places, 407 transitions, 5772 flow [2024-06-14 11:49:13,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5451, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5772, PETRI_PLACES=360, PETRI_TRANSITIONS=407} [2024-06-14 11:49:13,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-14 11:49:13,012 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 407 transitions, 5772 flow [2024-06-14 11:49:13,012 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 11:49:13,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:13,013 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 11:49:13,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 11:49:13,013 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 11:49:13,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2120187257, now seen corresponding path program 9 times [2024-06-14 11:49:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:13,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539011846] [2024-06-14 11:49:13,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:13,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:14,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:14,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539011846] [2024-06-14 11:49:14,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539011846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:14,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:14,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:14,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144074408] [2024-06-14 11:49:14,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:14,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:14,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:14,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:14,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:14,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:14,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 407 transitions, 5772 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 11:49:14,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:14,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:14,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:14,982 INFO L124 PetriNetUnfolderBase]: 1064/1848 cut-off events. [2024-06-14 11:49:14,982 INFO L125 PetriNetUnfolderBase]: For 243795/243795 co-relation queries the response was YES. [2024-06-14 11:49:14,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16643 conditions, 1848 events. 1064/1848 cut-off events. For 243795/243795 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10297 event pairs, 163 based on Foata normal form. 2/1849 useless extension candidates. Maximal degree in co-relation 16486. Up to 1548 conditions per place. [2024-06-14 11:49:15,005 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 365 selfloop transitions, 69 changer transitions 0/436 dead transitions. [2024-06-14 11:49:15,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 436 transitions, 7012 flow [2024-06-14 11:49:15,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:15,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 11:49:15,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:49:15,007 INFO L175 Difference]: Start difference. First operand has 360 places, 407 transitions, 5772 flow. Second operand 11 states and 143 transitions. [2024-06-14 11:49:15,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 436 transitions, 7012 flow [2024-06-14 11:49:15,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 436 transitions, 6513 flow, removed 19 selfloop flow, removed 12 redundant places. [2024-06-14 11:49:15,975 INFO L231 Difference]: Finished difference. Result has 359 places, 409 transitions, 5449 flow [2024-06-14 11:49:15,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5273, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5449, PETRI_PLACES=359, PETRI_TRANSITIONS=409} [2024-06-14 11:49:15,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-14 11:49:15,976 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 409 transitions, 5449 flow [2024-06-14 11:49:15,977 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 11:49:15,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:15,977 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 11:49:15,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 11:49:15,977 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 11:49:15,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:15,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2120039387, now seen corresponding path program 10 times [2024-06-14 11:49:15,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:15,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481768540] [2024-06-14 11:49:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:15,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:17,851 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 11:49:17,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:17,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481768540] [2024-06-14 11:49:17,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481768540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:17,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:17,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:17,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096191158] [2024-06-14 11:49:17,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:17,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:17,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:17,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:17,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:17,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:18,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 409 transitions, 5449 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 11:49:18,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:18,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:18,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:18,600 INFO L124 PetriNetUnfolderBase]: 1071/1861 cut-off events. [2024-06-14 11:49:18,600 INFO L125 PetriNetUnfolderBase]: For 246747/246747 co-relation queries the response was YES. [2024-06-14 11:49:18,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16347 conditions, 1861 events. 1071/1861 cut-off events. For 246747/246747 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 10459 event pairs, 165 based on Foata normal form. 2/1862 useless extension candidates. Maximal degree in co-relation 16190. Up to 1697 conditions per place. [2024-06-14 11:49:18,624 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 366 selfloop transitions, 63 changer transitions 0/431 dead transitions. [2024-06-14 11:49:18,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 431 transitions, 6412 flow [2024-06-14 11:49:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:18,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:49:18,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 11:49:18,628 INFO L175 Difference]: Start difference. First operand has 359 places, 409 transitions, 5449 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:49:18,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 431 transitions, 6412 flow [2024-06-14 11:49:19,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 431 transitions, 6325 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:19,678 INFO L231 Difference]: Finished difference. Result has 366 places, 412 transitions, 5545 flow [2024-06-14 11:49:19,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5368, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5545, PETRI_PLACES=366, PETRI_TRANSITIONS=412} [2024-06-14 11:49:19,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-14 11:49:19,679 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 412 transitions, 5545 flow [2024-06-14 11:49:19,680 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 11:49:19,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:19,680 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 11:49:19,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 11:49:19,680 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 11:49:19,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:19,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1913112806, now seen corresponding path program 2 times [2024-06-14 11:49:19,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:19,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276111475] [2024-06-14 11:49:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:19,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:21,039 INFO 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 11:49:21,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:21,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276111475] [2024-06-14 11:49:21,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276111475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:21,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:21,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:21,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420395065] [2024-06-14 11:49:21,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:21,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:21,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:21,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:21,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:21,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 412 transitions, 5545 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 11:49:21,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:21,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:21,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:21,748 INFO L124 PetriNetUnfolderBase]: 1075/1869 cut-off events. [2024-06-14 11:49:21,749 INFO L125 PetriNetUnfolderBase]: For 251795/251795 co-relation queries the response was YES. [2024-06-14 11:49:21,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16524 conditions, 1869 events. 1075/1869 cut-off events. For 251795/251795 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 10503 event pairs, 163 based on Foata normal form. 2/1870 useless extension candidates. Maximal degree in co-relation 16364. Up to 1767 conditions per place. [2024-06-14 11:49:21,768 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 392 selfloop transitions, 37 changer transitions 0/431 dead transitions. [2024-06-14 11:49:21,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 431 transitions, 6507 flow [2024-06-14 11:49:21,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 11:49:21,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-14 11:49:21,769 INFO L175 Difference]: Start difference. First operand has 366 places, 412 transitions, 5545 flow. Second operand 10 states and 117 transitions. [2024-06-14 11:49:21,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 431 transitions, 6507 flow [2024-06-14 11:49:22,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 431 transitions, 6322 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:22,810 INFO L231 Difference]: Finished difference. Result has 368 places, 415 transitions, 5507 flow [2024-06-14 11:49:22,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5507, PETRI_PLACES=368, PETRI_TRANSITIONS=415} [2024-06-14 11:49:22,810 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-14 11:49:22,810 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 415 transitions, 5507 flow [2024-06-14 11:49:22,810 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 11:49:22,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:22,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:22,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 11:49:22,811 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 11:49:22,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash -453413441, now seen corresponding path program 11 times [2024-06-14 11:49:22,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:22,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052131897] [2024-06-14 11:49:22,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:22,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:23,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:23,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052131897] [2024-06-14 11:49:23,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052131897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:23,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:23,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:23,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126856146] [2024-06-14 11:49:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:23,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:23,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:23,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:23,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:23,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:23,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 415 transitions, 5507 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 11:49:23,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:23,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:23,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:24,556 INFO L124 PetriNetUnfolderBase]: 1079/1877 cut-off events. [2024-06-14 11:49:24,556 INFO L125 PetriNetUnfolderBase]: For 256598/256598 co-relation queries the response was YES. [2024-06-14 11:49:24,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16461 conditions, 1877 events. 1079/1877 cut-off events. For 256598/256598 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 10583 event pairs, 165 based on Foata normal form. 2/1878 useless extension candidates. Maximal degree in co-relation 16300. Up to 1675 conditions per place. [2024-06-14 11:49:24,581 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 366 selfloop transitions, 66 changer transitions 0/434 dead transitions. [2024-06-14 11:49:24,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 434 transitions, 6447 flow [2024-06-14 11:49:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 11:49:24,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 11:49:24,582 INFO L175 Difference]: Start difference. First operand has 368 places, 415 transitions, 5507 flow. Second operand 10 states and 126 transitions. [2024-06-14 11:49:24,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 434 transitions, 6447 flow [2024-06-14 11:49:25,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 434 transitions, 6370 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 11:49:25,509 INFO L231 Difference]: Finished difference. Result has 371 places, 416 transitions, 5586 flow [2024-06-14 11:49:25,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5430, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5586, PETRI_PLACES=371, PETRI_TRANSITIONS=416} [2024-06-14 11:49:25,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-14 11:49:25,510 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 416 transitions, 5586 flow [2024-06-14 11:49:25,510 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 11:49:25,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:25,510 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 11:49:25,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 11:49:25,510 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 11:49:25,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:25,511 INFO L85 PathProgramCache]: Analyzing trace with hash -253752020, now seen corresponding path program 3 times [2024-06-14 11:49:25,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:25,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643911972] [2024-06-14 11:49:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:25,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:27,261 INFO 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 11:49:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643911972] [2024-06-14 11:49:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643911972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:27,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:27,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:27,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130212738] [2024-06-14 11:49:27,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:27,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:27,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:27,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:27,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:27,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:27,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 416 transitions, 5586 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 11:49:27,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:27,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:27,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:27,982 INFO L124 PetriNetUnfolderBase]: 1083/1885 cut-off events. [2024-06-14 11:49:27,982 INFO L125 PetriNetUnfolderBase]: For 261894/261894 co-relation queries the response was YES. [2024-06-14 11:49:28,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16622 conditions, 1885 events. 1083/1885 cut-off events. For 261894/261894 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 10626 event pairs, 161 based on Foata normal form. 2/1886 useless extension candidates. Maximal degree in co-relation 16460. Up to 1767 conditions per place. [2024-06-14 11:49:28,010 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 389 selfloop transitions, 43 changer transitions 0/434 dead transitions. [2024-06-14 11:49:28,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 434 transitions, 6524 flow [2024-06-14 11:49:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:49:28,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:49:28,011 INFO L175 Difference]: Start difference. First operand has 371 places, 416 transitions, 5586 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:49:28,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 434 transitions, 6524 flow [2024-06-14 11:49:28,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 434 transitions, 6382 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:28,970 INFO L231 Difference]: Finished difference. Result has 373 places, 417 transitions, 5555 flow [2024-06-14 11:49:28,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5444, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5555, PETRI_PLACES=373, PETRI_TRANSITIONS=417} [2024-06-14 11:49:28,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-14 11:49:28,971 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 417 transitions, 5555 flow [2024-06-14 11:49:28,971 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 11:49:28,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:28,971 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 11:49:28,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 11:49:28,971 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 11:49:28,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:28,971 INFO L85 PathProgramCache]: Analyzing trace with hash -447691430, now seen corresponding path program 4 times [2024-06-14 11:49:28,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:28,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658878191] [2024-06-14 11:49:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:28,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658878191] [2024-06-14 11:49:30,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658878191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:30,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:30,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:30,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161859800] [2024-06-14 11:49:30,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:30,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:30,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:30,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 417 transitions, 5555 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 11:49:30,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:30,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:30,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:31,077 INFO L124 PetriNetUnfolderBase]: 1087/1893 cut-off events. [2024-06-14 11:49:31,077 INFO L125 PetriNetUnfolderBase]: For 262012/262012 co-relation queries the response was YES. [2024-06-14 11:49:31,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16615 conditions, 1893 events. 1087/1893 cut-off events. For 262012/262012 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 10729 event pairs, 157 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 16452. Up to 1751 conditions per place. [2024-06-14 11:49:31,103 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 382 selfloop transitions, 51 changer transitions 0/435 dead transitions. [2024-06-14 11:49:31,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 435 transitions, 6497 flow [2024-06-14 11:49:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 11:49:31,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 11:49:31,104 INFO L175 Difference]: Start difference. First operand has 373 places, 417 transitions, 5555 flow. Second operand 10 states and 122 transitions. [2024-06-14 11:49:31,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 435 transitions, 6497 flow [2024-06-14 11:49:32,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 435 transitions, 6398 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:32,196 INFO L231 Difference]: Finished difference. Result has 375 places, 418 transitions, 5585 flow [2024-06-14 11:49:32,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5456, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5585, PETRI_PLACES=375, PETRI_TRANSITIONS=418} [2024-06-14 11:49:32,196 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-14 11:49:32,196 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 418 transitions, 5585 flow [2024-06-14 11:49:32,196 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 11:49:32,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:32,197 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 11:49:32,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 11:49:32,197 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 11:49:32,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:32,197 INFO L85 PathProgramCache]: Analyzing trace with hash -453263556, now seen corresponding path program 8 times [2024-06-14 11:49:32,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:32,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161849771] [2024-06-14 11:49:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:32,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:33,459 INFO 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 11:49:33,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:33,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161849771] [2024-06-14 11:49:33,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161849771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:33,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:33,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:33,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770675246] [2024-06-14 11:49:33,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:33,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:33,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:33,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:33,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 418 transitions, 5585 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 11:49:33,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:33,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:33,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:34,156 INFO L124 PetriNetUnfolderBase]: 1083/1887 cut-off events. [2024-06-14 11:49:34,157 INFO L125 PetriNetUnfolderBase]: For 256435/256435 co-relation queries the response was YES. [2024-06-14 11:49:34,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16425 conditions, 1887 events. 1083/1887 cut-off events. For 256435/256435 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10669 event pairs, 152 based on Foata normal form. 2/1888 useless extension candidates. Maximal degree in co-relation 16261. Up to 1531 conditions per place. [2024-06-14 11:49:34,183 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 353 selfloop transitions, 82 changer transitions 0/437 dead transitions. [2024-06-14 11:49:34,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 437 transitions, 6725 flow [2024-06-14 11:49:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 11:49:34,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-14 11:49:34,184 INFO L175 Difference]: Start difference. First operand has 375 places, 418 transitions, 5585 flow. Second operand 10 states and 129 transitions. [2024-06-14 11:49:34,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 437 transitions, 6725 flow [2024-06-14 11:49:35,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 437 transitions, 6586 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:35,304 INFO L231 Difference]: Finished difference. Result has 377 places, 418 transitions, 5622 flow [2024-06-14 11:49:35,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5446, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5622, PETRI_PLACES=377, PETRI_TRANSITIONS=418} [2024-06-14 11:49:35,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 346 predicate places. [2024-06-14 11:49:35,305 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 418 transitions, 5622 flow [2024-06-14 11:49:35,305 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 11:49:35,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:35,305 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 11:49:35,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 11:49:35,306 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 11:49:35,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:35,306 INFO L85 PathProgramCache]: Analyzing trace with hash -447699366, now seen corresponding path program 9 times [2024-06-14 11:49:35,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:35,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911511809] [2024-06-14 11:49:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:35,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:37,114 INFO 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 11:49:37,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:37,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911511809] [2024-06-14 11:49:37,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911511809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:37,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:37,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:37,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820965423] [2024-06-14 11:49:37,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:37,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:37,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:37,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:37,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 418 transitions, 5622 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 11:49:37,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:37,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:37,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:38,166 INFO L124 PetriNetUnfolderBase]: 1089/1897 cut-off events. [2024-06-14 11:49:38,166 INFO L125 PetriNetUnfolderBase]: For 261911/261911 co-relation queries the response was YES. [2024-06-14 11:49:38,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16580 conditions, 1897 events. 1089/1897 cut-off events. For 261911/261911 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10741 event pairs, 158 based on Foata normal form. 2/1898 useless extension candidates. Maximal degree in co-relation 16415. Up to 1640 conditions per place. [2024-06-14 11:49:38,189 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 357 selfloop transitions, 80 changer transitions 0/439 dead transitions. [2024-06-14 11:49:38,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 439 transitions, 6606 flow [2024-06-14 11:49:38,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:38,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:49:38,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:49:38,191 INFO L175 Difference]: Start difference. First operand has 377 places, 418 transitions, 5622 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:49:38,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 439 transitions, 6606 flow [2024-06-14 11:49:39,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 439 transitions, 6432 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:39,260 INFO L231 Difference]: Finished difference. Result has 379 places, 420 transitions, 5660 flow [2024-06-14 11:49:39,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5452, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5660, PETRI_PLACES=379, PETRI_TRANSITIONS=420} [2024-06-14 11:49:39,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 348 predicate places. [2024-06-14 11:49:39,261 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 420 transitions, 5660 flow [2024-06-14 11:49:39,261 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 11:49:39,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:39,262 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 11:49:39,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 11:49:39,262 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 11:49:39,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:39,262 INFO L85 PathProgramCache]: Analyzing trace with hash -246333410, now seen corresponding path program 5 times [2024-06-14 11:49:39,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:39,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23258165] [2024-06-14 11:49:39,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:39,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:40,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:40,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23258165] [2024-06-14 11:49:40,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23258165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:40,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:40,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866057403] [2024-06-14 11:49:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:40,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:40,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:40,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:40,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 420 transitions, 5660 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 11:49:40,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:40,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:40,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:41,385 INFO L124 PetriNetUnfolderBase]: 1093/1905 cut-off events. [2024-06-14 11:49:41,385 INFO L125 PetriNetUnfolderBase]: For 261822/261822 co-relation queries the response was YES. [2024-06-14 11:49:41,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16625 conditions, 1905 events. 1093/1905 cut-off events. For 261822/261822 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10789 event pairs, 168 based on Foata normal form. 2/1906 useless extension candidates. Maximal degree in co-relation 16460. Up to 1814 conditions per place. [2024-06-14 11:49:41,404 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 401 selfloop transitions, 33 changer transitions 0/436 dead transitions. [2024-06-14 11:49:41,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 436 transitions, 6592 flow [2024-06-14 11:49:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:49:41,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 11:49:41,405 INFO L175 Difference]: Start difference. First operand has 379 places, 420 transitions, 5660 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:49:41,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 436 transitions, 6592 flow [2024-06-14 11:49:42,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 436 transitions, 6408 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:42,407 INFO L231 Difference]: Finished difference. Result has 380 places, 421 transitions, 5570 flow [2024-06-14 11:49:42,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5476, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5570, PETRI_PLACES=380, PETRI_TRANSITIONS=421} [2024-06-14 11:49:42,408 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 349 predicate places. [2024-06-14 11:49:42,408 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 421 transitions, 5570 flow [2024-06-14 11:49:42,408 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 11:49:42,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:42,408 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 11:49:42,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 11:49:42,408 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 11:49:42,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:42,409 INFO L85 PathProgramCache]: Analyzing trace with hash -253759956, now seen corresponding path program 10 times [2024-06-14 11:49:42,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:42,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736805675] [2024-06-14 11:49:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:42,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:43,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:43,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736805675] [2024-06-14 11:49:43,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736805675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:43,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:43,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:43,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688392878] [2024-06-14 11:49:43,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:43,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:43,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:43,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:43,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:43,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 421 transitions, 5570 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 11:49:43,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:43,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:43,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:44,585 INFO L124 PetriNetUnfolderBase]: 1099/1915 cut-off events. [2024-06-14 11:49:44,586 INFO L125 PetriNetUnfolderBase]: For 266407/266407 co-relation queries the response was YES. [2024-06-14 11:49:44,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16596 conditions, 1915 events. 1099/1915 cut-off events. For 266407/266407 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10880 event pairs, 166 based on Foata normal form. 2/1916 useless extension candidates. Maximal degree in co-relation 16430. Up to 1740 conditions per place. [2024-06-14 11:49:44,610 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 384 selfloop transitions, 56 changer transitions 0/442 dead transitions. [2024-06-14 11:49:44,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 442 transitions, 6556 flow [2024-06-14 11:49:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:44,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:49:44,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 11:49:44,611 INFO L175 Difference]: Start difference. First operand has 380 places, 421 transitions, 5570 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:49:44,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 442 transitions, 6556 flow [2024-06-14 11:49:45,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 442 transitions, 6472 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:45,845 INFO L231 Difference]: Finished difference. Result has 383 places, 423 transitions, 5646 flow [2024-06-14 11:49:45,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5646, PETRI_PLACES=383, PETRI_TRANSITIONS=423} [2024-06-14 11:49:45,846 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 352 predicate places. [2024-06-14 11:49:45,846 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 423 transitions, 5646 flow [2024-06-14 11:49:45,846 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 11:49:45,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:45,846 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 11:49:45,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 11:49:45,846 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 11:49:45,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash -447901176, now seen corresponding path program 11 times [2024-06-14 11:49:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:45,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416262379] [2024-06-14 11:49:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:47,936 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 11:49:47,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:47,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416262379] [2024-06-14 11:49:47,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416262379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:47,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:47,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:47,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394132150] [2024-06-14 11:49:47,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:47,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:47,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:47,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:47,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:48,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:48,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 423 transitions, 5646 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 11:49:48,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:48,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:48,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:48,854 INFO L124 PetriNetUnfolderBase]: 1095/1909 cut-off events. [2024-06-14 11:49:48,854 INFO L125 PetriNetUnfolderBase]: For 260648/260648 co-relation queries the response was YES. [2024-06-14 11:49:48,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16436 conditions, 1909 events. 1095/1909 cut-off events. For 260648/260648 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10846 event pairs, 156 based on Foata normal form. 2/1910 useless extension candidates. Maximal degree in co-relation 16269. Up to 1539 conditions per place. [2024-06-14 11:49:48,874 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 358 selfloop transitions, 84 changer transitions 0/444 dead transitions. [2024-06-14 11:49:48,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 444 transitions, 6816 flow [2024-06-14 11:49:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 11:49:48,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 11:49:48,876 INFO L175 Difference]: Start difference. First operand has 383 places, 423 transitions, 5646 flow. Second operand 11 states and 144 transitions. [2024-06-14 11:49:48,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 444 transitions, 6816 flow [2024-06-14 11:49:50,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 444 transitions, 6658 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:50,015 INFO L231 Difference]: Finished difference. Result has 385 places, 423 transitions, 5662 flow [2024-06-14 11:49:50,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5488, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5662, PETRI_PLACES=385, PETRI_TRANSITIONS=423} [2024-06-14 11:49:50,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-14 11:49:50,016 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 423 transitions, 5662 flow [2024-06-14 11:49:50,016 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 11:49:50,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:50,016 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 11:49:50,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 11:49:50,016 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 11:49:50,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -253967346, now seen corresponding path program 12 times [2024-06-14 11:49:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:50,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228764512] [2024-06-14 11:49:50,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:50,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:51,425 INFO 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 11:49:51,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:51,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228764512] [2024-06-14 11:49:51,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228764512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:51,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:51,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414701235] [2024-06-14 11:49:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:51,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:51,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:51,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 423 transitions, 5662 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 11:49:51,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:51,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:51,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:52,270 INFO L124 PetriNetUnfolderBase]: 1101/1919 cut-off events. [2024-06-14 11:49:52,270 INFO L125 PetriNetUnfolderBase]: For 265893/265893 co-relation queries the response was YES. [2024-06-14 11:49:52,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16570 conditions, 1919 events. 1101/1919 cut-off events. For 265893/265893 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10881 event pairs, 161 based on Foata normal form. 2/1920 useless extension candidates. Maximal degree in co-relation 16402. Up to 1704 conditions per place. [2024-06-14 11:49:52,296 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 382 selfloop transitions, 60 changer transitions 0/444 dead transitions. [2024-06-14 11:49:52,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 444 transitions, 6870 flow [2024-06-14 11:49:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:49:52,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 11:49:52,297 INFO L175 Difference]: Start difference. First operand has 385 places, 423 transitions, 5662 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:49:52,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 444 transitions, 6870 flow [2024-06-14 11:49:53,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 444 transitions, 6676 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 11:49:53,363 INFO L231 Difference]: Finished difference. Result has 385 places, 425 transitions, 5645 flow [2024-06-14 11:49:53,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5472, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5645, PETRI_PLACES=385, PETRI_TRANSITIONS=425} [2024-06-14 11:49:53,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 354 predicate places. [2024-06-14 11:49:53,363 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 425 transitions, 5645 flow [2024-06-14 11:49:53,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:53,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:53,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:53,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 11:49:53,364 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 11:49:53,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:53,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2114677007, now seen corresponding path program 12 times [2024-06-14 11:49:53,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:53,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487685199] [2024-06-14 11:49:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:53,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:54,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:54,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487685199] [2024-06-14 11:49:54,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487685199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:54,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:54,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:54,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631061891] [2024-06-14 11:49:54,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:54,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:54,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:54,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:54,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:54,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 425 transitions, 5645 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 11:49:54,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:54,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:54,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:55,655 INFO L124 PetriNetUnfolderBase]: 1105/1927 cut-off events. [2024-06-14 11:49:55,656 INFO L125 PetriNetUnfolderBase]: For 270153/270153 co-relation queries the response was YES. [2024-06-14 11:49:55,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16593 conditions, 1927 events. 1105/1927 cut-off events. For 270153/270153 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10993 event pairs, 166 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 16424. Up to 1754 conditions per place. [2024-06-14 11:49:55,681 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 377 selfloop transitions, 64 changer transitions 0/443 dead transitions. [2024-06-14 11:49:55,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 443 transitions, 6595 flow [2024-06-14 11:49:55,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:49:55,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 11:49:55,683 INFO L175 Difference]: Start difference. First operand has 385 places, 425 transitions, 5645 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:49:55,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 443 transitions, 6595 flow [2024-06-14 11:49:56,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 443 transitions, 6394 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 11:49:56,850 INFO L231 Difference]: Finished difference. Result has 386 places, 426 transitions, 5594 flow [2024-06-14 11:49:56,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5444, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5594, PETRI_PLACES=386, PETRI_TRANSITIONS=426} [2024-06-14 11:49:56,851 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 355 predicate places. [2024-06-14 11:49:56,851 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 426 transitions, 5594 flow [2024-06-14 11:49:56,851 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 11:49:56,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:56,851 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 11:49:56,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 11:49:56,851 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 11:49:56,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:56,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1920737597, now seen corresponding path program 13 times [2024-06-14 11:49:56,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:56,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94520060] [2024-06-14 11:49:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:56,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:57,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:57,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94520060] [2024-06-14 11:49:57,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94520060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:57,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:57,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512855664] [2024-06-14 11:49:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:57,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:57,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:57,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:57,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:58,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:49:58,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 426 transitions, 5594 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 11:49:58,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:58,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:49:58,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:58,683 INFO L124 PetriNetUnfolderBase]: 1086/1894 cut-off events. [2024-06-14 11:49:58,683 INFO L125 PetriNetUnfolderBase]: For 258335/258335 co-relation queries the response was YES. [2024-06-14 11:49:58,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14880 conditions, 1894 events. 1086/1894 cut-off events. For 258335/258335 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10809 event pairs, 158 based on Foata normal form. 14/1907 useless extension candidates. Maximal degree in co-relation 14711. Up to 1690 conditions per place. [2024-06-14 11:49:58,702 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 392 selfloop transitions, 41 changer transitions 14/449 dead transitions. [2024-06-14 11:49:58,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 449 transitions, 6620 flow [2024-06-14 11:49:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:58,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:49:58,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 11:49:58,703 INFO L175 Difference]: Start difference. First operand has 386 places, 426 transitions, 5594 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:49:58,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 449 transitions, 6620 flow [2024-06-14 11:49:59,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 449 transitions, 6476 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:59,626 INFO L231 Difference]: Finished difference. Result has 387 places, 419 transitions, 5408 flow [2024-06-14 11:49:59,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5450, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5408, PETRI_PLACES=387, PETRI_TRANSITIONS=419} [2024-06-14 11:49:59,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 356 predicate places. [2024-06-14 11:49:59,627 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 419 transitions, 5408 flow [2024-06-14 11:49:59,627 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 11:49:59,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:59,628 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 11:49:59,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 11:49:59,628 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 11:49:59,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1920731862, now seen corresponding path program 13 times [2024-06-14 11:49:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:59,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705685780] [2024-06-14 11:49:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:01,172 INFO 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 11:50:01,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:01,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705685780] [2024-06-14 11:50:01,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705685780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:01,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:01,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:01,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623610075] [2024-06-14 11:50:01,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:01,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:01,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:01,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:01,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:01,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:01,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 419 transitions, 5408 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 11:50:01,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:01,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:01,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:02,041 INFO L124 PetriNetUnfolderBase]: 1031/1799 cut-off events. [2024-06-14 11:50:02,042 INFO L125 PetriNetUnfolderBase]: For 181674/181674 co-relation queries the response was YES. [2024-06-14 11:50:02,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13983 conditions, 1799 events. 1031/1799 cut-off events. For 181674/181674 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10205 event pairs, 145 based on Foata normal form. 2/1800 useless extension candidates. Maximal degree in co-relation 13813. Up to 1620 conditions per place. [2024-06-14 11:50:02,064 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 382 selfloop transitions, 54 changer transitions 0/438 dead transitions. [2024-06-14 11:50:02,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 438 transitions, 6348 flow [2024-06-14 11:50:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:50:02,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:50:02,065 INFO L175 Difference]: Start difference. First operand has 387 places, 419 transitions, 5408 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:50:02,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 438 transitions, 6348 flow [2024-06-14 11:50:02,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 438 transitions, 6226 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:02,820 INFO L231 Difference]: Finished difference. Result has 389 places, 419 transitions, 5400 flow [2024-06-14 11:50:02,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5286, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5400, PETRI_PLACES=389, PETRI_TRANSITIONS=419} [2024-06-14 11:50:02,820 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 358 predicate places. [2024-06-14 11:50:02,820 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 419 transitions, 5400 flow [2024-06-14 11:50:02,820 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 11:50:02,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:02,821 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 11:50:02,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 11:50:02,821 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 11:50:02,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:02,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1746771114, now seen corresponding path program 14 times [2024-06-14 11:50:02,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:02,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185815806] [2024-06-14 11:50:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:02,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185815806] [2024-06-14 11:50:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185815806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:04,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:04,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601101130] [2024-06-14 11:50:04,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:04,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:04,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:04,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 419 transitions, 5400 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 11:50:04,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:04,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:04,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:05,237 INFO L124 PetriNetUnfolderBase]: 1027/1793 cut-off events. [2024-06-14 11:50:05,237 INFO L125 PetriNetUnfolderBase]: For 172896/172896 co-relation queries the response was YES. [2024-06-14 11:50:05,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13741 conditions, 1793 events. 1027/1793 cut-off events. For 172896/172896 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10188 event pairs, 184 based on Foata normal form. 2/1794 useless extension candidates. Maximal degree in co-relation 13570. Up to 1510 conditions per place. [2024-06-14 11:50:05,260 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 369 selfloop transitions, 66 changer transitions 0/437 dead transitions. [2024-06-14 11:50:05,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 437 transitions, 6550 flow [2024-06-14 11:50:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:05,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:05,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:50:05,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 11:50:05,261 INFO L175 Difference]: Start difference. First operand has 389 places, 419 transitions, 5400 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:50:05,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 437 transitions, 6550 flow [2024-06-14 11:50:06,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 437 transitions, 6398 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 11:50:06,048 INFO L231 Difference]: Finished difference. Result has 390 places, 419 transitions, 5385 flow [2024-06-14 11:50:06,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5385, PETRI_PLACES=390, PETRI_TRANSITIONS=419} [2024-06-14 11:50:06,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 359 predicate places. [2024-06-14 11:50:06,049 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 419 transitions, 5385 flow [2024-06-14 11:50:06,049 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 11:50:06,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:06,049 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 11:50:06,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 11:50:06,049 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 11:50:06,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:06,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1705953362, now seen corresponding path program 6 times [2024-06-14 11:50:06,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:06,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208398926] [2024-06-14 11:50:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:06,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:07,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208398926] [2024-06-14 11:50:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208398926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:07,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:07,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:07,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136872639] [2024-06-14 11:50:07,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:07,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:07,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:07,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:07,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 419 transitions, 5385 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 11:50:07,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:07,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:07,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:07,796 INFO L124 PetriNetUnfolderBase]: 1031/1801 cut-off events. [2024-06-14 11:50:07,796 INFO L125 PetriNetUnfolderBase]: For 176544/176544 co-relation queries the response was YES. [2024-06-14 11:50:07,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13831 conditions, 1801 events. 1031/1801 cut-off events. For 176544/176544 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10246 event pairs, 199 based on Foata normal form. 2/1802 useless extension candidates. Maximal degree in co-relation 13659. Up to 1754 conditions per place. [2024-06-14 11:50:07,819 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 415 selfloop transitions, 15 changer transitions 0/432 dead transitions. [2024-06-14 11:50:07,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 432 transitions, 6295 flow [2024-06-14 11:50:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 11:50:07,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-14 11:50:07,820 INFO L175 Difference]: Start difference. First operand has 390 places, 419 transitions, 5385 flow. Second operand 10 states and 106 transitions. [2024-06-14 11:50:07,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 432 transitions, 6295 flow [2024-06-14 11:50:08,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 432 transitions, 6187 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:08,593 INFO L231 Difference]: Finished difference. Result has 391 places, 420 transitions, 5337 flow [2024-06-14 11:50:08,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5277, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5337, PETRI_PLACES=391, PETRI_TRANSITIONS=420} [2024-06-14 11:50:08,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 360 predicate places. [2024-06-14 11:50:08,593 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 420 transitions, 5337 flow [2024-06-14 11:50:08,593 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 11:50:08,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:08,594 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 11:50:08,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 11:50:08,594 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 11:50:08,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:08,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2008692826, now seen corresponding path program 7 times [2024-06-14 11:50:08,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:08,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231922767] [2024-06-14 11:50:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:08,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:10,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:10,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231922767] [2024-06-14 11:50:10,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231922767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:10,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:10,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:10,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255469465] [2024-06-14 11:50:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:10,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:10,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:10,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:10,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 420 transitions, 5337 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 11:50:10,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:10,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:10,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:11,310 INFO L124 PetriNetUnfolderBase]: 1035/1809 cut-off events. [2024-06-14 11:50:11,310 INFO L125 PetriNetUnfolderBase]: For 179814/179814 co-relation queries the response was YES. [2024-06-14 11:50:11,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13801 conditions, 1809 events. 1035/1809 cut-off events. For 179814/179814 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10329 event pairs, 193 based on Foata normal form. 2/1810 useless extension candidates. Maximal degree in co-relation 13628. Up to 1740 conditions per place. [2024-06-14 11:50:11,331 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 409 selfloop transitions, 24 changer transitions 0/435 dead transitions. [2024-06-14 11:50:11,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 435 transitions, 6273 flow [2024-06-14 11:50:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 11:50:11,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 11:50:11,332 INFO L175 Difference]: Start difference. First operand has 391 places, 420 transitions, 5337 flow. Second operand 10 states and 112 transitions. [2024-06-14 11:50:11,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 435 transitions, 6273 flow [2024-06-14 11:50:12,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 435 transitions, 6223 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 11:50:12,124 INFO L231 Difference]: Finished difference. Result has 393 places, 421 transitions, 5367 flow [2024-06-14 11:50:12,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5287, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5367, PETRI_PLACES=393, PETRI_TRANSITIONS=421} [2024-06-14 11:50:12,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-14 11:50:12,125 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 421 transitions, 5367 flow [2024-06-14 11:50:12,125 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 11:50:12,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:12,125 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 11:50:12,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 11:50:12,126 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 11:50:12,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:12,126 INFO L85 PathProgramCache]: Analyzing trace with hash 125321317, now seen corresponding path program 14 times [2024-06-14 11:50:12,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:12,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534959906] [2024-06-14 11:50:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:12,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534959906] [2024-06-14 11:50:13,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534959906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:13,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:13,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:13,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129899939] [2024-06-14 11:50:13,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:13,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:13,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:13,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:13,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:13,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:13,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 421 transitions, 5367 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 11:50:13,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:13,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:13,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:14,357 INFO L124 PetriNetUnfolderBase]: 1039/1817 cut-off events. [2024-06-14 11:50:14,357 INFO L125 PetriNetUnfolderBase]: For 182912/182912 co-relation queries the response was YES. [2024-06-14 11:50:14,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13874 conditions, 1817 events. 1039/1817 cut-off events. For 182912/182912 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 10396 event pairs, 195 based on Foata normal form. 2/1818 useless extension candidates. Maximal degree in co-relation 13700. Up to 1667 conditions per place. [2024-06-14 11:50:14,397 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 386 selfloop transitions, 48 changer transitions 0/436 dead transitions. [2024-06-14 11:50:14,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 436 transitions, 6295 flow [2024-06-14 11:50:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:14,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 11:50:14,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 11:50:14,399 INFO L175 Difference]: Start difference. First operand has 393 places, 421 transitions, 5367 flow. Second operand 10 states and 118 transitions. [2024-06-14 11:50:14,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 436 transitions, 6295 flow [2024-06-14 11:50:15,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 436 transitions, 6215 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:50:15,255 INFO L231 Difference]: Finished difference. Result has 395 places, 422 transitions, 5407 flow [2024-06-14 11:50:15,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5287, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5407, PETRI_PLACES=395, PETRI_TRANSITIONS=422} [2024-06-14 11:50:15,255 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-14 11:50:15,255 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 422 transitions, 5407 flow [2024-06-14 11:50:15,255 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 11:50:15,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:15,256 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 11:50:15,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 11:50:15,256 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 11:50:15,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1128402484, now seen corresponding path program 8 times [2024-06-14 11:50:15,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:15,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406453129] [2024-06-14 11:50:15,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:15,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:16,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:16,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406453129] [2024-06-14 11:50:16,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406453129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:16,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:16,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:16,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701005532] [2024-06-14 11:50:16,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:16,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:16,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:16,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:16,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:16,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:16,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 422 transitions, 5407 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 11:50:16,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:16,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:16,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:17,191 INFO L124 PetriNetUnfolderBase]: 1043/1825 cut-off events. [2024-06-14 11:50:17,191 INFO L125 PetriNetUnfolderBase]: For 186352/186352 co-relation queries the response was YES. [2024-06-14 11:50:17,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13983 conditions, 1825 events. 1043/1825 cut-off events. For 186352/186352 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 10463 event pairs, 199 based on Foata normal form. 2/1826 useless extension candidates. Maximal degree in co-relation 13808. Up to 1772 conditions per place. [2024-06-14 11:50:17,218 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 412 selfloop transitions, 21 changer transitions 0/435 dead transitions. [2024-06-14 11:50:17,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 435 transitions, 6335 flow [2024-06-14 11:50:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 11:50:17,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-14 11:50:17,219 INFO L175 Difference]: Start difference. First operand has 395 places, 422 transitions, 5407 flow. Second operand 10 states and 109 transitions. [2024-06-14 11:50:17,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 435 transitions, 6335 flow [2024-06-14 11:50:18,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 435 transitions, 6225 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 11:50:18,092 INFO L231 Difference]: Finished difference. Result has 397 places, 423 transitions, 5374 flow [2024-06-14 11:50:18,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5297, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5374, PETRI_PLACES=397, PETRI_TRANSITIONS=423} [2024-06-14 11:50:18,092 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-14 11:50:18,092 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 423 transitions, 5374 flow [2024-06-14 11:50:18,092 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 11:50:18,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:18,092 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 11:50:18,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 11:50:18,093 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 11:50:18,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2008477345, now seen corresponding path program 15 times [2024-06-14 11:50:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:18,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683796244] [2024-06-14 11:50:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:18,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:19,410 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 11:50:19,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683796244] [2024-06-14 11:50:19,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683796244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:19,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:19,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:19,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714997264] [2024-06-14 11:50:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:19,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:19,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:19,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:19,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 423 transitions, 5374 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 11:50:19,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:19,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:19,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:20,248 INFO L124 PetriNetUnfolderBase]: 1063/1869 cut-off events. [2024-06-14 11:50:20,248 INFO L125 PetriNetUnfolderBase]: For 253096/253096 co-relation queries the response was YES. [2024-06-14 11:50:20,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14128 conditions, 1869 events. 1063/1869 cut-off events. For 253096/253096 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10753 event pairs, 207 based on Foata normal form. 12/1880 useless extension candidates. Maximal degree in co-relation 13952. Up to 1754 conditions per place. [2024-06-14 11:50:20,275 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 411 selfloop transitions, 23 changer transitions 7/443 dead transitions. [2024-06-14 11:50:20,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 443 transitions, 6372 flow [2024-06-14 11:50:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:50:20,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 11:50:20,276 INFO L175 Difference]: Start difference. First operand has 397 places, 423 transitions, 5374 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:50:20,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 443 transitions, 6372 flow [2024-06-14 11:50:21,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 443 transitions, 6307 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 11:50:21,148 INFO L231 Difference]: Finished difference. Result has 400 places, 422 transitions, 5350 flow [2024-06-14 11:50:21,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5309, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5350, PETRI_PLACES=400, PETRI_TRANSITIONS=422} [2024-06-14 11:50:21,149 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-14 11:50:21,149 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 422 transitions, 5350 flow [2024-06-14 11:50:21,149 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 11:50:21,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:21,149 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 11:50:21,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 11:50:21,150 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 11:50:21,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1137330484, now seen corresponding path program 9 times [2024-06-14 11:50:21,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:21,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350844180] [2024-06-14 11:50:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:21,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:22,490 INFO 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 11:50:22,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:22,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350844180] [2024-06-14 11:50:22,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350844180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:22,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:22,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:22,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198236193] [2024-06-14 11:50:22,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:22,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:22,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:22,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:22,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:22,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:22,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 422 transitions, 5350 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 11:50:22,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:22,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:22,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:23,286 INFO L124 PetriNetUnfolderBase]: 1059/1865 cut-off events. [2024-06-14 11:50:23,287 INFO L125 PetriNetUnfolderBase]: For 192698/192698 co-relation queries the response was YES. [2024-06-14 11:50:23,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14117 conditions, 1865 events. 1059/1865 cut-off events. For 192698/192698 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 10762 event pairs, 211 based on Foata normal form. 2/1866 useless extension candidates. Maximal degree in co-relation 13940. Up to 1815 conditions per place. [2024-06-14 11:50:23,314 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 415 selfloop transitions, 18 changer transitions 0/435 dead transitions. [2024-06-14 11:50:23,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 435 transitions, 6276 flow [2024-06-14 11:50:23,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 11:50:23,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 11:50:23,315 INFO L175 Difference]: Start difference. First operand has 400 places, 422 transitions, 5350 flow. Second operand 10 states and 108 transitions. [2024-06-14 11:50:23,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 435 transitions, 6276 flow [2024-06-14 11:50:24,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 435 transitions, 6216 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:24,186 INFO L231 Difference]: Finished difference. Result has 401 places, 423 transitions, 5362 flow [2024-06-14 11:50:24,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5290, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5362, PETRI_PLACES=401, PETRI_TRANSITIONS=423} [2024-06-14 11:50:24,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 370 predicate places. [2024-06-14 11:50:24,187 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 423 transitions, 5362 flow [2024-06-14 11:50:24,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:24,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:24,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:24,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 11:50:24,187 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 11:50:24,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2008684890, now seen corresponding path program 15 times [2024-06-14 11:50:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673296090] [2024-06-14 11:50:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:25,991 INFO 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 11:50:25,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:25,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673296090] [2024-06-14 11:50:25,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673296090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:25,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:25,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:25,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889763472] [2024-06-14 11:50:25,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:25,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:25,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:25,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:25,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:26,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:26,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 423 transitions, 5362 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 11:50:26,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:26,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:26,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:26,963 INFO L124 PetriNetUnfolderBase]: 1065/1875 cut-off events. [2024-06-14 11:50:26,963 INFO L125 PetriNetUnfolderBase]: For 196142/196142 co-relation queries the response was YES. [2024-06-14 11:50:26,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14182 conditions, 1875 events. 1065/1875 cut-off events. For 196142/196142 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 10850 event pairs, 209 based on Foata normal form. 2/1876 useless extension candidates. Maximal degree in co-relation 14004. Up to 1793 conditions per place. [2024-06-14 11:50:26,988 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 411 selfloop transitions, 27 changer transitions 0/440 dead transitions. [2024-06-14 11:50:26,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 440 transitions, 6330 flow [2024-06-14 11:50:26,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:50:26,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 11:50:26,989 INFO L175 Difference]: Start difference. First operand has 401 places, 423 transitions, 5362 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:50:26,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 440 transitions, 6330 flow [2024-06-14 11:50:27,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 440 transitions, 6268 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 11:50:27,954 INFO L231 Difference]: Finished difference. Result has 404 places, 425 transitions, 5405 flow [2024-06-14 11:50:27,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5300, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5405, PETRI_PLACES=404, PETRI_TRANSITIONS=425} [2024-06-14 11:50:27,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 373 predicate places. [2024-06-14 11:50:27,955 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 425 transitions, 5405 flow [2024-06-14 11:50:27,955 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 11:50:27,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:27,955 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 11:50:27,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 11:50:27,955 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 11:50:27,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash 125173447, now seen corresponding path program 16 times [2024-06-14 11:50:27,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:27,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260028073] [2024-06-14 11:50:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:29,276 INFO 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 11:50:29,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260028073] [2024-06-14 11:50:29,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260028073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:29,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:29,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:29,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935997412] [2024-06-14 11:50:29,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:29,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:29,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:29,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:29,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:29,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:29,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 425 transitions, 5405 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 11:50:29,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:29,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:29,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:30,135 INFO L124 PetriNetUnfolderBase]: 1105/1955 cut-off events. [2024-06-14 11:50:30,135 INFO L125 PetriNetUnfolderBase]: For 280708/280708 co-relation queries the response was YES. [2024-06-14 11:50:30,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15988 conditions, 1955 events. 1105/1955 cut-off events. For 280708/280708 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11343 event pairs, 217 based on Foata normal form. 2/1956 useless extension candidates. Maximal degree in co-relation 15809. Up to 1658 conditions per place. [2024-06-14 11:50:30,156 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 391 selfloop transitions, 55 changer transitions 0/448 dead transitions. [2024-06-14 11:50:30,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 448 transitions, 6673 flow [2024-06-14 11:50:30,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:50:30,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:50:30,158 INFO L175 Difference]: Start difference. First operand has 404 places, 425 transitions, 5405 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:50:30,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 448 transitions, 6673 flow [2024-06-14 11:50:31,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 448 transitions, 6594 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:31,253 INFO L231 Difference]: Finished difference. Result has 406 places, 426 transitions, 5462 flow [2024-06-14 11:50:31,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5326, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5462, PETRI_PLACES=406, PETRI_TRANSITIONS=426} [2024-06-14 11:50:31,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-14 11:50:31,253 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 426 transitions, 5462 flow [2024-06-14 11:50:31,253 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 11:50:31,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:31,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:31,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 11:50:31,254 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 11:50:31,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:31,254 INFO L85 PathProgramCache]: Analyzing trace with hash 130899178, now seen corresponding path program 10 times [2024-06-14 11:50:31,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:31,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518738911] [2024-06-14 11:50:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:31,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:33,183 INFO 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 11:50:33,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:33,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518738911] [2024-06-14 11:50:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518738911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:33,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:33,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724186140] [2024-06-14 11:50:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:33,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:33,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:33,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:33,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 426 transitions, 5462 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 11:50:33,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:33,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:33,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:34,043 INFO L124 PetriNetUnfolderBase]: 1109/1963 cut-off events. [2024-06-14 11:50:34,044 INFO L125 PetriNetUnfolderBase]: For 285390/285390 co-relation queries the response was YES. [2024-06-14 11:50:34,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16157 conditions, 1963 events. 1109/1963 cut-off events. For 285390/285390 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11423 event pairs, 223 based on Foata normal form. 2/1964 useless extension candidates. Maximal degree in co-relation 15977. Up to 1852 conditions per place. [2024-06-14 11:50:34,074 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 402 selfloop transitions, 37 changer transitions 0/441 dead transitions. [2024-06-14 11:50:34,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 441 transitions, 6416 flow [2024-06-14 11:50:34,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:34,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 11:50:34,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:50:34,075 INFO L175 Difference]: Start difference. First operand has 406 places, 426 transitions, 5462 flow. Second operand 10 states and 115 transitions. [2024-06-14 11:50:34,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 441 transitions, 6416 flow [2024-06-14 11:50:35,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 441 transitions, 6151 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-14 11:50:35,238 INFO L231 Difference]: Finished difference. Result has 406 places, 427 transitions, 5309 flow [2024-06-14 11:50:35,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5197, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5309, PETRI_PLACES=406, PETRI_TRANSITIONS=427} [2024-06-14 11:50:35,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 375 predicate places. [2024-06-14 11:50:35,238 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 427 transitions, 5309 flow [2024-06-14 11:50:35,239 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 11:50:35,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:35,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:35,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 11:50:35,239 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 11:50:35,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2008483080, now seen corresponding path program 16 times [2024-06-14 11:50:35,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:35,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401859476] [2024-06-14 11:50:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:35,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:36,563 INFO 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 11:50:36,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:36,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401859476] [2024-06-14 11:50:36,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401859476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:36,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:36,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:36,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600449741] [2024-06-14 11:50:36,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:36,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:36,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:36,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:36,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:36,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 427 transitions, 5309 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 11:50:36,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:36,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:36,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:37,414 INFO L124 PetriNetUnfolderBase]: 1105/1957 cut-off events. [2024-06-14 11:50:37,415 INFO L125 PetriNetUnfolderBase]: For 275564/275564 co-relation queries the response was YES. [2024-06-14 11:50:37,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15501 conditions, 1957 events. 1105/1957 cut-off events. For 275564/275564 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 11395 event pairs, 228 based on Foata normal form. 2/1958 useless extension candidates. Maximal degree in co-relation 15323. Up to 1850 conditions per place. [2024-06-14 11:50:37,441 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 411 selfloop transitions, 31 changer transitions 0/444 dead transitions. [2024-06-14 11:50:37,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 444 transitions, 6253 flow [2024-06-14 11:50:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:37,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 11:50:37,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 11:50:37,442 INFO L175 Difference]: Start difference. First operand has 406 places, 427 transitions, 5309 flow. Second operand 11 states and 125 transitions. [2024-06-14 11:50:37,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 444 transitions, 6253 flow [2024-06-14 11:50:38,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 444 transitions, 6096 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:38,621 INFO L231 Difference]: Finished difference. Result has 408 places, 427 transitions, 5219 flow [2024-06-14 11:50:38,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5152, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5219, PETRI_PLACES=408, PETRI_TRANSITIONS=427} [2024-06-14 11:50:38,622 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 377 predicate places. [2024-06-14 11:50:38,622 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 427 transitions, 5219 flow [2024-06-14 11:50:38,622 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 11:50:38,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:38,622 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 11:50:38,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 11:50:38,622 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 11:50:38,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:38,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2016102136, now seen corresponding path program 11 times [2024-06-14 11:50:38,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:38,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449427158] [2024-06-14 11:50:38,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:38,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:39,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449427158] [2024-06-14 11:50:39,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449427158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:39,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:39,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:39,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389808202] [2024-06-14 11:50:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:39,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:39,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:40,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:40,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 427 transitions, 5219 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 11:50:40,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:40,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:40,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:40,733 INFO L124 PetriNetUnfolderBase]: 1109/1965 cut-off events. [2024-06-14 11:50:40,733 INFO L125 PetriNetUnfolderBase]: For 280544/280544 co-relation queries the response was YES. [2024-06-14 11:50:40,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15436 conditions, 1965 events. 1109/1965 cut-off events. For 280544/280544 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11457 event pairs, 230 based on Foata normal form. 2/1966 useless extension candidates. Maximal degree in co-relation 15258. Up to 1911 conditions per place. [2024-06-14 11:50:40,758 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 420 selfloop transitions, 20 changer transitions 0/442 dead transitions. [2024-06-14 11:50:40,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 442 transitions, 6193 flow [2024-06-14 11:50:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:50:40,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:50:40,760 INFO L175 Difference]: Start difference. First operand has 408 places, 427 transitions, 5219 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:50:40,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 442 transitions, 6193 flow [2024-06-14 11:50:41,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 442 transitions, 6108 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 11:50:41,936 INFO L231 Difference]: Finished difference. Result has 409 places, 429 transitions, 5243 flow [2024-06-14 11:50:41,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5243, PETRI_PLACES=409, PETRI_TRANSITIONS=429} [2024-06-14 11:50:41,937 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-14 11:50:41,937 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 429 transitions, 5243 flow [2024-06-14 11:50:41,937 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 11:50:41,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:41,937 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 11:50:41,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 11:50:41,938 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 11:50:41,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:41,938 INFO L85 PathProgramCache]: Analyzing trace with hash 130689432, now seen corresponding path program 17 times [2024-06-14 11:50:41,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:41,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175767767] [2024-06-14 11:50:41,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:41,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:43,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:43,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175767767] [2024-06-14 11:50:43,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175767767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:43,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:43,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47296647] [2024-06-14 11:50:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:43,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:43,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:43,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 429 transitions, 5243 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 11:50:43,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:43,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:43,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:44,045 INFO L124 PetriNetUnfolderBase]: 1115/1975 cut-off events. [2024-06-14 11:50:44,045 INFO L125 PetriNetUnfolderBase]: For 284777/284777 co-relation queries the response was YES. [2024-06-14 11:50:44,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15518 conditions, 1975 events. 1115/1975 cut-off events. For 284777/284777 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 11529 event pairs, 226 based on Foata normal form. 2/1976 useless extension candidates. Maximal degree in co-relation 15338. Up to 1794 conditions per place. [2024-06-14 11:50:44,072 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 393 selfloop transitions, 53 changer transitions 0/448 dead transitions. [2024-06-14 11:50:44,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 448 transitions, 6243 flow [2024-06-14 11:50:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 11:50:44,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 11:50:44,073 INFO L175 Difference]: Start difference. First operand has 409 places, 429 transitions, 5243 flow. Second operand 11 states and 130 transitions. [2024-06-14 11:50:44,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 448 transitions, 6243 flow [2024-06-14 11:50:45,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 448 transitions, 6180 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 11:50:45,164 INFO L231 Difference]: Finished difference. Result has 414 places, 431 transitions, 5341 flow [2024-06-14 11:50:45,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5180, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5341, PETRI_PLACES=414, PETRI_TRANSITIONS=431} [2024-06-14 11:50:45,164 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 383 predicate places. [2024-06-14 11:50:45,164 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 431 transitions, 5341 flow [2024-06-14 11:50:45,164 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 11:50:45,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:45,164 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 11:50:45,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 11:50:45,165 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 11:50:45,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:45,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2016111436, now seen corresponding path program 12 times [2024-06-14 11:50:45,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:45,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953292650] [2024-06-14 11:50:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:45,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:46,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:46,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953292650] [2024-06-14 11:50:46,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953292650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:46,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:46,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:46,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387618567] [2024-06-14 11:50:46,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:46,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:46,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:46,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:46,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 431 transitions, 5341 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 11:50:46,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:46,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:46,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:47,422 INFO L124 PetriNetUnfolderBase]: 1119/1983 cut-off events. [2024-06-14 11:50:47,423 INFO L125 PetriNetUnfolderBase]: For 289798/289798 co-relation queries the response was YES. [2024-06-14 11:50:47,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15686 conditions, 1983 events. 1119/1983 cut-off events. For 289798/289798 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 11600 event pairs, 236 based on Foata normal form. 2/1984 useless extension candidates. Maximal degree in co-relation 15505. Up to 1932 conditions per place. [2024-06-14 11:50:47,466 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 425 selfloop transitions, 18 changer transitions 0/445 dead transitions. [2024-06-14 11:50:47,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 445 transitions, 6299 flow [2024-06-14 11:50:47,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 11:50:47,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:50:47,471 INFO L175 Difference]: Start difference. First operand has 414 places, 431 transitions, 5341 flow. Second operand 10 states and 110 transitions. [2024-06-14 11:50:47,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 445 transitions, 6299 flow [2024-06-14 11:50:48,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 445 transitions, 6160 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:48,729 INFO L231 Difference]: Finished difference. Result has 415 places, 432 transitions, 5280 flow [2024-06-14 11:50:48,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5280, PETRI_PLACES=415, PETRI_TRANSITIONS=432} [2024-06-14 11:50:48,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 384 predicate places. [2024-06-14 11:50:48,729 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 432 transitions, 5280 flow [2024-06-14 11:50:48,730 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 11:50:48,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:48,730 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 11:50:48,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 11:50:48,730 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 11:50:48,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1629587368, now seen corresponding path program 13 times [2024-06-14 11:50:48,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455639543] [2024-06-14 11:50:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:50,173 INFO 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 11:50:50,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:50,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455639543] [2024-06-14 11:50:50,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455639543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:50,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:50,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:50,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577057440] [2024-06-14 11:50:50,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:50,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:50,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:50,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:50,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:50,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:50,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 432 transitions, 5280 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 11:50:50,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:50,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:50,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:50,886 INFO L124 PetriNetUnfolderBase]: 1123/1991 cut-off events. [2024-06-14 11:50:50,886 INFO L125 PetriNetUnfolderBase]: For 295060/295060 co-relation queries the response was YES. [2024-06-14 11:50:50,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15681 conditions, 1991 events. 1123/1991 cut-off events. For 295060/295060 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 11678 event pairs, 232 based on Foata normal form. 2/1992 useless extension candidates. Maximal degree in co-relation 15499. Up to 1925 conditions per place. [2024-06-14 11:50:50,915 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 421 selfloop transitions, 24 changer transitions 0/447 dead transitions. [2024-06-14 11:50:50,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 447 transitions, 6265 flow [2024-06-14 11:50:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 11:50:50,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-14 11:50:50,917 INFO L175 Difference]: Start difference. First operand has 415 places, 432 transitions, 5280 flow. Second operand 10 states and 113 transitions. [2024-06-14 11:50:50,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 447 transitions, 6265 flow [2024-06-14 11:50:51,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 447 transitions, 6157 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:51,946 INFO L231 Difference]: Finished difference. Result has 417 places, 434 transitions, 5290 flow [2024-06-14 11:50:51,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5173, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5290, PETRI_PLACES=417, PETRI_TRANSITIONS=434} [2024-06-14 11:50:51,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-14 11:50:51,947 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 434 transitions, 5290 flow [2024-06-14 11:50:51,947 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 11:50:51,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:51,947 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 11:50:51,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 11:50:51,947 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 11:50:51,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -194912372, now seen corresponding path program 18 times [2024-06-14 11:50:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:51,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891658201] [2024-06-14 11:50:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:53,306 INFO 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 11:50:53,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891658201] [2024-06-14 11:50:53,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891658201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:53,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:53,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:53,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425281624] [2024-06-14 11:50:53,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:53,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:53,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:53,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:53,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:53,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:53,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 434 transitions, 5290 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 11:50:53,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:53,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:53,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:54,320 INFO L124 PetriNetUnfolderBase]: 1129/2001 cut-off events. [2024-06-14 11:50:54,320 INFO L125 PetriNetUnfolderBase]: For 298823/298823 co-relation queries the response was YES. [2024-06-14 11:50:54,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15749 conditions, 2001 events. 1129/2001 cut-off events. For 298823/298823 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 11689 event pairs, 223 based on Foata normal form. 2/2002 useless extension candidates. Maximal degree in co-relation 15565. Up to 1663 conditions per place. [2024-06-14 11:50:54,349 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 371 selfloop transitions, 82 changer transitions 0/455 dead transitions. [2024-06-14 11:50:54,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 455 transitions, 6806 flow [2024-06-14 11:50:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:50:54,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:50:54,350 INFO L175 Difference]: Start difference. First operand has 417 places, 434 transitions, 5290 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:50:54,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 455 transitions, 6806 flow [2024-06-14 11:50:55,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 455 transitions, 6729 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 11:50:55,448 INFO L231 Difference]: Finished difference. Result has 421 places, 436 transitions, 5430 flow [2024-06-14 11:50:55,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5213, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5430, PETRI_PLACES=421, PETRI_TRANSITIONS=436} [2024-06-14 11:50:55,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 390 predicate places. [2024-06-14 11:50:55,449 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 436 transitions, 5430 flow [2024-06-14 11:50:55,449 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 11:50:55,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:55,449 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 11:50:55,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 11:50:55,449 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 11:50:55,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash -757636, now seen corresponding path program 14 times [2024-06-14 11:50:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685341077] [2024-06-14 11:50:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:57,144 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 11:50:57,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:57,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685341077] [2024-06-14 11:50:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685341077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:57,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:57,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:57,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833436107] [2024-06-14 11:50:57,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:57,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:57,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:57,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:57,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:57,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:50:57,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 436 transitions, 5430 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 11:50:57,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:57,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:50:57,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:57,995 INFO L124 PetriNetUnfolderBase]: 1133/2009 cut-off events. [2024-06-14 11:50:57,995 INFO L125 PetriNetUnfolderBase]: For 304078/304078 co-relation queries the response was YES. [2024-06-14 11:50:58,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15972 conditions, 2009 events. 1133/2009 cut-off events. For 304078/304078 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 11759 event pairs, 236 based on Foata normal form. 2/2010 useless extension candidates. Maximal degree in co-relation 15787. Up to 1936 conditions per place. [2024-06-14 11:50:58,024 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 422 selfloop transitions, 27 changer transitions 0/451 dead transitions. [2024-06-14 11:50:58,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 451 transitions, 6412 flow [2024-06-14 11:50:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:50:58,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 11:50:58,025 INFO L175 Difference]: Start difference. First operand has 421 places, 436 transitions, 5430 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:50:58,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 451 transitions, 6412 flow [2024-06-14 11:50:59,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 451 transitions, 6126 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-14 11:50:59,215 INFO L231 Difference]: Finished difference. Result has 420 places, 437 transitions, 5244 flow [2024-06-14 11:50:59,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5144, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5244, PETRI_PLACES=420, PETRI_TRANSITIONS=437} [2024-06-14 11:50:59,216 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 389 predicate places. [2024-06-14 11:50:59,216 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 437 transitions, 5244 flow [2024-06-14 11:50:59,216 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 11:50:59,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:59,216 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 11:50:59,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 11:50:59,216 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 11:50:59,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:59,217 INFO L85 PathProgramCache]: Analyzing trace with hash 324830652, now seen corresponding path program 19 times [2024-06-14 11:50:59,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:59,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492858618] [2024-06-14 11:50:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:59,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:01,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492858618] [2024-06-14 11:51:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492858618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:01,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:01,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046719675] [2024-06-14 11:51:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:01,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:01,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:01,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 437 transitions, 5244 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 11:51:01,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:01,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:01,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:01,992 INFO L124 PetriNetUnfolderBase]: 1139/2019 cut-off events. [2024-06-14 11:51:01,992 INFO L125 PetriNetUnfolderBase]: For 308499/308499 co-relation queries the response was YES. [2024-06-14 11:51:02,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15739 conditions, 2019 events. 1139/2019 cut-off events. For 308499/308499 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 11856 event pairs, 234 based on Foata normal form. 2/2020 useless extension candidates. Maximal degree in co-relation 15555. Up to 1925 conditions per place. [2024-06-14 11:51:02,021 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 421 selfloop transitions, 32 changer transitions 0/455 dead transitions. [2024-06-14 11:51:02,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 455 transitions, 6242 flow [2024-06-14 11:51:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 11:51:02,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:51:02,022 INFO L175 Difference]: Start difference. First operand has 420 places, 437 transitions, 5244 flow. Second operand 11 states and 128 transitions. [2024-06-14 11:51:02,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 455 transitions, 6242 flow [2024-06-14 11:51:03,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 455 transitions, 6152 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 11:51:03,240 INFO L231 Difference]: Finished difference. Result has 423 places, 439 transitions, 5263 flow [2024-06-14 11:51:03,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5154, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5263, PETRI_PLACES=423, PETRI_TRANSITIONS=439} [2024-06-14 11:51:03,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 392 predicate places. [2024-06-14 11:51:03,241 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 439 transitions, 5263 flow [2024-06-14 11:51:03,241 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 11:51:03,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:03,241 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 11:51:03,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 11:51:03,241 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 11:51:03,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 130683697, now seen corresponding path program 17 times [2024-06-14 11:51:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:03,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761302695] [2024-06-14 11:51:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:03,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:04,649 INFO 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 11:51:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:04,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761302695] [2024-06-14 11:51:04,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761302695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:04,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:04,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:04,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845165831] [2024-06-14 11:51:04,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:04,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:04,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:04,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:04,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 439 transitions, 5263 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 11:51:04,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:04,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:04,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:05,488 INFO L124 PetriNetUnfolderBase]: 1143/2027 cut-off events. [2024-06-14 11:51:05,488 INFO L125 PetriNetUnfolderBase]: For 312668/312668 co-relation queries the response was YES. [2024-06-14 11:51:05,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15773 conditions, 2027 events. 1143/2027 cut-off events. For 312668/312668 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11953 event pairs, 240 based on Foata normal form. 2/2028 useless extension candidates. Maximal degree in co-relation 15588. Up to 1911 conditions per place. [2024-06-14 11:51:05,518 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 409 selfloop transitions, 42 changer transitions 0/453 dead transitions. [2024-06-14 11:51:05,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 453 transitions, 6216 flow [2024-06-14 11:51:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:51:05,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 11:51:05,520 INFO L175 Difference]: Start difference. First operand has 423 places, 439 transitions, 5263 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:51:05,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 453 transitions, 6216 flow [2024-06-14 11:51:06,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 453 transitions, 6127 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:06,811 INFO L231 Difference]: Finished difference. Result has 425 places, 440 transitions, 5281 flow [2024-06-14 11:51:06,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5174, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5281, PETRI_PLACES=425, PETRI_TRANSITIONS=440} [2024-06-14 11:51:06,811 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 394 predicate places. [2024-06-14 11:51:06,812 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 440 transitions, 5281 flow [2024-06-14 11:51:06,812 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 11:51:06,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:06,812 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 11:51:06,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 11:51:06,812 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 11:51:06,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:06,812 INFO L85 PathProgramCache]: Analyzing trace with hash 324623107, now seen corresponding path program 18 times [2024-06-14 11:51:06,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:06,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730926275] [2024-06-14 11:51:06,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:06,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:08,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:08,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730926275] [2024-06-14 11:51:08,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730926275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:08,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:08,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023197953] [2024-06-14 11:51:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:08,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:08,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:08,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:08,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 440 transitions, 5281 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 11:51:08,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:08,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:08,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:08,982 INFO L124 PetriNetUnfolderBase]: 1142/2032 cut-off events. [2024-06-14 11:51:08,982 INFO L125 PetriNetUnfolderBase]: For 348119/348119 co-relation queries the response was YES. [2024-06-14 11:51:09,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15032 conditions, 2032 events. 1142/2032 cut-off events. For 348119/348119 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11959 event pairs, 237 based on Foata normal form. 12/2043 useless extension candidates. Maximal degree in co-relation 14846. Up to 1905 conditions per place. [2024-06-14 11:51:09,013 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 423 selfloop transitions, 28 changer transitions 7/460 dead transitions. [2024-06-14 11:51:09,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 460 transitions, 6299 flow [2024-06-14 11:51:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:09,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:51:09,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 11:51:09,015 INFO L175 Difference]: Start difference. First operand has 425 places, 440 transitions, 5281 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:51:09,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 460 transitions, 6299 flow [2024-06-14 11:51:10,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 460 transitions, 6203 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:10,141 INFO L231 Difference]: Finished difference. Result has 427 places, 438 transitions, 5218 flow [2024-06-14 11:51:10,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5185, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5218, PETRI_PLACES=427, PETRI_TRANSITIONS=438} [2024-06-14 11:51:10,141 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 396 predicate places. [2024-06-14 11:51:10,141 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 438 transitions, 5218 flow [2024-06-14 11:51:10,142 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 11:51:10,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:10,142 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 11:51:10,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 11:51:10,142 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 11:51:10,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:10,142 INFO L85 PathProgramCache]: Analyzing trace with hash 130891242, now seen corresponding path program 20 times [2024-06-14 11:51:10,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:10,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072125232] [2024-06-14 11:51:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:10,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:11,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:11,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072125232] [2024-06-14 11:51:11,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072125232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:11,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:11,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:11,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609422049] [2024-06-14 11:51:11,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:11,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:11,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:11,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:11,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:11,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 438 transitions, 5218 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 11:51:11,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:11,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:11,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:12,387 INFO L124 PetriNetUnfolderBase]: 1130/2014 cut-off events. [2024-06-14 11:51:12,387 INFO L125 PetriNetUnfolderBase]: For 254659/254659 co-relation queries the response was YES. [2024-06-14 11:51:12,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 2014 events. 1130/2014 cut-off events. For 254659/254659 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11887 event pairs, 230 based on Foata normal form. 2/2015 useless extension candidates. Maximal degree in co-relation 14449. Up to 1725 conditions per place. [2024-06-14 11:51:12,417 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 382 selfloop transitions, 72 changer transitions 0/456 dead transitions. [2024-06-14 11:51:12,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 456 transitions, 6448 flow [2024-06-14 11:51:12,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:51:12,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:51:12,418 INFO L175 Difference]: Start difference. First operand has 427 places, 438 transitions, 5218 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:51:12,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 456 transitions, 6448 flow [2024-06-14 11:51:13,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 456 transitions, 6344 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 11:51:13,432 INFO L231 Difference]: Finished difference. Result has 428 places, 438 transitions, 5263 flow [2024-06-14 11:51:13,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5114, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5263, PETRI_PLACES=428, PETRI_TRANSITIONS=438} [2024-06-14 11:51:13,433 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-14 11:51:13,433 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 438 transitions, 5263 flow [2024-06-14 11:51:13,433 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 11:51:13,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:13,433 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 11:51:13,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 11:51:13,433 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 11:51:13,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash 332257198, now seen corresponding path program 15 times [2024-06-14 11:51:13,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:13,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775084092] [2024-06-14 11:51:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:13,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:14,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:14,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775084092] [2024-06-14 11:51:14,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775084092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:14,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:14,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:14,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129627567] [2024-06-14 11:51:14,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:14,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:14,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:14,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:14,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:14,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 438 transitions, 5263 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 11:51:14,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:14,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:14,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:15,522 INFO L124 PetriNetUnfolderBase]: 1105/1963 cut-off events. [2024-06-14 11:51:15,522 INFO L125 PetriNetUnfolderBase]: For 176219/176219 co-relation queries the response was YES. [2024-06-14 11:51:15,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13168 conditions, 1963 events. 1105/1963 cut-off events. For 176219/176219 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11554 event pairs, 223 based on Foata normal form. 2/1964 useless extension candidates. Maximal degree in co-relation 12980. Up to 1909 conditions per place. [2024-06-14 11:51:15,552 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 430 selfloop transitions, 19 changer transitions 0/451 dead transitions. [2024-06-14 11:51:15,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 451 transitions, 6197 flow [2024-06-14 11:51:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:51:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:51:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 11:51:15,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-14 11:51:15,553 INFO L175 Difference]: Start difference. First operand has 428 places, 438 transitions, 5263 flow. Second operand 10 states and 111 transitions. [2024-06-14 11:51:15,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 451 transitions, 6197 flow [2024-06-14 11:51:16,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 451 transitions, 6037 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 11:51:16,411 INFO L231 Difference]: Finished difference. Result has 428 places, 438 transitions, 5145 flow [2024-06-14 11:51:16,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5103, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5145, PETRI_PLACES=428, PETRI_TRANSITIONS=438} [2024-06-14 11:51:16,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 397 predicate places. [2024-06-14 11:51:16,412 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 438 transitions, 5145 flow [2024-06-14 11:51:16,412 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 11:51:16,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:16,412 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 11:51:16,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 11:51:16,413 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 11:51:16,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash 324628842, now seen corresponding path program 21 times [2024-06-14 11:51:16,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:16,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142775862] [2024-06-14 11:51:16,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:16,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:17,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:17,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142775862] [2024-06-14 11:51:17,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142775862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:17,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:17,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:17,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785991960] [2024-06-14 11:51:17,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:17,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:17,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:17,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:17,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:17,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:17,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 438 transitions, 5145 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 11:51:17,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:17,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:17,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:18,619 INFO L124 PetriNetUnfolderBase]: 1101/1957 cut-off events. [2024-06-14 11:51:18,619 INFO L125 PetriNetUnfolderBase]: For 161319/161319 co-relation queries the response was YES. [2024-06-14 11:51:18,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12722 conditions, 1957 events. 1101/1957 cut-off events. For 161319/161319 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11558 event pairs, 216 based on Foata normal form. 2/1958 useless extension candidates. Maximal degree in co-relation 12533. Up to 1863 conditions per place. [2024-06-14 11:51:18,645 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 422 selfloop transitions, 32 changer transitions 0/456 dead transitions. [2024-06-14 11:51:18,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 456 transitions, 6119 flow [2024-06-14 11:51:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:51:18,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 11:51:18,646 INFO L175 Difference]: Start difference. First operand has 428 places, 438 transitions, 5145 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:51:18,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 456 transitions, 6119 flow [2024-06-14 11:51:19,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 456 transitions, 5912 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-14 11:51:19,322 INFO L231 Difference]: Finished difference. Result has 429 places, 438 transitions, 5007 flow [2024-06-14 11:51:19,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5007, PETRI_PLACES=429, PETRI_TRANSITIONS=438} [2024-06-14 11:51:19,322 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-14 11:51:19,322 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 438 transitions, 5007 flow [2024-06-14 11:51:19,322 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 11:51:19,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:19,323 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 11:51:19,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 11:51:19,323 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 11:51:19,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:19,323 INFO L85 PathProgramCache]: Analyzing trace with hash -870470238, now seen corresponding path program 22 times [2024-06-14 11:51:19,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:19,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732682263] [2024-06-14 11:51:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:19,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:20,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:20,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732682263] [2024-06-14 11:51:20,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732682263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:20,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:20,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:51:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344335503] [2024-06-14 11:51:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:20,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:51:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:51:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:51:20,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:20,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 438 transitions, 5007 flow. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:20,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:20,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:20,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:21,154 INFO L124 PetriNetUnfolderBase]: 1097/1951 cut-off events. [2024-06-14 11:51:21,154 INFO L125 PetriNetUnfolderBase]: For 145196/145196 co-relation queries the response was YES. [2024-06-14 11:51:21,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 1951 events. 1097/1951 cut-off events. For 145196/145196 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 11492 event pairs, 139 based on Foata normal form. 2/1952 useless extension candidates. Maximal degree in co-relation 12014. Up to 1694 conditions per place. [2024-06-14 11:51:21,181 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 383 selfloop transitions, 73 changer transitions 0/458 dead transitions. [2024-06-14 11:51:21,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 458 transitions, 5996 flow [2024-06-14 11:51:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:21,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:51:21,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:51:21,182 INFO L175 Difference]: Start difference. First operand has 429 places, 438 transitions, 5007 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:51:21,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 458 transitions, 5996 flow [2024-06-14 11:51:21,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 458 transitions, 5770 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-14 11:51:21,930 INFO L231 Difference]: Finished difference. Result has 429 places, 440 transitions, 4975 flow [2024-06-14 11:51:21,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4782, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4975, PETRI_PLACES=429, PETRI_TRANSITIONS=440} [2024-06-14 11:51:21,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-14 11:51:21,931 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 440 transitions, 4975 flow [2024-06-14 11:51:21,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:21,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:21,931 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 11:51:21,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 11:51:21,931 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 11:51:21,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:21,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2075713984, now seen corresponding path program 23 times [2024-06-14 11:51:21,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:21,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665661009] [2024-06-14 11:51:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:21,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:23,474 INFO 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 11:51:23,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:23,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665661009] [2024-06-14 11:51:23,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665661009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:23,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:23,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476082345] [2024-06-14 11:51:23,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:23,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:23,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:23,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:23,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:23,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 440 transitions, 4975 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 11:51:23,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:23,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:23,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:24,522 INFO L124 PetriNetUnfolderBase]: 1184/2096 cut-off events. [2024-06-14 11:51:24,522 INFO L125 PetriNetUnfolderBase]: For 147170/147170 co-relation queries the response was YES. [2024-06-14 11:51:24,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12804 conditions, 2096 events. 1184/2096 cut-off events. For 147170/147170 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 12480 event pairs, 135 based on Foata normal form. 2/2097 useless extension candidates. Maximal degree in co-relation 12615. Up to 984 conditions per place. [2024-06-14 11:51:24,551 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 227 changer transitions 0/501 dead transitions. [2024-06-14 11:51:24,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 501 transitions, 6698 flow [2024-06-14 11:51:24,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:24,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-14 11:51:24,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-14 11:51:24,552 INFO L175 Difference]: Start difference. First operand has 429 places, 440 transitions, 4975 flow. Second operand 11 states and 151 transitions. [2024-06-14 11:51:24,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 501 transitions, 6698 flow [2024-06-14 11:51:25,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 501 transitions, 6372 flow, removed 44 selfloop flow, removed 14 redundant places. [2024-06-14 11:51:25,343 INFO L231 Difference]: Finished difference. Result has 429 places, 468 transitions, 5461 flow [2024-06-14 11:51:25,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5461, PETRI_PLACES=429, PETRI_TRANSITIONS=468} [2024-06-14 11:51:25,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 398 predicate places. [2024-06-14 11:51:25,343 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 468 transitions, 5461 flow [2024-06-14 11:51:25,344 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 11:51:25,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:25,344 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 11:51:25,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 11:51:25,344 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 11:51:25,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash 581003912, now seen corresponding path program 24 times [2024-06-14 11:51:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:25,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537732516] [2024-06-14 11:51:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:25,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:27,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:27,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537732516] [2024-06-14 11:51:27,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537732516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:27,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:27,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:27,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934682667] [2024-06-14 11:51:27,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:27,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:27,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:27,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:27,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 468 transitions, 5461 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 11:51:27,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:27,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:27,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:28,045 INFO L124 PetriNetUnfolderBase]: 1186/2100 cut-off events. [2024-06-14 11:51:28,045 INFO L125 PetriNetUnfolderBase]: For 130210/130210 co-relation queries the response was YES. [2024-06-14 11:51:28,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12810 conditions, 2100 events. 1186/2100 cut-off events. For 130210/130210 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 12577 event pairs, 181 based on Foata normal form. 2/2101 useless extension candidates. Maximal degree in co-relation 12625. Up to 1871 conditions per place. [2024-06-14 11:51:28,085 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 424 selfloop transitions, 77 changer transitions 0/503 dead transitions. [2024-06-14 11:51:28,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 503 transitions, 6661 flow [2024-06-14 11:51:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:51:28,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:51:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-14 11:51:28,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-14 11:51:28,086 INFO L175 Difference]: Start difference. First operand has 429 places, 468 transitions, 5461 flow. Second operand 13 states and 157 transitions. [2024-06-14 11:51:28,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 503 transitions, 6661 flow [2024-06-14 11:51:28,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 503 transitions, 6356 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-14 11:51:28,670 INFO L231 Difference]: Finished difference. Result has 441 places, 478 transitions, 5490 flow [2024-06-14 11:51:28,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5158, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5490, PETRI_PLACES=441, PETRI_TRANSITIONS=478} [2024-06-14 11:51:28,670 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 410 predicate places. [2024-06-14 11:51:28,670 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 478 transitions, 5490 flow [2024-06-14 11:51:28,671 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 11:51:28,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:28,671 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 11:51:28,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 11:51:28,671 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 11:51:28,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:28,671 INFO L85 PathProgramCache]: Analyzing trace with hash 857051683, now seen corresponding path program 1 times [2024-06-14 11:51:28,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:28,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837847147] [2024-06-14 11:51:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:28,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:30,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:30,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837847147] [2024-06-14 11:51:30,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837847147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:30,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:30,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:30,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513845505] [2024-06-14 11:51:30,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:30,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:30,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:30,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:30,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 478 transitions, 5490 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:30,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:30,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:30,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:31,464 INFO L124 PetriNetUnfolderBase]: 1227/2187 cut-off events. [2024-06-14 11:51:31,465 INFO L125 PetriNetUnfolderBase]: For 272408/272408 co-relation queries the response was YES. [2024-06-14 11:51:31,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14265 conditions, 2187 events. 1227/2187 cut-off events. For 272408/272408 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 13132 event pairs, 189 based on Foata normal form. 8/2194 useless extension candidates. Maximal degree in co-relation 14075. Up to 1665 conditions per place. [2024-06-14 11:51:31,505 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 415 selfloop transitions, 74 changer transitions 21/512 dead transitions. [2024-06-14 11:51:31,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 512 transitions, 6930 flow [2024-06-14 11:51:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:51:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:51:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-14 11:51:31,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-14 11:51:31,506 INFO L175 Difference]: Start difference. First operand has 441 places, 478 transitions, 5490 flow. Second operand 13 states and 160 transitions. [2024-06-14 11:51:31,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 512 transitions, 6930 flow [2024-06-14 11:51:32,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 512 transitions, 6694 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 11:51:32,701 INFO L231 Difference]: Finished difference. Result has 446 places, 468 transitions, 5311 flow [2024-06-14 11:51:32,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5254, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5311, PETRI_PLACES=446, PETRI_TRANSITIONS=468} [2024-06-14 11:51:32,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 415 predicate places. [2024-06-14 11:51:32,702 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 468 transitions, 5311 flow [2024-06-14 11:51:32,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:32,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:32,702 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 11:51:32,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 11:51:32,702 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 11:51:32,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:32,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1045524877, now seen corresponding path program 2 times [2024-06-14 11:51:32,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:32,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158966380] [2024-06-14 11:51:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:34,085 INFO 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 11:51:34,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:34,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158966380] [2024-06-14 11:51:34,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158966380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:34,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:34,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:34,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817823375] [2024-06-14 11:51:34,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:34,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:34,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:34,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:34,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:34,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:34,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 468 transitions, 5311 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:34,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:34,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:34,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:35,153 INFO L124 PetriNetUnfolderBase]: 1248/2236 cut-off events. [2024-06-14 11:51:35,153 INFO L125 PetriNetUnfolderBase]: For 366353/366353 co-relation queries the response was YES. [2024-06-14 11:51:35,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15587 conditions, 2236 events. 1248/2236 cut-off events. For 366353/366353 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 13507 event pairs, 198 based on Foata normal form. 8/2243 useless extension candidates. Maximal degree in co-relation 15398. Up to 1836 conditions per place. [2024-06-14 11:51:35,178 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 412 selfloop transitions, 87 changer transitions 10/511 dead transitions. [2024-06-14 11:51:35,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 511 transitions, 6853 flow [2024-06-14 11:51:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:51:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:51:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-14 11:51:35,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-14 11:51:35,179 INFO L175 Difference]: Start difference. First operand has 446 places, 468 transitions, 5311 flow. Second operand 13 states and 157 transitions. [2024-06-14 11:51:35,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 511 transitions, 6853 flow [2024-06-14 11:51:36,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 511 transitions, 6488 flow, removed 20 selfloop flow, removed 17 redundant places. [2024-06-14 11:51:36,554 INFO L231 Difference]: Finished difference. Result has 437 places, 475 transitions, 5199 flow [2024-06-14 11:51:36,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4966, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5199, PETRI_PLACES=437, PETRI_TRANSITIONS=475} [2024-06-14 11:51:36,554 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 406 predicate places. [2024-06-14 11:51:36,554 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 475 transitions, 5199 flow [2024-06-14 11:51:36,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:36,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:36,554 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 11:51:36,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 11:51:36,555 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 11:51:36,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:36,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2012701359, now seen corresponding path program 3 times [2024-06-14 11:51:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:36,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262067895] [2024-06-14 11:51:36,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:36,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:37,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:37,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:37,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262067895] [2024-06-14 11:51:37,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262067895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:37,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:37,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:37,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470802677] [2024-06-14 11:51:37,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:37,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:37,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:37,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:37,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:38,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:38,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 475 transitions, 5199 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:38,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:38,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:38,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:39,065 INFO L124 PetriNetUnfolderBase]: 1236/2220 cut-off events. [2024-06-14 11:51:39,065 INFO L125 PetriNetUnfolderBase]: For 350473/350473 co-relation queries the response was YES. [2024-06-14 11:51:39,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14948 conditions, 2220 events. 1236/2220 cut-off events. For 350473/350473 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 13455 event pairs, 196 based on Foata normal form. 8/2227 useless extension candidates. Maximal degree in co-relation 14767. Up to 1812 conditions per place. [2024-06-14 11:51:39,092 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 413 selfloop transitions, 79 changer transitions 13/507 dead transitions. [2024-06-14 11:51:39,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 507 transitions, 6623 flow [2024-06-14 11:51:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:51:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:51:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-14 11:51:39,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-14 11:51:39,093 INFO L175 Difference]: Start difference. First operand has 437 places, 475 transitions, 5199 flow. Second operand 13 states and 158 transitions. [2024-06-14 11:51:39,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 507 transitions, 6623 flow [2024-06-14 11:51:40,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 507 transitions, 6471 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:40,527 INFO L231 Difference]: Finished difference. Result has 440 places, 469 transitions, 5142 flow [2024-06-14 11:51:40,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=5049, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5142, PETRI_PLACES=440, PETRI_TRANSITIONS=469} [2024-06-14 11:51:40,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 409 predicate places. [2024-06-14 11:51:40,527 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 469 transitions, 5142 flow [2024-06-14 11:51:40,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:40,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:40,528 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 11:51:40,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 11:51:40,528 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 11:51:40,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:40,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1045529527, now seen corresponding path program 4 times [2024-06-14 11:51:40,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:40,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597472773] [2024-06-14 11:51:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:40,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:41,973 INFO 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 11:51:41,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:41,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597472773] [2024-06-14 11:51:41,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597472773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:41,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:41,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:41,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533087569] [2024-06-14 11:51:41,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:41,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:41,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:41,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:42,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:42,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 469 transitions, 5142 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:42,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:42,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:42,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:43,034 INFO L124 PetriNetUnfolderBase]: 1215/2189 cut-off events. [2024-06-14 11:51:43,034 INFO L125 PetriNetUnfolderBase]: For 386070/386070 co-relation queries the response was YES. [2024-06-14 11:51:43,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13550 conditions, 2189 events. 1215/2189 cut-off events. For 386070/386070 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 13304 event pairs, 187 based on Foata normal form. 22/2210 useless extension candidates. Maximal degree in co-relation 13369. Up to 1784 conditions per place. [2024-06-14 11:51:43,063 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 382 selfloop transitions, 66 changer transitions 48/498 dead transitions. [2024-06-14 11:51:43,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 498 transitions, 6268 flow [2024-06-14 11:51:43,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-14 11:51:43,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-14 11:51:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 166 transitions. [2024-06-14 11:51:43,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458333333333333 [2024-06-14 11:51:43,064 INFO L175 Difference]: Start difference. First operand has 440 places, 469 transitions, 5142 flow. Second operand 15 states and 166 transitions. [2024-06-14 11:51:43,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 498 transitions, 6268 flow [2024-06-14 11:51:43,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 498 transitions, 6104 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:51:43,949 INFO L231 Difference]: Finished difference. Result has 439 places, 431 transitions, 4724 flow [2024-06-14 11:51:43,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4978, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4724, PETRI_PLACES=439, PETRI_TRANSITIONS=431} [2024-06-14 11:51:43,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 408 predicate places. [2024-06-14 11:51:43,950 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 431 transitions, 4724 flow [2024-06-14 11:51:43,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:43,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:43,950 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 11:51:43,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 11:51:43,951 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 11:51:43,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:43,951 INFO L85 PathProgramCache]: Analyzing trace with hash -561996309, now seen corresponding path program 5 times [2024-06-14 11:51:43,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:43,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621937244] [2024-06-14 11:51:43,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:43,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:45,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:45,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621937244] [2024-06-14 11:51:45,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621937244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:45,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:45,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:45,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545870336] [2024-06-14 11:51:45,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:45,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:45,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:45,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:45,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:45,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 431 transitions, 4724 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:45,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:45,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:45,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:46,642 INFO L124 PetriNetUnfolderBase]: 1120/2016 cut-off events. [2024-06-14 11:51:46,642 INFO L125 PetriNetUnfolderBase]: For 259793/259793 co-relation queries the response was YES. [2024-06-14 11:51:46,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12598 conditions, 2016 events. 1120/2016 cut-off events. For 259793/259793 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 12085 event pairs, 181 based on Foata normal form. 8/2023 useless extension candidates. Maximal degree in co-relation 12418. Up to 1796 conditions per place. [2024-06-14 11:51:46,668 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 386 selfloop transitions, 53 changer transitions 17/458 dead transitions. [2024-06-14 11:51:46,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 458 transitions, 5781 flow [2024-06-14 11:51:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 11:51:46,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 11:51:46,669 INFO L175 Difference]: Start difference. First operand has 439 places, 431 transitions, 4724 flow. Second operand 12 states and 134 transitions. [2024-06-14 11:51:46,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 458 transitions, 5781 flow [2024-06-14 11:51:47,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 458 transitions, 5438 flow, removed 14 selfloop flow, removed 25 redundant places. [2024-06-14 11:51:47,626 INFO L231 Difference]: Finished difference. Result has 419 places, 427 transitions, 4480 flow [2024-06-14 11:51:47,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4398, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4480, PETRI_PLACES=419, PETRI_TRANSITIONS=427} [2024-06-14 11:51:47,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 388 predicate places. [2024-06-14 11:51:47,627 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 427 transitions, 4480 flow [2024-06-14 11:51:47,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:47,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:47,627 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 11:51:47,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 11:51:47,627 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 11:51:47,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash -562111629, now seen corresponding path program 6 times [2024-06-14 11:51:47,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:47,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380582111] [2024-06-14 11:51:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:49,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380582111] [2024-06-14 11:51:49,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380582111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:49,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:49,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:49,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786067498] [2024-06-14 11:51:49,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:49,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:49,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:49,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:49,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 427 transitions, 4480 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:49,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:49,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:49,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:50,240 INFO L124 PetriNetUnfolderBase]: 1104/1988 cut-off events. [2024-06-14 11:51:50,240 INFO L125 PetriNetUnfolderBase]: For 260456/260456 co-relation queries the response was YES. [2024-06-14 11:51:50,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12143 conditions, 1988 events. 1104/1988 cut-off events. For 260456/260456 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 11831 event pairs, 173 based on Foata normal form. 8/1995 useless extension candidates. Maximal degree in co-relation 11967. Up to 1673 conditions per place. [2024-06-14 11:51:50,266 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 391 selfloop transitions, 45 changer transitions 17/455 dead transitions. [2024-06-14 11:51:50,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 455 transitions, 5782 flow [2024-06-14 11:51:50,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 11:51:50,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 11:51:50,268 INFO L175 Difference]: Start difference. First operand has 419 places, 427 transitions, 4480 flow. Second operand 12 states and 140 transitions. [2024-06-14 11:51:50,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 455 transitions, 5782 flow [2024-06-14 11:51:51,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 455 transitions, 5667 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:51,193 INFO L231 Difference]: Finished difference. Result has 417 places, 417 transitions, 4372 flow [2024-06-14 11:51:51,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4367, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4372, PETRI_PLACES=417, PETRI_TRANSITIONS=417} [2024-06-14 11:51:51,194 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 386 predicate places. [2024-06-14 11:51:51,194 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 417 transitions, 4372 flow [2024-06-14 11:51:51,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:51,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:51,194 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 11:51:51,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 11:51:51,195 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 11:51:51,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:51,195 INFO L85 PathProgramCache]: Analyzing trace with hash -557350029, now seen corresponding path program 7 times [2024-06-14 11:51:51,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:51,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239206851] [2024-06-14 11:51:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:51,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:53,616 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 11:51:53,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:53,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239206851] [2024-06-14 11:51:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239206851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:53,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:53,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819900584] [2024-06-14 11:51:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:53,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:53,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:53,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:53,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 417 transitions, 4372 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:53,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:53,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:53,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:54,596 INFO L124 PetriNetUnfolderBase]: 1081/1947 cut-off events. [2024-06-14 11:51:54,597 INFO L125 PetriNetUnfolderBase]: For 260398/260398 co-relation queries the response was YES. [2024-06-14 11:51:54,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11690 conditions, 1947 events. 1081/1947 cut-off events. For 260398/260398 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 11559 event pairs, 182 based on Foata normal form. 10/1956 useless extension candidates. Maximal degree in co-relation 11515. Up to 1747 conditions per place. [2024-06-14 11:51:54,622 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 380 selfloop transitions, 37 changer transitions 20/439 dead transitions. [2024-06-14 11:51:54,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 439 transitions, 5342 flow [2024-06-14 11:51:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:54,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 11:51:54,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:51:54,623 INFO L175 Difference]: Start difference. First operand has 417 places, 417 transitions, 4372 flow. Second operand 12 states and 132 transitions. [2024-06-14 11:51:54,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 439 transitions, 5342 flow [2024-06-14 11:51:55,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 439 transitions, 5248 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-14 11:51:55,381 INFO L231 Difference]: Finished difference. Result has 411 places, 405 transitions, 4240 flow [2024-06-14 11:51:55,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4278, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4240, PETRI_PLACES=411, PETRI_TRANSITIONS=405} [2024-06-14 11:51:55,382 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 380 predicate places. [2024-06-14 11:51:55,382 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 405 transitions, 4240 flow [2024-06-14 11:51:55,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:55,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:55,383 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 11:51:55,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 11:51:55,383 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 11:51:55,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:55,383 INFO L85 PathProgramCache]: Analyzing trace with hash -557527659, now seen corresponding path program 8 times [2024-06-14 11:51:55,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:55,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186314230] [2024-06-14 11:51:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:55,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:56,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:56,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186314230] [2024-06-14 11:51:56,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186314230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:56,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:56,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:56,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820166679] [2024-06-14 11:51:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:56,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:56,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:56,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:57,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:51:57,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 405 transitions, 4240 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:57,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:57,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:51:57,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:57,844 INFO L124 PetriNetUnfolderBase]: 1015/1837 cut-off events. [2024-06-14 11:51:57,844 INFO L125 PetriNetUnfolderBase]: For 170341/170341 co-relation queries the response was YES. [2024-06-14 11:51:57,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10104 conditions, 1837 events. 1015/1837 cut-off events. For 170341/170341 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 10910 event pairs, 160 based on Foata normal form. 8/1844 useless extension candidates. Maximal degree in co-relation 9931. Up to 1673 conditions per place. [2024-06-14 11:51:57,866 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 378 selfloop transitions, 29 changer transitions 17/426 dead transitions. [2024-06-14 11:51:57,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 426 transitions, 5166 flow [2024-06-14 11:51:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:57,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 11:51:57,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 11:51:57,867 INFO L175 Difference]: Start difference. First operand has 411 places, 405 transitions, 4240 flow. Second operand 12 states and 130 transitions. [2024-06-14 11:51:57,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 426 transitions, 5166 flow [2024-06-14 11:51:58,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 426 transitions, 5088 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:58,554 INFO L231 Difference]: Finished difference. Result has 409 places, 396 transitions, 4140 flow [2024-06-14 11:51:58,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4162, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4140, PETRI_PLACES=409, PETRI_TRANSITIONS=396} [2024-06-14 11:51:58,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 378 predicate places. [2024-06-14 11:51:58,555 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 396 transitions, 4140 flow [2024-06-14 11:51:58,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:58,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:58,555 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 11:51:58,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 11:51:58,555 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 11:51:58,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1395710055, now seen corresponding path program 1 times [2024-06-14 11:51:58,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:58,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814142903] [2024-06-14 11:51:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:00,258 INFO 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 11:52:00,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:00,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814142903] [2024-06-14 11:52:00,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814142903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:00,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:00,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:00,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738548640] [2024-06-14 11:52:00,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:00,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:00,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:00,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:00,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:00,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 396 transitions, 4140 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:00,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:00,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:00,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:00,964 INFO L124 PetriNetUnfolderBase]: 991/1789 cut-off events. [2024-06-14 11:52:00,965 INFO L125 PetriNetUnfolderBase]: For 120235/120235 co-relation queries the response was YES. [2024-06-14 11:52:00,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9897 conditions, 1789 events. 991/1789 cut-off events. For 120235/120235 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 10631 event pairs, 80 based on Foata normal form. 2/1790 useless extension candidates. Maximal degree in co-relation 9725. Up to 1213 conditions per place. [2024-06-14 11:52:01,002 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 149 changer transitions 0/415 dead transitions. [2024-06-14 11:52:01,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 415 transitions, 5046 flow [2024-06-14 11:52:01,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:01,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:01,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:52:01,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:52:01,004 INFO L175 Difference]: Start difference. First operand has 409 places, 396 transitions, 4140 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:52:01,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 415 transitions, 5046 flow [2024-06-14 11:52:01,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 415 transitions, 4916 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-06-14 11:52:01,512 INFO L231 Difference]: Finished difference. Result has 397 places, 397 transitions, 4336 flow [2024-06-14 11:52:01,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4336, PETRI_PLACES=397, PETRI_TRANSITIONS=397} [2024-06-14 11:52:01,512 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 366 predicate places. [2024-06-14 11:52:01,513 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 397 transitions, 4336 flow [2024-06-14 11:52:01,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:01,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:01,513 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 11:52:01,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 11:52:01,513 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 11:52:01,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:01,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1395716999, now seen corresponding path program 9 times [2024-06-14 11:52:01,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:01,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285707479] [2024-06-14 11:52:01,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:01,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:03,570 INFO 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 11:52:03,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285707479] [2024-06-14 11:52:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285707479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:03,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404389080] [2024-06-14 11:52:03,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:03,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:03,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:03,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 397 transitions, 4336 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:03,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:03,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:03,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:04,424 INFO L124 PetriNetUnfolderBase]: 1007/1825 cut-off events. [2024-06-14 11:52:04,424 INFO L125 PetriNetUnfolderBase]: For 182659/182659 co-relation queries the response was YES. [2024-06-14 11:52:04,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10288 conditions, 1825 events. 1007/1825 cut-off events. For 182659/182659 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 10810 event pairs, 116 based on Foata normal form. 10/1834 useless extension candidates. Maximal degree in co-relation 10118. Up to 839 conditions per place. [2024-06-14 11:52:04,446 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 179 changer transitions 18/421 dead transitions. [2024-06-14 11:52:04,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 421 transitions, 5288 flow [2024-06-14 11:52:04,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 11:52:04,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-14 11:52:04,447 INFO L175 Difference]: Start difference. First operand has 397 places, 397 transitions, 4336 flow. Second operand 12 states and 154 transitions. [2024-06-14 11:52:04,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 421 transitions, 5288 flow [2024-06-14 11:52:05,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 421 transitions, 4976 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 11:52:05,034 INFO L231 Difference]: Finished difference. Result has 400 places, 385 transitions, 4297 flow [2024-06-14 11:52:05,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4024, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4297, PETRI_PLACES=400, PETRI_TRANSITIONS=385} [2024-06-14 11:52:05,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-14 11:52:05,034 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 385 transitions, 4297 flow [2024-06-14 11:52:05,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:05,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:05,035 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 11:52:05,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 11:52:05,035 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 11:52:05,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:05,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1395894629, now seen corresponding path program 10 times [2024-06-14 11:52:05,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:05,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894843801] [2024-06-14 11:52:05,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:05,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:06,331 INFO 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 11:52:06,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:06,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894843801] [2024-06-14 11:52:06,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894843801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:06,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:06,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:52:06,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815401396] [2024-06-14 11:52:06,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:06,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:52:06,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:06,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:52:06,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:52:06,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:06,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 385 transitions, 4297 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 11:52:06,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:06,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:06,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:07,132 INFO L124 PetriNetUnfolderBase]: 999/1833 cut-off events. [2024-06-14 11:52:07,132 INFO L125 PetriNetUnfolderBase]: For 266366/266366 co-relation queries the response was YES. [2024-06-14 11:52:07,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11907 conditions, 1833 events. 999/1833 cut-off events. For 266366/266366 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 10955 event pairs, 128 based on Foata normal form. 8/1840 useless extension candidates. Maximal degree in co-relation 11736. Up to 805 conditions per place. [2024-06-14 11:52:07,155 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 174 changer transitions 11/412 dead transitions. [2024-06-14 11:52:07,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 412 transitions, 5531 flow [2024-06-14 11:52:07,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 11:52:07,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-14 11:52:07,156 INFO L175 Difference]: Start difference. First operand has 400 places, 385 transitions, 4297 flow. Second operand 11 states and 146 transitions. [2024-06-14 11:52:07,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 412 transitions, 5531 flow [2024-06-14 11:52:07,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 412 transitions, 5157 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 11:52:07,987 INFO L231 Difference]: Finished difference. Result has 395 places, 379 transitions, 4232 flow [2024-06-14 11:52:07,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3929, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4232, PETRI_PLACES=395, PETRI_TRANSITIONS=379} [2024-06-14 11:52:07,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-14 11:52:07,987 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 379 transitions, 4232 flow [2024-06-14 11:52:07,988 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 11:52:07,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:07,988 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 11:52:07,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 11:52:07,988 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 11:52:07,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:07,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1389223305, now seen corresponding path program 2 times [2024-06-14 11:52:07,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:07,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309952253] [2024-06-14 11:52:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:07,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:10,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:10,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309952253] [2024-06-14 11:52:10,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309952253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:10,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:10,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:10,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965139894] [2024-06-14 11:52:10,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:10,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:10,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:10,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:10,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:10,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:10,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 379 transitions, 4232 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:10,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:10,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:10,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:10,982 INFO L124 PetriNetUnfolderBase]: 972/1780 cut-off events. [2024-06-14 11:52:10,982 INFO L125 PetriNetUnfolderBase]: For 195653/195653 co-relation queries the response was YES. [2024-06-14 11:52:10,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11369 conditions, 1780 events. 972/1780 cut-off events. For 195653/195653 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 10561 event pairs, 88 based on Foata normal form. 2/1781 useless extension candidates. Maximal degree in co-relation 11200. Up to 1179 conditions per place. [2024-06-14 11:52:11,003 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 155 changer transitions 0/397 dead transitions. [2024-06-14 11:52:11,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 397 transitions, 5098 flow [2024-06-14 11:52:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:11,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:52:11,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:52:11,004 INFO L175 Difference]: Start difference. First operand has 395 places, 379 transitions, 4232 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:52:11,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 397 transitions, 5098 flow [2024-06-14 11:52:11,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 397 transitions, 4756 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:52:11,769 INFO L231 Difference]: Finished difference. Result has 393 places, 380 transitions, 4230 flow [2024-06-14 11:52:11,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3890, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4230, PETRI_PLACES=393, PETRI_TRANSITIONS=380} [2024-06-14 11:52:11,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 362 predicate places. [2024-06-14 11:52:11,769 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 380 transitions, 4230 flow [2024-06-14 11:52:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:11,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:11,770 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 11:52:11,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 11:52:11,770 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 11:52:11,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:11,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1389214935, now seen corresponding path program 3 times [2024-06-14 11:52:11,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:11,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574048987] [2024-06-14 11:52:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:11,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:13,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:13,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574048987] [2024-06-14 11:52:13,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574048987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:13,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:13,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:13,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919027543] [2024-06-14 11:52:13,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:13,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:13,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:13,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:13,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 380 transitions, 4230 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:13,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:13,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:13,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:14,148 INFO L124 PetriNetUnfolderBase]: 1012/1860 cut-off events. [2024-06-14 11:52:14,149 INFO L125 PetriNetUnfolderBase]: For 286140/286140 co-relation queries the response was YES. [2024-06-14 11:52:14,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13224 conditions, 1860 events. 1012/1860 cut-off events. For 286140/286140 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11155 event pairs, 139 based on Foata normal form. 2/1861 useless extension candidates. Maximal degree in co-relation 13056. Up to 838 conditions per place. [2024-06-14 11:52:14,171 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 195 changer transitions 0/405 dead transitions. [2024-06-14 11:52:14,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 405 transitions, 5438 flow [2024-06-14 11:52:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 11:52:14,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 11:52:14,172 INFO L175 Difference]: Start difference. First operand has 393 places, 380 transitions, 4230 flow. Second operand 11 states and 144 transitions. [2024-06-14 11:52:14,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 405 transitions, 5438 flow [2024-06-14 11:52:15,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 405 transitions, 5112 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 11:52:15,247 INFO L231 Difference]: Finished difference. Result has 395 places, 382 transitions, 4348 flow [2024-06-14 11:52:15,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4348, PETRI_PLACES=395, PETRI_TRANSITIONS=382} [2024-06-14 11:52:15,247 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 364 predicate places. [2024-06-14 11:52:15,247 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 382 transitions, 4348 flow [2024-06-14 11:52:15,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:15,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:15,248 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 11:52:15,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 11:52:15,248 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:15,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:15,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1994786573, now seen corresponding path program 11 times [2024-06-14 11:52:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:15,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481288008] [2024-06-14 11:52:15,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:15,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:17,001 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 11:52:17,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:17,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481288008] [2024-06-14 11:52:17,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481288008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:17,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545948573] [2024-06-14 11:52:17,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:17,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:17,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:17,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:17,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 382 transitions, 4348 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:17,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:17,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:17,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:17,970 INFO L124 PetriNetUnfolderBase]: 1014/1870 cut-off events. [2024-06-14 11:52:17,971 INFO L125 PetriNetUnfolderBase]: For 321043/321043 co-relation queries the response was YES. [2024-06-14 11:52:17,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12855 conditions, 1870 events. 1014/1870 cut-off events. For 321043/321043 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 11283 event pairs, 119 based on Foata normal form. 10/1879 useless extension candidates. Maximal degree in co-relation 12686. Up to 1236 conditions per place. [2024-06-14 11:52:17,995 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 243 selfloop transitions, 145 changer transitions 15/405 dead transitions. [2024-06-14 11:52:17,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 405 transitions, 5262 flow [2024-06-14 11:52:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:17,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 11:52:17,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 11:52:17,996 INFO L175 Difference]: Start difference. First operand has 395 places, 382 transitions, 4348 flow. Second operand 12 states and 146 transitions. [2024-06-14 11:52:17,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 405 transitions, 5262 flow [2024-06-14 11:52:18,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 405 transitions, 4989 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 11:52:18,885 INFO L231 Difference]: Finished difference. Result has 400 places, 375 transitions, 4303 flow [2024-06-14 11:52:18,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4303, PETRI_PLACES=400, PETRI_TRANSITIONS=375} [2024-06-14 11:52:18,886 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 369 predicate places. [2024-06-14 11:52:18,886 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 375 transitions, 4303 flow [2024-06-14 11:52:18,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:18,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:18,886 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 11:52:18,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 11:52:18,886 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:18,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2123049203, now seen corresponding path program 12 times [2024-06-14 11:52:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872897945] [2024-06-14 11:52:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:20,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:20,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872897945] [2024-06-14 11:52:20,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872897945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:20,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:20,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:20,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172838100] [2024-06-14 11:52:20,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:20,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:20,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:20,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:20,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:20,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:20,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 375 transitions, 4303 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:20,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:20,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:20,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:21,238 INFO L124 PetriNetUnfolderBase]: 990/1838 cut-off events. [2024-06-14 11:52:21,238 INFO L125 PetriNetUnfolderBase]: For 325459/325459 co-relation queries the response was YES. [2024-06-14 11:52:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12867 conditions, 1838 events. 990/1838 cut-off events. For 325459/325459 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11086 event pairs, 109 based on Foata normal form. 10/1847 useless extension candidates. Maximal degree in co-relation 12696. Up to 1117 conditions per place. [2024-06-14 11:52:21,263 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 161 changer transitions 14/399 dead transitions. [2024-06-14 11:52:21,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 399 transitions, 5211 flow [2024-06-14 11:52:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:21,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 11:52:21,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 11:52:21,264 INFO L175 Difference]: Start difference. First operand has 400 places, 375 transitions, 4303 flow. Second operand 12 states and 152 transitions. [2024-06-14 11:52:21,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 399 transitions, 5211 flow [2024-06-14 11:52:22,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 399 transitions, 4917 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:22,238 INFO L231 Difference]: Finished difference. Result has 398 places, 369 transitions, 4285 flow [2024-06-14 11:52:22,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4285, PETRI_PLACES=398, PETRI_TRANSITIONS=369} [2024-06-14 11:52:22,238 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 367 predicate places. [2024-06-14 11:52:22,238 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 369 transitions, 4285 flow [2024-06-14 11:52:22,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:22,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:22,239 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 11:52:22,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 11:52:22,239 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:22,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1566597059, now seen corresponding path program 13 times [2024-06-14 11:52:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:22,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554725157] [2024-06-14 11:52:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:22,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:23,582 INFO 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 11:52:23,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:23,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554725157] [2024-06-14 11:52:23,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554725157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:23,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:23,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:23,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135824501] [2024-06-14 11:52:23,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:23,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:23,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:23,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:23,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 369 transitions, 4285 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:23,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:23,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:23,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:24,453 INFO L124 PetriNetUnfolderBase]: 970/1806 cut-off events. [2024-06-14 11:52:24,453 INFO L125 PetriNetUnfolderBase]: For 304473/304473 co-relation queries the response was YES. [2024-06-14 11:52:24,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12724 conditions, 1806 events. 970/1806 cut-off events. For 304473/304473 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 10861 event pairs, 133 based on Foata normal form. 8/1813 useless extension candidates. Maximal degree in co-relation 12554. Up to 874 conditions per place. [2024-06-14 11:52:24,477 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 179 changer transitions 13/392 dead transitions. [2024-06-14 11:52:24,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 392 transitions, 5161 flow [2024-06-14 11:52:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 11:52:24,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 11:52:24,481 INFO L175 Difference]: Start difference. First operand has 398 places, 369 transitions, 4285 flow. Second operand 12 states and 150 transitions. [2024-06-14 11:52:24,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 392 transitions, 5161 flow [2024-06-14 11:52:25,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 392 transitions, 4835 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:25,402 INFO L231 Difference]: Finished difference. Result has 396 places, 364 transitions, 4280 flow [2024-06-14 11:52:25,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3959, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4280, PETRI_PLACES=396, PETRI_TRANSITIONS=364} [2024-06-14 11:52:25,403 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 365 predicate places. [2024-06-14 11:52:25,403 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 364 transitions, 4280 flow [2024-06-14 11:52:25,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:25,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:25,404 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 11:52:25,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 11:52:25,404 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:25,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:25,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1566712379, now seen corresponding path program 14 times [2024-06-14 11:52:25,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:25,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366297548] [2024-06-14 11:52:25,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:25,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:27,105 INFO 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 11:52:27,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:27,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366297548] [2024-06-14 11:52:27,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366297548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:27,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:27,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:27,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352043582] [2024-06-14 11:52:27,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:27,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:27,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:27,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:27,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:27,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:27,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 364 transitions, 4280 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:27,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:27,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:27,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:27,959 INFO L124 PetriNetUnfolderBase]: 989/1847 cut-off events. [2024-06-14 11:52:27,960 INFO L125 PetriNetUnfolderBase]: For 376710/376710 co-relation queries the response was YES. [2024-06-14 11:52:27,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14145 conditions, 1847 events. 989/1847 cut-off events. For 376710/376710 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11112 event pairs, 118 based on Foata normal form. 8/1854 useless extension candidates. Maximal degree in co-relation 13976. Up to 984 conditions per place. [2024-06-14 11:52:27,984 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 152 changer transitions 14/393 dead transitions. [2024-06-14 11:52:27,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 393 transitions, 5458 flow [2024-06-14 11:52:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 11:52:27,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-14 11:52:27,985 INFO L175 Difference]: Start difference. First operand has 396 places, 364 transitions, 4280 flow. Second operand 12 states and 155 transitions. [2024-06-14 11:52:27,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 393 transitions, 5458 flow [2024-06-14 11:52:29,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 393 transitions, 5085 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:29,105 INFO L231 Difference]: Finished difference. Result has 392 places, 357 transitions, 4155 flow [2024-06-14 11:52:29,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3911, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4155, PETRI_PLACES=392, PETRI_TRANSITIONS=357} [2024-06-14 11:52:29,106 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 361 predicate places. [2024-06-14 11:52:29,106 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 357 transitions, 4155 flow [2024-06-14 11:52:29,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:29,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:29,106 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 11:52:29,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 11:52:29,107 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:29,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1561943835, now seen corresponding path program 4 times [2024-06-14 11:52:29,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:29,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498403949] [2024-06-14 11:52:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:29,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:30,657 INFO 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 11:52:30,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498403949] [2024-06-14 11:52:30,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498403949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:30,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:30,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:30,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494753349] [2024-06-14 11:52:30,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:30,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:30,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:30,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:30,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:30,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 357 transitions, 4155 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:30,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:30,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:30,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:31,388 INFO L124 PetriNetUnfolderBase]: 945/1763 cut-off events. [2024-06-14 11:52:31,388 INFO L125 PetriNetUnfolderBase]: For 310693/310693 co-relation queries the response was YES. [2024-06-14 11:52:31,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12207 conditions, 1763 events. 945/1763 cut-off events. For 310693/310693 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 10594 event pairs, 140 based on Foata normal form. 12/1774 useless extension candidates. Maximal degree in co-relation 12040. Up to 875 conditions per place. [2024-06-14 11:52:31,409 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 160 changer transitions 10/380 dead transitions. [2024-06-14 11:52:31,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 380 transitions, 5023 flow [2024-06-14 11:52:31,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:31,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 11:52:31,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:52:31,410 INFO L175 Difference]: Start difference. First operand has 392 places, 357 transitions, 4155 flow. Second operand 11 states and 143 transitions. [2024-06-14 11:52:31,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 380 transitions, 5023 flow [2024-06-14 11:52:32,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 380 transitions, 4663 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-14 11:52:32,184 INFO L231 Difference]: Finished difference. Result has 384 places, 351 transitions, 4067 flow [2024-06-14 11:52:32,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4067, PETRI_PLACES=384, PETRI_TRANSITIONS=351} [2024-06-14 11:52:32,185 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 353 predicate places. [2024-06-14 11:52:32,185 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 351 transitions, 4067 flow [2024-06-14 11:52:32,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:32,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:32,185 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 11:52:32,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 11:52:32,185 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:32,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:32,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1561950779, now seen corresponding path program 15 times [2024-06-14 11:52:32,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:32,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515246353] [2024-06-14 11:52:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:32,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:34,475 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 11:52:34,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:34,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515246353] [2024-06-14 11:52:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515246353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:34,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:34,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:34,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333509324] [2024-06-14 11:52:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:34,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:34,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:34,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:34,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:34,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:34,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 351 transitions, 4067 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:34,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:34,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:34,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:35,309 INFO L124 PetriNetUnfolderBase]: 922/1726 cut-off events. [2024-06-14 11:52:35,309 INFO L125 PetriNetUnfolderBase]: For 266240/266240 co-relation queries the response was YES. [2024-06-14 11:52:35,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11661 conditions, 1726 events. 922/1726 cut-off events. For 266240/266240 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10389 event pairs, 117 based on Foata normal form. 10/1735 useless extension candidates. Maximal degree in co-relation 11498. Up to 1072 conditions per place. [2024-06-14 11:52:35,328 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 132 changer transitions 15/375 dead transitions. [2024-06-14 11:52:35,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 375 transitions, 4927 flow [2024-06-14 11:52:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:35,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 11:52:35,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 11:52:35,329 INFO L175 Difference]: Start difference. First operand has 384 places, 351 transitions, 4067 flow. Second operand 12 states and 148 transitions. [2024-06-14 11:52:35,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 375 transitions, 4927 flow [2024-06-14 11:52:36,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 375 transitions, 4542 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 11:52:36,026 INFO L231 Difference]: Finished difference. Result has 382 places, 342 transitions, 3871 flow [2024-06-14 11:52:36,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3871, PETRI_PLACES=382, PETRI_TRANSITIONS=342} [2024-06-14 11:52:36,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 351 predicate places. [2024-06-14 11:52:36,026 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 342 transitions, 3871 flow [2024-06-14 11:52:36,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:36,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:36,026 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 11:52:36,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 11:52:36,026 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:36,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:36,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1562128409, now seen corresponding path program 16 times [2024-06-14 11:52:36,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:36,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313043453] [2024-06-14 11:52:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:36,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:37,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:37,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313043453] [2024-06-14 11:52:37,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313043453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:37,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:37,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:37,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775030613] [2024-06-14 11:52:37,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:37,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:37,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:37,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 342 transitions, 3871 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:37,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:37,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:37,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:38,606 INFO L124 PetriNetUnfolderBase]: 866/1630 cut-off events. [2024-06-14 11:52:38,606 INFO L125 PetriNetUnfolderBase]: For 193593/193593 co-relation queries the response was YES. [2024-06-14 11:52:38,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10116 conditions, 1630 events. 866/1630 cut-off events. For 193593/193593 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9728 event pairs, 110 based on Foata normal form. 8/1637 useless extension candidates. Maximal degree in co-relation 9954. Up to 763 conditions per place. [2024-06-14 11:52:38,626 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 197 selfloop transitions, 152 changer transitions 14/365 dead transitions. [2024-06-14 11:52:38,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 365 transitions, 4693 flow [2024-06-14 11:52:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:38,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 11:52:38,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 11:52:38,627 INFO L175 Difference]: Start difference. First operand has 382 places, 342 transitions, 3871 flow. Second operand 12 states and 147 transitions. [2024-06-14 11:52:38,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 365 transitions, 4693 flow [2024-06-14 11:52:39,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 365 transitions, 4398 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-14 11:52:39,279 INFO L231 Difference]: Finished difference. Result has 376 places, 336 transitions, 3834 flow [2024-06-14 11:52:39,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3834, PETRI_PLACES=376, PETRI_TRANSITIONS=336} [2024-06-14 11:52:39,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 345 predicate places. [2024-06-14 11:52:39,279 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 336 transitions, 3834 flow [2024-06-14 11:52:39,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:39,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:39,279 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 11:52:39,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 11:52:39,280 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:39,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:39,280 INFO L85 PathProgramCache]: Analyzing trace with hash 823045911, now seen corresponding path program 5 times [2024-06-14 11:52:39,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:39,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966797526] [2024-06-14 11:52:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:39,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:40,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:40,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966797526] [2024-06-14 11:52:40,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966797526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:40,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:40,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:40,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359437126] [2024-06-14 11:52:40,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:40,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:40,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:40,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:40,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:40,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:40,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 336 transitions, 3834 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:40,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:40,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:40,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:41,360 INFO L124 PetriNetUnfolderBase]: 854/1610 cut-off events. [2024-06-14 11:52:41,360 INFO L125 PetriNetUnfolderBase]: For 183219/183219 co-relation queries the response was YES. [2024-06-14 11:52:41,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10019 conditions, 1610 events. 854/1610 cut-off events. For 183219/183219 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9611 event pairs, 152 based on Foata normal form. 8/1617 useless extension candidates. Maximal degree in co-relation 9860. Up to 1477 conditions per place. [2024-06-14 11:52:41,378 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 310 selfloop transitions, 29 changer transitions 16/357 dead transitions. [2024-06-14 11:52:41,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 357 transitions, 4640 flow [2024-06-14 11:52:41,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:52:41,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 11:52:41,379 INFO L175 Difference]: Start difference. First operand has 376 places, 336 transitions, 3834 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:52:41,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 357 transitions, 4640 flow [2024-06-14 11:52:41,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 357 transitions, 4199 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-14 11:52:41,933 INFO L231 Difference]: Finished difference. Result has 368 places, 330 transitions, 3360 flow [2024-06-14 11:52:41,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3393, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3360, PETRI_PLACES=368, PETRI_TRANSITIONS=330} [2024-06-14 11:52:41,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 337 predicate places. [2024-06-14 11:52:41,934 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 330 transitions, 3360 flow [2024-06-14 11:52:41,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:41,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:41,934 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 11:52:41,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 11:52:41,934 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:41,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:41,934 INFO L85 PathProgramCache]: Analyzing trace with hash 953599635, now seen corresponding path program 6 times [2024-06-14 11:52:41,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:41,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991462187] [2024-06-14 11:52:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:41,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:43,347 INFO 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 11:52:43,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:43,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991462187] [2024-06-14 11:52:43,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991462187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:43,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:43,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:43,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141341074] [2024-06-14 11:52:43,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:43,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:43,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:43,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 330 transitions, 3360 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:43,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:43,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:43,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:44,049 INFO L124 PetriNetUnfolderBase]: 837/1579 cut-off events. [2024-06-14 11:52:44,049 INFO L125 PetriNetUnfolderBase]: For 178446/178446 co-relation queries the response was YES. [2024-06-14 11:52:44,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9447 conditions, 1579 events. 837/1579 cut-off events. For 178446/178446 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9371 event pairs, 135 based on Foata normal form. 8/1586 useless extension candidates. Maximal degree in co-relation 9290. Up to 1448 conditions per place. [2024-06-14 11:52:44,067 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 303 selfloop transitions, 28 changer transitions 17/350 dead transitions. [2024-06-14 11:52:44,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 350 transitions, 4144 flow [2024-06-14 11:52:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:52:44,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 11:52:44,068 INFO L175 Difference]: Start difference. First operand has 368 places, 330 transitions, 3360 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:52:44,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 350 transitions, 4144 flow [2024-06-14 11:52:44,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 350 transitions, 4078 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:52:44,639 INFO L231 Difference]: Finished difference. Result has 364 places, 324 transitions, 3311 flow [2024-06-14 11:52:44,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3311, PETRI_PLACES=364, PETRI_TRANSITIONS=324} [2024-06-14 11:52:44,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-14 11:52:44,640 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 324 transitions, 3311 flow [2024-06-14 11:52:44,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:44,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:44,640 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 11:52:44,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 11:52:44,640 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:44,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:44,640 INFO L85 PathProgramCache]: Analyzing trace with hash 586862181, now seen corresponding path program 7 times [2024-06-14 11:52:44,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:44,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046924600] [2024-06-14 11:52:44,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:44,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:46,255 INFO 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 11:52:46,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:46,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046924600] [2024-06-14 11:52:46,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046924600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:46,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:46,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:52:46,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830342943] [2024-06-14 11:52:46,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:46,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:52:46,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:52:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:52:46,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:46,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 324 transitions, 3311 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 11:52:46,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:46,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:46,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:46,819 INFO L124 PetriNetUnfolderBase]: 813/1527 cut-off events. [2024-06-14 11:52:46,819 INFO L125 PetriNetUnfolderBase]: For 137557/137557 co-relation queries the response was YES. [2024-06-14 11:52:46,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9247 conditions, 1527 events. 813/1527 cut-off events. For 137557/137557 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9002 event pairs, 140 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 9092. Up to 1405 conditions per place. [2024-06-14 11:52:46,838 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 296 selfloop transitions, 44 changer transitions 0/342 dead transitions. [2024-06-14 11:52:46,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 342 transitions, 4071 flow [2024-06-14 11:52:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 11:52:46,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:52:46,839 INFO L175 Difference]: Start difference. First operand has 364 places, 324 transitions, 3311 flow. Second operand 11 states and 128 transitions. [2024-06-14 11:52:46,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 342 transitions, 4071 flow [2024-06-14 11:52:47,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 342 transitions, 4007 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:52:47,363 INFO L231 Difference]: Finished difference. Result has 357 places, 325 transitions, 3368 flow [2024-06-14 11:52:47,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3247, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3368, PETRI_PLACES=357, PETRI_TRANSITIONS=325} [2024-06-14 11:52:47,363 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-14 11:52:47,363 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 325 transitions, 3368 flow [2024-06-14 11:52:47,363 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 11:52:47,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:47,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:47,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 11:52:47,363 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:47,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash 559478053, now seen corresponding path program 8 times [2024-06-14 11:52:47,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:47,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598388287] [2024-06-14 11:52:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:47,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:49,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:49,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598388287] [2024-06-14 11:52:49,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598388287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:49,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:49,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:49,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324159011] [2024-06-14 11:52:49,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:49,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:49,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:49,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:49,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 325 transitions, 3368 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:49,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:49,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:49,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:50,153 INFO L124 PetriNetUnfolderBase]: 817/1535 cut-off events. [2024-06-14 11:52:50,154 INFO L125 PetriNetUnfolderBase]: For 133391/133391 co-relation queries the response was YES. [2024-06-14 11:52:50,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9328 conditions, 1535 events. 817/1535 cut-off events. For 133391/133391 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9036 event pairs, 127 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 9176. Up to 1369 conditions per place. [2024-06-14 11:52:50,169 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 288 selfloop transitions, 53 changer transitions 0/343 dead transitions. [2024-06-14 11:52:50,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 343 transitions, 4132 flow [2024-06-14 11:52:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 11:52:50,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:52:50,171 INFO L175 Difference]: Start difference. First operand has 357 places, 325 transitions, 3368 flow. Second operand 11 states and 132 transitions. [2024-06-14 11:52:50,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 343 transitions, 4132 flow [2024-06-14 11:52:50,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 343 transitions, 4023 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 11:52:50,592 INFO L231 Difference]: Finished difference. Result has 359 places, 326 transitions, 3400 flow [2024-06-14 11:52:50,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3400, PETRI_PLACES=359, PETRI_TRANSITIONS=326} [2024-06-14 11:52:50,593 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-14 11:52:50,593 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 326 transitions, 3400 flow [2024-06-14 11:52:50,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:50,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:50,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:50,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 11:52:50,593 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:50,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash 586682257, now seen corresponding path program 17 times [2024-06-14 11:52:50,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:50,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033005771] [2024-06-14 11:52:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:50,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:52,154 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 11:52:52,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:52,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033005771] [2024-06-14 11:52:52,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033005771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:52,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:52,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:52,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637915328] [2024-06-14 11:52:52,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:52,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:52,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:52,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:52,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:52,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:52,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 326 transitions, 3400 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:52,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:52,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:52,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:52,962 INFO L124 PetriNetUnfolderBase]: 833/1571 cut-off events. [2024-06-14 11:52:52,962 INFO L125 PetriNetUnfolderBase]: For 187457/187457 co-relation queries the response was YES. [2024-06-14 11:52:52,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9487 conditions, 1571 events. 833/1571 cut-off events. For 187457/187457 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9314 event pairs, 144 based on Foata normal form. 10/1580 useless extension candidates. Maximal degree in co-relation 9334. Up to 1372 conditions per place. [2024-06-14 11:52:52,981 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 291 selfloop transitions, 49 changer transitions 9/351 dead transitions. [2024-06-14 11:52:52,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 351 transitions, 4214 flow [2024-06-14 11:52:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:52:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:52:52,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-14 11:52:52,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36778846153846156 [2024-06-14 11:52:52,982 INFO L175 Difference]: Start difference. First operand has 359 places, 326 transitions, 3400 flow. Second operand 13 states and 153 transitions. [2024-06-14 11:52:52,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 351 transitions, 4214 flow [2024-06-14 11:52:53,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 351 transitions, 4085 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 11:52:53,477 INFO L231 Difference]: Finished difference. Result has 363 places, 323 transitions, 3353 flow [2024-06-14 11:52:53,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3271, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3353, PETRI_PLACES=363, PETRI_TRANSITIONS=323} [2024-06-14 11:52:53,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-14 11:52:53,478 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 323 transitions, 3353 flow [2024-06-14 11:52:53,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:53,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:53,478 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 11:52:53,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 11:52:53,479 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:53,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash 593357301, now seen corresponding path program 9 times [2024-06-14 11:52:53,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:53,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10680504] [2024-06-14 11:52:53,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:53,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:55,397 INFO 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 11:52:55,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:55,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10680504] [2024-06-14 11:52:55,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10680504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:55,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:55,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:55,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410758311] [2024-06-14 11:52:55,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:55,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:55,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:55,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:55,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:55,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:55,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 323 transitions, 3353 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:55,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:55,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:55,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:56,028 INFO L124 PetriNetUnfolderBase]: 813/1531 cut-off events. [2024-06-14 11:52:56,029 INFO L125 PetriNetUnfolderBase]: For 137697/137697 co-relation queries the response was YES. [2024-06-14 11:52:56,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9322 conditions, 1531 events. 813/1531 cut-off events. For 137697/137697 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9025 event pairs, 136 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 9168. Up to 1356 conditions per place. [2024-06-14 11:52:56,047 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 291 selfloop transitions, 48 changer transitions 0/341 dead transitions. [2024-06-14 11:52:56,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 341 transitions, 4111 flow [2024-06-14 11:52:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 11:52:56,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 11:52:56,048 INFO L175 Difference]: Start difference. First operand has 363 places, 323 transitions, 3353 flow. Second operand 11 states and 130 transitions. [2024-06-14 11:52:56,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 341 transitions, 4111 flow [2024-06-14 11:52:56,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 341 transitions, 4013 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 11:52:56,557 INFO L231 Difference]: Finished difference. Result has 361 places, 324 transitions, 3387 flow [2024-06-14 11:52:56,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3387, PETRI_PLACES=361, PETRI_TRANSITIONS=324} [2024-06-14 11:52:56,557 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-14 11:52:56,558 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 324 transitions, 3387 flow [2024-06-14 11:52:56,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:56,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:56,558 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 11:52:56,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 11:52:56,558 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:56,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1301294557, now seen corresponding path program 18 times [2024-06-14 11:52:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:56,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242220525] [2024-06-14 11:52:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:56,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:57,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:57,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242220525] [2024-06-14 11:52:57,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242220525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:57,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:57,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657058011] [2024-06-14 11:52:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:57,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:57,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:57,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:58,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:52:58,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 324 transitions, 3387 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:58,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:58,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:52:58,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:58,772 INFO L124 PetriNetUnfolderBase]: 854/1618 cut-off events. [2024-06-14 11:52:58,772 INFO L125 PetriNetUnfolderBase]: For 243415/243415 co-relation queries the response was YES. [2024-06-14 11:52:58,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10844 conditions, 1618 events. 854/1618 cut-off events. For 243415/243415 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9636 event pairs, 141 based on Foata normal form. 8/1625 useless extension candidates. Maximal degree in co-relation 10690. Up to 1128 conditions per place. [2024-06-14 11:52:58,789 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 85 changer transitions 10/352 dead transitions. [2024-06-14 11:52:58,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 352 transitions, 4459 flow [2024-06-14 11:52:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 11:52:58,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 11:52:58,790 INFO L175 Difference]: Start difference. First operand has 361 places, 324 transitions, 3387 flow. Second operand 12 states and 150 transitions. [2024-06-14 11:52:58,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 352 transitions, 4459 flow [2024-06-14 11:52:59,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 352 transitions, 4337 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:52:59,417 INFO L231 Difference]: Finished difference. Result has 364 places, 321 transitions, 3419 flow [2024-06-14 11:52:59,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3419, PETRI_PLACES=364, PETRI_TRANSITIONS=321} [2024-06-14 11:52:59,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-14 11:52:59,417 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 321 transitions, 3419 flow [2024-06-14 11:52:59,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:59,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:59,417 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 11:52:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 11:52:59,417 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:52:59,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1301179237, now seen corresponding path program 19 times [2024-06-14 11:52:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:59,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017484370] [2024-06-14 11:52:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:00,840 INFO 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 11:53:00,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017484370] [2024-06-14 11:53:00,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017484370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:00,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:00,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:00,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833116155] [2024-06-14 11:53:00,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:00,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:00,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:00,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:00,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 321 transitions, 3419 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:00,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:00,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:00,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:01,672 INFO L124 PetriNetUnfolderBase]: 895/1705 cut-off events. [2024-06-14 11:53:01,672 INFO L125 PetriNetUnfolderBase]: For 368355/368355 co-relation queries the response was YES. [2024-06-14 11:53:01,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13419 conditions, 1705 events. 895/1705 cut-off events. For 368355/368355 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 10260 event pairs, 176 based on Foata normal form. 8/1712 useless extension candidates. Maximal degree in co-relation 13264. Up to 1233 conditions per place. [2024-06-14 11:53:01,694 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 269 selfloop transitions, 68 changer transitions 9/348 dead transitions. [2024-06-14 11:53:01,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 348 transitions, 4513 flow [2024-06-14 11:53:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 11:53:01,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 11:53:01,695 INFO L175 Difference]: Start difference. First operand has 364 places, 321 transitions, 3419 flow. Second operand 11 states and 142 transitions. [2024-06-14 11:53:01,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 348 transitions, 4513 flow [2024-06-14 11:53:02,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 348 transitions, 4421 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 11:53:02,767 INFO L231 Difference]: Finished difference. Result has 362 places, 317 transitions, 3429 flow [2024-06-14 11:53:02,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3429, PETRI_PLACES=362, PETRI_TRANSITIONS=317} [2024-06-14 11:53:02,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-14 11:53:02,768 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 317 transitions, 3429 flow [2024-06-14 11:53:02,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:02,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:02,768 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 11:53:02,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 11:53:02,768 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:02,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:02,768 INFO L85 PathProgramCache]: Analyzing trace with hash 593111347, now seen corresponding path program 20 times [2024-06-14 11:53:02,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:02,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267014552] [2024-06-14 11:53:02,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:02,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:04,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:04,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267014552] [2024-06-14 11:53:04,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267014552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:04,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:04,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:04,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607164407] [2024-06-14 11:53:04,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:04,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:04,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:04,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:04,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:04,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:04,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 317 transitions, 3429 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:04,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:04,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:04,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:05,525 INFO L124 PetriNetUnfolderBase]: 895/1713 cut-off events. [2024-06-14 11:53:05,525 INFO L125 PetriNetUnfolderBase]: For 406860/406860 co-relation queries the response was YES. [2024-06-14 11:53:05,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13427 conditions, 1713 events. 895/1713 cut-off events. For 406860/406860 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 10400 event pairs, 198 based on Foata normal form. 16/1728 useless extension candidates. Maximal degree in co-relation 13287. Up to 1513 conditions per place. [2024-06-14 11:53:05,542 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 37 changer transitions 19/339 dead transitions. [2024-06-14 11:53:05,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 339 transitions, 4205 flow [2024-06-14 11:53:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:53:05,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:53:05,543 INFO L175 Difference]: Start difference. First operand has 362 places, 317 transitions, 3429 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:53:05,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 339 transitions, 4205 flow [2024-06-14 11:53:06,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 339 transitions, 4073 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:53:06,387 INFO L231 Difference]: Finished difference. Result has 361 places, 308 transitions, 3277 flow [2024-06-14 11:53:06,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3277, PETRI_PLACES=361, PETRI_TRANSITIONS=308} [2024-06-14 11:53:06,388 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-14 11:53:06,388 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 308 transitions, 3277 flow [2024-06-14 11:53:06,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:06,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:06,388 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 11:53:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 11:53:06,388 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:06,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:06,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1296526013, now seen corresponding path program 10 times [2024-06-14 11:53:06,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:06,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987599828] [2024-06-14 11:53:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:08,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:08,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987599828] [2024-06-14 11:53:08,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987599828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:08,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:08,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:08,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180846181] [2024-06-14 11:53:08,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:08,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:08,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:08,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:08,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:08,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:08,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 308 transitions, 3277 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 11:53:08,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:08,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:08,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:08,683 INFO L124 PetriNetUnfolderBase]: 838/1606 cut-off events. [2024-06-14 11:53:08,683 INFO L125 PetriNetUnfolderBase]: For 298646/298646 co-relation queries the response was YES. [2024-06-14 11:53:08,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12594 conditions, 1606 events. 838/1606 cut-off events. For 298646/298646 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9595 event pairs, 169 based on Foata normal form. 2/1607 useless extension candidates. Maximal degree in co-relation 12455. Up to 1418 conditions per place. [2024-06-14 11:53:08,703 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 260 selfloop transitions, 64 changer transitions 0/326 dead transitions. [2024-06-14 11:53:08,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 326 transitions, 4011 flow [2024-06-14 11:53:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:53:08,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 11:53:08,704 INFO L175 Difference]: Start difference. First operand has 361 places, 308 transitions, 3277 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:53:08,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 326 transitions, 4011 flow [2024-06-14 11:53:09,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 326 transitions, 3925 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:09,615 INFO L231 Difference]: Finished difference. Result has 354 places, 309 transitions, 3358 flow [2024-06-14 11:53:09,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3358, PETRI_PLACES=354, PETRI_TRANSITIONS=309} [2024-06-14 11:53:09,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-14 11:53:09,616 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 309 transitions, 3358 flow [2024-06-14 11:53:09,616 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 11:53:09,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:09,616 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 11:53:09,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 11:53:09,617 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:09,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:09,617 INFO L85 PathProgramCache]: Analyzing trace with hash 586855237, now seen corresponding path program 21 times [2024-06-14 11:53:09,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:09,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033253433] [2024-06-14 11:53:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:09,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:11,279 INFO 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 11:53:11,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:11,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033253433] [2024-06-14 11:53:11,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033253433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:11,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:11,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:11,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102541566] [2024-06-14 11:53:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:11,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:11,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:11,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:11,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:11,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 309 transitions, 3358 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:11,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:11,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:11,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:12,078 INFO L124 PetriNetUnfolderBase]: 862/1662 cut-off events. [2024-06-14 11:53:12,078 INFO L125 PetriNetUnfolderBase]: For 366707/366707 co-relation queries the response was YES. [2024-06-14 11:53:12,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12743 conditions, 1662 events. 862/1662 cut-off events. For 366707/366707 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10075 event pairs, 195 based on Foata normal form. 16/1677 useless extension candidates. Maximal degree in co-relation 12607. Up to 1478 conditions per place. [2024-06-14 11:53:12,098 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 279 selfloop transitions, 31 changer transitions 19/331 dead transitions. [2024-06-14 11:53:12,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 331 transitions, 4118 flow [2024-06-14 11:53:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-14 11:53:12,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 11:53:12,100 INFO L175 Difference]: Start difference. First operand has 354 places, 309 transitions, 3358 flow. Second operand 12 states and 140 transitions. [2024-06-14 11:53:12,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 331 transitions, 4118 flow [2024-06-14 11:53:13,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 331 transitions, 3967 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 11:53:13,141 INFO L231 Difference]: Finished difference. Result has 358 places, 300 transitions, 3171 flow [2024-06-14 11:53:13,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3207, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3171, PETRI_PLACES=358, PETRI_TRANSITIONS=300} [2024-06-14 11:53:13,142 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-14 11:53:13,142 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 300 transitions, 3171 flow [2024-06-14 11:53:13,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:13,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:13,142 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 11:53:13,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 11:53:13,142 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:13,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:13,142 INFO L85 PathProgramCache]: Analyzing trace with hash 716943031, now seen corresponding path program 22 times [2024-06-14 11:53:13,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:13,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470273405] [2024-06-14 11:53:13,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:13,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:14,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470273405] [2024-06-14 11:53:14,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470273405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:14,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:14,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:14,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264913851] [2024-06-14 11:53:14,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:14,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:14,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:14,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 300 transitions, 3171 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 11:53:14,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:14,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:14,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:15,248 INFO L124 PetriNetUnfolderBase]: 824/1592 cut-off events. [2024-06-14 11:53:15,248 INFO L125 PetriNetUnfolderBase]: For 325067/325067 co-relation queries the response was YES. [2024-06-14 11:53:15,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12330 conditions, 1592 events. 824/1592 cut-off events. For 325067/325067 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9562 event pairs, 185 based on Foata normal form. 8/1599 useless extension candidates. Maximal degree in co-relation 12193. Up to 1463 conditions per place. [2024-06-14 11:53:15,266 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 276 selfloop transitions, 27 changer transitions 14/319 dead transitions. [2024-06-14 11:53:15,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 319 transitions, 3881 flow [2024-06-14 11:53:15,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:53:15,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 11:53:15,267 INFO L175 Difference]: Start difference. First operand has 358 places, 300 transitions, 3171 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:53:15,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 319 transitions, 3881 flow [2024-06-14 11:53:16,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 319 transitions, 3806 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-14 11:53:16,104 INFO L231 Difference]: Finished difference. Result has 350 places, 294 transitions, 3081 flow [2024-06-14 11:53:16,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3081, PETRI_PLACES=350, PETRI_TRANSITIONS=294} [2024-06-14 11:53:16,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-14 11:53:16,105 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 294 transitions, 3081 flow [2024-06-14 11:53:16,105 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 11:53:16,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:16,105 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 11:53:16,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 11:53:16,105 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:16,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1296705937, now seen corresponding path program 23 times [2024-06-14 11:53:16,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:16,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041244441] [2024-06-14 11:53:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:16,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:17,616 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 11:53:17,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:17,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041244441] [2024-06-14 11:53:17,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041244441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:17,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:17,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734431284] [2024-06-14 11:53:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:17,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:17,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:17,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:17,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:17,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 294 transitions, 3081 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:17,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:17,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:17,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:18,349 INFO L124 PetriNetUnfolderBase]: 823/1589 cut-off events. [2024-06-14 11:53:18,349 INFO L125 PetriNetUnfolderBase]: For 320032/320032 co-relation queries the response was YES. [2024-06-14 11:53:18,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12163 conditions, 1589 events. 823/1589 cut-off events. For 320032/320032 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9531 event pairs, 173 based on Foata normal form. 10/1598 useless extension candidates. Maximal degree in co-relation 12029. Up to 1358 conditions per place. [2024-06-14 11:53:18,366 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 55 changer transitions 13/320 dead transitions. [2024-06-14 11:53:18,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 320 transitions, 3851 flow [2024-06-14 11:53:18,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:18,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 11:53:18,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 11:53:18,367 INFO L175 Difference]: Start difference. First operand has 350 places, 294 transitions, 3081 flow. Second operand 12 states and 147 transitions. [2024-06-14 11:53:18,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 320 transitions, 3851 flow [2024-06-14 11:53:19,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 320 transitions, 3785 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:19,360 INFO L231 Difference]: Finished difference. Result has 346 places, 291 transitions, 3096 flow [2024-06-14 11:53:19,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3096, PETRI_PLACES=346, PETRI_TRANSITIONS=291} [2024-06-14 11:53:19,361 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-14 11:53:19,361 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 291 transitions, 3096 flow [2024-06-14 11:53:19,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:19,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:19,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:19,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 11:53:19,361 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:19,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1166267533, now seen corresponding path program 24 times [2024-06-14 11:53:19,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:19,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476617332] [2024-06-14 11:53:19,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:21,556 INFO 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 11:53:21,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:21,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476617332] [2024-06-14 11:53:21,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476617332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:21,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:21,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890679657] [2024-06-14 11:53:21,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:21,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:21,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:21,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:21,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:21,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:21,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 291 transitions, 3096 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:21,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:21,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:21,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:22,389 INFO L124 PetriNetUnfolderBase]: 812/1572 cut-off events. [2024-06-14 11:53:22,389 INFO L125 PetriNetUnfolderBase]: For 302907/302907 co-relation queries the response was YES. [2024-06-14 11:53:22,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12005 conditions, 1572 events. 812/1572 cut-off events. For 302907/302907 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9425 event pairs, 168 based on Foata normal form. 10/1581 useless extension candidates. Maximal degree in co-relation 11873. Up to 1329 conditions per place. [2024-06-14 11:53:22,405 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 245 selfloop transitions, 55 changer transitions 12/314 dead transitions. [2024-06-14 11:53:22,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 314 transitions, 3828 flow [2024-06-14 11:53:22,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:22,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:53:22,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 11:53:22,406 INFO L175 Difference]: Start difference. First operand has 346 places, 291 transitions, 3096 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:53:22,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 314 transitions, 3828 flow [2024-06-14 11:53:23,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 314 transitions, 3693 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 11:53:23,244 INFO L231 Difference]: Finished difference. Result has 342 places, 285 transitions, 3007 flow [2024-06-14 11:53:23,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2961, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3007, PETRI_PLACES=342, PETRI_TRANSITIONS=285} [2024-06-14 11:53:23,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-14 11:53:23,244 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 285 transitions, 3007 flow [2024-06-14 11:53:23,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:23,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:23,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:23,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 11:53:23,245 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:23,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:23,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1000026809, now seen corresponding path program 11 times [2024-06-14 11:53:23,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:23,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645837555] [2024-06-14 11:53:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:23,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:25,110 INFO 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 11:53:25,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645837555] [2024-06-14 11:53:25,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645837555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:25,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:25,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:25,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957049695] [2024-06-14 11:53:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:25,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:25,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:25,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:25,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 285 transitions, 3007 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:25,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:25,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:25,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:25,852 INFO L124 PetriNetUnfolderBase]: 780/1516 cut-off events. [2024-06-14 11:53:25,852 INFO L125 PetriNetUnfolderBase]: For 258685/258685 co-relation queries the response was YES. [2024-06-14 11:53:25,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11727 conditions, 1516 events. 780/1516 cut-off events. For 258685/258685 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9031 event pairs, 166 based on Foata normal form. 2/1517 useless extension candidates. Maximal degree in co-relation 11597. Up to 1337 conditions per place. [2024-06-14 11:53:25,869 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 247 selfloop transitions, 55 changer transitions 0/304 dead transitions. [2024-06-14 11:53:25,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 304 transitions, 3699 flow [2024-06-14 11:53:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:25,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:53:25,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:53:25,870 INFO L175 Difference]: Start difference. First operand has 342 places, 285 transitions, 3007 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:53:25,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 304 transitions, 3699 flow [2024-06-14 11:53:26,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 304 transitions, 3584 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:26,701 INFO L231 Difference]: Finished difference. Result has 339 places, 286 transitions, 3037 flow [2024-06-14 11:53:26,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2892, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3037, PETRI_PLACES=339, PETRI_TRANSITIONS=286} [2024-06-14 11:53:26,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 11:53:26,702 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 286 transitions, 3037 flow [2024-06-14 11:53:26,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:26,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:26,702 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 11:53:26,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 11:53:26,703 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:26,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:26,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1781050249, now seen corresponding path program 12 times [2024-06-14 11:53:26,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:26,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740596806] [2024-06-14 11:53:26,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:26,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:28,918 INFO 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 11:53:28,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740596806] [2024-06-14 11:53:28,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740596806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:28,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:28,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:28,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161086193] [2024-06-14 11:53:28,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:28,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:28,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:28,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:28,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:29,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:29,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 286 transitions, 3037 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:29,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:29,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:29,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:29,579 INFO L124 PetriNetUnfolderBase]: 784/1524 cut-off events. [2024-06-14 11:53:29,579 INFO L125 PetriNetUnfolderBase]: For 259227/259227 co-relation queries the response was YES. [2024-06-14 11:53:29,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11805 conditions, 1524 events. 784/1524 cut-off events. For 259227/259227 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9118 event pairs, 175 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 11675. Up to 1354 conditions per place. [2024-06-14 11:53:29,594 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 54 changer transitions 0/304 dead transitions. [2024-06-14 11:53:29,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 304 transitions, 3725 flow [2024-06-14 11:53:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 11:53:29,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:53:29,595 INFO L175 Difference]: Start difference. First operand has 339 places, 286 transitions, 3037 flow. Second operand 11 states and 132 transitions. [2024-06-14 11:53:29,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 304 transitions, 3725 flow [2024-06-14 11:53:30,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 304 transitions, 3562 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-14 11:53:30,354 INFO L231 Difference]: Finished difference. Result has 340 places, 287 transitions, 3019 flow [2024-06-14 11:53:30,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3019, PETRI_PLACES=340, PETRI_TRANSITIONS=287} [2024-06-14 11:53:30,354 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-14 11:53:30,354 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 287 transitions, 3019 flow [2024-06-14 11:53:30,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:30,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:30,354 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 11:53:30,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 11:53:30,355 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:30,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1774378925, now seen corresponding path program 25 times [2024-06-14 11:53:30,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:30,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647223825] [2024-06-14 11:53:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:30,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:31,798 INFO 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 11:53:31,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:31,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647223825] [2024-06-14 11:53:31,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647223825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:31,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:31,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:31,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925357434] [2024-06-14 11:53:31,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:31,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:31,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:31,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:31,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:31,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:31,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 287 transitions, 3019 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:31,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:31,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:31,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:32,663 INFO L124 PetriNetUnfolderBase]: 796/1552 cut-off events. [2024-06-14 11:53:32,663 INFO L125 PetriNetUnfolderBase]: For 297019/297019 co-relation queries the response was YES. [2024-06-14 11:53:32,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11892 conditions, 1552 events. 796/1552 cut-off events. For 297019/297019 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9318 event pairs, 163 based on Foata normal form. 8/1559 useless extension candidates. Maximal degree in co-relation 11761. Up to 1225 conditions per place. [2024-06-14 11:53:32,678 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 61 changer transitions 7/315 dead transitions. [2024-06-14 11:53:32,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 315 transitions, 4003 flow [2024-06-14 11:53:32,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:32,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 11:53:32,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 11:53:32,679 INFO L175 Difference]: Start difference. First operand has 340 places, 287 transitions, 3019 flow. Second operand 12 states and 152 transitions. [2024-06-14 11:53:32,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 315 transitions, 4003 flow [2024-06-14 11:53:33,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 315 transitions, 3870 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:53:33,394 INFO L231 Difference]: Finished difference. Result has 343 places, 285 transitions, 2995 flow [2024-06-14 11:53:33,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2995, PETRI_PLACES=343, PETRI_TRANSITIONS=285} [2024-06-14 11:53:33,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 11:53:33,394 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 285 transitions, 2995 flow [2024-06-14 11:53:33,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:33,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:33,395 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 11:53:33,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 11:53:33,395 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:33,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1170909163, now seen corresponding path program 26 times [2024-06-14 11:53:33,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:33,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458704330] [2024-06-14 11:53:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:33,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:34,885 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 11:53:34,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:34,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458704330] [2024-06-14 11:53:34,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458704330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:34,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:34,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935732130] [2024-06-14 11:53:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:34,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:34,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:34,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:34,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:35,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:35,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 285 transitions, 2995 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:35,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:35,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:35,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:35,624 INFO L124 PetriNetUnfolderBase]: 765/1491 cut-off events. [2024-06-14 11:53:35,625 INFO L125 PetriNetUnfolderBase]: For 256821/256821 co-relation queries the response was YES. [2024-06-14 11:53:35,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10599 conditions, 1491 events. 765/1491 cut-off events. For 256821/256821 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8904 event pairs, 164 based on Foata normal form. 10/1500 useless extension candidates. Maximal degree in co-relation 10467. Up to 1230 conditions per place. [2024-06-14 11:53:35,639 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 244 selfloop transitions, 50 changer transitions 10/306 dead transitions. [2024-06-14 11:53:35,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 306 transitions, 3703 flow [2024-06-14 11:53:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:35,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:53:35,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:53:35,640 INFO L175 Difference]: Start difference. First operand has 343 places, 285 transitions, 2995 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:53:35,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 306 transitions, 3703 flow [2024-06-14 11:53:36,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 306 transitions, 3595 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:53:36,238 INFO L231 Difference]: Finished difference. Result has 342 places, 279 transitions, 2933 flow [2024-06-14 11:53:36,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2933, PETRI_PLACES=342, PETRI_TRANSITIONS=279} [2024-06-14 11:53:36,239 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-14 11:53:36,239 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 279 transitions, 2933 flow [2024-06-14 11:53:36,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:36,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:36,239 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 11:53:36,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 11:53:36,239 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:36,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash -993531689, now seen corresponding path program 13 times [2024-06-14 11:53:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:36,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774388846] [2024-06-14 11:53:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:37,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:37,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774388846] [2024-06-14 11:53:37,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774388846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:37,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:37,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:37,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952151755] [2024-06-14 11:53:37,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:37,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:37,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:37,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:37,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:37,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:37,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 279 transitions, 2933 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:37,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:37,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:37,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:38,454 INFO L124 PetriNetUnfolderBase]: 770/1502 cut-off events. [2024-06-14 11:53:38,455 INFO L125 PetriNetUnfolderBase]: For 263769/263769 co-relation queries the response was YES. [2024-06-14 11:53:38,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11698 conditions, 1502 events. 770/1502 cut-off events. For 263769/263769 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8963 event pairs, 169 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 11567. Up to 1200 conditions per place. [2024-06-14 11:53:38,471 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 59 changer transitions 0/303 dead transitions. [2024-06-14 11:53:38,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 303 transitions, 3885 flow [2024-06-14 11:53:38,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:53:38,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 11:53:38,473 INFO L175 Difference]: Start difference. First operand has 342 places, 279 transitions, 2933 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:53:38,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 303 transitions, 3885 flow [2024-06-14 11:53:39,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 303 transitions, 3688 flow, removed 5 selfloop flow, removed 19 redundant places. [2024-06-14 11:53:39,249 INFO L231 Difference]: Finished difference. Result has 334 places, 280 transitions, 2894 flow [2024-06-14 11:53:39,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2740, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2894, PETRI_PLACES=334, PETRI_TRANSITIONS=280} [2024-06-14 11:53:39,250 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 11:53:39,250 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 280 transitions, 2894 flow [2024-06-14 11:53:39,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:39,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:39,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:39,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 11:53:39,250 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:39,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:39,251 INFO L85 PathProgramCache]: Analyzing trace with hash -993777643, now seen corresponding path program 27 times [2024-06-14 11:53:39,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:39,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104172911] [2024-06-14 11:53:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:39,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:40,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:40,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104172911] [2024-06-14 11:53:40,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104172911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:40,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:40,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981438808] [2024-06-14 11:53:40,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:40,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:40,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:40,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:41,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:41,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 280 transitions, 2894 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:41,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:41,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:41,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:41,663 INFO L124 PetriNetUnfolderBase]: 786/1538 cut-off events. [2024-06-14 11:53:41,663 INFO L125 PetriNetUnfolderBase]: For 308727/308727 co-relation queries the response was YES. [2024-06-14 11:53:41,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11765 conditions, 1538 events. 786/1538 cut-off events. For 308727/308727 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9252 event pairs, 175 based on Foata normal form. 10/1547 useless extension candidates. Maximal degree in co-relation 11635. Up to 1291 conditions per place. [2024-06-14 11:53:41,679 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 240 selfloop transitions, 51 changer transitions 8/301 dead transitions. [2024-06-14 11:53:41,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 301 transitions, 3592 flow [2024-06-14 11:53:41,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:53:41,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:53:41,680 INFO L175 Difference]: Start difference. First operand has 334 places, 280 transitions, 2894 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:53:41,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 301 transitions, 3592 flow [2024-06-14 11:53:42,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 301 transitions, 3448 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:53:42,396 INFO L231 Difference]: Finished difference. Result has 336 places, 276 transitions, 2816 flow [2024-06-14 11:53:42,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2750, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2816, PETRI_PLACES=336, PETRI_TRANSITIONS=276} [2024-06-14 11:53:42,397 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 11:53:42,397 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 276 transitions, 2816 flow [2024-06-14 11:53:42,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:42,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:42,397 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 11:53:42,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 11:53:42,397 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:42,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:42,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1000033753, now seen corresponding path program 28 times [2024-06-14 11:53:42,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:42,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555563993] [2024-06-14 11:53:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:42,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:45,556 INFO 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 11:53:45,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:45,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555563993] [2024-06-14 11:53:45,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555563993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:45,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:45,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977049574] [2024-06-14 11:53:45,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:45,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:45,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:45,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 276 transitions, 2816 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:45,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:45,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:45,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:46,489 INFO L124 PetriNetUnfolderBase]: 743/1461 cut-off events. [2024-06-14 11:53:46,489 INFO L125 PetriNetUnfolderBase]: For 256301/256301 co-relation queries the response was YES. [2024-06-14 11:53:46,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10306 conditions, 1461 events. 743/1461 cut-off events. For 256301/256301 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8770 event pairs, 149 based on Foata normal form. 10/1470 useless extension candidates. Maximal degree in co-relation 10175. Up to 1236 conditions per place. [2024-06-14 11:53:46,504 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 238 selfloop transitions, 48 changer transitions 12/300 dead transitions. [2024-06-14 11:53:46,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 300 transitions, 3526 flow [2024-06-14 11:53:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 11:53:46,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 11:53:46,505 INFO L175 Difference]: Start difference. First operand has 336 places, 276 transitions, 2816 flow. Second operand 12 states and 146 transitions. [2024-06-14 11:53:46,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 300 transitions, 3526 flow [2024-06-14 11:53:47,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 300 transitions, 3417 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:47,003 INFO L231 Difference]: Finished difference. Result has 335 places, 272 transitions, 2762 flow [2024-06-14 11:53:47,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2707, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2762, PETRI_PLACES=335, PETRI_TRANSITIONS=272} [2024-06-14 11:53:47,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-14 11:53:47,004 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 272 transitions, 2762 flow [2024-06-14 11:53:47,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:47,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:47,004 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 11:53:47,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 11:53:47,004 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:47,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1000206733, now seen corresponding path program 29 times [2024-06-14 11:53:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:47,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770485262] [2024-06-14 11:53:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:47,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:48,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:48,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770485262] [2024-06-14 11:53:48,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770485262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:48,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:48,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:48,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758616529] [2024-06-14 11:53:48,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:48,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:48,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:48,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:48,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:48,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 272 transitions, 2762 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 11:53:48,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:48,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:48,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:48,887 INFO L124 PetriNetUnfolderBase]: 700/1384 cut-off events. [2024-06-14 11:53:48,887 INFO L125 PetriNetUnfolderBase]: For 195234/195234 co-relation queries the response was YES. [2024-06-14 11:53:48,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8841 conditions, 1384 events. 700/1384 cut-off events. For 195234/195234 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8255 event pairs, 143 based on Foata normal form. 10/1393 useless extension candidates. Maximal degree in co-relation 8711. Up to 1161 conditions per place. [2024-06-14 11:53:48,902 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 44 changer transitions 9/294 dead transitions. [2024-06-14 11:53:48,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 294 transitions, 3452 flow [2024-06-14 11:53:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:53:48,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:53:48,903 INFO L175 Difference]: Start difference. First operand has 335 places, 272 transitions, 2762 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:53:48,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 294 transitions, 3452 flow [2024-06-14 11:53:49,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 294 transitions, 3352 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:49,475 INFO L231 Difference]: Finished difference. Result has 332 places, 267 transitions, 2710 flow [2024-06-14 11:53:49,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2710, PETRI_PLACES=332, PETRI_TRANSITIONS=267} [2024-06-14 11:53:49,476 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-14 11:53:49,476 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 267 transitions, 2710 flow [2024-06-14 11:53:49,476 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 11:53:49,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:49,476 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 11:53:49,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 11:53:49,476 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:49,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:49,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1885460183, now seen corresponding path program 14 times [2024-06-14 11:53:49,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:49,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729475742] [2024-06-14 11:53:49,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:49,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:50,638 INFO 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 11:53:50,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:50,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729475742] [2024-06-14 11:53:50,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729475742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:50,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:50,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:50,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384432577] [2024-06-14 11:53:50,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:50,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:50,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:50,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 267 transitions, 2710 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:50,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:50,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:50,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:51,231 INFO L124 PetriNetUnfolderBase]: 685/1359 cut-off events. [2024-06-14 11:53:51,231 INFO L125 PetriNetUnfolderBase]: For 178810/178810 co-relation queries the response was YES. [2024-06-14 11:53:51,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8712 conditions, 1359 events. 685/1359 cut-off events. For 178810/178810 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8056 event pairs, 178 based on Foata normal form. 8/1366 useless extension candidates. Maximal degree in co-relation 8583. Up to 1281 conditions per place. [2024-06-14 11:53:51,245 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 256 selfloop transitions, 11 changer transitions 15/284 dead transitions. [2024-06-14 11:53:51,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 284 transitions, 3352 flow [2024-06-14 11:53:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 11:53:51,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-14 11:53:51,246 INFO L175 Difference]: Start difference. First operand has 332 places, 267 transitions, 2710 flow. Second operand 11 states and 117 transitions. [2024-06-14 11:53:51,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 284 transitions, 3352 flow [2024-06-14 11:53:51,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 284 transitions, 3255 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:51,795 INFO L231 Difference]: Finished difference. Result has 327 places, 263 transitions, 2619 flow [2024-06-14 11:53:51,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2619, PETRI_PLACES=327, PETRI_TRANSITIONS=263} [2024-06-14 11:53:51,795 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-14 11:53:51,795 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 263 transitions, 2619 flow [2024-06-14 11:53:51,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:51,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:51,796 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 11:53:51,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 11:53:51,796 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:51,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1749740881, now seen corresponding path program 15 times [2024-06-14 11:53:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:51,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550109080] [2024-06-14 11:53:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:51,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:53,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:53,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550109080] [2024-06-14 11:53:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550109080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666905786] [2024-06-14 11:53:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:53,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:53,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:53,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 263 transitions, 2619 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:53,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:53,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:53,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:53,755 INFO L124 PetriNetUnfolderBase]: 679/1349 cut-off events. [2024-06-14 11:53:53,755 INFO L125 PetriNetUnfolderBase]: For 203005/203005 co-relation queries the response was YES. [2024-06-14 11:53:53,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 1349 events. 679/1349 cut-off events. For 203005/203005 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7980 event pairs, 182 based on Foata normal form. 12/1360 useless extension candidates. Maximal degree in co-relation 8513. Up to 1225 conditions per place. [2024-06-14 11:53:53,768 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 244 selfloop transitions, 17 changer transitions 19/282 dead transitions. [2024-06-14 11:53:53,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 282 transitions, 3299 flow [2024-06-14 11:53:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:53,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:53,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:53:53,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 11:53:53,769 INFO L175 Difference]: Start difference. First operand has 327 places, 263 transitions, 2619 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:53:53,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 282 transitions, 3299 flow [2024-06-14 11:53:54,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 282 transitions, 3269 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:53:54,299 INFO L231 Difference]: Finished difference. Result has 321 places, 253 transitions, 2529 flow [2024-06-14 11:53:54,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2589, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2529, PETRI_PLACES=321, PETRI_TRANSITIONS=253} [2024-06-14 11:53:54,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-14 11:53:54,300 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 253 transitions, 2529 flow [2024-06-14 11:53:54,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:54,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:54,300 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 11:53:54,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 11:53:54,300 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:54,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2133441095, now seen corresponding path program 16 times [2024-06-14 11:53:54,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:54,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288833907] [2024-06-14 11:53:54,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:54,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:56,056 INFO 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 11:53:56,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:56,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288833907] [2024-06-14 11:53:56,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288833907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:56,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:56,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:56,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173383680] [2024-06-14 11:53:56,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:56,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:56,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:56,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:56,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 253 transitions, 2529 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:56,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:56,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:56,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:56,677 INFO L124 PetriNetUnfolderBase]: 639/1277 cut-off events. [2024-06-14 11:53:56,677 INFO L125 PetriNetUnfolderBase]: For 139508/139508 co-relation queries the response was YES. [2024-06-14 11:53:56,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8255 conditions, 1277 events. 639/1277 cut-off events. For 139508/139508 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7505 event pairs, 172 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 8129. Up to 1198 conditions per place. [2024-06-14 11:53:56,690 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 27 changer transitions 0/271 dead transitions. [2024-06-14 11:53:56,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 271 transitions, 3155 flow [2024-06-14 11:53:56,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:56,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:53:56,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 11:53:56,691 INFO L175 Difference]: Start difference. First operand has 321 places, 253 transitions, 2529 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:53:56,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 271 transitions, 3155 flow [2024-06-14 11:53:57,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 271 transitions, 2981 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-14 11:53:57,293 INFO L231 Difference]: Finished difference. Result has 315 places, 254 transitions, 2447 flow [2024-06-14 11:53:57,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2447, PETRI_PLACES=315, PETRI_TRANSITIONS=254} [2024-06-14 11:53:57,294 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-14 11:53:57,294 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 254 transitions, 2447 flow [2024-06-14 11:53:57,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:57,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:57,294 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 11:53:57,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 11:53:57,294 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:57,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1472692951, now seen corresponding path program 17 times [2024-06-14 11:53:57,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:57,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929549551] [2024-06-14 11:53:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:57,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:58,953 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 11:53:58,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:58,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929549551] [2024-06-14 11:53:58,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929549551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:58,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:58,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:58,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896899843] [2024-06-14 11:53:58,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:58,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:59,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:53:59,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 254 transitions, 2447 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:59,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:59,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:53:59,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:59,573 INFO L124 PetriNetUnfolderBase]: 643/1285 cut-off events. [2024-06-14 11:53:59,573 INFO L125 PetriNetUnfolderBase]: For 139493/139493 co-relation queries the response was YES. [2024-06-14 11:53:59,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8237 conditions, 1285 events. 643/1285 cut-off events. For 139493/139493 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7588 event pairs, 178 based on Foata normal form. 2/1286 useless extension candidates. Maximal degree in co-relation 8113. Up to 1225 conditions per place. [2024-06-14 11:53:59,585 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 19 changer transitions 0/269 dead transitions. [2024-06-14 11:53:59,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 269 transitions, 3053 flow [2024-06-14 11:53:59,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:59,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:59,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 11:53:59,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-14 11:53:59,586 INFO L175 Difference]: Start difference. First operand has 315 places, 254 transitions, 2447 flow. Second operand 11 states and 115 transitions. [2024-06-14 11:53:59,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 269 transitions, 3053 flow [2024-06-14 11:54:00,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 269 transitions, 2968 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:00,150 INFO L231 Difference]: Finished difference. Result has 317 places, 255 transitions, 2440 flow [2024-06-14 11:54:00,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2362, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2440, PETRI_PLACES=317, PETRI_TRANSITIONS=255} [2024-06-14 11:54:00,150 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2024-06-14 11:54:00,150 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 255 transitions, 2440 flow [2024-06-14 11:54:00,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:00,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:00,150 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 11:54:00,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 11:54:00,150 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:00,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:00,151 INFO L85 PathProgramCache]: Analyzing trace with hash -414469499, now seen corresponding path program 30 times [2024-06-14 11:54:00,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:00,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172919086] [2024-06-14 11:54:00,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:00,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:01,631 INFO 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 11:54:01,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:01,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172919086] [2024-06-14 11:54:01,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172919086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:01,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:01,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:01,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554966955] [2024-06-14 11:54:01,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:01,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:01,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:01,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:01,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:01,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:01,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 255 transitions, 2440 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:01,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:01,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:01,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:02,328 INFO L124 PetriNetUnfolderBase]: 668/1336 cut-off events. [2024-06-14 11:54:02,329 INFO L125 PetriNetUnfolderBase]: For 184244/184244 co-relation queries the response was YES. [2024-06-14 11:54:02,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1336 events. 668/1336 cut-off events. For 184244/184244 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7927 event pairs, 148 based on Foata normal form. 10/1345 useless extension candidates. Maximal degree in co-relation 8273. Up to 1002 conditions per place. [2024-06-14 11:54:02,341 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 185 selfloop transitions, 83 changer transitions 11/281 dead transitions. [2024-06-14 11:54:02,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 281 transitions, 3134 flow [2024-06-14 11:54:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:54:02,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:54:02,342 INFO L175 Difference]: Start difference. First operand has 317 places, 255 transitions, 2440 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:54:02,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 281 transitions, 3134 flow [2024-06-14 11:54:02,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 281 transitions, 3066 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:02,877 INFO L231 Difference]: Finished difference. Result has 321 places, 256 transitions, 2553 flow [2024-06-14 11:54:02,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2553, PETRI_PLACES=321, PETRI_TRANSITIONS=256} [2024-06-14 11:54:02,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-14 11:54:02,878 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 256 transitions, 2553 flow [2024-06-14 11:54:02,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:02,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:02,878 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 11:54:02,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 11:54:02,878 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:02,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1925350841, now seen corresponding path program 18 times [2024-06-14 11:54:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64637632] [2024-06-14 11:54:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:04,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:04,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64637632] [2024-06-14 11:54:04,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64637632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:04,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:04,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:04,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196430610] [2024-06-14 11:54:04,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:04,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:04,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:04,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:04,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:04,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:04,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 256 transitions, 2553 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:04,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:04,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:04,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:05,340 INFO L124 PetriNetUnfolderBase]: 648/1296 cut-off events. [2024-06-14 11:54:05,340 INFO L125 PetriNetUnfolderBase]: For 144747/144747 co-relation queries the response was YES. [2024-06-14 11:54:05,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8444 conditions, 1296 events. 648/1296 cut-off events. For 144747/144747 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7677 event pairs, 174 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 8317. Up to 1232 conditions per place. [2024-06-14 11:54:05,353 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 248 selfloop transitions, 22 changer transitions 1/273 dead transitions. [2024-06-14 11:54:05,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 273 transitions, 3190 flow [2024-06-14 11:54:05,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:05,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:54:05,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:54:05,354 INFO L175 Difference]: Start difference. First operand has 321 places, 256 transitions, 2553 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:54:05,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 273 transitions, 3190 flow [2024-06-14 11:54:05,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 273 transitions, 3090 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 11:54:05,937 INFO L231 Difference]: Finished difference. Result has 324 places, 257 transitions, 2545 flow [2024-06-14 11:54:05,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2545, PETRI_PLACES=324, PETRI_TRANSITIONS=257} [2024-06-14 11:54:05,937 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-14 11:54:05,937 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 257 transitions, 2545 flow [2024-06-14 11:54:05,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:05,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:05,937 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 11:54:05,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 11:54:05,938 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:05,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1925342471, now seen corresponding path program 19 times [2024-06-14 11:54:05,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006520920] [2024-06-14 11:54:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:07,260 INFO 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 11:54:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:07,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006520920] [2024-06-14 11:54:07,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006520920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:07,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:07,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:07,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790373716] [2024-06-14 11:54:07,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:07,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:07,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:07,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:07,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:07,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 257 transitions, 2545 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:07,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:07,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:07,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:07,933 INFO L124 PetriNetUnfolderBase]: 632/1264 cut-off events. [2024-06-14 11:54:07,933 INFO L125 PetriNetUnfolderBase]: For 144960/144960 co-relation queries the response was YES. [2024-06-14 11:54:07,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8257 conditions, 1264 events. 632/1264 cut-off events. For 144960/144960 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7444 event pairs, 174 based on Foata normal form. 2/1265 useless extension candidates. Maximal degree in co-relation 8129. Up to 1193 conditions per place. [2024-06-14 11:54:07,946 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 250 selfloop transitions, 20 changer transitions 0/272 dead transitions. [2024-06-14 11:54:07,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 272 transitions, 3159 flow [2024-06-14 11:54:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 11:54:07,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-14 11:54:07,947 INFO L175 Difference]: Start difference. First operand has 324 places, 257 transitions, 2545 flow. Second operand 11 states and 118 transitions. [2024-06-14 11:54:07,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 272 transitions, 3159 flow [2024-06-14 11:54:08,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 272 transitions, 3085 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:54:08,572 INFO L231 Difference]: Finished difference. Result has 327 places, 258 transitions, 2555 flow [2024-06-14 11:54:08,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2555, PETRI_PLACES=327, PETRI_TRANSITIONS=258} [2024-06-14 11:54:08,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-14 11:54:08,572 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 258 transitions, 2555 flow [2024-06-14 11:54:08,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:08,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:08,573 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 11:54:08,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 11:54:08,573 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:08,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:08,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1687244507, now seen corresponding path program 20 times [2024-06-14 11:54:08,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:08,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743552564] [2024-06-14 11:54:08,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:08,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:09,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:09,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743552564] [2024-06-14 11:54:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743552564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:09,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177971934] [2024-06-14 11:54:09,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:09,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:09,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:09,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:09,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:09,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:09,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 258 transitions, 2555 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:09,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:09,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:09,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:10,320 INFO L124 PetriNetUnfolderBase]: 636/1272 cut-off events. [2024-06-14 11:54:10,320 INFO L125 PetriNetUnfolderBase]: For 147962/147962 co-relation queries the response was YES. [2024-06-14 11:54:10,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8316 conditions, 1272 events. 636/1272 cut-off events. For 147962/147962 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7537 event pairs, 170 based on Foata normal form. 2/1273 useless extension candidates. Maximal degree in co-relation 8187. Up to 1215 conditions per place. [2024-06-14 11:54:10,332 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 253 selfloop transitions, 18 changer transitions 0/273 dead transitions. [2024-06-14 11:54:10,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 273 transitions, 3171 flow [2024-06-14 11:54:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-14 11:54:10,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-14 11:54:10,333 INFO L175 Difference]: Start difference. First operand has 327 places, 258 transitions, 2555 flow. Second operand 11 states and 115 transitions. [2024-06-14 11:54:10,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 273 transitions, 3171 flow [2024-06-14 11:54:10,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 273 transitions, 3097 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:10,956 INFO L231 Difference]: Finished difference. Result has 329 places, 259 transitions, 2563 flow [2024-06-14 11:54:10,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2563, PETRI_PLACES=329, PETRI_TRANSITIONS=259} [2024-06-14 11:54:10,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-14 11:54:10,957 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 259 transitions, 2563 flow [2024-06-14 11:54:10,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:10,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:10,957 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 11:54:10,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 11:54:10,957 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:10,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:10,957 INFO L85 PathProgramCache]: Analyzing trace with hash 822747533, now seen corresponding path program 31 times [2024-06-14 11:54:10,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:10,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361261921] [2024-06-14 11:54:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:10,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:12,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:12,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:12,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361261921] [2024-06-14 11:54:12,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361261921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:12,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:12,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:12,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070257785] [2024-06-14 11:54:12,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:12,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:12,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:12,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:12,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:12,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:12,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 259 transitions, 2563 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:12,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:12,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:12,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:13,006 INFO L124 PetriNetUnfolderBase]: 652/1308 cut-off events. [2024-06-14 11:54:13,006 INFO L125 PetriNetUnfolderBase]: For 183565/183565 co-relation queries the response was YES. [2024-06-14 11:54:13,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8407 conditions, 1308 events. 652/1308 cut-off events. For 183565/183565 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7789 event pairs, 144 based on Foata normal form. 8/1315 useless extension candidates. Maximal degree in co-relation 8277. Up to 966 conditions per place. [2024-06-14 11:54:13,019 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 88 changer transitions 11/281 dead transitions. [2024-06-14 11:54:13,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 281 transitions, 3213 flow [2024-06-14 11:54:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 11:54:13,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:54:13,020 INFO L175 Difference]: Start difference. First operand has 329 places, 259 transitions, 2563 flow. Second operand 12 states and 138 transitions. [2024-06-14 11:54:13,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 281 transitions, 3213 flow [2024-06-14 11:54:13,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 281 transitions, 3141 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:13,664 INFO L231 Difference]: Finished difference. Result has 333 places, 257 transitions, 2652 flow [2024-06-14 11:54:13,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2652, PETRI_PLACES=333, PETRI_TRANSITIONS=257} [2024-06-14 11:54:13,665 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 302 predicate places. [2024-06-14 11:54:13,665 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 257 transitions, 2652 flow [2024-06-14 11:54:13,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:13,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:13,665 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 11:54:13,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 11:54:13,666 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:13,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash -414589469, now seen corresponding path program 32 times [2024-06-14 11:54:13,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:13,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785808795] [2024-06-14 11:54:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:13,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:15,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:15,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785808795] [2024-06-14 11:54:15,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785808795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:15,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:15,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:15,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811219554] [2024-06-14 11:54:15,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:15,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:15,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:15,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:15,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:15,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:15,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 257 transitions, 2652 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:15,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:15,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:15,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:16,040 INFO L124 PetriNetUnfolderBase]: 660/1328 cut-off events. [2024-06-14 11:54:16,040 INFO L125 PetriNetUnfolderBase]: For 220486/220486 co-relation queries the response was YES. [2024-06-14 11:54:16,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9265 conditions, 1328 events. 660/1328 cut-off events. For 220486/220486 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7893 event pairs, 151 based on Foata normal form. 8/1335 useless extension candidates. Maximal degree in co-relation 9133. Up to 810 conditions per place. [2024-06-14 11:54:16,050 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 79 changer transitions 11/283 dead transitions. [2024-06-14 11:54:16,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 283 transitions, 3544 flow [2024-06-14 11:54:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 11:54:16,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:54:16,051 INFO L175 Difference]: Start difference. First operand has 333 places, 257 transitions, 2652 flow. Second operand 12 states and 144 transitions. [2024-06-14 11:54:16,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 283 transitions, 3544 flow [2024-06-14 11:54:16,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 283 transitions, 3360 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:54:16,618 INFO L231 Difference]: Finished difference. Result has 330 places, 253 transitions, 2599 flow [2024-06-14 11:54:16,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2599, PETRI_PLACES=330, PETRI_TRANSITIONS=253} [2024-06-14 11:54:16,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-14 11:54:16,619 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 253 transitions, 2599 flow [2024-06-14 11:54:16,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:16,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:16,619 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 11:54:16,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 11:54:16,620 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:16,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash -37442061, now seen corresponding path program 21 times [2024-06-14 11:54:16,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:16,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992872633] [2024-06-14 11:54:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:16,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:18,122 INFO 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 11:54:18,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:18,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992872633] [2024-06-14 11:54:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992872633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:18,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772569181] [2024-06-14 11:54:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:18,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:18,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:18,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:18,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:18,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 253 transitions, 2599 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:18,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:18,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:18,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:18,731 INFO L124 PetriNetUnfolderBase]: 641/1287 cut-off events. [2024-06-14 11:54:18,731 INFO L125 PetriNetUnfolderBase]: For 187188/187188 co-relation queries the response was YES. [2024-06-14 11:54:18,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9151 conditions, 1287 events. 641/1287 cut-off events. For 187188/187188 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7600 event pairs, 183 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 9021. Up to 1238 conditions per place. [2024-06-14 11:54:18,743 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 250 selfloop transitions, 16 changer transitions 0/268 dead transitions. [2024-06-14 11:54:18,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 268 transitions, 3207 flow [2024-06-14 11:54:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 11:54:18,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-14 11:54:18,744 INFO L175 Difference]: Start difference. First operand has 330 places, 253 transitions, 2599 flow. Second operand 11 states and 116 transitions. [2024-06-14 11:54:18,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 268 transitions, 3207 flow [2024-06-14 11:54:19,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 268 transitions, 3069 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:54:19,341 INFO L231 Difference]: Finished difference. Result has 325 places, 254 transitions, 2541 flow [2024-06-14 11:54:19,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2541, PETRI_PLACES=325, PETRI_TRANSITIONS=254} [2024-06-14 11:54:19,341 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-14 11:54:19,341 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 254 transitions, 2541 flow [2024-06-14 11:54:19,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:19,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:19,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:19,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 11:54:19,342 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:19,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash 963300647, now seen corresponding path program 33 times [2024-06-14 11:54:19,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043146239] [2024-06-14 11:54:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:20,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:20,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043146239] [2024-06-14 11:54:20,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043146239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:20,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:20,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:20,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543572479] [2024-06-14 11:54:20,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:20,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:21,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:21,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 254 transitions, 2541 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:21,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:21,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:21,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:21,743 INFO L124 PetriNetUnfolderBase]: 665/1343 cut-off events. [2024-06-14 11:54:21,743 INFO L125 PetriNetUnfolderBase]: For 257180/257180 co-relation queries the response was YES. [2024-06-14 11:54:21,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9209 conditions, 1343 events. 665/1343 cut-off events. For 257180/257180 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8028 event pairs, 189 based on Foata normal form. 16/1358 useless extension candidates. Maximal degree in co-relation 9081. Up to 1190 conditions per place. [2024-06-14 11:54:21,753 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 23 changer transitions 16/277 dead transitions. [2024-06-14 11:54:21,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 277 transitions, 3201 flow [2024-06-14 11:54:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:21,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 11:54:21,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:54:21,754 INFO L175 Difference]: Start difference. First operand has 325 places, 254 transitions, 2541 flow. Second operand 12 states and 136 transitions. [2024-06-14 11:54:21,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 277 transitions, 3201 flow [2024-06-14 11:54:22,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 277 transitions, 3131 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:22,500 INFO L231 Difference]: Finished difference. Result has 328 places, 248 transitions, 2464 flow [2024-06-14 11:54:22,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2464, PETRI_PLACES=328, PETRI_TRANSITIONS=248} [2024-06-14 11:54:22,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-14 11:54:22,501 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 248 transitions, 2464 flow [2024-06-14 11:54:22,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:22,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:22,501 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 11:54:22,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 11:54:22,501 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:22,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash -409820925, now seen corresponding path program 22 times [2024-06-14 11:54:22,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:22,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734259313] [2024-06-14 11:54:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:22,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:24,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:24,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734259313] [2024-06-14 11:54:24,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734259313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:24,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:24,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:24,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257597890] [2024-06-14 11:54:24,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:24,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:24,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:24,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:24,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:24,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:24,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 248 transitions, 2464 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:24,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:24,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:24,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:24,769 INFO L124 PetriNetUnfolderBase]: 627/1265 cut-off events. [2024-06-14 11:54:24,770 INFO L125 PetriNetUnfolderBase]: For 183665/183665 co-relation queries the response was YES. [2024-06-14 11:54:24,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8930 conditions, 1265 events. 627/1265 cut-off events. For 183665/183665 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7460 event pairs, 157 based on Foata normal form. 2/1266 useless extension candidates. Maximal degree in co-relation 8801. Up to 1093 conditions per place. [2024-06-14 11:54:24,780 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 54 changer transitions 0/265 dead transitions. [2024-06-14 11:54:24,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 265 transitions, 3086 flow [2024-06-14 11:54:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:24,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:54:24,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 11:54:24,781 INFO L175 Difference]: Start difference. First operand has 328 places, 248 transitions, 2464 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:54:24,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 265 transitions, 3086 flow [2024-06-14 11:54:25,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 265 transitions, 3030 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 11:54:25,467 INFO L231 Difference]: Finished difference. Result has 322 places, 249 transitions, 2566 flow [2024-06-14 11:54:25,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2566, PETRI_PLACES=322, PETRI_TRANSITIONS=249} [2024-06-14 11:54:25,467 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-14 11:54:25,468 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 249 transitions, 2566 flow [2024-06-14 11:54:25,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:25,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:25,468 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 11:54:25,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 11:54:25,468 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:25,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash 969794341, now seen corresponding path program 23 times [2024-06-14 11:54:25,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:25,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481222984] [2024-06-14 11:54:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:25,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:25,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:26,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:26,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481222984] [2024-06-14 11:54:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481222984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:26,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:26,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940260791] [2024-06-14 11:54:26,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:27,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:27,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:27,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:27,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:27,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:27,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 249 transitions, 2566 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:27,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:27,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:27,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:27,705 INFO L124 PetriNetUnfolderBase]: 631/1273 cut-off events. [2024-06-14 11:54:27,706 INFO L125 PetriNetUnfolderBase]: For 177943/177943 co-relation queries the response was YES. [2024-06-14 11:54:27,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9056 conditions, 1273 events. 631/1273 cut-off events. For 177943/177943 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7538 event pairs, 183 based on Foata normal form. 2/1274 useless extension candidates. Maximal degree in co-relation 8929. Up to 1183 conditions per place. [2024-06-14 11:54:27,718 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 28 changer transitions 0/266 dead transitions. [2024-06-14 11:54:27,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 266 transitions, 3190 flow [2024-06-14 11:54:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 11:54:27,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-14 11:54:27,719 INFO L175 Difference]: Start difference. First operand has 322 places, 249 transitions, 2566 flow. Second operand 11 states and 124 transitions. [2024-06-14 11:54:27,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 266 transitions, 3190 flow [2024-06-14 11:54:28,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 266 transitions, 3001 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-14 11:54:28,417 INFO L231 Difference]: Finished difference. Result has 322 places, 250 transitions, 2483 flow [2024-06-14 11:54:28,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2483, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2024-06-14 11:54:28,417 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-14 11:54:28,417 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 2483 flow [2024-06-14 11:54:28,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:28,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:28,417 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 11:54:28,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 11:54:28,418 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:28,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2133256521, now seen corresponding path program 34 times [2024-06-14 11:54:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:28,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947168124] [2024-06-14 11:54:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:29,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:29,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947168124] [2024-06-14 11:54:29,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947168124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:29,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:29,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:29,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002562919] [2024-06-14 11:54:29,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:29,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:29,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:29,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:29,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:29,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:29,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 2483 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:29,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:29,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:29,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:30,563 INFO L124 PetriNetUnfolderBase]: 672/1360 cut-off events. [2024-06-14 11:54:30,563 INFO L125 PetriNetUnfolderBase]: For 268260/268260 co-relation queries the response was YES. [2024-06-14 11:54:30,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10303 conditions, 1360 events. 672/1360 cut-off events. For 268260/268260 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 8127 event pairs, 192 based on Foata normal form. 8/1367 useless extension candidates. Maximal degree in co-relation 10175. Up to 1167 conditions per place. [2024-06-14 11:54:30,577 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 27 changer transitions 7/277 dead transitions. [2024-06-14 11:54:30,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 277 transitions, 3385 flow [2024-06-14 11:54:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 11:54:30,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:54:30,578 INFO L175 Difference]: Start difference. First operand has 322 places, 250 transitions, 2483 flow. Second operand 12 states and 138 transitions. [2024-06-14 11:54:30,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 277 transitions, 3385 flow [2024-06-14 11:54:31,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 277 transitions, 3289 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:31,531 INFO L231 Difference]: Finished difference. Result has 325 places, 248 transitions, 2428 flow [2024-06-14 11:54:31,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2428, PETRI_PLACES=325, PETRI_TRANSITIONS=248} [2024-06-14 11:54:31,531 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-14 11:54:31,531 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 248 transitions, 2428 flow [2024-06-14 11:54:31,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:31,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:31,531 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 11:54:31,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 11:54:31,531 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash -409827869, now seen corresponding path program 35 times [2024-06-14 11:54:31,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:31,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469271480] [2024-06-14 11:54:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:31,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:33,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:33,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469271480] [2024-06-14 11:54:33,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469271480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:33,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:33,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:33,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685311119] [2024-06-14 11:54:33,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:33,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:33,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:33,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:33,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:33,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 248 transitions, 2428 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:33,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:33,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:33,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:33,952 INFO L124 PetriNetUnfolderBase]: 670/1358 cut-off events. [2024-06-14 11:54:33,953 INFO L125 PetriNetUnfolderBase]: For 284075/284075 co-relation queries the response was YES. [2024-06-14 11:54:33,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10268 conditions, 1358 events. 670/1358 cut-off events. For 284075/284075 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8159 event pairs, 182 based on Foata normal form. 10/1367 useless extension candidates. Maximal degree in co-relation 10139. Up to 1046 conditions per place. [2024-06-14 11:54:33,964 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 63 changer transitions 12/270 dead transitions. [2024-06-14 11:54:33,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 270 transitions, 3070 flow [2024-06-14 11:54:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:33,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 11:54:33,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 11:54:33,965 INFO L175 Difference]: Start difference. First operand has 325 places, 248 transitions, 2428 flow. Second operand 12 states and 143 transitions. [2024-06-14 11:54:33,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 270 transitions, 3070 flow [2024-06-14 11:54:34,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 270 transitions, 3016 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:54:34,728 INFO L231 Difference]: Finished difference. Result has 324 places, 242 transitions, 2454 flow [2024-06-14 11:54:34,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2454, PETRI_PLACES=324, PETRI_TRANSITIONS=242} [2024-06-14 11:54:34,729 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-14 11:54:34,729 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 242 transitions, 2454 flow [2024-06-14 11:54:34,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:34,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:34,729 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 11:54:34,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 11:54:34,729 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:34,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash -410005499, now seen corresponding path program 36 times [2024-06-14 11:54:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:34,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993553982] [2024-06-14 11:54:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:36,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:36,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993553982] [2024-06-14 11:54:36,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993553982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:36,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:36,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918120653] [2024-06-14 11:54:36,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:36,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:36,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:36,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 242 transitions, 2454 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:36,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:36,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:36,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:36,886 INFO L124 PetriNetUnfolderBase]: 648/1324 cut-off events. [2024-06-14 11:54:36,886 INFO L125 PetriNetUnfolderBase]: For 267570/267570 co-relation queries the response was YES. [2024-06-14 11:54:36,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10169 conditions, 1324 events. 648/1324 cut-off events. For 267570/267570 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7984 event pairs, 176 based on Foata normal form. 8/1331 useless extension candidates. Maximal degree in co-relation 10041. Up to 1091 conditions per place. [2024-06-14 11:54:36,897 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 57 changer transitions 11/263 dead transitions. [2024-06-14 11:54:36,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 263 transitions, 3064 flow [2024-06-14 11:54:36,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:36,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 11:54:36,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-14 11:54:36,898 INFO L175 Difference]: Start difference. First operand has 324 places, 242 transitions, 2454 flow. Second operand 12 states and 137 transitions. [2024-06-14 11:54:36,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 263 transitions, 3064 flow [2024-06-14 11:54:37,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 263 transitions, 2930 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-14 11:54:37,762 INFO L231 Difference]: Finished difference. Result has 321 places, 239 transitions, 2411 flow [2024-06-14 11:54:37,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2411, PETRI_PLACES=321, PETRI_TRANSITIONS=239} [2024-06-14 11:54:37,762 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-14 11:54:37,762 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 239 transitions, 2411 flow [2024-06-14 11:54:37,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:37,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:37,763 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 11:54:37,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 11:54:37,763 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:37,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:37,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2139936215, now seen corresponding path program 24 times [2024-06-14 11:54:37,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:37,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96233599] [2024-06-14 11:54:37,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:37,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:39,949 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 11:54:39,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96233599] [2024-06-14 11:54:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96233599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:39,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:39,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:39,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808762992] [2024-06-14 11:54:39,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:39,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:39,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:39,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:39,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:40,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:40,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 239 transitions, 2411 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:40,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:40,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:40,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:40,561 INFO L124 PetriNetUnfolderBase]: 633/1291 cut-off events. [2024-06-14 11:54:40,561 INFO L125 PetriNetUnfolderBase]: For 231291/231291 co-relation queries the response was YES. [2024-06-14 11:54:40,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10050 conditions, 1291 events. 633/1291 cut-off events. For 231291/231291 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7715 event pairs, 200 based on Foata normal form. 2/1292 useless extension candidates. Maximal degree in co-relation 9923. Up to 1204 conditions per place. [2024-06-14 11:54:40,575 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 24 changer transitions 0/255 dead transitions. [2024-06-14 11:54:40,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 255 transitions, 3005 flow [2024-06-14 11:54:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:54:40,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 11:54:40,576 INFO L175 Difference]: Start difference. First operand has 321 places, 239 transitions, 2411 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:54:40,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 255 transitions, 3005 flow [2024-06-14 11:54:41,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 255 transitions, 2877 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:54:41,531 INFO L231 Difference]: Finished difference. Result has 316 places, 240 transitions, 2383 flow [2024-06-14 11:54:41,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2383, PETRI_PLACES=316, PETRI_TRANSITIONS=240} [2024-06-14 11:54:41,532 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-14 11:54:41,532 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 240 transitions, 2383 flow [2024-06-14 11:54:41,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:41,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:41,532 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 11:54:41,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 11:54:41,533 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:41,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash 629712819, now seen corresponding path program 37 times [2024-06-14 11:54:41,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:41,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925354675] [2024-06-14 11:54:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:41,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:42,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:42,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925354675] [2024-06-14 11:54:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925354675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:42,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:42,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:54:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111603893] [2024-06-14 11:54:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:42,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:54:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:54:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:54:42,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:42,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 240 transitions, 2383 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 11:54:42,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:42,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:42,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:43,552 INFO L124 PetriNetUnfolderBase]: 649/1327 cut-off events. [2024-06-14 11:54:43,553 INFO L125 PetriNetUnfolderBase]: For 269418/269418 co-relation queries the response was YES. [2024-06-14 11:54:43,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10065 conditions, 1327 events. 649/1327 cut-off events. For 269418/269418 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7990 event pairs, 200 based on Foata normal form. 10/1336 useless extension candidates. Maximal degree in co-relation 9939. Up to 1201 conditions per place. [2024-06-14 11:54:43,566 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 22 changer transitions 13/261 dead transitions. [2024-06-14 11:54:43,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 261 transitions, 3003 flow [2024-06-14 11:54:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:54:43,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 11:54:43,567 INFO L175 Difference]: Start difference. First operand has 316 places, 240 transitions, 2383 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:54:43,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 261 transitions, 3003 flow [2024-06-14 11:54:44,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 261 transitions, 2913 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-14 11:54:44,467 INFO L231 Difference]: Finished difference. Result has 318 places, 235 transitions, 2288 flow [2024-06-14 11:54:44,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2288, PETRI_PLACES=318, PETRI_TRANSITIONS=235} [2024-06-14 11:54:44,468 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-14 11:54:44,468 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 235 transitions, 2288 flow [2024-06-14 11:54:44,468 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 11:54:44,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:44,468 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 11:54:44,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 11:54:44,468 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:44,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:44,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2139690261, now seen corresponding path program 38 times [2024-06-14 11:54:44,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:44,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936355072] [2024-06-14 11:54:44,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:44,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:48,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:48,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936355072] [2024-06-14 11:54:48,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936355072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:48,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:48,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087860389] [2024-06-14 11:54:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:48,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:48,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:48,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:48,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:48,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 235 transitions, 2288 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:48,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:48,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:48,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:49,796 INFO L124 PetriNetUnfolderBase]: 610/1250 cut-off events. [2024-06-14 11:54:49,796 INFO L125 PetriNetUnfolderBase]: For 219243/219243 co-relation queries the response was YES. [2024-06-14 11:54:49,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8636 conditions, 1250 events. 610/1250 cut-off events. For 219243/219243 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7425 event pairs, 183 based on Foata normal form. 10/1259 useless extension candidates. Maximal degree in co-relation 8509. Up to 1113 conditions per place. [2024-06-14 11:54:49,810 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 221 selfloop transitions, 25 changer transitions 9/257 dead transitions. [2024-06-14 11:54:49,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 257 transitions, 2904 flow [2024-06-14 11:54:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:49,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 11:54:49,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:54:49,811 INFO L175 Difference]: Start difference. First operand has 318 places, 235 transitions, 2288 flow. Second operand 12 states and 136 transitions. [2024-06-14 11:54:49,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 257 transitions, 2904 flow [2024-06-14 11:54:50,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 257 transitions, 2844 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-14 11:54:50,516 INFO L231 Difference]: Finished difference. Result has 312 places, 232 transitions, 2254 flow [2024-06-14 11:54:50,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2254, PETRI_PLACES=312, PETRI_TRANSITIONS=232} [2024-06-14 11:54:50,516 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-14 11:54:50,517 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 232 transitions, 2254 flow [2024-06-14 11:54:50,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:50,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:50,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:50,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 11:54:50,517 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:50,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:50,517 INFO L85 PathProgramCache]: Analyzing trace with hash -243587145, now seen corresponding path program 25 times [2024-06-14 11:54:50,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:50,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951728323] [2024-06-14 11:54:50,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:50,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:51,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:51,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951728323] [2024-06-14 11:54:51,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951728323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:51,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:51,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:51,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233678093] [2024-06-14 11:54:51,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:51,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:51,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:52,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:52,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 232 transitions, 2254 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:52,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:52,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:52,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:52,569 INFO L124 PetriNetUnfolderBase]: 604/1244 cut-off events. [2024-06-14 11:54:52,570 INFO L125 PetriNetUnfolderBase]: For 222689/222689 co-relation queries the response was YES. [2024-06-14 11:54:52,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8586 conditions, 1244 events. 604/1244 cut-off events. For 222689/222689 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7439 event pairs, 173 based on Foata normal form. 12/1255 useless extension candidates. Maximal degree in co-relation 8463. Up to 975 conditions per place. [2024-06-14 11:54:52,582 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 51 changer transitions 7/253 dead transitions. [2024-06-14 11:54:52,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 253 transitions, 2904 flow [2024-06-14 11:54:52,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:52,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:52,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:54:52,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:54:52,583 INFO L175 Difference]: Start difference. First operand has 312 places, 232 transitions, 2254 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:54:52,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 253 transitions, 2904 flow [2024-06-14 11:54:53,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 253 transitions, 2848 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:54:53,200 INFO L231 Difference]: Finished difference. Result has 308 places, 230 transitions, 2332 flow [2024-06-14 11:54:53,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2332, PETRI_PLACES=308, PETRI_TRANSITIONS=230} [2024-06-14 11:54:53,201 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-14 11:54:53,201 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 230 transitions, 2332 flow [2024-06-14 11:54:53,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:53,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:53,201 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 11:54:53,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 11:54:53,201 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:53,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:53,202 INFO L85 PathProgramCache]: Analyzing trace with hash -243594089, now seen corresponding path program 39 times [2024-06-14 11:54:53,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:53,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380733716] [2024-06-14 11:54:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:53,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:54,596 INFO 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 11:54:54,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:54,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380733716] [2024-06-14 11:54:54,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380733716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:54,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:54,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:54:54,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986073447] [2024-06-14 11:54:54,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:54,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:54:54,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:54,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:54:54,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:54:54,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:54,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 230 transitions, 2332 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 11:54:54,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:54,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:54,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:55,235 INFO L124 PetriNetUnfolderBase]: 604/1252 cut-off events. [2024-06-14 11:54:55,235 INFO L125 PetriNetUnfolderBase]: For 235164/235164 co-relation queries the response was YES. [2024-06-14 11:54:55,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 1252 events. 604/1252 cut-off events. For 235164/235164 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7522 event pairs, 181 based on Foata normal form. 16/1267 useless extension candidates. Maximal degree in co-relation 8515. Up to 965 conditions per place. [2024-06-14 11:54:55,249 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 45 changer transitions 14/250 dead transitions. [2024-06-14 11:54:55,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 250 transitions, 2928 flow [2024-06-14 11:54:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:55,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:54:55,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:54:55,250 INFO L175 Difference]: Start difference. First operand has 308 places, 230 transitions, 2332 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:54:55,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 250 transitions, 2928 flow [2024-06-14 11:54:55,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 250 transitions, 2780 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-14 11:54:55,855 INFO L231 Difference]: Finished difference. Result has 308 places, 224 transitions, 2227 flow [2024-06-14 11:54:55,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2227, PETRI_PLACES=308, PETRI_TRANSITIONS=224} [2024-06-14 11:54:55,855 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-14 11:54:55,855 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 224 transitions, 2227 flow [2024-06-14 11:54:55,856 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 11:54:55,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:55,856 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 11:54:55,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 11:54:55,856 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:55,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1473567269, now seen corresponding path program 26 times [2024-06-14 11:54:55,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491338939] [2024-06-14 11:54:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:55,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:57,461 INFO 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 11:54:57,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:57,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491338939] [2024-06-14 11:54:57,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491338939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:57,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:57,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:57,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612299547] [2024-06-14 11:54:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:57,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:57,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:57,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:57,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:54:57,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 224 transitions, 2227 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:57,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:57,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:54:57,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:58,043 INFO L124 PetriNetUnfolderBase]: 566/1174 cut-off events. [2024-06-14 11:54:58,043 INFO L125 PetriNetUnfolderBase]: For 167448/167448 co-relation queries the response was YES. [2024-06-14 11:54:58,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8295 conditions, 1174 events. 566/1174 cut-off events. For 167448/167448 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6970 event pairs, 167 based on Foata normal form. 2/1175 useless extension candidates. Maximal degree in co-relation 8173. Up to 1083 conditions per place. [2024-06-14 11:54:58,054 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 31 changer transitions 0/243 dead transitions. [2024-06-14 11:54:58,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 243 transitions, 2821 flow [2024-06-14 11:54:58,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:54:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:54:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:54:58,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 11:54:58,055 INFO L175 Difference]: Start difference. First operand has 308 places, 224 transitions, 2227 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:54:58,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 243 transitions, 2821 flow [2024-06-14 11:54:58,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 243 transitions, 2719 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 11:54:58,563 INFO L231 Difference]: Finished difference. Result has 302 places, 225 transitions, 2243 flow [2024-06-14 11:54:58,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2127, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2243, PETRI_PLACES=302, PETRI_TRANSITIONS=225} [2024-06-14 11:54:58,564 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-14 11:54:58,564 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 225 transitions, 2243 flow [2024-06-14 11:54:58,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:58,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:58,564 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 11:54:58,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 11:54:58,564 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:58,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1709742629, now seen corresponding path program 27 times [2024-06-14 11:54:58,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:58,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065047383] [2024-06-14 11:54:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:58,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:59,960 INFO 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 11:54:59,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:59,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065047383] [2024-06-14 11:54:59,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065047383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:59,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:59,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:54:59,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214736635] [2024-06-14 11:54:59,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:59,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:54:59,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:59,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:54:59,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:55:00,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:00,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 225 transitions, 2243 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 11:55:00,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:00,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:00,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:00,497 INFO L124 PetriNetUnfolderBase]: 570/1182 cut-off events. [2024-06-14 11:55:00,497 INFO L125 PetriNetUnfolderBase]: For 158756/158756 co-relation queries the response was YES. [2024-06-14 11:55:00,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8288 conditions, 1182 events. 570/1182 cut-off events. For 158756/158756 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7024 event pairs, 175 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 8169. Up to 1115 conditions per place. [2024-06-14 11:55:00,509 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 23 changer transitions 1/242 dead transitions. [2024-06-14 11:55:00,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 242 transitions, 2831 flow [2024-06-14 11:55:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 11:55:00,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-14 11:55:00,510 INFO L175 Difference]: Start difference. First operand has 302 places, 225 transitions, 2243 flow. Second operand 11 states and 122 transitions. [2024-06-14 11:55:00,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 242 transitions, 2831 flow [2024-06-14 11:55:01,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 242 transitions, 2723 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:01,083 INFO L231 Difference]: Finished difference. Result has 305 places, 226 transitions, 2245 flow [2024-06-14 11:55:01,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2137, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2245, PETRI_PLACES=305, PETRI_TRANSITIONS=226} [2024-06-14 11:55:01,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-14 11:55:01,083 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 226 transitions, 2245 flow [2024-06-14 11:55:01,083 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 11:55:01,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:01,084 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 11:55:01,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 11:55:01,084 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:01,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:01,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1709750999, now seen corresponding path program 28 times [2024-06-14 11:55:01,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:01,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322999450] [2024-06-14 11:55:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:01,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322999450] [2024-06-14 11:55:02,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322999450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:02,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:02,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:02,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902714104] [2024-06-14 11:55:02,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:02,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:02,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:02,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:02,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:02,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:02,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 226 transitions, 2245 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:02,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:02,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:02,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:03,217 INFO L124 PetriNetUnfolderBase]: 554/1150 cut-off events. [2024-06-14 11:55:03,217 INFO L125 PetriNetUnfolderBase]: For 161834/161834 co-relation queries the response was YES. [2024-06-14 11:55:03,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8156 conditions, 1150 events. 554/1150 cut-off events. For 161834/161834 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6814 event pairs, 171 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 8035. Up to 1058 conditions per place. [2024-06-14 11:55:03,229 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 27 changer transitions 0/242 dead transitions. [2024-06-14 11:55:03,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 242 transitions, 2819 flow [2024-06-14 11:55:03,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:55:03,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 11:55:03,230 INFO L175 Difference]: Start difference. First operand has 305 places, 226 transitions, 2245 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:55:03,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 242 transitions, 2819 flow [2024-06-14 11:55:03,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 242 transitions, 2729 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 11:55:03,771 INFO L231 Difference]: Finished difference. Result has 308 places, 227 transitions, 2267 flow [2024-06-14 11:55:03,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2267, PETRI_PLACES=308, PETRI_TRANSITIONS=227} [2024-06-14 11:55:03,772 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 277 predicate places. [2024-06-14 11:55:03,772 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 227 transitions, 2267 flow [2024-06-14 11:55:03,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:03,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:03,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:03,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 11:55:03,772 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:03,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1710039299, now seen corresponding path program 29 times [2024-06-14 11:55:03,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:03,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029675680] [2024-06-14 11:55:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:03,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:05,548 INFO 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 11:55:05,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:05,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029675680] [2024-06-14 11:55:05,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029675680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:05,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:05,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:05,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108069784] [2024-06-14 11:55:05,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:05,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:05,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:05,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:05,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 227 transitions, 2267 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:05,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:05,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:05,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:06,217 INFO L124 PetriNetUnfolderBase]: 558/1158 cut-off events. [2024-06-14 11:55:06,218 INFO L125 PetriNetUnfolderBase]: For 165390/165390 co-relation queries the response was YES. [2024-06-14 11:55:06,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8237 conditions, 1158 events. 558/1158 cut-off events. For 165390/165390 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6874 event pairs, 169 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 8115. Up to 1088 conditions per place. [2024-06-14 11:55:06,229 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 23 changer transitions 0/243 dead transitions. [2024-06-14 11:55:06,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 243 transitions, 2843 flow [2024-06-14 11:55:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 11:55:06,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:55:06,230 INFO L175 Difference]: Start difference. First operand has 308 places, 227 transitions, 2267 flow. Second operand 11 states and 121 transitions. [2024-06-14 11:55:06,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 243 transitions, 2843 flow [2024-06-14 11:55:06,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 243 transitions, 2700 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-14 11:55:06,821 INFO L231 Difference]: Finished difference. Result has 309 places, 228 transitions, 2230 flow [2024-06-14 11:55:06,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2230, PETRI_PLACES=309, PETRI_TRANSITIONS=228} [2024-06-14 11:55:06,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-14 11:55:06,821 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 228 transitions, 2230 flow [2024-06-14 11:55:06,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:06,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:06,821 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 11:55:06,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 11:55:06,821 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:06,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash -237100395, now seen corresponding path program 30 times [2024-06-14 11:55:06,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:06,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728156194] [2024-06-14 11:55:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:06,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:08,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:08,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728156194] [2024-06-14 11:55:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728156194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:08,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:08,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:08,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287226980] [2024-06-14 11:55:08,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:08,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:08,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:08,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:08,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 228 transitions, 2230 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:08,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:08,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:08,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:09,287 INFO L124 PetriNetUnfolderBase]: 562/1166 cut-off events. [2024-06-14 11:55:09,287 INFO L125 PetriNetUnfolderBase]: For 168760/168760 co-relation queries the response was YES. [2024-06-14 11:55:09,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8226 conditions, 1166 events. 562/1166 cut-off events. For 168760/168760 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6925 event pairs, 167 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 8104. Up to 1003 conditions per place. [2024-06-14 11:55:09,298 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 200 selfloop transitions, 42 changer transitions 0/244 dead transitions. [2024-06-14 11:55:09,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 244 transitions, 2818 flow [2024-06-14 11:55:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:55:09,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 11:55:09,299 INFO L175 Difference]: Start difference. First operand has 309 places, 228 transitions, 2230 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:55:09,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 244 transitions, 2818 flow [2024-06-14 11:55:09,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 244 transitions, 2722 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:09,925 INFO L231 Difference]: Finished difference. Result has 311 places, 229 transitions, 2280 flow [2024-06-14 11:55:09,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2280, PETRI_PLACES=311, PETRI_TRANSITIONS=229} [2024-06-14 11:55:09,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-14 11:55:09,925 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 229 transitions, 2280 flow [2024-06-14 11:55:09,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:09,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:09,925 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 11:55:09,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 11:55:09,925 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:09,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1473560325, now seen corresponding path program 40 times [2024-06-14 11:55:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:09,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682329212] [2024-06-14 11:55:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:09,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:11,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:11,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682329212] [2024-06-14 11:55:11,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682329212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:11,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:11,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:11,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351441013] [2024-06-14 11:55:11,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:11,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:11,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:11,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:11,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:11,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 229 transitions, 2280 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:11,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:11,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:11,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:12,374 INFO L124 PetriNetUnfolderBase]: 578/1202 cut-off events. [2024-06-14 11:55:12,375 INFO L125 PetriNetUnfolderBase]: For 212529/212529 co-relation queries the response was YES. [2024-06-14 11:55:12,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8351 conditions, 1202 events. 578/1202 cut-off events. For 212529/212529 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7186 event pairs, 171 based on Foata normal form. 10/1211 useless extension candidates. Maximal degree in co-relation 8228. Up to 1067 conditions per place. [2024-06-14 11:55:12,388 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 29 changer transitions 11/253 dead transitions. [2024-06-14 11:55:12,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 253 transitions, 2896 flow [2024-06-14 11:55:12,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 11:55:12,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-14 11:55:12,389 INFO L175 Difference]: Start difference. First operand has 311 places, 229 transitions, 2280 flow. Second operand 12 states and 139 transitions. [2024-06-14 11:55:12,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 253 transitions, 2896 flow [2024-06-14 11:55:13,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 253 transitions, 2760 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:13,077 INFO L231 Difference]: Finished difference. Result has 314 places, 226 transitions, 2177 flow [2024-06-14 11:55:13,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2144, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2177, PETRI_PLACES=314, PETRI_TRANSITIONS=226} [2024-06-14 11:55:13,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-14 11:55:13,077 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 226 transitions, 2177 flow [2024-06-14 11:55:13,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:13,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:13,077 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 11:55:13,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 11:55:13,078 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:13,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1473387345, now seen corresponding path program 41 times [2024-06-14 11:55:13,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:13,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201639938] [2024-06-14 11:55:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:13,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:14,602 INFO 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 11:55:14,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:14,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201639938] [2024-06-14 11:55:14,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201639938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:14,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:14,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28113324] [2024-06-14 11:55:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:14,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:14,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 226 transitions, 2177 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:14,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:14,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:14,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:15,405 INFO L124 PetriNetUnfolderBase]: 568/1188 cut-off events. [2024-06-14 11:55:15,405 INFO L125 PetriNetUnfolderBase]: For 215002/215002 co-relation queries the response was YES. [2024-06-14 11:55:15,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8172 conditions, 1188 events. 568/1188 cut-off events. For 215002/215002 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7095 event pairs, 173 based on Foata normal form. 10/1197 useless extension candidates. Maximal degree in co-relation 8048. Up to 1038 conditions per place. [2024-06-14 11:55:15,417 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 208 selfloop transitions, 33 changer transitions 9/252 dead transitions. [2024-06-14 11:55:15,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 252 transitions, 2799 flow [2024-06-14 11:55:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:55:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:55:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-14 11:55:15,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3605769230769231 [2024-06-14 11:55:15,418 INFO L175 Difference]: Start difference. First operand has 314 places, 226 transitions, 2177 flow. Second operand 13 states and 150 transitions. [2024-06-14 11:55:15,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 252 transitions, 2799 flow [2024-06-14 11:55:15,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 252 transitions, 2737 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:55:15,957 INFO L231 Difference]: Finished difference. Result has 313 places, 223 transitions, 2163 flow [2024-06-14 11:55:15,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2115, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2163, PETRI_PLACES=313, PETRI_TRANSITIONS=223} [2024-06-14 11:55:15,958 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-14 11:55:15,958 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 223 transitions, 2163 flow [2024-06-14 11:55:15,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:15,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:15,958 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 11:55:15,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 11:55:15,958 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:15,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash -237092025, now seen corresponding path program 31 times [2024-06-14 11:55:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:15,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628639225] [2024-06-14 11:55:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:15,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:17,807 INFO 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 11:55:17,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:17,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628639225] [2024-06-14 11:55:17,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628639225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:17,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:17,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095997177] [2024-06-14 11:55:17,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:17,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:17,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:17,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:17,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:17,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:17,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 223 transitions, 2163 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:17,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:17,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:17,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:18,492 INFO L124 PetriNetUnfolderBase]: 548/1148 cut-off events. [2024-06-14 11:55:18,492 INFO L125 PetriNetUnfolderBase]: For 170870/170870 co-relation queries the response was YES. [2024-06-14 11:55:18,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 1148 events. 548/1148 cut-off events. For 170870/170870 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6861 event pairs, 167 based on Foata normal form. 2/1149 useless extension candidates. Maximal degree in co-relation 7962. Up to 948 conditions per place. [2024-06-14 11:55:18,503 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 47 changer transitions 0/239 dead transitions. [2024-06-14 11:55:18,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 239 transitions, 2739 flow [2024-06-14 11:55:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:18,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 11:55:18,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 11:55:18,509 INFO L175 Difference]: Start difference. First operand has 313 places, 223 transitions, 2163 flow. Second operand 11 states and 128 transitions. [2024-06-14 11:55:18,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 239 transitions, 2739 flow [2024-06-14 11:55:19,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 239 transitions, 2657 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-14 11:55:19,136 INFO L231 Difference]: Finished difference. Result has 309 places, 224 transitions, 2239 flow [2024-06-14 11:55:19,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2239, PETRI_PLACES=309, PETRI_TRANSITIONS=224} [2024-06-14 11:55:19,137 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-14 11:55:19,137 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 224 transitions, 2239 flow [2024-06-14 11:55:19,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:19,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:19,137 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 11:55:19,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 11:55:19,137 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:19,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash -237337979, now seen corresponding path program 42 times [2024-06-14 11:55:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34030846] [2024-06-14 11:55:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:19,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:20,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:20,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34030846] [2024-06-14 11:55:20,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34030846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:20,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:20,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:20,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965079389] [2024-06-14 11:55:20,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:20,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:20,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:20,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:20,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:20,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:20,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 224 transitions, 2239 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:20,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:20,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:20,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:21,588 INFO L124 PetriNetUnfolderBase]: 564/1184 cut-off events. [2024-06-14 11:55:21,588 INFO L125 PetriNetUnfolderBase]: For 212679/212679 co-relation queries the response was YES. [2024-06-14 11:55:21,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8251 conditions, 1184 events. 564/1184 cut-off events. For 212679/212679 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7129 event pairs, 171 based on Foata normal form. 10/1193 useless extension candidates. Maximal degree in co-relation 8128. Up to 954 conditions per place. [2024-06-14 11:55:21,600 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 190 selfloop transitions, 44 changer transitions 9/245 dead transitions. [2024-06-14 11:55:21,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 245 transitions, 2825 flow [2024-06-14 11:55:21,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:21,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:55:21,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:55:21,601 INFO L175 Difference]: Start difference. First operand has 309 places, 224 transitions, 2239 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:55:21,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 245 transitions, 2825 flow [2024-06-14 11:55:22,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 245 transitions, 2677 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:22,170 INFO L231 Difference]: Finished difference. Result has 312 places, 221 transitions, 2160 flow [2024-06-14 11:55:22,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2160, PETRI_PLACES=312, PETRI_TRANSITIONS=221} [2024-06-14 11:55:22,170 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-14 11:55:22,170 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 221 transitions, 2160 flow [2024-06-14 11:55:22,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:22,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:22,170 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 11:55:22,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 11:55:22,170 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:22,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash -243771719, now seen corresponding path program 43 times [2024-06-14 11:55:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:22,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008566249] [2024-06-14 11:55:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:22,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:23,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:23,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008566249] [2024-06-14 11:55:23,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008566249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:23,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:23,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733228392] [2024-06-14 11:55:23,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:23,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:23,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:23,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:23,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 221 transitions, 2160 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:23,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:23,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:23,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:24,396 INFO L124 PetriNetUnfolderBase]: 550/1162 cut-off events. [2024-06-14 11:55:24,396 INFO L125 PetriNetUnfolderBase]: For 204324/204324 co-relation queries the response was YES. [2024-06-14 11:55:24,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8054 conditions, 1162 events. 550/1162 cut-off events. For 204324/204324 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6966 event pairs, 167 based on Foata normal form. 8/1169 useless extension candidates. Maximal degree in co-relation 7930. Up to 938 conditions per place. [2024-06-14 11:55:24,408 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 43 changer transitions 12/241 dead transitions. [2024-06-14 11:55:24,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 241 transitions, 2720 flow [2024-06-14 11:55:24,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 11:55:24,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 11:55:24,409 INFO L175 Difference]: Start difference. First operand has 312 places, 221 transitions, 2160 flow. Second operand 12 states and 136 transitions. [2024-06-14 11:55:24,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 241 transitions, 2720 flow [2024-06-14 11:55:24,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 241 transitions, 2626 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:55:24,971 INFO L231 Difference]: Finished difference. Result has 310 places, 217 transitions, 2122 flow [2024-06-14 11:55:24,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2122, PETRI_PLACES=310, PETRI_TRANSITIONS=217} [2024-06-14 11:55:24,971 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-14 11:55:24,972 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 217 transitions, 2122 flow [2024-06-14 11:55:24,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:24,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:24,972 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 11:55:24,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 11:55:24,972 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:24,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:24,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1473382695, now seen corresponding path program 44 times [2024-06-14 11:55:24,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:24,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187360558] [2024-06-14 11:55:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:24,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:26,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187360558] [2024-06-14 11:55:26,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187360558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:26,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:26,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:26,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2690685] [2024-06-14 11:55:26,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:26,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:26,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:26,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:26,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:26,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:26,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 217 transitions, 2122 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:26,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:26,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:26,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:27,179 INFO L124 PetriNetUnfolderBase]: 564/1192 cut-off events. [2024-06-14 11:55:27,180 INFO L125 PetriNetUnfolderBase]: For 243705/243705 co-relation queries the response was YES. [2024-06-14 11:55:27,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9079 conditions, 1192 events. 564/1192 cut-off events. For 243705/243705 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7156 event pairs, 177 based on Foata normal form. 8/1199 useless extension candidates. Maximal degree in co-relation 8956. Up to 923 conditions per place. [2024-06-14 11:55:27,191 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 29 changer transitions 8/245 dead transitions. [2024-06-14 11:55:27,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 245 transitions, 2994 flow [2024-06-14 11:55:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 11:55:27,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 11:55:27,192 INFO L175 Difference]: Start difference. First operand has 310 places, 217 transitions, 2122 flow. Second operand 12 states and 143 transitions. [2024-06-14 11:55:27,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 245 transitions, 2994 flow [2024-06-14 11:55:27,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 245 transitions, 2892 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 11:55:27,774 INFO L231 Difference]: Finished difference. Result has 304 places, 214 transitions, 2062 flow [2024-06-14 11:55:27,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2062, PETRI_PLACES=304, PETRI_TRANSITIONS=214} [2024-06-14 11:55:27,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-14 11:55:27,775 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 214 transitions, 2062 flow [2024-06-14 11:55:27,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:27,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:27,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 11:55:27,775 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:27,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1480054019, now seen corresponding path program 32 times [2024-06-14 11:55:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787050668] [2024-06-14 11:55:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:29,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:29,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787050668] [2024-06-14 11:55:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787050668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:29,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:29,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503055447] [2024-06-14 11:55:29,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:29,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:29,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:29,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:29,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:29,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:29,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 214 transitions, 2062 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:29,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:29,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:29,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:29,928 INFO L124 PetriNetUnfolderBase]: 542/1146 cut-off events. [2024-06-14 11:55:29,928 INFO L125 PetriNetUnfolderBase]: For 190670/190670 co-relation queries the response was YES. [2024-06-14 11:55:29,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8514 conditions, 1146 events. 542/1146 cut-off events. For 190670/190670 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6826 event pairs, 182 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 8394. Up to 1047 conditions per place. [2024-06-14 11:55:29,940 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 200 selfloop transitions, 30 changer transitions 0/232 dead transitions. [2024-06-14 11:55:29,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 232 transitions, 2640 flow [2024-06-14 11:55:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:55:29,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 11:55:29,941 INFO L175 Difference]: Start difference. First operand has 304 places, 214 transitions, 2062 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:55:29,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 232 transitions, 2640 flow [2024-06-14 11:55:30,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 232 transitions, 2579 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-14 11:55:30,494 INFO L231 Difference]: Finished difference. Result has 299 places, 215 transitions, 2127 flow [2024-06-14 11:55:30,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2127, PETRI_PLACES=299, PETRI_TRANSITIONS=215} [2024-06-14 11:55:30,495 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-14 11:55:30,495 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 215 transitions, 2127 flow [2024-06-14 11:55:30,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:30,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:30,495 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 11:55:30,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 11:55:30,495 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:30,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1252087001, now seen corresponding path program 33 times [2024-06-14 11:55:30,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:30,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580502100] [2024-06-14 11:55:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:30,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:32,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:32,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580502100] [2024-06-14 11:55:32,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580502100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:32,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:32,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:32,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307268657] [2024-06-14 11:55:32,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:32,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:32,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:32,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:32,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:32,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:32,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 215 transitions, 2127 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:32,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:32,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:32,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:32,599 INFO L124 PetriNetUnfolderBase]: 539/1141 cut-off events. [2024-06-14 11:55:32,599 INFO L125 PetriNetUnfolderBase]: For 173808/173808 co-relation queries the response was YES. [2024-06-14 11:55:32,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8193 conditions, 1141 events. 539/1141 cut-off events. For 173808/173808 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6815 event pairs, 181 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 8076. Up to 1030 conditions per place. [2024-06-14 11:55:32,610 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 30 changer transitions 0/231 dead transitions. [2024-06-14 11:55:32,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 231 transitions, 2633 flow [2024-06-14 11:55:32,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:55:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:55:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:55:32,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 11:55:32,611 INFO L175 Difference]: Start difference. First operand has 299 places, 215 transitions, 2127 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:55:32,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 231 transitions, 2633 flow [2024-06-14 11:55:33,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 231 transitions, 2517 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-14 11:55:33,307 INFO L231 Difference]: Finished difference. Result has 301 places, 215 transitions, 2075 flow [2024-06-14 11:55:33,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2075, PETRI_PLACES=301, PETRI_TRANSITIONS=215} [2024-06-14 11:55:33,307 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 11:55:33,307 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 215 transitions, 2075 flow [2024-06-14 11:55:33,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:33,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:33,307 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 11:55:33,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 11:55:33,308 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:33,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1252332955, now seen corresponding path program 45 times [2024-06-14 11:55:33,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:33,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224773303] [2024-06-14 11:55:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:33,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:35,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:35,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224773303] [2024-06-14 11:55:35,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224773303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:35,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:35,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:55:35,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533990261] [2024-06-14 11:55:35,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:35,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:55:35,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:55:35,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:55:35,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:35,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 215 transitions, 2075 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:35,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:35,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:35,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:36,214 INFO L124 PetriNetUnfolderBase]: 526/1118 cut-off events. [2024-06-14 11:55:36,214 INFO L125 PetriNetUnfolderBase]: For 165855/165855 co-relation queries the response was YES. [2024-06-14 11:55:36,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7048 conditions, 1118 events. 526/1118 cut-off events. For 165855/165855 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6667 event pairs, 168 based on Foata normal form. 10/1127 useless extension candidates. Maximal degree in co-relation 6930. Up to 977 conditions per place. [2024-06-14 11:55:36,224 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 27 changer transitions 9/236 dead transitions. [2024-06-14 11:55:36,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 236 transitions, 2625 flow [2024-06-14 11:55:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 11:55:36,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-14 11:55:36,225 INFO L175 Difference]: Start difference. First operand has 301 places, 215 transitions, 2075 flow. Second operand 12 states and 139 transitions. [2024-06-14 11:55:36,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 236 transitions, 2625 flow [2024-06-14 11:55:36,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 236 transitions, 2353 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-14 11:55:36,667 INFO L231 Difference]: Finished difference. Result has 301 places, 211 transitions, 1820 flow [2024-06-14 11:55:36,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1820, PETRI_PLACES=301, PETRI_TRANSITIONS=211} [2024-06-14 11:55:36,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 11:55:36,667 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 211 transitions, 1820 flow [2024-06-14 11:55:36,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:36,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:36,668 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 11:55:36,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 11:55:36,668 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:36,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:36,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1157183819, now seen corresponding path program 1 times [2024-06-14 11:55:36,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:36,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621932270] [2024-06-14 11:55:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:36,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:38,596 INFO 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 11:55:38,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:38,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621932270] [2024-06-14 11:55:38,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621932270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:38,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:38,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:55:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098045647] [2024-06-14 11:55:38,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:38,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:55:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:55:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:55:38,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:38,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 211 transitions, 1820 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:38,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:38,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:38,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:39,153 INFO L124 PetriNetUnfolderBase]: 508/1088 cut-off events. [2024-06-14 11:55:39,153 INFO L125 PetriNetUnfolderBase]: For 147292/147292 co-relation queries the response was YES. [2024-06-14 11:55:39,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6514 conditions, 1088 events. 508/1088 cut-off events. For 147292/147292 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6500 event pairs, 116 based on Foata normal form. 6/1093 useless extension candidates. Maximal degree in co-relation 6397. Up to 944 conditions per place. [2024-06-14 11:55:39,163 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 13 changer transitions 35/231 dead transitions. [2024-06-14 11:55:39,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 231 transitions, 2340 flow [2024-06-14 11:55:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:39,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 11:55:39,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-14 11:55:39,164 INFO L175 Difference]: Start difference. First operand has 301 places, 211 transitions, 1820 flow. Second operand 12 states and 127 transitions. [2024-06-14 11:55:39,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 231 transitions, 2340 flow [2024-06-14 11:55:39,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 231 transitions, 2178 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-06-14 11:55:39,568 INFO L231 Difference]: Finished difference. Result has 295 places, 189 transitions, 1554 flow [2024-06-14 11:55:39,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1554, PETRI_PLACES=295, PETRI_TRANSITIONS=189} [2024-06-14 11:55:39,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 11:55:39,568 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 189 transitions, 1554 flow [2024-06-14 11:55:39,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:39,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:39,568 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 11:55:39,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-14 11:55:39,568 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:39,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash -317337961, now seen corresponding path program 2 times [2024-06-14 11:55:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741585228] [2024-06-14 11:55:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:39,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741585228] [2024-06-14 11:55:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741585228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:41,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:41,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:55:41,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935681520] [2024-06-14 11:55:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:55:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:55:41,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:55:41,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:41,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 189 transitions, 1554 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:41,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:41,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:41,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:42,014 INFO L124 PetriNetUnfolderBase]: 473/1002 cut-off events. [2024-06-14 11:55:42,014 INFO L125 PetriNetUnfolderBase]: For 142025/142025 co-relation queries the response was YES. [2024-06-14 11:55:42,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5908 conditions, 1002 events. 473/1002 cut-off events. For 142025/142025 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5790 event pairs, 102 based on Foata normal form. 6/1007 useless extension candidates. Maximal degree in co-relation 5795. Up to 553 conditions per place. [2024-06-14 11:55:42,023 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 67 changer transitions 17/211 dead transitions. [2024-06-14 11:55:42,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 211 transitions, 2048 flow [2024-06-14 11:55:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:42,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 11:55:42,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:55:42,024 INFO L175 Difference]: Start difference. First operand has 295 places, 189 transitions, 1554 flow. Second operand 12 states and 138 transitions. [2024-06-14 11:55:42,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 211 transitions, 2048 flow [2024-06-14 11:55:42,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 211 transitions, 1960 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-06-14 11:55:42,389 INFO L231 Difference]: Finished difference. Result has 267 places, 180 transitions, 1538 flow [2024-06-14 11:55:42,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1538, PETRI_PLACES=267, PETRI_TRANSITIONS=180} [2024-06-14 11:55:42,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 236 predicate places. [2024-06-14 11:55:42,389 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 180 transitions, 1538 flow [2024-06-14 11:55:42,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:42,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:42,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:55:42,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-14 11:55:42,390 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:42,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash -372987863, now seen corresponding path program 3 times [2024-06-14 11:55:42,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:42,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394849115] [2024-06-14 11:55:42,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:42,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:55:44,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:44,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394849115] [2024-06-14 11:55:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394849115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:44,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:44,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:55:44,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546009090] [2024-06-14 11:55:44,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:44,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:55:44,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:44,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:55:44,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:55:44,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:44,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 180 transitions, 1538 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:44,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:44,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:44,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:45,158 INFO L124 PetriNetUnfolderBase]: 439/928 cut-off events. [2024-06-14 11:55:45,158 INFO L125 PetriNetUnfolderBase]: For 99736/99736 co-relation queries the response was YES. [2024-06-14 11:55:45,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 928 events. 439/928 cut-off events. For 99736/99736 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5236 event pairs, 89 based on Foata normal form. 6/933 useless extension candidates. Maximal degree in co-relation 4849. Up to 506 conditions per place. [2024-06-14 11:55:45,165 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 66 changer transitions 15/201 dead transitions. [2024-06-14 11:55:45,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 201 transitions, 2002 flow [2024-06-14 11:55:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:45,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 11:55:45,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 11:55:45,166 INFO L175 Difference]: Start difference. First operand has 267 places, 180 transitions, 1538 flow. Second operand 12 states and 135 transitions. [2024-06-14 11:55:45,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 201 transitions, 2002 flow [2024-06-14 11:55:45,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 201 transitions, 1860 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:55:45,343 INFO L231 Difference]: Finished difference. Result has 261 places, 173 transitions, 1478 flow [2024-06-14 11:55:45,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1478, PETRI_PLACES=261, PETRI_TRANSITIONS=173} [2024-06-14 11:55:45,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-14 11:55:45,344 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 173 transitions, 1478 flow [2024-06-14 11:55:45,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:45,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:45,344 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 11:55:45,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-14 11:55:45,344 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:45,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash -115989241, now seen corresponding path program 4 times [2024-06-14 11:55:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:45,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825687620] [2024-06-14 11:55:45,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:45,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:47,653 INFO 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 11:55:47,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:47,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825687620] [2024-06-14 11:55:47,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825687620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:47,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:47,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:55:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270549394] [2024-06-14 11:55:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:47,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:55:47,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:47,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:55:47,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:55:47,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:47,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 173 transitions, 1478 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:47,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:47,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:47,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:48,357 INFO L124 PetriNetUnfolderBase]: 417/890 cut-off events. [2024-06-14 11:55:48,357 INFO L125 PetriNetUnfolderBase]: For 93286/93286 co-relation queries the response was YES. [2024-06-14 11:55:48,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 890 events. 417/890 cut-off events. For 93286/93286 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5012 event pairs, 85 based on Foata normal form. 6/895 useless extension candidates. Maximal degree in co-relation 4651. Up to 474 conditions per place. [2024-06-14 11:55:48,364 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 60 changer transitions 15/194 dead transitions. [2024-06-14 11:55:48,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 194 transitions, 1924 flow [2024-06-14 11:55:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 11:55:48,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-14 11:55:48,364 INFO L175 Difference]: Start difference. First operand has 261 places, 173 transitions, 1478 flow. Second operand 12 states and 135 transitions. [2024-06-14 11:55:48,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 194 transitions, 1924 flow [2024-06-14 11:55:48,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 194 transitions, 1786 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:55:48,526 INFO L231 Difference]: Finished difference. Result has 256 places, 164 transitions, 1398 flow [2024-06-14 11:55:48,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1398, PETRI_PLACES=256, PETRI_TRANSITIONS=164} [2024-06-14 11:55:48,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-14 11:55:48,526 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 164 transitions, 1398 flow [2024-06-14 11:55:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:48,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:48,527 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 11:55:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-14 11:55:48,527 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:48,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:48,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1175617845, now seen corresponding path program 5 times [2024-06-14 11:55:48,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:48,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27421960] [2024-06-14 11:55:48,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:48,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:51,398 INFO 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 11:55:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:51,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27421960] [2024-06-14 11:55:51,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27421960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:51,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:51,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:55:51,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827894965] [2024-06-14 11:55:51,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:51,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:55:51,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:51,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:55:51,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:55:51,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:51,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 164 transitions, 1398 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:51,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:51,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:51,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:52,075 INFO L124 PetriNetUnfolderBase]: 394/841 cut-off events. [2024-06-14 11:55:52,075 INFO L125 PetriNetUnfolderBase]: For 88974/88974 co-relation queries the response was YES. [2024-06-14 11:55:52,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4529 conditions, 841 events. 394/841 cut-off events. For 88974/88974 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4630 event pairs, 87 based on Foata normal form. 6/846 useless extension candidates. Maximal degree in co-relation 4429. Up to 470 conditions per place. [2024-06-14 11:55:52,082 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 105 selfloop transitions, 44 changer transitions 33/184 dead transitions. [2024-06-14 11:55:52,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 184 transitions, 1822 flow [2024-06-14 11:55:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 11:55:52,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:55:52,083 INFO L175 Difference]: Start difference. First operand has 256 places, 164 transitions, 1398 flow. Second operand 12 states and 132 transitions. [2024-06-14 11:55:52,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 184 transitions, 1822 flow [2024-06-14 11:55:52,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 184 transitions, 1692 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-14 11:55:52,251 INFO L231 Difference]: Finished difference. Result has 246 places, 144 transitions, 1197 flow [2024-06-14 11:55:52,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1197, PETRI_PLACES=246, PETRI_TRANSITIONS=144} [2024-06-14 11:55:52,251 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-14 11:55:52,251 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 144 transitions, 1197 flow [2024-06-14 11:55:52,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:52,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:52,252 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 11:55:52,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-14 11:55:52,252 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:52,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1537599955, now seen corresponding path program 6 times [2024-06-14 11:55:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:52,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734083764] [2024-06-14 11:55:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:52,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:54,629 INFO 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 11:55:54,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:54,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734083764] [2024-06-14 11:55:54,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734083764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:54,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:54,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:55:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231718630] [2024-06-14 11:55:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:54,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:55:54,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:54,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:55:54,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:55:54,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:54,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 144 transitions, 1197 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:54,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:54,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:54,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:55,388 INFO L124 PetriNetUnfolderBase]: 349/732 cut-off events. [2024-06-14 11:55:55,388 INFO L125 PetriNetUnfolderBase]: For 60916/60916 co-relation queries the response was YES. [2024-06-14 11:55:55,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3543 conditions, 732 events. 349/732 cut-off events. For 60916/60916 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3869 event pairs, 68 based on Foata normal form. 6/737 useless extension candidates. Maximal degree in co-relation 3447. Up to 540 conditions per place. [2024-06-14 11:55:55,393 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 32 changer transitions 18/163 dead transitions. [2024-06-14 11:55:55,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 163 transitions, 1579 flow [2024-06-14 11:55:55,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 11:55:55,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 11:55:55,394 INFO L175 Difference]: Start difference. First operand has 246 places, 144 transitions, 1197 flow. Second operand 12 states and 134 transitions. [2024-06-14 11:55:55,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 163 transitions, 1579 flow [2024-06-14 11:55:55,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 163 transitions, 1428 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-06-14 11:55:55,503 INFO L231 Difference]: Finished difference. Result has 219 places, 135 transitions, 1049 flow [2024-06-14 11:55:55,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1049, PETRI_PLACES=219, PETRI_TRANSITIONS=135} [2024-06-14 11:55:55,503 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-14 11:55:55,503 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 135 transitions, 1049 flow [2024-06-14 11:55:55,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:55,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:55,504 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 11:55:55,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-14 11:55:55,504 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:55,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:55,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1214207931, now seen corresponding path program 7 times [2024-06-14 11:55:55,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:55,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370103497] [2024-06-14 11:55:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:55,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:55:57,565 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 11:55:57,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:55:57,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370103497] [2024-06-14 11:55:57,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370103497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:55:57,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:55:57,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:55:57,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098519292] [2024-06-14 11:55:57,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:55:57,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:55:57,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:55:57,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:55:57,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:55:57,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:55:57,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 135 transitions, 1049 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:57,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:55:57,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:55:57,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:55:58,244 INFO L124 PetriNetUnfolderBase]: 333/696 cut-off events. [2024-06-14 11:55:58,244 INFO L125 PetriNetUnfolderBase]: For 50763/50763 co-relation queries the response was YES. [2024-06-14 11:55:58,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 696 events. 333/696 cut-off events. For 50763/50763 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3611 event pairs, 70 based on Foata normal form. 6/701 useless extension candidates. Maximal degree in co-relation 3167. Up to 578 conditions per place. [2024-06-14 11:55:58,248 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 18 changer transitions 22/153 dead transitions. [2024-06-14 11:55:58,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 153 transitions, 1401 flow [2024-06-14 11:55:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:55:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:55:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 11:55:58,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:55:58,249 INFO L175 Difference]: Start difference. First operand has 219 places, 135 transitions, 1049 flow. Second operand 12 states and 128 transitions. [2024-06-14 11:55:58,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 153 transitions, 1401 flow [2024-06-14 11:55:58,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 153 transitions, 1319 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 11:55:58,338 INFO L231 Difference]: Finished difference. Result has 207 places, 125 transitions, 937 flow [2024-06-14 11:55:58,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=937, PETRI_PLACES=207, PETRI_TRANSITIONS=125} [2024-06-14 11:55:58,338 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-14 11:55:58,338 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 125 transitions, 937 flow [2024-06-14 11:55:58,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:55:58,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:55:58,339 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 11:55:58,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-14 11:55:58,339 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:55:58,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:55:58,339 INFO L85 PathProgramCache]: Analyzing trace with hash -478230821, now seen corresponding path program 8 times [2024-06-14 11:55:58,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:55:58,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806999996] [2024-06-14 11:55:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:55:58,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:55:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:00,531 INFO 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 11:56:00,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:00,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806999996] [2024-06-14 11:56:00,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806999996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:00,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:00,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:00,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151552997] [2024-06-14 11:56:00,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:00,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:00,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:00,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:00,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:00,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 125 transitions, 937 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:00,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:00,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:00,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:01,253 INFO L124 PetriNetUnfolderBase]: 313/652 cut-off events. [2024-06-14 11:56:01,253 INFO L125 PetriNetUnfolderBase]: For 45825/45825 co-relation queries the response was YES. [2024-06-14 11:56:01,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998 conditions, 652 events. 313/652 cut-off events. For 45825/45825 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3311 event pairs, 66 based on Foata normal form. 6/657 useless extension candidates. Maximal degree in co-relation 2915. Up to 508 conditions per place. [2024-06-14 11:56:01,258 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 28 changer transitions 13/143 dead transitions. [2024-06-14 11:56:01,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 143 transitions, 1271 flow [2024-06-14 11:56:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 11:56:01,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 11:56:01,259 INFO L175 Difference]: Start difference. First operand has 207 places, 125 transitions, 937 flow. Second operand 12 states and 129 transitions. [2024-06-14 11:56:01,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 143 transitions, 1271 flow [2024-06-14 11:56:01,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 143 transitions, 1216 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 11:56:01,328 INFO L231 Difference]: Finished difference. Result has 194 places, 120 transitions, 912 flow [2024-06-14 11:56:01,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=912, PETRI_PLACES=194, PETRI_TRANSITIONS=120} [2024-06-14 11:56:01,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-14 11:56:01,328 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 120 transitions, 912 flow [2024-06-14 11:56:01,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:01,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:01,328 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 11:56:01,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-14 11:56:01,329 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:01,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:01,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1094675945, now seen corresponding path program 9 times [2024-06-14 11:56:01,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:01,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896668619] [2024-06-14 11:56:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:01,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:03,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:03,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:03,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896668619] [2024-06-14 11:56:03,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896668619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:03,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:03,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:03,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840003622] [2024-06-14 11:56:03,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:03,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:03,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:03,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:03,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:03,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:03,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 120 transitions, 912 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:03,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:03,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:03,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:03,689 INFO L124 PetriNetUnfolderBase]: 297/624 cut-off events. [2024-06-14 11:56:03,689 INFO L125 PetriNetUnfolderBase]: For 38495/38495 co-relation queries the response was YES. [2024-06-14 11:56:03,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 624 events. 297/624 cut-off events. For 38495/38495 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3140 event pairs, 66 based on Foata normal form. 6/629 useless extension candidates. Maximal degree in co-relation 2767. Up to 496 conditions per place. [2024-06-14 11:56:03,693 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 22 changer transitions 16/138 dead transitions. [2024-06-14 11:56:03,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 138 transitions, 1236 flow [2024-06-14 11:56:03,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:03,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:03,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 11:56:03,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 11:56:03,694 INFO L175 Difference]: Start difference. First operand has 194 places, 120 transitions, 912 flow. Second operand 12 states and 129 transitions. [2024-06-14 11:56:03,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 138 transitions, 1236 flow [2024-06-14 11:56:03,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 138 transitions, 1174 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:03,749 INFO L231 Difference]: Finished difference. Result has 190 places, 113 transitions, 852 flow [2024-06-14 11:56:03,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=852, PETRI_PLACES=190, PETRI_TRANSITIONS=113} [2024-06-14 11:56:03,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-14 11:56:03,750 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 113 transitions, 852 flow [2024-06-14 11:56:03,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:03,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:03,750 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 11:56:03,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-14 11:56:03,750 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:03,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:03,751 INFO L85 PathProgramCache]: Analyzing trace with hash -477971351, now seen corresponding path program 10 times [2024-06-14 11:56:03,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:03,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123266689] [2024-06-14 11:56:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:03,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:05,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:05,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:05,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123266689] [2024-06-14 11:56:05,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123266689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:05,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:05,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:05,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621880156] [2024-06-14 11:56:05,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:05,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:05,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:05,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:05,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:05,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:05,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 113 transitions, 852 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:05,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:05,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:05,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:06,153 INFO L124 PetriNetUnfolderBase]: 283/594 cut-off events. [2024-06-14 11:56:06,153 INFO L125 PetriNetUnfolderBase]: For 36145/36145 co-relation queries the response was YES. [2024-06-14 11:56:06,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 594 events. 283/594 cut-off events. For 36145/36145 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2914 event pairs, 64 based on Foata normal form. 6/599 useless extension candidates. Maximal degree in co-relation 2633. Up to 476 conditions per place. [2024-06-14 11:56:06,157 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 12 changer transitions 30/131 dead transitions. [2024-06-14 11:56:06,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 131 transitions, 1158 flow [2024-06-14 11:56:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 11:56:06,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-14 11:56:06,158 INFO L175 Difference]: Start difference. First operand has 190 places, 113 transitions, 852 flow. Second operand 12 states and 127 transitions. [2024-06-14 11:56:06,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 131 transitions, 1158 flow [2024-06-14 11:56:06,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 131 transitions, 1083 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:56:06,218 INFO L231 Difference]: Finished difference. Result has 182 places, 98 transitions, 702 flow [2024-06-14 11:56:06,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=702, PETRI_PLACES=182, PETRI_TRANSITIONS=98} [2024-06-14 11:56:06,219 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-14 11:56:06,219 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 98 transitions, 702 flow [2024-06-14 11:56:06,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:06,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:06,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:06,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-14 11:56:06,219 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:06,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:06,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2066617547, now seen corresponding path program 11 times [2024-06-14 11:56:06,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:06,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505701123] [2024-06-14 11:56:06,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:06,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:08,288 INFO 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 11:56:08,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:08,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505701123] [2024-06-14 11:56:08,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505701123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:08,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:08,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:08,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246242883] [2024-06-14 11:56:08,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:08,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:08,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:08,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:08,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 98 transitions, 702 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:08,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:08,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:08,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:08,959 INFO L124 PetriNetUnfolderBase]: 258/532 cut-off events. [2024-06-14 11:56:08,959 INFO L125 PetriNetUnfolderBase]: For 32640/32640 co-relation queries the response was YES. [2024-06-14 11:56:08,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 532 events. 258/532 cut-off events. For 32640/32640 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2536 event pairs, 60 based on Foata normal form. 6/538 useless extension candidates. Maximal degree in co-relation 2346. Up to 420 conditions per place. [2024-06-14 11:56:08,962 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 22 changer transitions 11/116 dead transitions. [2024-06-14 11:56:08,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 116 transitions, 986 flow [2024-06-14 11:56:08,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 11:56:08,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 11:56:08,963 INFO L175 Difference]: Start difference. First operand has 182 places, 98 transitions, 702 flow. Second operand 12 states and 129 transitions. [2024-06-14 11:56:08,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 116 transitions, 986 flow [2024-06-14 11:56:09,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 116 transitions, 914 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-06-14 11:56:09,008 INFO L231 Difference]: Finished difference. Result has 158 places, 95 transitions, 662 flow [2024-06-14 11:56:09,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=662, PETRI_PLACES=158, PETRI_TRANSITIONS=95} [2024-06-14 11:56:09,008 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-14 11:56:09,008 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 95 transitions, 662 flow [2024-06-14 11:56:09,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:09,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:09,009 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 11:56:09,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-14 11:56:09,009 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:09,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:09,009 INFO L85 PathProgramCache]: Analyzing trace with hash 815095341, now seen corresponding path program 12 times [2024-06-14 11:56:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:09,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889337217] [2024-06-14 11:56:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:09,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:11,232 INFO 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 11:56:11,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:11,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889337217] [2024-06-14 11:56:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889337217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:11,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:11,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631977670] [2024-06-14 11:56:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:11,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:11,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:11,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:11,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:11,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:11,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 95 transitions, 662 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:11,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:11,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:11,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:11,683 INFO L124 PetriNetUnfolderBase]: 248/514 cut-off events. [2024-06-14 11:56:11,683 INFO L125 PetriNetUnfolderBase]: For 25446/25446 co-relation queries the response was YES. [2024-06-14 11:56:11,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 514 events. 248/514 cut-off events. For 25446/25446 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2434 event pairs, 50 based on Foata normal form. 6/520 useless extension candidates. Maximal degree in co-relation 2208. Up to 324 conditions per place. [2024-06-14 11:56:11,686 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 60 selfloop transitions, 36 changer transitions 14/112 dead transitions. [2024-06-14 11:56:11,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 112 transitions, 932 flow [2024-06-14 11:56:11,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 11:56:11,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 11:56:11,687 INFO L175 Difference]: Start difference. First operand has 158 places, 95 transitions, 662 flow. Second operand 12 states and 126 transitions. [2024-06-14 11:56:11,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 112 transitions, 932 flow [2024-06-14 11:56:11,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 112 transitions, 882 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:11,731 INFO L231 Difference]: Finished difference. Result has 154 places, 90 transitions, 660 flow [2024-06-14 11:56:11,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=660, PETRI_PLACES=154, PETRI_TRANSITIONS=90} [2024-06-14 11:56:11,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-14 11:56:11,731 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 90 transitions, 660 flow [2024-06-14 11:56:11,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:11,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:11,732 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 11:56:11,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-14 11:56:11,732 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:11,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:11,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1462414731, now seen corresponding path program 13 times [2024-06-14 11:56:11,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:11,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800193800] [2024-06-14 11:56:11,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:11,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:13,763 INFO 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 11:56:13,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:13,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800193800] [2024-06-14 11:56:13,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800193800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:13,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:13,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:13,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902540031] [2024-06-14 11:56:13,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:13,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:13,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:13,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:13,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 90 transitions, 660 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:13,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:13,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:13,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:14,231 INFO L124 PetriNetUnfolderBase]: 238/492 cut-off events. [2024-06-14 11:56:14,231 INFO L125 PetriNetUnfolderBase]: For 23628/23628 co-relation queries the response was YES. [2024-06-14 11:56:14,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2220 conditions, 492 events. 238/492 cut-off events. For 23628/23628 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2265 event pairs, 56 based on Foata normal form. 6/498 useless extension candidates. Maximal degree in co-relation 2158. Up to 395 conditions per place. [2024-06-14 11:56:14,234 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 73 selfloop transitions, 20 changer transitions 12/107 dead transitions. [2024-06-14 11:56:14,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 107 transitions, 918 flow [2024-06-14 11:56:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 11:56:14,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-14 11:56:14,235 INFO L175 Difference]: Start difference. First operand has 154 places, 90 transitions, 660 flow. Second operand 12 states and 127 transitions. [2024-06-14 11:56:14,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 107 transitions, 918 flow [2024-06-14 11:56:14,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 107 transitions, 838 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:14,278 INFO L231 Difference]: Finished difference. Result has 147 places, 86 transitions, 592 flow [2024-06-14 11:56:14,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=592, PETRI_PLACES=147, PETRI_TRANSITIONS=86} [2024-06-14 11:56:14,278 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-14 11:56:14,278 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 86 transitions, 592 flow [2024-06-14 11:56:14,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:14,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:14,278 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 11:56:14,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-14 11:56:14,279 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:14,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:14,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1239823131, now seen corresponding path program 14 times [2024-06-14 11:56:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916902029] [2024-06-14 11:56:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:16,453 INFO 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 11:56:16,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:16,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916902029] [2024-06-14 11:56:16,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916902029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:16,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:16,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:16,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993226333] [2024-06-14 11:56:16,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:16,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:16,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:16,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:16,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:16,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:16,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 86 transitions, 592 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:16,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:16,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:16,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:17,197 INFO L124 PetriNetUnfolderBase]: 225/469 cut-off events. [2024-06-14 11:56:17,197 INFO L125 PetriNetUnfolderBase]: For 20884/20884 co-relation queries the response was YES. [2024-06-14 11:56:17,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 469 events. 225/469 cut-off events. For 20884/20884 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2135 event pairs, 56 based on Foata normal form. 6/475 useless extension candidates. Maximal degree in co-relation 1992. Up to 319 conditions per place. [2024-06-14 11:56:17,199 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 26 changer transitions 11/103 dead transitions. [2024-06-14 11:56:17,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 103 transitions, 846 flow [2024-06-14 11:56:17,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 11:56:17,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-14 11:56:17,201 INFO L175 Difference]: Start difference. First operand has 147 places, 86 transitions, 592 flow. Second operand 12 states and 125 transitions. [2024-06-14 11:56:17,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 103 transitions, 846 flow [2024-06-14 11:56:17,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 103 transitions, 802 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 11:56:17,231 INFO L231 Difference]: Finished difference. Result has 144 places, 83 transitions, 589 flow [2024-06-14 11:56:17,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=589, PETRI_PLACES=144, PETRI_TRANSITIONS=83} [2024-06-14 11:56:17,231 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-14 11:56:17,232 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 83 transitions, 589 flow [2024-06-14 11:56:17,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:17,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:17,232 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 11:56:17,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-14 11:56:17,232 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:17,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1462674201, now seen corresponding path program 15 times [2024-06-14 11:56:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:17,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749320491] [2024-06-14 11:56:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:17,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:19,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:19,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749320491] [2024-06-14 11:56:19,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749320491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:19,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:19,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:19,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125176603] [2024-06-14 11:56:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:19,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:19,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:19,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:19,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:19,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:19,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 83 transitions, 589 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:19,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:19,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:19,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:19,583 INFO L124 PetriNetUnfolderBase]: 215/451 cut-off events. [2024-06-14 11:56:19,583 INFO L125 PetriNetUnfolderBase]: For 20048/20048 co-relation queries the response was YES. [2024-06-14 11:56:19,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 451 events. 215/451 cut-off events. For 20048/20048 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2025 event pairs, 52 based on Foata normal form. 6/457 useless extension candidates. Maximal degree in co-relation 1938. Up to 357 conditions per place. [2024-06-14 11:56:19,586 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 66 selfloop transitions, 17 changer transitions 15/100 dead transitions. [2024-06-14 11:56:19,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 100 transitions, 831 flow [2024-06-14 11:56:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 11:56:19,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-14 11:56:19,587 INFO L175 Difference]: Start difference. First operand has 144 places, 83 transitions, 589 flow. Second operand 12 states and 126 transitions. [2024-06-14 11:56:19,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 100 transitions, 831 flow [2024-06-14 11:56:19,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 100 transitions, 773 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:19,617 INFO L231 Difference]: Finished difference. Result has 140 places, 78 transitions, 531 flow [2024-06-14 11:56:19,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=531, PETRI_PLACES=140, PETRI_TRANSITIONS=78} [2024-06-14 11:56:19,617 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-14 11:56:19,617 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 78 transitions, 531 flow [2024-06-14 11:56:19,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:19,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:19,618 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 11:56:19,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-14 11:56:19,618 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:19,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2106252845, now seen corresponding path program 16 times [2024-06-14 11:56:19,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:19,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283365510] [2024-06-14 11:56:19,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:19,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:21,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:21,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283365510] [2024-06-14 11:56:21,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283365510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:21,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:21,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:21,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038282781] [2024-06-14 11:56:21,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:21,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:21,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:21,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:21,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 78 transitions, 531 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:21,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:21,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:21,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:22,186 INFO L124 PetriNetUnfolderBase]: 200/422 cut-off events. [2024-06-14 11:56:22,186 INFO L125 PetriNetUnfolderBase]: For 18340/18340 co-relation queries the response was YES. [2024-06-14 11:56:22,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 422 events. 200/422 cut-off events. For 18340/18340 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1832 event pairs, 50 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1796. Up to 340 conditions per place. [2024-06-14 11:56:22,188 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 64 selfloop transitions, 12 changer transitions 17/95 dead transitions. [2024-06-14 11:56:22,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 95 transitions, 761 flow [2024-06-14 11:56:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-14 11:56:22,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3229166666666667 [2024-06-14 11:56:22,189 INFO L175 Difference]: Start difference. First operand has 140 places, 78 transitions, 531 flow. Second operand 12 states and 124 transitions. [2024-06-14 11:56:22,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 95 transitions, 761 flow [2024-06-14 11:56:22,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 95 transitions, 719 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:22,214 INFO L231 Difference]: Finished difference. Result has 134 places, 73 transitions, 493 flow [2024-06-14 11:56:22,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=493, PETRI_PLACES=134, PETRI_TRANSITIONS=73} [2024-06-14 11:56:22,215 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-14 11:56:22,215 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 73 transitions, 493 flow [2024-06-14 11:56:22,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:22,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:22,215 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 11:56:22,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-14 11:56:22,216 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:22,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash -764971381, now seen corresponding path program 17 times [2024-06-14 11:56:22,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:22,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293344458] [2024-06-14 11:56:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:22,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:23,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:23,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293344458] [2024-06-14 11:56:23,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293344458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:23,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:23,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:23,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521914953] [2024-06-14 11:56:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:23,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:23,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:24,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:24,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 73 transitions, 493 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:24,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:24,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:24,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:24,522 INFO L124 PetriNetUnfolderBase]: 184/390 cut-off events. [2024-06-14 11:56:24,522 INFO L125 PetriNetUnfolderBase]: For 16726/16726 co-relation queries the response was YES. [2024-06-14 11:56:24,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 390 events. 184/390 cut-off events. For 16726/16726 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1649 event pairs, 44 based on Foata normal form. 6/396 useless extension candidates. Maximal degree in co-relation 1670. Up to 312 conditions per place. [2024-06-14 11:56:24,524 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 61 selfloop transitions, 11 changer transitions 15/89 dead transitions. [2024-06-14 11:56:24,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 89 transitions, 705 flow [2024-06-14 11:56:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:56:24,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:56:24,525 INFO L175 Difference]: Start difference. First operand has 134 places, 73 transitions, 493 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:56:24,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 89 transitions, 705 flow [2024-06-14 11:56:24,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 89 transitions, 673 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:56:24,543 INFO L231 Difference]: Finished difference. Result has 127 places, 68 transitions, 458 flow [2024-06-14 11:56:24,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=115, 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=12, PETRI_FLOW=458, PETRI_PLACES=127, PETRI_TRANSITIONS=68} [2024-06-14 11:56:24,543 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-14 11:56:24,543 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 68 transitions, 458 flow [2024-06-14 11:56:24,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:24,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:24,543 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 11:56:24,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-14 11:56:24,543 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:24,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash -860289575, now seen corresponding path program 18 times [2024-06-14 11:56:24,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:24,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32789667] [2024-06-14 11:56:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:24,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:26,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:26,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32789667] [2024-06-14 11:56:26,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32789667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:26,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:26,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:26,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093987656] [2024-06-14 11:56:26,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:26,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:26,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:26,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:26,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 68 transitions, 458 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:26,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:26,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:26,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:26,981 INFO L124 PetriNetUnfolderBase]: 168/362 cut-off events. [2024-06-14 11:56:26,981 INFO L125 PetriNetUnfolderBase]: For 14472/14472 co-relation queries the response was YES. [2024-06-14 11:56:26,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 362 events. 168/362 cut-off events. For 14472/14472 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1510 event pairs, 42 based on Foata normal form. 6/368 useless extension candidates. Maximal degree in co-relation 1552. Up to 281 conditions per place. [2024-06-14 11:56:26,983 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 53 selfloop transitions, 6 changer transitions 23/84 dead transitions. [2024-06-14 11:56:26,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 84 transitions, 664 flow [2024-06-14 11:56:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-14 11:56:26,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-14 11:56:26,984 INFO L175 Difference]: Start difference. First operand has 127 places, 68 transitions, 458 flow. Second operand 12 states and 119 transitions. [2024-06-14 11:56:26,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 84 transitions, 664 flow [2024-06-14 11:56:26,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 84 transitions, 634 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:26,999 INFO L231 Difference]: Finished difference. Result has 121 places, 58 transitions, 381 flow [2024-06-14 11:56:26,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=381, PETRI_PLACES=121, PETRI_TRANSITIONS=58} [2024-06-14 11:56:26,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-14 11:56:26,999 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 58 transitions, 381 flow [2024-06-14 11:56:26,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:26,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:26,999 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 11:56:27,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-14 11:56:27,000 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:27,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash 443666857, now seen corresponding path program 19 times [2024-06-14 11:56:27,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:27,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455941976] [2024-06-14 11:56:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:28,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:28,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455941976] [2024-06-14 11:56:28,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455941976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:28,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:28,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:28,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469375308] [2024-06-14 11:56:28,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:28,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:28,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:28,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:28,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:28,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 58 transitions, 381 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:28,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:28,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:28,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:29,127 INFO L124 PetriNetUnfolderBase]: 146/316 cut-off events. [2024-06-14 11:56:29,128 INFO L125 PetriNetUnfolderBase]: For 12336/12336 co-relation queries the response was YES. [2024-06-14 11:56:29,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 316 events. 146/316 cut-off events. For 12336/12336 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1253 event pairs, 40 based on Foata normal form. 6/322 useless extension candidates. Maximal degree in co-relation 1354. Up to 240 conditions per place. [2024-06-14 11:56:29,129 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 47 selfloop transitions, 12 changer transitions 12/73 dead transitions. [2024-06-14 11:56:29,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 73 transitions, 561 flow [2024-06-14 11:56:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:56:29,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:56:29,130 INFO L175 Difference]: Start difference. First operand has 121 places, 58 transitions, 381 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:56:29,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 73 transitions, 561 flow [2024-06-14 11:56:29,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 73 transitions, 507 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-06-14 11:56:29,139 INFO L231 Difference]: Finished difference. Result has 106 places, 54 transitions, 331 flow [2024-06-14 11:56:29,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=331, PETRI_PLACES=106, PETRI_TRANSITIONS=54} [2024-06-14 11:56:29,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-14 11:56:29,140 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 54 transitions, 331 flow [2024-06-14 11:56:29,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:29,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:29,140 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 11:56:29,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-14 11:56:29,140 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:29,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:29,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1078567671, now seen corresponding path program 20 times [2024-06-14 11:56:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:29,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943222005] [2024-06-14 11:56:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:29,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:30,873 INFO 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 11:56:30,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:30,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943222005] [2024-06-14 11:56:30,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943222005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:30,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:30,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:30,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658009874] [2024-06-14 11:56:30,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:30,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:30,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:30,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:30,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:31,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:31,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 54 transitions, 331 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:31,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:31,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:31,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:31,353 INFO L124 PetriNetUnfolderBase]: 133/293 cut-off events. [2024-06-14 11:56:31,353 INFO L125 PetriNetUnfolderBase]: For 9784/9784 co-relation queries the response was YES. [2024-06-14 11:56:31,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 293 events. 133/293 cut-off events. For 9784/9784 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1123 event pairs, 38 based on Foata normal form. 6/299 useless extension candidates. Maximal degree in co-relation 1202. Up to 220 conditions per place. [2024-06-14 11:56:31,354 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 9 changer transitions 15/69 dead transitions. [2024-06-14 11:56:31,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 69 transitions, 499 flow [2024-06-14 11:56:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:31,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-14 11:56:31,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-14 11:56:31,355 INFO L175 Difference]: Start difference. First operand has 106 places, 54 transitions, 331 flow. Second operand 12 states and 119 transitions. [2024-06-14 11:56:31,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 69 transitions, 499 flow [2024-06-14 11:56:31,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 69 transitions, 469 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:31,364 INFO L231 Difference]: Finished difference. Result has 102 places, 48 transitions, 285 flow [2024-06-14 11:56:31,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=285, PETRI_PLACES=102, PETRI_TRANSITIONS=48} [2024-06-14 11:56:31,365 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-14 11:56:31,365 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 48 transitions, 285 flow [2024-06-14 11:56:31,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:31,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:31,365 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 11:56:31,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-14 11:56:31,365 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:31,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:31,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1913254539, now seen corresponding path program 21 times [2024-06-14 11:56:31,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:31,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037516903] [2024-06-14 11:56:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:31,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:33,430 INFO 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 11:56:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037516903] [2024-06-14 11:56:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037516903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:33,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:33,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577745203] [2024-06-14 11:56:33,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:33,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:33,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:33,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 48 transitions, 285 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:33,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:33,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:33,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:33,959 INFO L124 PetriNetUnfolderBase]: 118/264 cut-off events. [2024-06-14 11:56:33,959 INFO L125 PetriNetUnfolderBase]: For 8614/8614 co-relation queries the response was YES. [2024-06-14 11:56:33,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 264 events. 118/264 cut-off events. For 8614/8614 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 968 event pairs, 36 based on Foata normal form. 6/270 useless extension candidates. Maximal degree in co-relation 1078. Up to 193 conditions per place. [2024-06-14 11:56:33,961 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 41 selfloop transitions, 10 changer transitions 11/64 dead transitions. [2024-06-14 11:56:33,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 64 transitions, 449 flow [2024-06-14 11:56:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-14 11:56:33,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-14 11:56:33,961 INFO L175 Difference]: Start difference. First operand has 102 places, 48 transitions, 285 flow. Second operand 12 states and 120 transitions. [2024-06-14 11:56:33,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 64 transitions, 449 flow [2024-06-14 11:56:33,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 64 transitions, 395 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 11:56:33,969 INFO L231 Difference]: Finished difference. Result has 94 places, 45 transitions, 246 flow [2024-06-14 11:56:33,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=246, PETRI_PLACES=94, PETRI_TRANSITIONS=45} [2024-06-14 11:56:33,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-06-14 11:56:33,969 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 45 transitions, 246 flow [2024-06-14 11:56:33,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:33,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:33,970 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 11:56:33,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-14 11:56:33,970 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:33,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:33,970 INFO L85 PathProgramCache]: Analyzing trace with hash 452863627, now seen corresponding path program 22 times [2024-06-14 11:56:33,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:33,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022425321] [2024-06-14 11:56:33,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:33,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:35,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:35,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022425321] [2024-06-14 11:56:35,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022425321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:35,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:35,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:35,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252262066] [2024-06-14 11:56:35,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:35,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:36,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:36,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 45 transitions, 246 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:36,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:36,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:36,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:36,424 INFO L124 PetriNetUnfolderBase]: 108/246 cut-off events. [2024-06-14 11:56:36,424 INFO L125 PetriNetUnfolderBase]: For 7518/7518 co-relation queries the response was YES. [2024-06-14 11:56:36,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 246 events. 108/246 cut-off events. For 7518/7518 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 892 event pairs, 32 based on Foata normal form. 6/252 useless extension candidates. Maximal degree in co-relation 976. Up to 176 conditions per place. [2024-06-14 11:56:36,425 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 35 selfloop transitions, 7 changer transitions 17/61 dead transitions. [2024-06-14 11:56:36,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 61 transitions, 398 flow [2024-06-14 11:56:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-14 11:56:36,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-14 11:56:36,426 INFO L175 Difference]: Start difference. First operand has 94 places, 45 transitions, 246 flow. Second operand 12 states and 118 transitions. [2024-06-14 11:56:36,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 61 transitions, 398 flow [2024-06-14 11:56:36,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 61 transitions, 372 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:36,432 INFO L231 Difference]: Finished difference. Result has 90 places, 40 transitions, 216 flow [2024-06-14 11:56:36,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=216, PETRI_PLACES=90, PETRI_TRANSITIONS=40} [2024-06-14 11:56:36,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-14 11:56:36,432 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 40 transitions, 216 flow [2024-06-14 11:56:36,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:36,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:36,432 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 11:56:36,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-14 11:56:36,432 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:36,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1362705413, now seen corresponding path program 23 times [2024-06-14 11:56:36,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:36,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466311310] [2024-06-14 11:56:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:36,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:38,520 INFO 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 11:56:38,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466311310] [2024-06-14 11:56:38,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466311310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:38,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:38,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711875377] [2024-06-14 11:56:38,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:38,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:38,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:38,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 40 transitions, 216 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:38,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:38,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:38,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:38,859 INFO L124 PetriNetUnfolderBase]: 92/214 cut-off events. [2024-06-14 11:56:38,859 INFO L125 PetriNetUnfolderBase]: For 6504/6504 co-relation queries the response was YES. [2024-06-14 11:56:38,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 214 events. 92/214 cut-off events. For 6504/6504 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 727 event pairs, 21 based on Foata normal form. 6/220 useless extension candidates. Maximal degree in co-relation 864. Up to 128 conditions per place. [2024-06-14 11:56:38,860 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 31 selfloop transitions, 12 changer transitions 10/55 dead transitions. [2024-06-14 11:56:38,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 55 transitions, 354 flow [2024-06-14 11:56:38,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-14 11:56:38,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3072916666666667 [2024-06-14 11:56:38,861 INFO L175 Difference]: Start difference. First operand has 90 places, 40 transitions, 216 flow. Second operand 12 states and 118 transitions. [2024-06-14 11:56:38,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 55 transitions, 354 flow [2024-06-14 11:56:38,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 55 transitions, 332 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:56:38,866 INFO L231 Difference]: Finished difference. Result has 83 places, 36 transitions, 202 flow [2024-06-14 11:56:38,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=202, PETRI_PLACES=83, PETRI_TRANSITIONS=36} [2024-06-14 11:56:38,866 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-14 11:56:38,866 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 36 transitions, 202 flow [2024-06-14 11:56:38,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:38,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:38,867 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 11:56:38,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-14 11:56:38,867 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:38,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1564054133, now seen corresponding path program 24 times [2024-06-14 11:56:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:38,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601513245] [2024-06-14 11:56:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:40,762 INFO 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 11:56:40,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:40,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601513245] [2024-06-14 11:56:40,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601513245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:40,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:40,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818219277] [2024-06-14 11:56:40,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:40,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:40,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:40,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:40,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:40,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:40,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 36 transitions, 202 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:40,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:40,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:40,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:41,156 INFO L124 PetriNetUnfolderBase]: 65/157 cut-off events. [2024-06-14 11:56:41,156 INFO L125 PetriNetUnfolderBase]: For 3440/3440 co-relation queries the response was YES. [2024-06-14 11:56:41,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 157 events. 65/157 cut-off events. For 3440/3440 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 458 event pairs, 17 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 560. Up to 91 conditions per place. [2024-06-14 11:56:41,156 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 24 selfloop transitions, 7 changer transitions 17/50 dead transitions. [2024-06-14 11:56:41,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 50 transitions, 328 flow [2024-06-14 11:56:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-14 11:56:41,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2994791666666667 [2024-06-14 11:56:41,157 INFO L175 Difference]: Start difference. First operand has 83 places, 36 transitions, 202 flow. Second operand 12 states and 115 transitions. [2024-06-14 11:56:41,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 50 transitions, 328 flow [2024-06-14 11:56:41,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 50 transitions, 296 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 11:56:41,160 INFO L231 Difference]: Finished difference. Result has 77 places, 30 transitions, 159 flow [2024-06-14 11:56:41,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=159, PETRI_PLACES=77, PETRI_TRANSITIONS=30} [2024-06-14 11:56:41,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-14 11:56:41,161 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 30 transitions, 159 flow [2024-06-14 11:56:41,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:41,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:41,161 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 11:56:41,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-14 11:56:41,161 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:41,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:41,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1913514009, now seen corresponding path program 25 times [2024-06-14 11:56:41,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:41,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172550943] [2024-06-14 11:56:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:41,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:43,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:43,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:43,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172550943] [2024-06-14 11:56:43,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172550943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:43,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:43,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:43,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930634694] [2024-06-14 11:56:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:43,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:44,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:44,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 30 transitions, 159 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:44,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:44,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:44,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:44,454 INFO L124 PetriNetUnfolderBase]: 54/132 cut-off events. [2024-06-14 11:56:44,455 INFO L125 PetriNetUnfolderBase]: For 2626/2626 co-relation queries the response was YES. [2024-06-14 11:56:44,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 132 events. 54/132 cut-off events. For 2626/2626 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 15 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 460. Up to 67 conditions per place. [2024-06-14 11:56:44,455 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 4 changer transitions 20/45 dead transitions. [2024-06-14 11:56:44,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 45 transitions, 277 flow [2024-06-14 11:56:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-14 11:56:44,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2024-06-14 11:56:44,456 INFO L175 Difference]: Start difference. First operand has 77 places, 30 transitions, 159 flow. Second operand 12 states and 116 transitions. [2024-06-14 11:56:44,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 45 transitions, 277 flow [2024-06-14 11:56:44,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 45 transitions, 251 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:56:44,458 INFO L231 Difference]: Finished difference. Result has 66 places, 23 transitions, 112 flow [2024-06-14 11:56:44,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=112, PETRI_PLACES=66, PETRI_TRANSITIONS=23} [2024-06-14 11:56:44,458 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 11:56:44,458 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 23 transitions, 112 flow [2024-06-14 11:56:44,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:44,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:56:44,458 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 11:56:44,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-14 11:56:44,458 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:56:44,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:56:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1240082601, now seen corresponding path program 26 times [2024-06-14 11:56:44,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:56:44,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594527274] [2024-06-14 11:56:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:56:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:56:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:56:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:56:46,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:56:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594527274] [2024-06-14 11:56:46,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594527274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:56:46,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:56:46,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-14 11:56:46,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892919002] [2024-06-14 11:56:46,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:56:46,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-14 11:56:46,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:56:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-14 11:56:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-14 11:56:46,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-14 11:56:46,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 23 transitions, 112 flow. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:46,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:56:46,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-14 11:56:46,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:56:46,618 INFO L124 PetriNetUnfolderBase]: 24/66 cut-off events. [2024-06-14 11:56:46,618 INFO L125 PetriNetUnfolderBase]: For 764/764 co-relation queries the response was YES. [2024-06-14 11:56:46,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 66 events. 24/66 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 6/72 useless extension candidates. Maximal degree in co-relation 168. Up to 24 conditions per place. [2024-06-14 11:56:46,618 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-14 11:56:46,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 32 transitions, 158 flow [2024-06-14 11:56:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:56:46,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:56:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-06-14 11:56:46,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2682291666666667 [2024-06-14 11:56:46,619 INFO L175 Difference]: Start difference. First operand has 66 places, 23 transitions, 112 flow. Second operand 12 states and 103 transitions. [2024-06-14 11:56:46,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 32 transitions, 158 flow [2024-06-14 11:56:46,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-14 11:56:46,620 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-14 11:56:46,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-14 11:56:46,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-14 11:56:46,620 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-14 11:56:46,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:56:46,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 11:56:46,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 11:56:46,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 11:56:46,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 11:56:46,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-14 11:56:46,624 INFO L445 BasicCegarLoop]: Path program histogram: [45, 33, 26, 24, 21, 18, 15, 10, 8, 6, 6, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:56:46,627 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:56:46,627 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:56:46,630 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 11:56:46,630 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 11:56:46,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:56:46 BasicIcfg [2024-06-14 11:56:46,631 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:56:46,632 INFO L158 Benchmark]: Toolchain (without parser) took 645347.43ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 141.7MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 136.3MB. Max. memory is 16.1GB. [2024-06-14 11:56:46,632 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:56:46,632 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:56:46,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 654.43ms. Allocated memory is still 176.2MB. Free memory was 140.6MB in the beginning and 106.0MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-14 11:56:46,633 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.74ms. Allocated memory is still 176.2MB. Free memory was 106.0MB in the beginning and 102.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:56:46,633 INFO L158 Benchmark]: Boogie Preprocessor took 96.17ms. Allocated memory is still 176.2MB. Free memory was 102.9MB in the beginning and 98.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 11:56:46,633 INFO L158 Benchmark]: RCFGBuilder took 863.03ms. Allocated memory is still 176.2MB. Free memory was 98.7MB in the beginning and 88.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-14 11:56:46,633 INFO L158 Benchmark]: TraceAbstraction took 643649.55ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 88.3MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. [2024-06-14 11:56:46,635 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 0.20ms. Allocated memory is still 109.1MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.23ms. Allocated memory is still 109.1MB. Free memory is still 75.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 654.43ms. Allocated memory is still 176.2MB. Free memory was 140.6MB in the beginning and 106.0MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.74ms. Allocated memory is still 176.2MB. Free memory was 106.0MB in the beginning and 102.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.17ms. Allocated memory is still 176.2MB. Free memory was 102.9MB in the beginning and 98.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 863.03ms. Allocated memory is still 176.2MB. Free memory was 98.7MB in the beginning and 88.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 643649.55ms. Allocated memory was 176.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 88.3MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 643.5s, OverallIterations: 244, TraceHistogramMax: 1, PathProgramHistogramMax: 45, EmptinessCheckTime: 0.0s, AutomataDifference: 284.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16879 SdHoareTripleChecker+Valid, 83.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14588 mSDsluCounter, 6001 SdHoareTripleChecker+Invalid, 71.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5244 mSDsCounter, 4161 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128184 IncrementalHoareTripleChecker+Invalid, 132345 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4161 mSolverCounterUnsat, 757 mSDtfsCounter, 128184 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3022 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 3004 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7083 ImplicationChecksByTransitivity, 101.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5772occurred in iteration=99, InterpolantAutomatonStates: 2562, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 354.4s InterpolantComputationTime, 4320 NumberOfCodeBlocks, 4320 NumberOfCodeBlocksAsserted, 244 NumberOfCheckSat, 4076 ConstructedInterpolants, 0 QuantifiedInterpolants, 199877 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 244 InterpolantComputations, 244 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 11:56:46,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE